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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
19,500 | nucl-th/9611007 | Dirk Hueber | D. H\"uber, H. Kamada, H. Wita{\l}a, W. Gl\"ockle | How to include a three-nucleon force into Faddeev equations for the 3N
continuum: a new form | 12 pages in REVTeX, 2 figures in PiCTeX | Acta Phys.Polon. B28 (1997) 1677-1686 | null | null | nucl-th | null | A new, more efficient approach to include a three nucleon force into
three-nucleon continuum calculations is presented. Results obtained in the new
and our old approach are compared both for elastic nucleon-deuteron scattering
as well as for the breakup process. The advantages of the new scheme are
discussed.
| [{'version': 'v1', 'created': 'Mon, 4 Nov 1996 19:05:57 GMT'}] | 2007-05-23 | [array(['Hüber', 'D.', ''], dtype=object)
array(['Kamada', 'H.', ''], dtype=object)
array(['Witała', 'H.', ''], dtype=object)
array(['Glöckle', 'W.', ''], dtype=object)] |
19,501 | 2201.02367 | Zhiyuan Li | Zhiyuan Li and Xun Zhang | Deligne-Beilinson cohomology of the universal K3 surface | 26 pages, any comments are welcome! | null | null | null | math.AG | http://creativecommons.org/licenses/by/4.0/ | O'Grady's generalized Franchetta conjecture (GFC) is concerned with
codimension 2 algebraic cycles on universal polarized K3 surfaces. In
\cite{BL17}, this conjecture has been studied in the Betti cohomology groups.
Following a suggestion of Voisin, we investigate this problem in the
Deligne-Beilinson (DB) cohomology groups. In this paper, we develop the theory
of Deligne-Beilinson cohomology groups on separated (smooth) Deligne-Mumford
stacks. Using the automorphic cohomology group and Noether-Lefschetz theory, we
compute the 4-th DB-cohomology group of universal oriented polarized K3
surfaces with at worst an $A_1$-singularity and show that GFC for such family
holds in DB-cohomology. In particular, this confirms O'Grady's original
conjecture in DB cohomology.
| [{'version': 'v1', 'created': 'Fri, 7 Jan 2022 08:32:00 GMT'}] | 2022-01-10 | [array(['Li', 'Zhiyuan', ''], dtype=object)
array(['Zhang', 'Xun', ''], dtype=object)] |
19,502 | 1202.2239 | Olena Romanets | O. Romanets, L. Tolos, C. Garcia-Recio, J. Nieves, L. L. Salcedo and
R. G. E. Timmermans | Charmed and strange baryon resonances with heavy-quark spin symmetry | 31 pages, 17 figures, 25 tables | Phys.Rev.D85: 114032, 2012 | 10.1103/PhysRevD.85.114032 | null | hep-ph nucl-ex nucl-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study charmed and strange baryon resonances that are generated dynamically
by a unitary baryon-meson coupled-channel model which incorporates heavy-quark
spin symmetry. This is accomplished by extending the SU(3) Weinberg-Tomozawa
chiral Lagrangian to SU(8) spin-flavor symmetry plus a suitable symmetry
breaking. The model produces resonances with negative parity from s-wave
interaction of pseudoscalar and vector mesons with $1/2^+$ and $3/2^+$ baryons.
Resonances in all the isospin, spin, and strange sectors with one, two, and
three charm units are studied. Our results are compared with experimental data
from several facilities, such as the CLEO, Belle or BaBar Collaborations, as
well as with other theoretical models. Some of our dynamically generated states
can be readily assigned to resonances found experimentally, while others do not
have a straightforward identification and require the compilation of more data
and also a refinement of the model. In particular, we identify the
$\Xi_c(2790)$ and $\Xi_c(2815)$ resonances as possible candidates for a
heavy-quark spin symmetry doublet.
| [{'version': 'v1', 'created': 'Fri, 10 Feb 2012 11:52:27 GMT'}
{'version': 'v2', 'created': 'Wed, 4 Jul 2012 12:05:13 GMT'}] | 2012-07-05 | [array(['Romanets', 'O.', ''], dtype=object)
array(['Tolos', 'L.', ''], dtype=object)
array(['Garcia-Recio', 'C.', ''], dtype=object)
array(['Nieves', 'J.', ''], dtype=object)
array(['Salcedo', 'L. L.', ''], dtype=object)
array(['Timmermans', 'R. G. E.', ''], dtype=object)] |
19,503 | 2301.03883 | Mohsen Khodadi | Mohsen Khodadi, Marco Schreck | Hubble tension as a guide for refining the early Universe: Cosmologies
with explicit local Lorentz and diffeomorphism violation | 14 pages (two columns) | Phys.Dark Univ. 39 (2023) 101170 | 10.1016/j.dark.2023.101170 | null | gr-qc astro-ph.CO hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This paper is dedicated to assessing modified cosmological settings based on
the gravitational Standard-Model Extension (SME). Our analysis rests upon the
Hubble tension (HT), which is a discrepancy between the observational
determination of the Hubble parameter via data from the Cosmic Microwave
Background (CMB) and Type Ia supernovae, respectively. While the latter
approach is model-independent, the former highly depends on the model used to
describe the physics of the early Universe. Motivated by the HT, we take into
account two recently introduced cosmological models as test frameworks of the
pre-CMB era. These settings involve local Lorentz and diffeomorphism violation
parameterized by nondynamical SME background fields $s_{00}$ and $s^{ij}$,
respectively. We aim at explaining the tension in the measured results of the
cosmic expansion rate in early and late epochs by resorting to these two
modified cosmologies as potential descriptions of the pre-CMB era. As long as
the HT does not turn out to be a merely systematic effect, it can serve as a
criterion for exploring regions of the parameter space in certain pre-CMB
new-physics candidates such as SME cosmologies. By setting extracted limits on
SME coefficients into perspective with already existing bounds in the
literature, we infer that none of the aforementioned models are suitable
pre-CMB candidates for fixing the HT. In this way, new physics arising from the
particular realizations of Lorentz and diffeomorphism violation studied in this
paper does not explain the HT. Our paper exemplifies how to exploit this
discrepancy as a novel possibility of refining our description of the early
Universe.
| [{'version': 'v1', 'created': 'Tue, 10 Jan 2023 10:10:56 GMT'}
{'version': 'v2', 'created': 'Tue, 17 Jan 2023 18:47:16 GMT'}] | 2023-01-18 | [array(['Khodadi', 'Mohsen', ''], dtype=object)
array(['Schreck', 'Marco', ''], dtype=object)] |
19,504 | 2207.10594 | Nami Li | Nami Li, X.Q. Xu, Y.F. Wang, X. Lin, N. Yan and G.S. Xu | Impact of pedestal density gradient and collisionality on ELM dynamics | null | null | 10.1063/5.0111669 | null | physics.plasm-ph | http://creativecommons.org/licenses/by/4.0/ | BOUT++ turbulence simulations are conducted to capture the underlying physics
of the small ELM characteristics achieved by increasing separatrix density via
controlling strike points from vertical to horizontal divertor plates for three
EAST discharges. BOUT ++ linear simulations show that the most unstable modes
change from high-n ideal ballooning modes to the intermediate-n
peeling-ballooning modes and eventually to peeling-ballooning stable plasmas in
the pedestal. Nonlinear simulations show that the fluctuation is saturated at a
high level for the lowest separatrix density. The elm size decreases with
increasing the separatrix density, until the fraction of this energy lost
during the ELM crash becomes less than 1% of the pedestal stored energy,
leading to small ELMs. Simulations indicate that small ELMs can be triggered
either by the marginally peeling-ballooning instability near the peak pressure
gradient position inside pedestal or by a local instability in the pedestal
foot with a larger separatrix density gradient. The pedestal collisionality
scan for type-I ELMs with steep pedestal density gradient shows that both
linear growth rate and elm size decrease with collisionality increasing. While
the pedestal collisionality and pedestal density width scan with a weak
pedestal density gradient indicate small ELMs can either be triggered by high-n
ballooning mode or by low-n peeling mode in low collisionality region 0.04~0.1.
The simulations indicate the weaker the linear unstable modes near marginal
stability with small linear growth rate, the lower nonlinearly saturated
fluctuation intensity and the smaller turbulence spreading from the linear
unstable zone to stable zone in the nonlinear saturation phase, leading to
small ELMs.
| [{'version': 'v1', 'created': 'Thu, 21 Jul 2022 16:37:48 GMT'}
{'version': 'v2', 'created': 'Mon, 10 Oct 2022 18:56:02 GMT'}] | 2022-12-14 | [array(['Li', 'Nami', ''], dtype=object)
array(['Xu', 'X. Q.', ''], dtype=object)
array(['Wang', 'Y. F.', ''], dtype=object)
array(['Lin', 'X.', ''], dtype=object)
array(['Yan', 'N.', ''], dtype=object)
array(['Xu', 'G. S.', ''], dtype=object)] |
19,505 | cond-mat/9411106 | Juan Manuel Lopez Martin | J.M. Lopez, M.A. Rodriguez and L. Pesquera | Analysis of self--averaging properties in the transport of particles
through random media | 4 pages, RevTeX , No figures, submitted to Physical Review E (Rapid
Communication) | null | 10.1103/PhysRevE.51.R1637 | null | cond-mat | null | We investigate self-averaging properties in the transport of particles
through random media. We show rigorously that in the subdiffusive anomalous
regime transport coefficients are not self--averaging quantities. These
quantities are exactly calculated in the case of directed random walks. In the
case of general symmetric random walks a perturbative analysis around the
Effective Medium Approximation (EMA) is performed.
| [{'version': 'v1', 'created': 'Fri, 25 Nov 1994 17:30:03 GMT'}] | 2009-10-22 | [array(['Lopez', 'J. M.', ''], dtype=object)
array(['Rodriguez', 'M. A.', ''], dtype=object)
array(['Pesquera', 'L.', ''], dtype=object)] |
19,506 | 1701.05071 | Levan Chotorlishvili L | Z. Toklikishvili, L. Chotorlishvili, S. K. Mishra, S. Stagraczynski,
M. Sch\"uler, A. R. P. Rau, and J. Berakdar | Entanglement dynamics of two nitrogen vacancy centers coupled by a
nanomechanical resonator | to appear in J.Phys. B | null | 10.1088/1361-6455/aa5a69 | null | quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we study the time evolution of the entanglement between two
remote NV Centers (nitrogen vacancy in diamond) connected by a dual-mode
nanomechanical resonator with magnetic tips on both sides. Calculating the
negativity as a measure for the entanglement, we find that the entanglement
between two spins oscillates with time and can be manipulated by varying the
parameters of the system. We observed the phe- nomenon of a sudden death and
the periodic revivals of entanglement in time. For the study of quantum deco-
herence, we implement a Lindblad master equation. In spite of its complexity,
the model is analytically solvable under fairly reasonable assumptions, and
shows that the decoherence influences the entanglement, the sudden death, and
the revivals in time.
| [{'version': 'v1', 'created': 'Wed, 18 Jan 2017 14:19:57 GMT'}] | 2017-03-08 | [array(['Toklikishvili', 'Z.', ''], dtype=object)
array(['Chotorlishvili', 'L.', ''], dtype=object)
array(['Mishra', 'S. K.', ''], dtype=object)
array(['Stagraczynski', 'S.', ''], dtype=object)
array(['Schüler', 'M.', ''], dtype=object)
array(['Rau', 'A. R. P.', ''], dtype=object)
array(['Berakdar', 'J.', ''], dtype=object)] |
19,507 | 1811.10702 | Simeon Mistakidis | S.I. Mistakidis, G.C. Katsimiga, G.M. Koutentakis, Th. Busch and P.
Schmelcher | Quench Dynamics and Orthogonality Catastrophe of Bose Polarons | 14 pages, 7 figures | Phys. Rev. Lett. 122, 183001 (2019) | 10.1103/PhysRevLett.122.183001 | null | quant-ph cond-mat.quant-gas physics.atom-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We monitor the correlated quench induced dynamical dressing of a spinor
impurity repulsively interacting with a Bose-Einstein condensate. Inspecting
the temporal evolution of the structure factor three distinct dynamical regions
arise upon increasing the interspecies interaction. These regions are found to
be related to the segregated nature of the impurity and to the ohmic character
of the bath. It is shown that the impurity dynamics can be described by an
effective potential that deforms from a harmonic to a double-well one when
crossing the miscibility-immiscibility threshold. In particular, for miscible
components the polaron formation is imprinted on the spectral response of the
system. We further illustrate that for increasing interaction an orthogonality
catastrophe occurs and the polaron picture breaks down. Then a dissipative
motion of the impurity takes place leading to a transfer of energy to its
environment. This process signals the presence of entanglement in the many-body
system.
| [{'version': 'v1', 'created': 'Mon, 26 Nov 2018 21:56:05 GMT'}
{'version': 'v2', 'created': 'Sun, 12 May 2019 11:49:25 GMT'}] | 2019-05-15 | [array(['Mistakidis', 'S. I.', ''], dtype=object)
array(['Katsimiga', 'G. C.', ''], dtype=object)
array(['Koutentakis', 'G. M.', ''], dtype=object)
array(['Busch', 'Th.', ''], dtype=object)
array(['Schmelcher', 'P.', ''], dtype=object)] |
19,508 | 1111.1740 | Hrayr Matevosyan | Hrayr H. Matevosyan, Wolfgang Bentz, Ian C. Clo\"et and Anthony W.
Thomas | Transverse Momentum Dependent Fragmentation and Quark Distribution
Functions from the NJL-jet Model | 13 pages, 17 figures, v2: minor revisions to conform with the
published version in Phys.Rev.D | Phys.Rev.D85:014021,2012 | 10.1103/PhysRevD.85.014021 | ADP-11-34/T756 | hep-ph nucl-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Using the model of Nambu and Jona-Lasinio to provide a microscopic
description of both the structure of the nucleon and of the quark to hadron
elementary fragmentation functions, we investigate the transverse momentum
dependence of the unpolarized quark distributions in the nucleon and of the
quark to pion and kaon fragmentation functions. The transverse momentum
dependence of the fragmentation functions is determined within a Monte Carlo
framework, with the notable result that the average $P_\perp^2$ of the produced
kaons is significantly larger than that of the pions. We also find that
$<P_\perp^2>$ has a sizable $z$ dependence, in contrast with the naive Gaussian
ansatz for the fragmentation functions. Diquark correlations in the nucleon
give rise to a non-trivial flavor dependence in the unpolarized transverse
momentum dependent quark distribution functions. The $<k_T^2>$ of the quarks in
the nucleon are also found to have a sizable $x$ dependence. Finally, these
results are used as input to a Monte Carlo event generator for semi-inclusive
deep inelastic scattering (SIDIS), which is used to determine the average
transverse momentum squared of the produced hadrons measured in SIDIS, namely
$<P_T^2>$. Again we find that the average $P_T^2$ of the produced kaons in
SIDIS is significantly larger than that of the pions and in each case $\la
P_T^2 \ra$ has a sizable $z$ dependence.
| [{'version': 'v1', 'created': 'Mon, 7 Nov 2011 21:04:41 GMT'}
{'version': 'v2', 'created': 'Thu, 19 Jan 2012 00:52:33 GMT'}] | 2012-01-20 | [array(['Matevosyan', 'Hrayr H.', ''], dtype=object)
array(['Bentz', 'Wolfgang', ''], dtype=object)
array(['Cloët', 'Ian C.', ''], dtype=object)
array(['Thomas', 'Anthony W.', ''], dtype=object)] |
19,509 | 2001.05796 | Pablo A. Ferrari | Pablo A. Ferrari and Leonardo T. Rolla | Slow-to-Start Traffic Model: Condensation, Saturation and Scaling Limits | 24 pages, 12 figures | null | 10.1007/s10955-020-02555-7 | null | math.PR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a one-dimensional traffic model with a slow-to-start rule. The
initial position of the cars in $\mathbb R$ is a Poisson process of parameter
$\lambda$. Cars have speed 0 or 1 and travel in the same direction. At time
zero the speed of all cars is 0; each car waits an exponential time to switch
speed from $0$ to $1$ and stops when it collides with a stopped car. When the
car is no longer blocked, it waits a new exponential time to assume speed one,
and so on. We study the emergence of condensation for the saturated regime
$\lambda>1$ and the critical regime $\lambda=1$, showing that in both regimes
all cars collide infinitely often and each car has asymptotic mean velocity
$1/\lambda$. In the saturated regime the moving cars form a point process whose
intensity tends to 1. The remaining cars condensate in a set of points whose
intensity tends to zero as $1/\sqrt t$. We study the scaling limit of the
traffic jam evolution in terms of a collection of coalescing Brownian motions.
| [{'version': 'v1', 'created': 'Thu, 16 Jan 2020 13:43:19 GMT'}] | 2020-06-24 | [array(['Ferrari', 'Pablo A.', ''], dtype=object)
array(['Rolla', 'Leonardo T.', ''], dtype=object)] |
19,510 | math/0506089 | Pietro Baldi | Pietro Baldi | Quasi-periodic solutions of the equation v_{tt}-v_{xx}+v^3=f(v) | 20 pages. Corrected some misprints, added a reference, moved
Proposition and Lemma 1 from Section 2 to the Appendix | null | null | SISSA 41/2005/M | math.AP | null | We consider 1D completely resonant nonlinear wave equations of the type
v_{tt}-v_{xx}=-v^3+O(v^4) with spatial periodic boundary conditions. We prove
the existence of a new type of quasi-periodic small amplitude solutions with
two frequencies, for more general nonlinearities. These solutions turn out to
be, at the first order, the superposition of a traveling wave and a modulation
of long period, depending only on time.
| [{'version': 'v1', 'created': 'Sun, 5 Jun 2005 21:37:33 GMT'}
{'version': 'v2', 'created': 'Wed, 6 Jul 2005 15:11:08 GMT'}] | 2007-05-23 | [array(['Baldi', 'Pietro', ''], dtype=object)] |
19,511 | 1611.02405 | Mohsen Nejad-Asghar | M. Nejad-Asghar | Modified Bonnor-Ebert spheres with ambipolar diffusion heating | 10 pages, 4 figures, accepted for publication in Ap&SS | null | 10.1007/s10509-016-2970-2 | null | astro-ph.GA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Magnetic fluctuations through the molecular cloud cores can produce ambipolar
diffusion (AD) heating, which consequently can produce temperature gradients
through the core. The aim of this paper is to investigate the effects of these
produced temperature gradients on the radius and mass of the non-isothermal
modified Bonnor-Ebert spheres (MBES). Here, we use the parameter $\kappa$ to
represent the magnetic fluctuations through the molecular cloud cores. This
parameter introduces the change of magnetic filed strength in the length-scale.
The results show that increasing of $\kappa$ leads to an increase of the radius
and mass of MBES. The most important result is existence of the gravitationally
stable high-mass prestellar cores at the low-density molecular medium with
great magnetic fluctuations.
| [{'version': 'v1', 'created': 'Tue, 8 Nov 2016 06:40:39 GMT'}] | 2016-12-07 | [array(['Nejad-Asghar', 'M.', ''], dtype=object)] |
19,512 | 1511.03406 | Kimio Kuramitsu | Shun Honda, Kimio Kuramitsu | Implementing a Small Parsing Virtual Machine on Embedded Systems | An earlier draft for future submission | null | null | null | cs.PL | http://creativecommons.org/licenses/by/4.0/ | PEGs are a formal grammar foundation for describing syntax, and are not hard
to generate parsers with a plain recursive decent parsing. However, the large
amount of C-stack consumption in the recursive parsing is not acceptable
especially in resource-restricted embedded systems. Alternatively, we have
attempted the machine virtualization approach to PEG-based parsing. MiniNez,
our implemented virtual machine, is presented in this paper with several
downsizing techniques, including instruction specialization, inline expansion
and static flow analysis. As a result, the MiniNez machine achieves both a very
small footprint and competitive performance to generated C parsers. We have
demonstrated the experimental results by comparing on two major embedded
platforms: Cortex-A7 and Intel Atom processor.
| [{'version': 'v1', 'created': 'Wed, 11 Nov 2015 07:44:04 GMT'}] | 2015-11-12 | [array(['Honda', 'Shun', ''], dtype=object)
array(['Kuramitsu', 'Kimio', ''], dtype=object)] |
19,513 | 2305.04830 | Gang Chen Professor | Xiao-Tian Zhang, Yong Hao Gao, Gang Chen | Thermal Hall effects in quantum magnets | 55 pages, 26 figures. A focused review | null | null | null | cond-mat.str-el cond-mat.mes-hall cond-mat.mtrl-sci | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In the recent years, the thermal Hall transport has risen as an important
diagnosis of the physical properties of the elementary excitations in various
quantum materials, especially among the Mott insulating systems where the
electronic transports are often featureless. Here we review the recent
development of thermal Hall effects in quantum magnets where all the relevant
excitations are charge-neutral. In addition to summarizing the existing
experiments, we pay a special attention to the underlying mechanisms of the
thermal Hall effects in various magnetic systems, and clarify the connection
between the microscopic physical variables and the emergent degrees of freedom
in different quantum phases. The external magnetic field is shown to modify the
intrinsic Berry curvature properties of various emergent and/or exotic
quasiparticle excitations in distinct fashions for different quantum systems
and quantum phases, contributing to the thermal Hall transports. These include,
for example, the conventional ones like the magnons in ordered magnets, the
triplons in dimerized magnets, the exotic and fractionalized quasparticles such
as the spinons and the magnetic monopoles in quantum spin liquids. We review
their contribution and discuss their presence in the thermal Hall conductivity
in different physical contexts. We expect this review to provide a useful
guidance for the physical mechanism of the thermal Hall transports in quantum
magnets.
| [{'version': 'v1', 'created': 'Mon, 8 May 2023 16:26:57 GMT'}] | 2023-05-09 | [array(['Zhang', 'Xiao-Tian', ''], dtype=object)
array(['Gao', 'Yong Hao', ''], dtype=object)
array(['Chen', 'Gang', ''], dtype=object)] |
19,514 | 0901.2235 | Johan Anderson | Johan Anderson and Eun-jin Kim | The momentum flux probability distribution function for
ion-temperature-gradient turbulence | 23 pages, 2 figures | Physics of Plasmas 15, 052306 (2008) | 10.1063/1.2918338 | null | physics.plasm-ph physics.flu-dyn | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | There has been overwhelming evidence that coherent structures play a critical
role in determining the overall transport in a variety of systems. We compute
the probability distribution function (PDF) tails of momentum flux and heat
flux in ion-temperature-gradient turbulence, by taking into account the
interaction among modons, which are assumed to be coherent structures
responsible for bursty and intermittent events, contributing to the PDF tails.
The tail of PDF of momentum flux $R = < v_x v_y>$ is shown to be exponential
with the form $\exp{\{-\xi R^{3/2}\}}$, which is broader than a Gaussian,
similarly to what was found in the previous local studies. An analogous
expression with the same functional dependence is found for the PDF tails of
heat flux. Furthermore, we present a detailed numerical study of the dependence
of the PDF tail on the temperature and density scale lengths and other physical
parameters through the coefficient $\xi$.
| [{'version': 'v1', 'created': 'Thu, 15 Jan 2009 11:31:22 GMT'}] | 2009-11-13 | [array(['Anderson', 'Johan', ''], dtype=object)
array(['Kim', 'Eun-jin', ''], dtype=object)] |
19,515 | 1505.04354 | Nicholas Scott | Nicholas Scott, L. M. R. Fogarty, Matt S. Owers, Scott M. Croom,
Matthew Colless, Roger L. Davies, S. Brough, Michael B. Pracy, Joss
Bland-Hawthorn, D. Heath Jones, J. T. Allen, Julia J. Bryant, Luca Cortese,
Michael Goodwin, Andrew W. Green, Iraklis S. Konstantopoulos, J.S. Lawrence,
Samuel Richards and Rob Sharp | The SAMI Pilot Survey: The Fundamental and Mass Planes in Three
Low-Redshift Clusters | 15 pages, 11 figures. Accepted for publication in MNRAS | null | null | null | astro-ph.GA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Using new integral field observations of 106 galaxies in three nearby
clusters we investigate how the intrinsic scatter of the Fundamental Plane
depends on the way in which the velocity dispersion and effective radius are
measured. Our spatially resolved spectroscopy, combined with a cluster sample
with negligible relative distance errors allows us to derive a Fundamental
Plane with minimal systematic uncertainties. From the apertures we tested, we
find that velocity dispersions measured within a circular aperture with radius
equal to one effective radius minimises the intrinsic scatter of the
Fundamental Plane. Using simple yet powerful Jeans dynamical models we
determine dynamical masses for our galaxies. Replacing luminosity in the
Fundamental Plane with dynamical mass, we demonstrate that the resulting Mass
Plane has further reduced scatter, consistent with zero intrinsic scatter.
Using these dynamical models we also find evidence for a possibly non-linear
relationship between dynamical mass-to-light ratio and velocity dispersion.
| [{'version': 'v1', 'created': 'Sun, 17 May 2015 05:12:30 GMT'}] | 2015-05-19 | [array(['Scott', 'Nicholas', ''], dtype=object)
array(['Fogarty', 'L. M. R.', ''], dtype=object)
array(['Owers', 'Matt S.', ''], dtype=object)
array(['Croom', 'Scott M.', ''], dtype=object)
array(['Colless', 'Matthew', ''], dtype=object)
array(['Davies', 'Roger L.', ''], dtype=object)
array(['Brough', 'S.', ''], dtype=object)
array(['Pracy', 'Michael B.', ''], dtype=object)
array(['Bland-Hawthorn', 'Joss', ''], dtype=object)
array(['Jones', 'D. Heath', ''], dtype=object)
array(['Allen', 'J. T.', ''], dtype=object)
array(['Bryant', 'Julia J.', ''], dtype=object)
array(['Cortese', 'Luca', ''], dtype=object)
array(['Goodwin', 'Michael', ''], dtype=object)
array(['Green', 'Andrew W.', ''], dtype=object)
array(['Konstantopoulos', 'Iraklis S.', ''], dtype=object)
array(['Lawrence', 'J. S.', ''], dtype=object)
array(['Richards', 'Samuel', ''], dtype=object)
array(['Sharp', 'Rob', ''], dtype=object)] |
19,516 | 2101.11871 | Pengwei Zhan | Pengwei Zhan, Liming Wang, Yi Tang | Website fingerprinting on early QUIC traffic | This work has been accepted by Elsevier Computer Networks for
publication | Computer Networks 200 (2021) 108538 | 10.1016/j.comnet.2021.108538 | null | cs.CR cs.LG cs.NI | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Cryptographic protocols have been widely used to protect the user's privacy
and avoid exposing private information. QUIC (Quick UDP Internet Connections),
including the version originally designed by Google (GQUIC) and the version
standardized by IETF (IQUIC), as alternatives to the traditional HTTP,
demonstrate their unique transmission characteristics: based on UDP for
encrypted resource transmitting, accelerating web page rendering. However,
existing encrypted transmission schemes based on TCP are vulnerable to website
fingerprinting (WFP) attacks, allowing adversaries to infer the users' visited
websites by eavesdropping on the transmission channel. Whether GQUIC and IQUIC
can effectively resist such attacks is worth investigating. In this paper, we
study the vulnerabilities of GQUIC, IQUIC, and HTTPS to WFP attacks from the
perspective of traffic analysis. Extensive experiments show that, in the early
traffic scenario, GQUIC is the most vulnerable to WFP attacks among GQUIC,
IQUIC, and HTTPS, while IQUIC is more vulnerable than HTTPS, but the
vulnerability of the three protocols is similar in the normal full traffic
scenario. Features transferring analysis shows that most features are
transferable between protocols when on normal full traffic scenario. However,
combining with the qualitative analysis of latent feature representation, we
find that the transferring is inefficient when on early traffic, as GQUIC,
IQUIC, and HTTPS show the significantly different magnitude of variation in the
traffic distribution on early traffic. By upgrading the one-time WFP attacks to
multiple WFP Top-a attacks, we find that the attack accuracy on GQUIC and IQUIC
reach 95.4% and 95.5%, respectively, with only 40 packets and just using simple
features, whereas reach only 60.7% when on HTTPS. We also demonstrate that the
vulnerability of IQUIC is only slightly dependent on the network environment.
| [{'version': 'v1', 'created': 'Thu, 28 Jan 2021 08:53:51 GMT'}
{'version': 'v2', 'created': 'Mon, 15 Nov 2021 14:27:42 GMT'}] | 2021-11-16 | [array(['Zhan', 'Pengwei', ''], dtype=object)
array(['Wang', 'Liming', ''], dtype=object)
array(['Tang', 'Yi', ''], dtype=object)] |
19,517 | 1407.6443 | Zaqueu Alves Ramos | Barbara Costa, Zaqueu Ramos, Aron Simis | A theorem about Cremona maps and symbolic Rees algebras | 17 pages | null | null | null | math.AC | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | This work is about the structure of the symbolic Rees algebra of the base
ideal of a Cremona map. We give sufficient conditions under which this algebra
has the "expected form" in some sense. The main theorem in this regard
seemingly covers all previous results on the subject so far. The proof relies
heavily on a criterion of birationality and the use of the so-called inversion
factor of a Cremona map. One adds a pretty long selection of examples of plane
and space Cremona maps tested against the conditions of the theorem, with
special emphasis on Cohen--Macaulay base ideals.
| [{'version': 'v1', 'created': 'Thu, 24 Jul 2014 04:02:07 GMT'}] | 2014-07-25 | [array(['Costa', 'Barbara', ''], dtype=object)
array(['Ramos', 'Zaqueu', ''], dtype=object)
array(['Simis', 'Aron', ''], dtype=object)] |
19,518 | 1405.3962 | Mojtaba Raouf Hajar Zarrin | Mojtaba Raouf and Habib G. Khosroshahi and Trevor J. Ponman and Ali A.
Dariush and Alireza Molaeinezhad and Saeed Tavasoli | Ultimate age-dating method for galaxy groups; clues from the Millennium
Simulations | 10 page, 5 figures, Accepted for publication in MNRAS | null | 10.1093/mnras/stu963 | null | astro-ph.CO astro-ph.GA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | There have been a number of studies dedicated to identification of fossil
galaxy groups, arguably groups with a relatively old formation epoch. Most of
such studies identify fossil groups, primarily based on a large luminosity gap,
which is the magnitude gap between the two most luminous galaxies in the group.
Studies of these types of groups in the millennium cosmological simulations
show that, although they have accumulated a significant fraction of their mass,
relatively earlier than groups with a small luminosity gap, this parameter
alone is not highly efficient in fully discriminating between the "old" and
"young" galaxy groups, a label assigned based on halo mass accumulation
history.
We study galaxies drawn from the semi-analytic models of Guo et al. (2011),
based on the Millennium Simulation. We establish a set of four observationally
measurable parameters which can be used in combination, to identify a subset of
galaxy groups which are old, with a very high probability. We thus argue that a
sample of fossil groups selected based on luminosity gap will result in a
contaminated sample of old galaxy groups. By adding constraints on the
luminosity of the brightest galaxy, and its offset from the group luminosity
centroid, we can considerably improve the age-dating.
| [{'version': 'v1', 'created': 'Thu, 15 May 2014 19:36:19 GMT'}
{'version': 'v2', 'created': 'Fri, 16 May 2014 06:09:54 GMT'}] | 2014-05-19 | [array(['Raouf', 'Mojtaba', ''], dtype=object)
array(['Khosroshahi', 'Habib G.', ''], dtype=object)
array(['Ponman', 'Trevor J.', ''], dtype=object)
array(['Dariush', 'Ali A.', ''], dtype=object)
array(['Molaeinezhad', 'Alireza', ''], dtype=object)
array(['Tavasoli', 'Saeed', ''], dtype=object)] |
19,519 | 1012.3806 | Paul Fendley | S.V. Isakov, P. Fendley, A.W.W. Ludwig, S. Trebst and M. Troyer | Dynamics at and near conformal quantum critical points | 13 pages, 11 figures. v2: title change, added discussion of
systematic error, fixed typos | Phys. Rev. B 83, 125114 (2011) | 10.1103/PhysRevB.83.125114 | null | cond-mat.str-el cond-mat.stat-mech hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We explore the dynamical behavior at and near a special class of
two-dimensional quantum critical points. Each is a conformal quantum critical
point (CQCP), where in the scaling limit the equal-time correlators are those
of a two-dimensional conformal field theory. The critical theories include the
square-lattice quantum dimer model, the quantum Lifshitz theory, and a deformed
toric code model. We show that under generic perturbation the latter flows
toward the ordinary Lorentz-invariant (2+1) dimensional Ising critical point,
illustrating that CQCPs are generically unstable. We exploit a correspondence
between the classical and quantum dynamical behavior in such systems to perform
an extensive numerical study of two lines of CQCPs in a quantum eight-vertex
model, or equivalently, two coupled deformed toric codes. We find that the
dynamical critical exponent z remains 2 along the U(1)-symmetric quantum
Lifshitz line, while it continuously varies along the line with only Z_2
symmetry. This illustrates how two CQCPs can have very different dynamical
properties, despite identical equal-time ground-state correlators. Our results
equally apply to the dynamics of the corresponding purely classical models.
| [{'version': 'v1', 'created': 'Fri, 17 Dec 2010 04:21:49 GMT'}
{'version': 'v2', 'created': 'Fri, 25 Mar 2011 19:33:46 GMT'}] | 2011-03-28 | [array(['Isakov', 'S. V.', ''], dtype=object)
array(['Fendley', 'P.', ''], dtype=object)
array(['Ludwig', 'A. W. W.', ''], dtype=object)
array(['Trebst', 'S.', ''], dtype=object)
array(['Troyer', 'M.', ''], dtype=object)] |
19,520 | 1402.5105 | Masato Mimura | Masato Mimura, Narutaka Ozawa, Hiroki Sako, Yuhei Suzuki | Group approximation in Cayley topology and coarse geometry, Part III:
Geometric property (T) | 20 pages, Appendix withdrawn due to the error in the proof of Theorem
A.2 (v3); 24 pages, Appendix added (v2); 20 pages, no figure | Alg. and Geom. Topol., 15 (2015), no.2, 1067--1091 | 10.2140/agt.2015.15.1067 | null | math.OA math.GR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this series of papers, we study correspondence between the following: (1)
large scale structure of the metric space bigsqcup_m {Cay(G(m))} consisting of
Cayley graphs of finite groups with k generators; (2) structure of groups which
appear in the boundary of the set {G(m)}_m in the space of k-marked groups. In
this third part of the series, we show the correspondence among the metric
properties `geometric property (T),' `cohomological property (T),' and the
group property `Kazhdan's property (T).' Geometric property (T) of Willett--Yu
is stronger than being expander graphs. Cohomological property (T) is stronger
than geometric property (T) for general coarse spaces.
| [{'version': 'v1', 'created': 'Thu, 20 Feb 2014 19:09:40 GMT'}
{'version': 'v2', 'created': 'Mon, 24 Feb 2014 20:16:47 GMT'}
{'version': 'v3', 'created': 'Mon, 3 Mar 2014 16:10:38 GMT'}] | 2015-05-26 | [array(['Mimura', 'Masato', ''], dtype=object)
array(['Ozawa', 'Narutaka', ''], dtype=object)
array(['Sako', 'Hiroki', ''], dtype=object)
array(['Suzuki', 'Yuhei', ''], dtype=object)] |
19,521 | 1911.11334 | Aleksandr Rodin | Keian Noori and Hillol Biswas and Su Ying Quek and Aleksandr Rodin | Graphene-mediated interaction between adsorbed impurities | 9 pages, 8 figures | null | null | null | cond-mat.mes-hall | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Interaction between adsorbed atoms in graphene is studied using a combination
of DFT and the path integral formalism. Our results reveal a complex
non-monotonic interaction profile. We show that the strength and sign of the
interaction are dictated by the arrangement of impurities, as well as the
system doping. These findings can be used to interpret the complex behavior of
impurities in experimentally realized systems, as well as other classes of
impurities, such as C substitutions in graphene.
| [{'version': 'v1', 'created': 'Tue, 26 Nov 2019 04:28:48 GMT'}] | 2019-11-27 | [array(['Noori', 'Keian', ''], dtype=object)
array(['Biswas', 'Hillol', ''], dtype=object)
array(['Quek', 'Su Ying', ''], dtype=object)
array(['Rodin', 'Aleksandr', ''], dtype=object)] |
19,522 | 0908.4170 | Ricardo Sa Earp | Ricardo S\'a Earp, Eric Toubiana (IMJ) | Minimal graphs in H^n xR and R^{n+1} | null | null | null | null | math.DG math.AP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We construct geometric barriers for minimal graphs in H^n xR. We prove the
existence and uniqueness of a solution of the vertical minimal equation in the
interior of a convex polyhedron in H^n extending continuously to the interior
of each face, taking infinite boundary data on one face and zero boundary value
data on the other faces. In H^n xR, we solve the Dirichlet problem for the
vertical minimal equation in a C^0 convex domain taking arbitrarily continuous
finite boundary and asymptotic boundary data. We prove the existence of another
Scherk type hypersurface, given by the solution of the vertical minimal
equation in the interior of certain admissible polyhedron taking alternatively
infinite values +\infty and -\infty on adjacent faces of this polyhedron. Those
polyhedra may be chosen convex or non convex. We establish analogous results
for minimal graphs when the ambient is the Euclidean space R^ {n+1}.
| [{'version': 'v1', 'created': 'Fri, 28 Aug 2009 09:40:34 GMT'}
{'version': 'v2', 'created': 'Tue, 15 Dec 2009 13:38:14 GMT'}] | 2009-12-15 | [array(['Earp', 'Ricardo Sá', '', 'IMJ'], dtype=object)
array(['Toubiana', 'Eric', '', 'IMJ'], dtype=object)] |
19,523 | hep-th/0306013 | Giovanni Amelino-Camelia | Alessandra Agostini, Giovanni Amelino-Camelia, Francesco D'Andrea | Hopf-algebra description of noncommutative-spacetime symmetries | 20 pages, no figures, LaTex. This version has exactly the same
technical content as version 1, but the observation reported in Section VII
is discussed more pedagogically | Int.J.Mod.Phys. A19 (2004) 5187-5220 | 10.1142/S0217751X04020919 | null | hep-th gr-qc hep-ph | null | In the study of certain noncommutative versions of Minkowski spacetime there
is still a large ambiguity concerning the characterization of their symmetries.
Adopting as our case study the kappaMinkowski noncommutative space-time, on
which a large literature is already available, we propose a line of analysis of
noncommutative-spacetime symmetries that relies on the introduction of a Weyl
map (connecting a given function in the noncommutative Minkowski with a
corresponding function in commutative Minkowski) and of a compatible notion of
integration in the noncommutative spacetime. We confirm (and we establish more
robustly) previous suggestions that the commutative-spacetime notion of
Lie-algebra symmetries must be replaced, in the noncommutative-spacetime
context, by the one of Hopf-algebra symmetries. We prove that in kappaMinkowski
it is possible to construct an action which is invariant under a Poincare-like
Hopf algebra of symmetries with 10 generators, in which the noncommutativity
length scale has the role of relativistic invariant. The approach here adopted
does leave one residual ambiguity, which pertains to the description of the
translation generators, but our results, independently of this ambiguity, are
sufficient to clarify that some recent studies (gr-qc/0212128 and
hep-th/0301061), which argued for an operational indistiguishability between
theories with and without a length-scale relativistic invariant, implicitly
assumed that the underlying spacetime would be classical.
| [{'version': 'v1', 'created': 'Tue, 3 Jun 2003 01:50:36 GMT'}
{'version': 'v2', 'created': 'Sat, 21 Jun 2003 01:53:47 GMT'}] | 2009-11-10 | [array(['Agostini', 'Alessandra', ''], dtype=object)
array(['Amelino-Camelia', 'Giovanni', ''], dtype=object)
array(["D'Andrea", 'Francesco', ''], dtype=object)] |
19,524 | 1104.3551 | Javier Magnin | C. Avila, L. Salazar-Garcia, J.C. Sanabria and J. Magnin | The structure of the strange sea of the proton | 5 pages, 5 figures | null | null | null | hep-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this work we study the strange sea of the proton using a version of the
Meson Cloud Model containing both, efective and perturbative degrees of
freedom. We construct the $s$ and $\bar{s}$ parton distributions functions at
the initial energy scale, $Q_0^2$, where QCD evolution starts. The initial $s$
and $\bar s$ pdfs depend on a number of parameters which we fix by comparison
to parameterizations of the strange sea of the nucleon obtained in a recent
global fit to experimental data, allowing for a $s-\bar{s}$ asymmetry. We show
that the model describes well the strange sea of the proton and argue that it
can be a phenomenologically motivated alternative to the usual input
parameterizations used in fits to experimental DIS data.
| [{'version': 'v1', 'created': 'Mon, 18 Apr 2011 17:59:47 GMT'}] | 2011-04-19 | [array(['Avila', 'C.', ''], dtype=object)
array(['Salazar-Garcia', 'L.', ''], dtype=object)
array(['Sanabria', 'J. C.', ''], dtype=object)
array(['Magnin', 'J.', ''], dtype=object)] |
19,525 | 1007.1959 | Roberto Soler | Roberto Soler, Inigo Arregui, Ramon Oliver, and Jose Luis Ballester | Seismology of Standing Kink Oscillations of Solar Prominence Fine
Structures | Accepted for publication in ApJ | null | 10.1088/0004-637X/722/2/1778 | null | astro-ph.SR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate standing kink magnetohydrodynamic (MHD) oscillations in a
prominence fine structure modeled as a straight and cylindrical magnetic tube
only partially filled with the prominence material, and with its ends fixed at
two rigid walls representing the solar photosphere. The prominence plasma is
partially ionized and a transverse inhomogeneous transitional layer is included
between the prominence thread and the coronal medium. Thus, ion-neutral
collisions and resonant absorption are the considered damping mechanisms.
Approximate analytical expressions of the period, the damping time, and their
ratio are derived for the fundamental mode in the thin tube and thin boundary
approximations. We find that the dominant damping mechanism is resonant
absorption, which provides damping ratios in agreement with the observations,
whereas ion-neutral collisions are irrelevant for the damping. The values of
the damping ratio are independent of both the prominence thread length and its
position within the magnetic tube, and coincide with the values for a tube
fully filled with the prominence plasma. The implications of our results in the
context of the MHD seismology technique are discussed, pointing out that the
reported short-period (2 - 10 min) and short-wavelength (700 - 8,000 km) thread
oscillations may not be consistent with a standing mode interpretation and
could be related to propagating waves. Finally, we show that the inversion of
some prominence physical parameters, e.g., Alfv\'en speed, magnetic field
strength, transverse inhomogeneity length-scale, etc., is possible using
observationally determined values of the period and damping time of the
oscillations along with the analytical approximations of these quantities.
| [{'version': 'v1', 'created': 'Mon, 12 Jul 2010 18:52:43 GMT'}
{'version': 'v2', 'created': 'Mon, 30 Aug 2010 13:19:44 GMT'}] | 2015-05-19 | [array(['Soler', 'Roberto', ''], dtype=object)
array(['Arregui', 'Inigo', ''], dtype=object)
array(['Oliver', 'Ramon', ''], dtype=object)
array(['Ballester', 'Jose Luis', ''], dtype=object)] |
19,526 | 2109.07966 | Emmanuelle Rio | Jonas Miguet, Marina Pasquet, Florence Rouyer, Yuan Fang, Emmanuelle
Rio | Marginal regeneration-induced drainage of surface bubbles | null | Phys. Rev. Fluids 6, 101601 (2021) | 10.1103/PhysRevFluids.6.L101601 | null | physics.flu-dyn cond-mat.soft | http://creativecommons.org/licenses/by/4.0/ | The prediction of the lifetime of surface bubbles necessitates a better
understanding of the thinning dynamics of the bubble cap. In 1959, Mysel
\textit{et al.} \cite{mysels1959soap}, proposed that \textit{marginal
regeneration} i.e. the rise of patches, thinner than the film should be taken
into account to describe the film drainage. Nevertheless, an accurate
description of these buoyant patches and of their dynamics as well as a
quantification of their contribution to the thinning dynamics is still lacking.
In this paper, we visualize the patches, and show that their rising velocities
and sizes are in good agreement with models respectively based on the balance
of gravitational and surface viscous forces and on a Rayleigh-Taylor like
instability \cite{Seiwert2017,Shabalina2019}. Our results suggest that, in an
environment saturated in humidity, the drainage induced by their dynamics
correctly describes the film drainage at the apex of the bubble within the
experimental error bars. We conclude that the film thinning of soap bubbles is
indeed controlled, to a large extent, by \textit{marginal regeneration} in the
absence of evaporation.
| [{'version': 'v1', 'created': 'Thu, 16 Sep 2021 13:20:22 GMT'}] | 2021-10-13 | [array(['Miguet', 'Jonas', ''], dtype=object)
array(['Pasquet', 'Marina', ''], dtype=object)
array(['Rouyer', 'Florence', ''], dtype=object)
array(['Fang', 'Yuan', ''], dtype=object)
array(['Rio', 'Emmanuelle', ''], dtype=object)] |
19,527 | 1902.09723 | Fereshteh Jafariakinabad | Fereshteh Jafariakinabad, Sansiri Tarnpradab, Kien A. Hua | Syntactic Recurrent Neural Network for Authorship Attribution | null | null | null | null | cs.CL cs.LG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Writing style is a combination of consistent decisions at different levels of
language production including lexical, syntactic, and structural associated to
a specific author (or author groups). While lexical-based models have been
widely explored in style-based text classification, relying on content makes
the model less scalable when dealing with heterogeneous data comprised of
various topics. On the other hand, syntactic models which are
content-independent, are more robust against topic variance. In this paper, we
introduce a syntactic recurrent neural network to encode the syntactic patterns
of a document in a hierarchical structure. The model first learns the syntactic
representation of sentences from the sequence of part-of-speech tags. For this
purpose, we exploit both convolutional filters and long short-term memories to
investigate the short-term and long-term dependencies of part-of-speech tags in
the sentences. Subsequently, the syntactic representations of sentences are
aggregated into document representation using recurrent neural networks. Our
experimental results on PAN 2012 dataset for authorship attribution task shows
that syntactic recurrent neural network outperforms the lexical model with the
identical architecture by approximately 14% in terms of accuracy.
| [{'version': 'v1', 'created': 'Tue, 26 Feb 2019 04:32:42 GMT'}
{'version': 'v2', 'created': 'Wed, 27 Feb 2019 02:54:33 GMT'}] | 2019-02-28 | [array(['Jafariakinabad', 'Fereshteh', ''], dtype=object)
array(['Tarnpradab', 'Sansiri', ''], dtype=object)
array(['Hua', 'Kien A.', ''], dtype=object)] |
19,528 | 1701.05025 | Christos-Raent Onti | Christos-Raent Onti and Theodoros Vlachos | Topological obstructions for submanifolds in low codimension | arXiv admin note: text overlap with arXiv:1610.07349, arXiv:1008.1179 | null | null | null | math.DG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We prove integral curvature bounds in terms of the Betti numbers for compact
submanifolds of the Euclidean space with low codimension. As an application, we
obtain topological obstructions for $\delta$-pinched immersions. Furthermore,
we obtain intrinsic obstructions for minimal submanifolds in spheres with
pinched second fundamental form.
| [{'version': 'v1', 'created': 'Wed, 18 Jan 2017 12:07:03 GMT'}] | 2017-01-26 | [array(['Onti', 'Christos-Raent', ''], dtype=object)
array(['Vlachos', 'Theodoros', ''], dtype=object)] |
19,529 | 2110.07869 | Li Zhou | Li Zhou, Wenyu Chen, Dingyi Zeng, Shaohuan Cheng, Wanlong Liu, Hong Qu | A Dual-Perception Graph Neural Network with Multi-hop Graph Generator | 9 pages | null | null | null | cs.LG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Graph neural networks (GNNs) have drawn increasing attention in recent years
and achieved remarkable performance in many graph-based tasks, especially in
semi-supervised learning on graphs. However, most existing GNNs excessively
rely on topological structures and aggregate multi-hop neighborhood information
by simply stacking network layers, which may introduce superfluous noise
information, limit the expressive power of GNNs and lead to the over-smoothing
problem ultimately. In light of this, we propose a novel Dual-Perception Graph
Neural Network (DPGNN) to address these issues. In DPGNN, we utilize node
features to construct a feature graph, and perform node representations
learning based on the original topology graph and the constructed feature graph
simultaneously, which conduce to capture the structural neighborhood
information and the feature-related information. Furthermore, we design a
Multi-Hop Graph Generator (MHGG), which applies a node-to-hop attention
mechanism to aggregate node-specific multi-hop neighborhood information
adaptively. Finally, we apply self-ensembling to form a consistent prediction
for unlabeled node representations. Experimental results on five datasets with
different topological structures demonstrate that our proposed DPGNN
outperforms all the latest state-of-the-art models on all datasets, which
proves the superiority and versatility of our model. The source code of our
model is available at https://github.com.
| [{'version': 'v1', 'created': 'Fri, 15 Oct 2021 05:47:26 GMT'}
{'version': 'v2', 'created': 'Fri, 22 Oct 2021 11:21:42 GMT'}] | 2021-10-25 | [array(['Zhou', 'Li', ''], dtype=object)
array(['Chen', 'Wenyu', ''], dtype=object)
array(['Zeng', 'Dingyi', ''], dtype=object)
array(['Cheng', 'Shaohuan', ''], dtype=object)
array(['Liu', 'Wanlong', ''], dtype=object)
array(['Qu', 'Hong', ''], dtype=object)] |
19,530 | hep-th/9411005 | null | L. A. Dickey | On the constrained KP hierarchy II | 6 pages, LaTeX | Lett. Math. Phys. 35 (1995) 229-236 | 10.1007/BF00761295 | null | hep-th math.QA q-alg | null | A constrained KP hierarchy is discussed that was recently suggested by Aratyn
et al. and by Bonora et al. This hierarchy is a restriction of the KP to a
submanifold of operators which can be represented as a ratio of two purely
differential operators of prescribed orders. Explicit formulas for action of
vector fields on these two differential operators are written which gives a new
description of the hierarchy and provides a new, more constructive, proof of
compatibility of the constraint with the hierarchy. Also the Poisson structure
of the constrained hierarchy is discussed.
| [{'version': 'v1', 'created': 'Tue, 1 Nov 1994 16:57:00 GMT'}] | 2009-10-28 | [array(['Dickey', 'L. A.', ''], dtype=object)] |
19,531 | 0906.1678 | Ellen Baake | Ute von Wangenheim, Ellen Baake, Michael Baake | Single--crossover recombination in discrete time | J. Math. Biol., in press | J. Math. Biol. 60 (2010), 727-760 | null | null | q-bio.PE math.DS q-bio.CB | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Modelling the process of recombination leads to a large coupled nonlinear
dynamical system. Here, we consider a particular case of recombination in {\em
discrete} time, allowing only for {\em single crossovers}. While the analogous
dynamics in {\em continuous} time admits a closed solution, this no longer
works for discrete time. A more general model (i.e. without the restriction to
single crossovers) has been studied before and was solved algorithmically by
means of Haldane linearisation. Using the special formalism introduced by Baake
and Baake (2003), we obtain further insight into the single-crossover dynamics
and the particular difficulties that arise in discrete time. We then transform
the equations to a solvable system in a two-step procedure: linearisation
followed by diagonalisation. Still, the coefficients of the second step must be
determined in a recursive manner, but once this is done for a given system,
they allow for an explicit solution valid for all times.
| [{'version': 'v1', 'created': 'Tue, 9 Jun 2009 09:52:12 GMT'}] | 2011-01-12 | [array(['von Wangenheim', 'Ute', ''], dtype=object)
array(['Baake', 'Ellen', ''], dtype=object)
array(['Baake', 'Michael', ''], dtype=object)] |
19,532 | 1704.04328 | Yu Chang-shui | Jun Zhang, Yang Zhang, Chang-shui Yu | The Measurement-Disturbance Relation and the Disturbance Trade-off
Relation in Terms of Relative Entropy | 6 pages, 4 figures | Int J Theor Phys (2016) 55:3943 | null | null | quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We employ quantum relative entropy to establish the relation between the
measurement uncertainty and its disturbance on a state in the presence (and
absence) of quantum memory. For two incompatible observables, we present the
measurement-disturbance relation and the disturbance trade-off relation. We
find that without quantum memory the disturbance induced by the measurement is
never less than the measurement uncertainty and with quantum memory they depend
on the conditional entropy of the measured state. We also generalize these
relations to the case with multiple measurements. These relations are
demonstrated by two examples.
| [{'version': 'v1', 'created': 'Fri, 14 Apr 2017 02:05:05 GMT'}] | 2017-04-17 | [array(['Zhang', 'Jun', ''], dtype=object)
array(['Zhang', 'Yang', ''], dtype=object)
array(['Yu', 'Chang-shui', ''], dtype=object)] |
19,533 | 2306.15186 | Hung Pham | Hung Q. Pham, Runsheng Ouyang, and Dingshun Lv | Scalable Quantum Monte Carlo with Direct-Product Trial Wave Functions | 12 pages, 9 figures | null | null | null | physics.chem-ph cond-mat.str-el | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The computational demand posed by applying multi-Slater determinant trials in
phaseless auxiliary-field quantum Monte Carlo methods (MSD-AFQMC) is
particularly significant for molecules exhibiting strong correlations. Here, we
propose using direct-product wave functions as trials for MSD-AFQMC, aiming to
reduce computational overhead by leveraging the compactness of multi-Slater
determinant trials in direct-product form (DP-MSD). This efficiency arises when
the active space can be divided into non-coupling subspaces, a condition we
term "decomposable active space". By employing localized-active space
self-consistent field wave functions as an example of such trials, we
demonstrate our proposed approach in various molecular systems. Our findings
indicate that the compact DP-MSD trials can reduce computational costs
substantially, by up to 36 times for the \ce{C2H6N4} molecule where the two
double bonds between nitrogen \ce{N=N} are clearly separated by a \ce{C-C}
single bond, while maintaining accuracy when active spaces are decomposable.
However, for systems where these active subspaces strongly couple, a scenario
we refer to as "strong subspace coupling", the method's accuracy decreases
compared to that achieved with a complete active space approach. We anticipate
that our method will be beneficial for systems with non-coupling to
weakly-coupling subspaces that require local multireference treatments.
| [{'version': 'v1', 'created': 'Tue, 27 Jun 2023 04:09:22 GMT'}] | 2023-06-28 | [array(['Pham', 'Hung Q.', ''], dtype=object)
array(['Ouyang', 'Runsheng', ''], dtype=object)
array(['Lv', 'Dingshun', ''], dtype=object)] |
19,534 | 1507.01328 | Jason Priem | Jason Priem | Altmetrics (Chapter from Beyond Bibliometrics: Harnessing
Multidimensional Indicators of Scholarly Impact) | Published in Cronin, B., & Sugimoto, C. R. (2014). Beyond
Bibliometrics: Harnessing Multidimensional Indicators of Scholarly Impact (1
edition). Cambridge, Massachusetts: The MIT Press.
https://mitpress.mit.edu/books/beyond-bibliometrics | null | null | null | cs.DL | http://creativecommons.org/licenses/by/4.0/ | This chapter discusses altmetrics (short for "alternative metrics"), an
approach to uncovering previously-invisible traces of scholarly impact by
observing activity in online tools and systems. I argue that citations, while
useful, miss many important kinds of impacts, and that the increasing scholarly
use of online tools like Mendeley, Twitter, and blogs may allow us to measure
these hidden impacts. Next, I define altmetrics and discuss research on
altmetric sources--both research mapping the growth of these sources, and
scientometric research measuring activity on them. Following a discussion of
the potential uses of altmetrics, I consider the limitations of altmetrics and
recommend areas ripe for future research.
| [{'version': 'v1', 'created': 'Mon, 6 Jul 2015 05:08:25 GMT'}] | 2015-07-07 | [array(['Priem', 'Jason', ''], dtype=object)] |
19,535 | 2211.01066 | Wataru Iwashita | Wataru Iwashita, Hiroshi Matsukawa, Michio Otsuki | Static Friction Coefficient Depends on the External Pressure and Block
Shape due to Precursor Slip | 11 pages, 6 figures; Supplementary Information 9 pages, 3 figures; 2
ancillary files (Supplementary Video) attached | Sci. Rep. 13, 2511 (2023) | 10.1038/s41598-023-29764-w | null | cond-mat.mtrl-sci cond-mat.soft cond-mat.stat-mech physics.class-ph | http://creativecommons.org/licenses/by/4.0/ | Amontons' law states that the maximum static friction force on a solid object
is proportional to the loading force and is independent of the apparent contact
area. This law indicates that the static friction coefficient does not depend
on the external pressure or object shape. Here, we numerically investigate the
sliding motion of a 3D viscoelastic block on a rigid substrate using the finite
element method (FEM). The macroscopic static friction coefficient decreases
with an increase in the external pressure, length, or width of the object,
which contradicts Amontons' law. Precursor slip occurs in the 2D interface
between the block and substrate before bulk sliding. The decrease in the
macroscopic static friction coefficient is scaled by the critical area of the
precursor slip before bulk sliding. A theoretical analysis of the simplified
models reveals that bulk sliding results from the instability of the
quasi-static precursor slip caused by velocity-weakening local friction. We
also show that the critical slip area determines the macroscopic static
friction coefficient, which explains the results of the FEM simulation.
| [{'version': 'v1', 'created': 'Wed, 2 Nov 2022 12:00:45 GMT'}
{'version': 'v2', 'created': 'Fri, 20 Jan 2023 14:11:40 GMT'}] | 2023-02-14 | [array(['Iwashita', 'Wataru', ''], dtype=object)
array(['Matsukawa', 'Hiroshi', ''], dtype=object)
array(['Otsuki', 'Michio', ''], dtype=object)] |
19,536 | 1408.0244 | Manfred Bucher | Manfred Bucher | Less trouble with orbits: The semi-classical hydrogen problem in
parabolic and spherical coordinates | 10 pages, Change from version 1: correction of Ref. 2 | null | null | null | physics.hist-ph | http://creativecommons.org/licenses/by-nc-sa/3.0/ | Historically, the eccentricity of Sommerfeld orbits from quantization
conditions in either parabolic or spherical coordinates was found to differ in
almost all cases. To do the orbit comparison correctly, one must use amended
instead of traditional Sommerfeld orbits.
| [{'version': 'v1', 'created': 'Tue, 3 Jun 2014 19:36:41 GMT'}
{'version': 'v2', 'created': 'Tue, 14 Oct 2014 21:58:24 GMT'}] | 2014-10-16 | [array(['Bucher', 'Manfred', ''], dtype=object)] |
19,537 | 1807.01629 | Francisco Tello Ortiz | Jorge Bellorin, Alvaro Restuccia and Francisco Tello-Ortiz | The anisotropic coupling of gravity and electromagnetism in
Ho\v{r}ava-Lifshitz theory | null | Phys. Rev. D 98, 104018 (2018) | 10.1103/PhysRevD.98.104018 | null | hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We analyze the electromagnetic-gravity interaction in a pure
Ho\v{r}ava-Lifshitz framework. To do so we formulate the Ho\v{r}ava-Lifshitz
gravity in $4+1$ dimensions and perform a Kaluza-Klein reduction to $3+1$
dimensions. We use this reduction as a mathematical procedure to obtain the
$3+1$ coupled theory, which at the end is considered as a fundamental,
self-consistent, theory. The critical value of the dimensionless coupling
constant in the kinetic term of the action is $\lambda=1/4$. It is the kinetic
conformal point for the non-relativistic electromagnetic-gravity interaction.
In distinction, the corresponding kinetic conformal value for pure
Ho\v{r}ava-Lifshitz gravity in $3+1$ dimensions is $\lambda=1/3$. We analyze
the geometrical structure of the critical and noncritical cases, they
correspond to different theories. The physical degrees of freedom propagated by
the noncritical theory are the transverse traceless graviton, the transverse
gauge vector and two scalar fields. In the critical theory one of the scalars
is absent, only the dilaton scalar field is present. The gravity and vector
excitations propagate with the same speed, which at low energy can be taken to
be the speed of light. The field equations for the gauge vector in the
non-relativistic theory have exactly the same form as the relativistic
electromagnetic field equations arising from the Kaluza-Klein reduction of
General Relativity, and are equal to them for a particular value of one of the
coupling constants. The potential in the Hamiltonian is a polynomial of finite
degree in the gauge vector and its covariant derivatives.
| [{'version': 'v1', 'created': 'Wed, 4 Jul 2018 15:14:36 GMT'}
{'version': 'v2', 'created': 'Wed, 25 Jul 2018 01:23:57 GMT'}
{'version': 'v3', 'created': 'Mon, 8 Oct 2018 09:35:43 GMT'}] | 2018-11-21 | [array(['Bellorin', 'Jorge', ''], dtype=object)
array(['Restuccia', 'Alvaro', ''], dtype=object)
array(['Tello-Ortiz', 'Francisco', ''], dtype=object)] |
19,538 | math/0606793 | Dan Knopf | Christine Guenther, James Isenberg, Dan Knopf | Linear stability of homogeneous Ricci solitons | This is an expanded version that proves linear stability of all
explicitly known nonproduct examples of homogeneous expanding Ricci solitons
on nilpotent or solvable Lie groups. (To appear in Int. Math. Res. Not.) | null | null | null | math.DG math.AP | null | As a step toward understanding the analytic behavior of Type-III Ricci flow
singularities, i.e. immortal solutions that exhibit |Rm|<C/t curvature decay,
we examine the linearization of an equivalent flow at fixed points discovered
recently by Baird--Danielo and Lott: nongradient homogeneous expanding Ricci
solitons on nilpotent or solvable Lie groups. For all explicitly known
nonproduct examples, we demonstrate linear stability of the flow at these fixed
points and prove that the linearizations generate strongly continuous
semigroups.
| [{'version': 'v1', 'created': 'Fri, 30 Jun 2006 15:21:33 GMT'}
{'version': 'v2', 'created': 'Sat, 1 Jul 2006 23:40:24 GMT'}
{'version': 'v3', 'created': 'Tue, 4 Jul 2006 16:40:02 GMT'}
{'version': 'v4', 'created': 'Thu, 2 Nov 2006 16:06:46 GMT'}] | 2007-05-23 | [array(['Guenther', 'Christine', ''], dtype=object)
array(['Isenberg', 'James', ''], dtype=object)
array(['Knopf', 'Dan', ''], dtype=object)] |
19,539 | 2303.11615 | Jiawei Wang | Jiawei Wang, Weihong Lin, Chixiang Ma, Mingze Li, Zheng Sun, Lei Sun,
Qiang Huo | Robust Table Structure Recognition with Dynamic Queries Enhanced
Detection Transformer | 18 pages, 11 figures, Preprint. arXiv admin note: substantial text
overlap with arXiv:2208.04921 | null | null | null | cs.CV | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a new table structure recognition (TSR) approach, called
TSRFormer, to robustly recognizing the structures of complex tables with
geometrical distortions from various table images. Unlike previous methods, we
formulate table separation line prediction as a line regression problem instead
of an image segmentation problem and propose a new two-stage dynamic queries
enhanced DETR based separation line regression approach, named DQ-DETR, to
predict separation lines from table images directly. Compared to Vallina DETR,
we propose three improvements in DQ-DETR to make the two-stage DETR framework
work efficiently and effectively for the separation line prediction task: 1) A
new query design, named Dynamic Query, to decouple single line query into
separable point queries which could intuitively improve the localization
accuracy for regression tasks; 2) A dynamic queries based progressive line
regression approach to progressively regressing points on the line which
further enhances localization accuracy for distorted tables; 3) A
prior-enhanced matching strategy to solve the slow convergence issue of DETR.
After separation line prediction, a simple relation network based cell merging
module is used to recover spanning cells. With these new techniques, our
TSRFormer achieves state-of-the-art performance on several benchmark datasets,
including SciTSR, PubTabNet, WTW and FinTabNet. Furthermore, we have validated
the robustness and high localization accuracy of our approach to tables with
complex structures, borderless cells, large blank spaces, empty or spanning
cells as well as distorted or even curved shapes on a more challenging
real-world in-house dataset.
| [{'version': 'v1', 'created': 'Tue, 21 Mar 2023 06:20:49 GMT'}] | 2023-03-22 | [array(['Wang', 'Jiawei', ''], dtype=object)
array(['Lin', 'Weihong', ''], dtype=object)
array(['Ma', 'Chixiang', ''], dtype=object)
array(['Li', 'Mingze', ''], dtype=object)
array(['Sun', 'Zheng', ''], dtype=object)
array(['Sun', 'Lei', ''], dtype=object)
array(['Huo', 'Qiang', ''], dtype=object)] |
19,540 | 1307.6708 | Tuan Tran | Tuan Tran and G\"unter M. Ziegler | Extremal edge polytopes | Final version; 16 pages, 3 figures. Published in The Electronic
Journal of Combinatorics | The Electronic Journal of Combinatorics 21(2) (2014), P2.57 | null | null | math.CO math.MG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The "edge polytope" of a finite graph G is the convex hull of the columns of
its vertex-edge incidence matrix. We study extremal problems for this class of
polytopes. For k =2, 3, 5 we determine the maximum number of vertices of
k-neighborly edge polytopes up to a sublinear term. We also construct a family
of edge polytopes with exponentially-many facets.
| [{'version': 'v1', 'created': 'Thu, 25 Jul 2013 11:51:34 GMT'}
{'version': 'v2', 'created': 'Fri, 27 Jun 2014 10:12:51 GMT'}] | 2014-06-30 | [array(['Tran', 'Tuan', ''], dtype=object)
array(['Ziegler', 'Günter M.', ''], dtype=object)] |
19,541 | 1803.00886 | Lantian Li Mr. | Lantian Li, Dong Wang, Yixiang Chen, Ying Shi, Zhiyuan Tang and Thomas
Fang Zheng | Deep factorization for speech signal | Accepted by ICASSP 2018. arXiv admin note: substantial text overlap
with arXiv:1706.01777 | null | null | null | eess.AS cs.CL cs.LG cs.SD | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Various informative factors mixed in speech signals, leading to great
difficulty when decoding any of the factors. An intuitive idea is to factorize
each speech frame into individual informative factors, though it turns out to
be highly difficult. Recently, we found that speaker traits, which were assumed
to be long-term distributional properties, are actually short-time patterns,
and can be learned by a carefully designed deep neural network (DNN). This
discovery motivated a cascade deep factorization (CDF) framework that will be
presented in this paper. The proposed framework infers speech factors in a
sequential way, where factors previously inferred are used as conditional
variables when inferring other factors. We will show that this approach can
effectively factorize speech signals, and using these factors, the original
speech spectrum can be recovered with a high accuracy. This factorization and
reconstruction approach provides potential values for many speech processing
tasks, e.g., speaker recognition and emotion recognition, as will be
demonstrated in the paper.
| [{'version': 'v1', 'created': 'Tue, 27 Feb 2018 12:45:16 GMT'}] | 2018-03-05 | [array(['Li', 'Lantian', ''], dtype=object)
array(['Wang', 'Dong', ''], dtype=object)
array(['Chen', 'Yixiang', ''], dtype=object)
array(['Shi', 'Ying', ''], dtype=object)
array(['Tang', 'Zhiyuan', ''], dtype=object)
array(['Zheng', 'Thomas Fang', ''], dtype=object)] |
19,542 | 1507.06327 | Andrea Markelz | Katherine A. Niessen and A.G. Markelz | Optimization of THz Microscopy Imaging | 2 pages 4 figures | null | null | null | cond-mat.mtrl-sci physics.ins-det | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | THz near field microscopy opens a new frontier in material science. High
spatial resolution requires the detection crystal to have uniform and
reproducible response. We present the THz near field spatial and temporal
response of ZnTe and GaP and examine possible properties that give rise to the
ZnTe degraded signal.
| [{'version': 'v1', 'created': 'Wed, 22 Jul 2015 20:13:02 GMT'}] | 2015-07-24 | [array(['Niessen', 'Katherine A.', ''], dtype=object)
array(['Markelz', 'A. G.', ''], dtype=object)] |
19,543 | 1301.4743 | Yusuke Namekawa | Y. Namekawa, S. Aoki, K.-I. Ishikawa, N. Ishizuka, K. Kanaya, Y.
Kuramashi, M. Okawa, Y. Taniguchi, A. Ukawa, N. Ukita, T. Yoshi\'e (PACS-CS
Collaboration) | Charmed baryons at the physical point in 2+1 flavor lattice QCD | 12 pages, 9 figures. arXiv admin note: substantial text overlap with
arXiv:1212.0073 | null | 10.1103/PhysRevD.87.094512 | null | hep-lat | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We investigate the charmed baryon mass spectrum using the relativistic heavy
quark action on 2+1 flavor PACS-CS configurations previously generated on $32^3
\times 64$ lattice. The dynamical up-down and strange quark masses are tuned to
their physical values, reweighted from those employed in the configuration
generation. At the physical point, the inverse lattice spacing determined from
the $\Omega$ baryon mass gives $a^{-1}=2.194(10)$ GeV, and thus the spatial
extent becomes $L = 32 a = 2.88(1)$ fm. Our results for the charmed baryon
masses are consistent with experimental values, except for the mass of
$\Xi_{cc}$, which has been measured by only one experimental group so far and
has not been confirmed yet by others. In addition, we report values of other
doubly and triply charmed baryon masses, which have never been measured
experimentally.
| [{'version': 'v1', 'created': 'Mon, 21 Jan 2013 03:32:43 GMT'}
{'version': 'v2', 'created': 'Thu, 24 Jan 2013 11:19:26 GMT'}] | 2013-05-29 | [array(['Namekawa', 'Y.', '', 'PACS-CS\n Collaboration'], dtype=object)
array(['Aoki', 'S.', '', 'PACS-CS\n Collaboration'], dtype=object)
array(['Ishikawa', 'K. -I.', '', 'PACS-CS\n Collaboration'], dtype=object)
array(['Ishizuka', 'N.', '', 'PACS-CS\n Collaboration'], dtype=object)
array(['Kanaya', 'K.', '', 'PACS-CS\n Collaboration'], dtype=object)
array(['Kuramashi', 'Y.', '', 'PACS-CS\n Collaboration'], dtype=object)
array(['Okawa', 'M.', '', 'PACS-CS\n Collaboration'], dtype=object)
array(['Taniguchi', 'Y.', '', 'PACS-CS\n Collaboration'], dtype=object)
array(['Ukawa', 'A.', '', 'PACS-CS\n Collaboration'], dtype=object)
array(['Ukita', 'N.', '', 'PACS-CS\n Collaboration'], dtype=object)
array(['Yoshié', 'T.', '', 'PACS-CS\n Collaboration'], dtype=object)] |
19,544 | 1803.04184 | Mario Abundo | Mario Abundo and Sara Furia | On the first-passage area of a L$\acute{\text{e}}$vy process | 18 pages, 9 figures | null | null | null | math.PR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Let be $X(t)= x - \mu t + \sigma B_t - N_t$ a L$\acute{\text{e}}$vy process
starting from $x >0,$ where $ \mu \ge 0, \ \sigma \ge 0, \ B_t$ is a standard
BM, and $N_t$ is a homogeneous Poisson process with intensity $ \theta >0,$
starting from zero. We study the joint distribution of the first-passage time
below zero, $\tau (x),$ and the first-passage area, $A(x),$ swept out by $X$
till the time $\tau (x).$ In particular, we establish differential-difference
equations with outer conditions for the Laplace transforms of $\tau(x)$ and
$A(x),$ and for their joint moments. In a special case $(\mu = \sigma =0),$ we
show an algorithm to find recursively the moments $E[\tau(x)^m A(x)^n],$ for
any integers $m$ and $n;$ moreover, we obtain the expected value of the time
average of $X$ till the time $\tau(x).$
| [{'version': 'v1', 'created': 'Mon, 12 Mar 2018 11:01:51 GMT'}] | 2018-03-13 | [array(['Abundo', 'Mario', ''], dtype=object)
array(['Furia', 'Sara', ''], dtype=object)] |
19,545 | 1710.04971 | Elif Tugce Ceran | Elif Tugce Ceran, Deniz Gunduz, and Andras Gyorgy | Average Age of Information with Hybrid ARQ under a Resource Constraint | null | null | null | null | cs.IT math.IT | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Scheduling of the transmission of status updates over an error-prone
communication channel is studied in order to minimize the long-term average age
of information (AoI) at the destination, under an average resource constraint
at the source node, which limits the average number of transmissions. After
each transmission, the source receives an instantaneous ACK/NACK feedback, and
decides on the next update, without a priori knowledge on the success of the
future transmissions. The optimal scheduling policy is studied under different
feedback mechanisms; in particular, standard automatic repeat request (ARQ) and
hybrid ARQ (HARQ) protocols are considered. Average-cost reinforcement learning
algorithms are proposed when the error probabilities for the HARQ system are
unknown.
| [{'version': 'v1', 'created': 'Sun, 1 Oct 2017 18:21:19 GMT'}
{'version': 'v2', 'created': 'Tue, 31 Jul 2018 10:52:48 GMT'}
{'version': 'v3', 'created': 'Wed, 5 Dec 2018 14:03:03 GMT'}] | 2018-12-06 | [array(['Ceran', 'Elif Tugce', ''], dtype=object)
array(['Gunduz', 'Deniz', ''], dtype=object)
array(['Gyorgy', 'Andras', ''], dtype=object)] |
19,546 | 2105.10296 | Bruno Laburthe Tolra | Andrea Litvinov, Pierre Bataille, Etienne Mar\'echal, Paolo Pedri,
Olivier Gorceix, Martin Robert-de-Saint-Vincent, Bruno Laburthe-Tolra | Measuring densities of cold atomic clouds smaller than the resolution
limit | 7 pages, 5 figures | Phys. Rev. A 104, 033309 (2021) | 10.1103/PhysRevA.104.033309 | null | cond-mat.quant-gas | http://creativecommons.org/licenses/by/4.0/ | We propose and demonstrate an experimental method to measure by absorption
imaging the size and local column density of a cloud of atoms, even when its
smallest dimension is smaller than the resolution of the imaging system. To do
this, we take advantage of the fact that, for a given total number of atoms, a
smaller and denser cloud scatters less photons when the gas is optically thick.
The method relies on making an ansatz on the cloud shape along the unresolved
dimension(s), and on providing an additional information such as the total
number of atoms. We demonstrate the method on \textit{in-situ} absorption
images of elongated 87Sr Fermi gases. We find significant non-linear
corrections to the estimated size and local density of the cloud compared to a
standard analysis. This allows us to recover an un-distorted longitudinal
density profile, and to measure transverse sizes as small as one fourth of our
imaging resolution. The ultimate limit of our method is the wavelength that is
used for imaging.
| [{'version': 'v1', 'created': 'Fri, 21 May 2021 12:00:19 GMT'}
{'version': 'v2', 'created': 'Mon, 27 Sep 2021 13:18:40 GMT'}] | 2021-09-28 | [array(['Litvinov', 'Andrea', ''], dtype=object)
array(['Bataille', 'Pierre', ''], dtype=object)
array(['Maréchal', 'Etienne', ''], dtype=object)
array(['Pedri', 'Paolo', ''], dtype=object)
array(['Gorceix', 'Olivier', ''], dtype=object)
array(['Robert-de-Saint-Vincent', 'Martin', ''], dtype=object)
array(['Laburthe-Tolra', 'Bruno', ''], dtype=object)] |
19,547 | 2304.12182 | Ion I. Cotaescu | Ion I. Cotaescu | Quantum theory of Dirac's free field | 50 pages, 2 figures, some typos are corrected | null | null | null | quant-ph hep-th | http://creativecommons.org/licenses/by/4.0/ | The Dirac theory of free massive fermions is reconstructed around the new
conserved spin operator and its associated position one proposed initially by
Pryce long time ago and re-defined recently by using suitable spectral
representations [I. I. Cot\u aescu, Eur. Phys. J. C (2022) 82:1073]. This
method is generalized here associating to any integral operator in
configuration representation a pair of integral operators acting on particle
and antiparticle wave spinors in momentum representation instead on the mode
spinors. It results thus an effective quantization procedure giving rise to a
coherent quantum theory in which the principal observables are one-particle
operators without oscillating therms as those producing zitterbewegung in the
traditional interpretation. In this approach the spin operator is conserved
while the position one, proposed initially by Pryce as mass-center operator,
becomes after quantization the dipole operator evolving linearly in time with a
conserved velocity. The rich algebra of observables including the isometry
generators and various position operators is carefully studied. The propagation
of one-particle wave-packets is considered for the first time in this framework
finding that these move uniformly spreading in time normally as any other
scalar or non-relativistic wave-packet.
| [{'version': 'v1', 'created': 'Fri, 21 Apr 2023 17:25:05 GMT'}
{'version': 'v2', 'created': 'Fri, 12 May 2023 19:18:00 GMT'}
{'version': 'v3', 'created': 'Sun, 4 Jun 2023 19:26:02 GMT'}] | 2023-06-06 | [array(['Cotaescu', 'Ion I.', ''], dtype=object)] |
19,548 | hep-ex/0603026 | Pamela Morehouse | D. Cronin-Hennessy, et al, CLEO Collaboration | Search for the non-D\barD Decay psi(3770) --> K_S^0 K_L^0 | 9 pages postscript,also available through
http://www.lns.cornell.edu/public/CLNS/2005/, Submitted to PRD | Phys.Rev.D74:012005,2006; Erratum-ibid.D75:119903,2007 | 10.1103/PhysRevD.74.012005 10.1103/PhysRevD.75.119903 | CLNS 05/1946, CLEO 05-32 | hep-ex | null | Using the current world's largest data sample of psi(3770) decays, we present
results of a search for the non-DDbar decay psi(3770) -> KsKl. We find no
signal, and obtain an upper limit of Sigma(psi(3770) -> KsKl) < 0.07 pb at 90%
confidence level (CL). Our result tests a theoretical prediction for the upper
bound on B(psi(3770) -> KsKl) based on a charmonia-mixing model.
| [{'version': 'v1', 'created': 'Mon, 13 Mar 2006 15:15:31 GMT'}] | 2014-11-17 | [array(['Cronin-Hennessy', 'D.', ''], dtype=object)
array(['Collaboration', 'CLEO', ''], dtype=object)] |
19,549 | 2001.03083 | Mat\'ias Pavez-Sign\'e | Pedro Ara\'ujo, Luiz Moreira, Mat\'ias Pavez-Sign\'e | Ramsey goodness of trees in random graphs | 30 pages, 3 figures | null | null | null | math.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | For a graph $G$, we write $G\rightarrow \big(K_{r+1},\mathcal{T}(n,D)\big)$
if every blue-red colouring of the edges of $G$ contains either a blue copy of
$K_{r+1}$, or a red copy of each tree with $n$ edges and maximum degree at most
$D$. In 1977, Chv\'atal proved that for any integers $r,n,D \ge 2$, $K_N
\rightarrow \big(K_{r+1},\mathcal{T}(n,D)\big)$ if and only if $N \ge rn+1$. We
prove a random analogue of Chv\'atal's theorem for bounded degree trees, that
is, we show that for each $r,D\ge 2$ there exist constants $C,C'>0$ such that
if $p \ge C{n}^{-2/(r+2)}$ and $N \geq rn + C'/p$, then \[G(N,p) \rightarrow
\big(K_{r+1},\mathcal{T}(n,D)\big)\] with high probability as $n\to \infty$.
The proof combines a stability argument with the embedding of trees in expander
graphs. Furthermore, the proof of the stability result is based on a sparse
random analogue of the Erd\H{o}s--S\'os conjecture for trees with linear size
and bounded maximum degree, which may be of independent interest.
| [{'version': 'v1', 'created': 'Thu, 9 Jan 2020 16:22:23 GMT'}
{'version': 'v2', 'created': 'Mon, 5 Apr 2021 17:32:58 GMT'}] | 2021-04-06 | [array(['Araújo', 'Pedro', ''], dtype=object)
array(['Moreira', 'Luiz', ''], dtype=object)
array(['Pavez-Signé', 'Matías', ''], dtype=object)] |
19,550 | 2204.07610 | Odd Erik Gundersen | Odd Erik Gundersen, Kevin Coakley, Christine Kirkpatrick and Yolanda
Gil | Sources of Irreproducibility in Machine Learning: A Review | null | null | null | null | cs.LG cs.AI | http://creativecommons.org/licenses/by/4.0/ | Background: Many published machine learning studies are irreproducible.
Issues with methodology and not properly accounting for variation introduced by
the algorithm themselves or their implementations are attributed as the main
contributors to the irreproducibility.Problem: There exist no theoretical
framework that relates experiment design choices to potential effects on the
conclusions. Without such a framework, it is much harder for practitioners and
researchers to evaluate experiment results and describe the limitations of
experiments. The lack of such a framework also makes it harder for independent
researchers to systematically attribute the causes of failed reproducibility
experiments. Objective: The objective of this paper is to develop a framework
that enable applied data science practitioners and researchers to understand
which experiment design choices can lead to false findings and how and by this
help in analyzing the conclusions of reproducibility experiments. Method: We
have compiled an extensive list of factors reported in the literature that can
lead to machine learning studies being irreproducible. These factors are
organized and categorized in a reproducibility framework motivated by the
stages of the scientific method. The factors are analyzed for how they can
affect the conclusions drawn from experiments. A model comparison study is used
as an example. Conclusion: We provide a framework that describes machine
learning methodology from experimental design decisions to the conclusions
inferred from them.
| [{'version': 'v1', 'created': 'Fri, 15 Apr 2022 18:26:03 GMT'}
{'version': 'v2', 'created': 'Fri, 14 Apr 2023 17:31:27 GMT'}] | 2023-04-17 | [array(['Gundersen', 'Odd Erik', ''], dtype=object)
array(['Coakley', 'Kevin', ''], dtype=object)
array(['Kirkpatrick', 'Christine', ''], dtype=object)
array(['Gil', 'Yolanda', ''], dtype=object)] |
19,551 | hep-th/0312192 | Spenta Wadia | Gautam Mandal and Spenta R. Wadia | Rolling tachyon solution of two-dimensional string theory | 19 pages, 2 figures, minor changes in text and additional references,
correction of decay time (version to appear in JHEP.) | JHEP 0405:038,2004 | 10.1088/1126-6708/2004/05/038 | CERN-TH/2003-302, TIFR/TH/03-27 | hep-th | null | We consider a classical (string) field theory of $c=1$ matrix model which was
developed earlier in hep-th/9207011 and subsequent papers. This is a
noncommutative field theory where the noncommutativity parameter is the string
coupling $g_s$. We construct a classical solution of this field theory and show
that it describes the complete time history of the recently found rolling
tachyon on an unstable D0 brane.
| [{'version': 'v1', 'created': 'Tue, 16 Dec 2003 17:08:22 GMT'}
{'version': 'v2', 'created': 'Thu, 22 Jan 2004 11:59:26 GMT'}
{'version': 'v3', 'created': 'Mon, 17 May 2004 17:35:59 GMT'}] | 2014-11-18 | [array(['Mandal', 'Gautam', ''], dtype=object)
array(['Wadia', 'Spenta R.', ''], dtype=object)] |
19,552 | 2104.12168 | Ngoc Khue Tran | Arturo Kohatsu-Higa, Eulalia Nualart and Ngoc Khue Tran | Density estimates for jump diffusion processes | null | null | null | null | math.PR | http://creativecommons.org/licenses/by-nc-nd/4.0/ | We consider a real-valued diffusion process with a linear jump term driven by
a Poisson point process and we assume that the jump amplitudes have a centered
density with finite moments. We show upper and lower estimates for the density
of the solution in the case that the jump amplitudes follow a Gaussian or
Laplacian law. The proof of the lower bound uses a general expression for the
density of the solution in terms of the convolution of the density of the
continuous part and the jump amplitude density. The upper bound uses an upper
tail estimate in terms of the jump amplitude distribution and techniques of the
Malliavin calculus in order to bound the density by the tails of the solution.
We also extend the lower bounds to the multidimensional case.
| [{'version': 'v1', 'created': 'Sun, 25 Apr 2021 14:20:18 GMT'}] | 2021-04-27 | [array(['Kohatsu-Higa', 'Arturo', ''], dtype=object)
array(['Nualart', 'Eulalia', ''], dtype=object)
array(['Tran', 'Ngoc Khue', ''], dtype=object)] |
19,553 | 2110.02800 | Vikesh Siddhu | Vikesh Siddhu, Avhishek Chatterjee, Krishna Jagannathan, Prabha
Mandayam, Sridhar Tayur | Unital Qubit Queue-channels: Classical Capacity and Product Decoding | 25 pages with 3 Figures. Merges and supersedes our prior submissions
arXiv:2107.13486 and arXiv:2110.02800 | null | null | null | quant-ph cs.IT math.IT | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Quantum queue-channels arise naturally in the context of buffering in quantum
networks, wherein the noise suffered by the quantum states depends on the time
spent waiting in the buffer. It has been shown that the upper-bound on the
classical capacity of an additive queue-channel has a simple expression, and is
achievable for the erasure and depolarizing channels [IEEE JSAIT,
1(2):432-444]. In this paper, we characterise the classical capacity for the
class of unital qubit queue-channels, and show that a simple product
(non-entangled) decoding strategy is capacity-achieving. As an intermediate
result, we derive an explicit capacity achieving product decoding strategy for
any i.i.d. unital qubit channel, which could be of independent interest. As an
important special case, we also derive the capacity and optimal decoding
strategies for a symmetric generalized amplitude damping (GAD) queue-channel.
Our results provide useful insights towards designing practical quantum
communication networks, and highlight the need to explicitly model the impact
of buffering.
| [{'version': 'v1', 'created': 'Wed, 6 Oct 2021 14:20:00 GMT'}
{'version': 'v2', 'created': 'Wed, 26 Oct 2022 15:19:51 GMT'}] | 2022-10-27 | [array(['Siddhu', 'Vikesh', ''], dtype=object)
array(['Chatterjee', 'Avhishek', ''], dtype=object)
array(['Jagannathan', 'Krishna', ''], dtype=object)
array(['Mandayam', 'Prabha', ''], dtype=object)
array(['Tayur', 'Sridhar', ''], dtype=object)] |
19,554 | 1909.02242 | Marta Spinelli | Marta Spinelli, Anna Zoldan, Gabriella De Lucia, Lizhi Xie, Matteo
Viel | The atomic Hydrogen content of the post-reionization Universe | 21 pages, 20 figures, comments welcome | null | 10.1093/mnras/staa604 | null | astro-ph.CO astro-ph.GA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a comprehensive analysis of atomic hydrogen (HI) properties using
a semi-analytical model of galaxy formation and N-body simulations covering a
large cosmological volume at high resolution. We examine the HI mass function
and the HI density, characterizing both their redshift evolution and their
dependence on hosting halo mass. We analyze the HI content of dark matter
haloes in the local Universe and up to redshift $z=5$, discussing the
contribution of different galaxy properties. We find that different assembly
history plays a crucial role in the scatter of this relation. We propose new
fitting functions useful for constructing mock HI maps with HOD techniques. We
investigate the HI clustering properties relevant for future $21$~cm Intensity
Mapping (IM) experiments, including the HI bias and the shot noise level. The
HI bias increases with redshift and it is roughly flat on the largest scales
probed. The scale dependency is found at progressively larger scales with
increasing redshift, apart from a dip feature at $z=0$. The shot-noise values
are consistent with the ones inferred by independent studies, confirming that
shot-noise will not be a limiting factor for IM experiments. We detail the
contribution from various galaxy properties on the HI power spectrum and their
relation to the halo bias. We find that HI poor satellite galaxies play an
important role at the scales of the 1-halo term. Finally, we present the
$21$~cm signal in redshift space, a fundamental prediction to be tested against
data from future radio telescopes such as SKA.
| [{'version': 'v1', 'created': 'Thu, 5 Sep 2019 07:20:59 GMT'}] | 2020-03-11 | [array(['Spinelli', 'Marta', ''], dtype=object)
array(['Zoldan', 'Anna', ''], dtype=object)
array(['De Lucia', 'Gabriella', ''], dtype=object)
array(['Xie', 'Lizhi', ''], dtype=object)
array(['Viel', 'Matteo', ''], dtype=object)] |
19,555 | 1906.03543 | Jacob Schreiber | Jacob Schreiber and Jeffrey Bilmes and William Stafford Noble | apricot: Submodular selection for data summarization in Python | null | null | null | null | cs.LG stat.ML | http://creativecommons.org/licenses/by/4.0/ | We present apricot, an open source Python package for selecting
representative subsets from large data sets using submodular optimization. The
package implements an efficient greedy selection algorithm that offers strong
theoretical guarantees on the quality of the selected set. Two submodular set
functions are implemented in apricot: facility location, which is broadly
applicable but requires memory quadratic in the number of examples in the data
set, and a feature-based function that is less broadly applicable but can scale
to millions of examples. Apricot is extremely efficient, using both algorithmic
speedups such as the lazy greedy algorithm and code optimizers such as numba.
We demonstrate the use of subset selection by training machine learning models
to comparable accuracy using either the full data set or a representative
subset thereof. This paper presents an explanation of submodular selection, an
overview of the features in apricot, and an application to several data sets.
The code and tutorial Jupyter notebooks are available at
https://github.com/jmschrei/apricot
| [{'version': 'v1', 'created': 'Sat, 8 Jun 2019 23:53:57 GMT'}] | 2019-06-11 | [array(['Schreiber', 'Jacob', ''], dtype=object)
array(['Bilmes', 'Jeffrey', ''], dtype=object)
array(['Noble', 'William Stafford', ''], dtype=object)] |
19,556 | 2101.04614 | Jan Plato\v{s} | Michal Bravansky and Jan Platos | M\v{e}j P\v{r}ehled / Be informed | null | null | null | null | cs.SI | http://creativecommons.org/licenses/by-sa/4.0/ | The amount of information available to the general public is enormous, and it
is challenging to extract meaningful and reliable content. The availability of
news sources and their trustability are the biggest problems for selecting the
proper authority. Moreover, news providers' inability to publish good news on
social media creates a gap for young people to access trustworthy information.
This article describes an automated system that can extract the essential news
and publish them in a different form on social media networks.
| [{'version': 'v1', 'created': 'Wed, 30 Dec 2020 18:12:37 GMT'}] | 2021-01-13 | [array(['Bravansky', 'Michal', ''], dtype=object)
array(['Platos', 'Jan', ''], dtype=object)] |
19,557 | 1104.4886 | Teiko Heinosaari | Erkka Haapasalo and Teiko Heinosaari and Juha-Pekka Pellonp\"a\"a | Quantum measurements on finite dimensional systems: relabeling and
mixing | one new section in v2 | Quantum Inf. Process. (2012) 11:1751--1763 | 10.1007/s11128-011-0330-2 | null | quant-ph | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Concentrating on finite dimensional systems, we show that one can limit to
extremal rank-1 POVMs if two simple procedures of mixing and relabeling are
permitted. We demonstrate that any finite outcome POVM can be obtained from
extremal rank-1 POVMs with these two procedures. In particular, extremal POVMs
with higher rank are just relabelings of extremal rank-1 POVMs and their
structure is therefore clarified.
| [{'version': 'v1', 'created': 'Tue, 26 Apr 2011 10:44:58 GMT'}
{'version': 'v2', 'created': 'Thu, 14 Jul 2011 10:35:59 GMT'}] | 2012-10-23 | [array(['Haapasalo', 'Erkka', ''], dtype=object)
array(['Heinosaari', 'Teiko', ''], dtype=object)
array(['Pellonpää', 'Juha-Pekka', ''], dtype=object)] |
19,558 | 2009.07814 | Clara Verg\`es | Clara Verg\`es, Josquin Errard, and Radek Stompor | Framework for analysis of next generation, polarised CMB data sets in
the presence of galactic foregrounds and systematic effects | 24 pages, 10 figures | Phys. Rev. D 103, 063507 (2021) | 10.1103/PhysRevD.103.063507 | null | astro-ph.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Reaching the sufficient sensitivity to detect primordial B-modes requires
modern CMB polarisation experiments to rely on new technologies, necessary for
the deployment of arrays thousands of detectors with a broad frequency coverage
and operating them for extended periods of time. This increased complexity of
experimental design unavoidably introduces new instrumental and systematic
effects, which may impact performance of the new instruments. In this work we
extend the standard data analysis pipeline by including a (parametric) model of
instrumental effects directly in the data model. We then correct for them in
the analysis, accounting for the additional uncertainty in the final results.
We embed these techniques within a general, end-to-end formalism for estimating
the impact of the instrument and foreground models on constraints on the
amplitude of the primordial B-mode signal. We focus on the parametric component
separation approach which we generalize to allow for simultaneous estimation of
instrumental and foreground parameters.
We demonstrate the framework by studying the effects induced by an achromatic
half-wave plate (HWP), which lead to a frequency-dependent variation of the
instrument polarisation angle, and experimental bandpasses which define
observational frequency bands. We assume a typical Stage-3 CMB polarisation
experiment, and show that maps recovered from raw data collected at each
frequency band will unavoidably be linear mixtures of the Q and U Stokes
parameters. We then derive a new generalized data model appropriate for such
cases, and extend the component separation approach to account for it. We find
that some of the instrumental parameters, in particularly those describing the
HWP can be successfully constrained by the data themselves without need for
external information, while others, like bandpasses, need to be known with good
precision in advance.
| [{'version': 'v1', 'created': 'Wed, 16 Sep 2020 17:13:43 GMT'}] | 2021-03-17 | [array(['Vergès', 'Clara', ''], dtype=object)
array(['Errard', 'Josquin', ''], dtype=object)
array(['Stompor', 'Radek', ''], dtype=object)] |
19,559 | 2301.08395 | Joaqu\'in Moraga | Yoshinori Gongyo and Joaqu\'in Moraga | Generalized complexity of surfaces | 27 pages | null | null | null | math.AG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this article, we introduce the generalized complexity of a generalized
Calabi--Yau pair $(X,B,\textbf{M})$. This invariant compares the dimension of
$X$ and Picard rank of $X$ with the sum of the coefficients of $B$ and
$\textbf{M}$. It generalizes the complexity introduced by Shokurov. We show
that a generalized log Calabi-Yau pair $(X,B,\textbf{M})$ of dimension $2$ with
generalized complexity $0$ satisfies that $X$ is toric. This generalizes a
result due to Brown, McKernan, Svaldi, and Zhong in the case of surfaces.
Furthermore, we show that a generalized klt log Calabi-Yau surface
$(X,\textbf{M})$ with generalized complexity $0$ satisfies that $X\simeq
\mathbb{P}^2$ or $X\simeq \mathbb{P}^1\times \mathbb{P}^1$. Thus, this
invariant interpolates between the characterization of toric varieties and the
Kobayashi-Ochiai Theorem. As an application, we show that $3$-fold
singularities with generalized complexity $0$ are toric. Furthermore, we show a
local version of Kobayashi-Ochiai Theorem in dimension $3$.
| [{'version': 'v1', 'created': 'Fri, 20 Jan 2023 02:11:37 GMT'}] | 2023-01-23 | [array(['Gongyo', 'Yoshinori', ''], dtype=object)
array(['Moraga', 'Joaquín', ''], dtype=object)] |
19,560 | math/0406386 | Igor Urbiha | Dragutin Svrtan, Igor Urbiha | Atiyah-Sutcliffe Conjectures for Almost Collinear Configurations and
Some New Conjectures for Symmetric Functions | 23 pages | null | null | null | math.AG | null | In 2001 Sir M. F. Atiyah formulated a conjecture (C1) and later with P.
Sutcliffe two stronger conjectures (C2) and (C3). These conjectures, inspired
by physics (spin-statistics theorem of quantum mechanics), are geometrically
defined for any configuration of points in the Euclidean three space. The
conjecture (C1) is proved for n=3,4 and for general n only for some special
configurations (M. F. Atiyah, M. Eastwood and P. Norbury, D. Djokovic).
In this paper we shall explain some new conjectures for symmetric functions
which imply (C2) and (C3) for almost collinear configurations. Computations up
to n=6 are performed with a help of Maple and J. Stembridge's package SF for
symmetric functions. For n=4 the conjectures (C2) and (C3) we have also
verified for some infinite families of tetrahedra. This is a joint work with I.
Urbiha.
Finally we mention that by minimizing a geometrically defined energy,
figuring in these conjectures, one gets a connection to some complicated
physical theories, such as Skyrmions and Fullerenes.
| [{'version': 'v1', 'created': 'Sat, 19 Jun 2004 09:44:50 GMT'}] | 2007-05-23 | [array(['Svrtan', 'Dragutin', ''], dtype=object)
array(['Urbiha', 'Igor', ''], dtype=object)] |
19,561 | 1608.05793 | Huseyin Inan | Huseyin A. Inan, Dor Shaviv, Ayfer Ozgur | Capacity of the Energy Harvesting Gaussian MAC | null | null | null | null | cs.IT math.IT | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider an energy harvesting multiple access channel (MAC) where the
transmitters are powered by an exogenous stochastic energy harvesting process
and equipped with finite batteries. We characterize the capacity region of this
channel as n-letter mutual information rate and develop inner and outer bounds
that differ by a constant gap. An interesting conclusion that emerges from our
results is that the sum-capacity approaches that of a standard AWGN MAC (with
only an average constraint on the transmitted power), as the number of users in
the MAC becomes large.
| [{'version': 'v1', 'created': 'Sat, 20 Aug 2016 07:10:28 GMT'}] | 2016-08-23 | [array(['Inan', 'Huseyin A.', ''], dtype=object)
array(['Shaviv', 'Dor', ''], dtype=object)
array(['Ozgur', 'Ayfer', ''], dtype=object)] |
19,562 | 1809.05009 | Teun Janssen | T. Janssen, C. Swennenhuis, A. Bitar, T. Bosman, D. Gijswijt, L. van
Iersel, S. Dauz\'ere-P\'er\`es, C. Yugma | Parallel Machine Scheduling with a Single Resource per Job | null | null | null | null | cs.DM cs.CC math.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We study the problem of scheduling jobs on parallel machines minimizing the
total completion time, with each job using exactly one resource. First, we
derive fundamental properties of the problem and show that the problem is
polynomially solvable if $p_j = 1$. Then we look at a variant of the shortest
processing time rule as an approximation algorithm for the problem and show
that it gives at least a $(2-\frac{1}{m})$-approximation. Subsequently, we show
that, although the complexity of the problem remains open, three related
problems are $\mathcal{NP}$-hard. In the first problem, every resource also has
a subset of machines on which it can be used. In the second problem, once a
resource has been used on a machine it cannot be used on any other machine,
hence all jobs using the same resource need to be scheduled on the same
machine. In the third problem, every job needs exactly two resources instead of
just one.
| [{'version': 'v1', 'created': 'Thu, 13 Sep 2018 15:09:27 GMT'}
{'version': 'v2', 'created': 'Thu, 18 Oct 2018 11:15:23 GMT'}
{'version': 'v3', 'created': 'Fri, 16 Nov 2018 11:36:28 GMT'}] | 2018-11-19 | [array(['Janssen', 'T.', ''], dtype=object)
array(['Swennenhuis', 'C.', ''], dtype=object)
array(['Bitar', 'A.', ''], dtype=object)
array(['Bosman', 'T.', ''], dtype=object)
array(['Gijswijt', 'D.', ''], dtype=object)
array(['van Iersel', 'L.', ''], dtype=object)
array(['Dauzére-Pérès', 'S.', ''], dtype=object)
array(['Yugma', 'C.', ''], dtype=object)] |
19,563 | 1608.06249 | Matthias W\"ahlisch | Marcin Nawrocki, Matthias W\"ahlisch, Thomas C. Schmidt, Christian
Keil, Jochen Sch\"onfelder | A Survey on Honeypot Software and Data Analysis | null | null | null | null | cs.CR cs.NI | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this survey, we give an extensive overview on honeypots. This includes not
only honeypot software but also methodologies to analyse honeypot data.
| [{'version': 'v1', 'created': 'Mon, 22 Aug 2016 18:09:27 GMT'}] | 2016-08-23 | [array(['Nawrocki', 'Marcin', ''], dtype=object)
array(['Wählisch', 'Matthias', ''], dtype=object)
array(['Schmidt', 'Thomas C.', ''], dtype=object)
array(['Keil', 'Christian', ''], dtype=object)
array(['Schönfelder', 'Jochen', ''], dtype=object)] |
19,564 | astro-ph/0507516 | Paolo Maestro | The CREAM Collaboration (P.S. Marrocchesi on behalf of the
Collaboration) | Reconstruction of showers in the calorimeter during the first flight of
the CREAM balloon experiment | 4 pages, 4 figures. To be published in the Proceedings of 29th
International Cosmic Ray Conference (ICRC 2005), Pune, India, August 3-10,
2005 | null | null | null | astro-ph | null | The Cosmic Ray Energetics And Mass (CREAM) balloon-borne experiment was first
flown from Antarctica in December 2004. The instrument includes a
tungsten/Sci-Fi calorimeter preceded by a graphite target (~0.5 interaction
length and ~1 radiation length) where a hadronic shower is initiated by the
inelastic interaction of the incoming nucleus. The fine granularity (1 cm) of
the 20 radiation length calorimeter allows the imaging of the narrow
electromagnetic core of the shower and the determination of the direction of
the incident particle. Preliminary results, from the flight data, on the shower
reconstruction capability of the instrument and on the observed shower
properties are presented.
| [{'version': 'v1', 'created': 'Thu, 21 Jul 2005 15:18:21 GMT'}] | 2012-08-27 | [array(['The CREAM Collaboration', '', ''], dtype=object)] |
19,565 | 2107.01327 | Huy Hieu Pham | Hoang C. Nguyen and Tung T. Le and Hieu H. Pham and Ha Q. Nguyen | VinDr-RibCXR: A Benchmark Dataset for Automatic Segmentation and
Labeling of Individual Ribs on Chest X-rays | This is a preprint of our paper, which was accepted for publication
by Medical Imaging with Deep Learning (MIDL 2021) | null | null | null | eess.IV cs.CV | http://creativecommons.org/licenses/by/4.0/ | We introduce a new benchmark dataset, namely VinDr-RibCXR, for automatic
segmentation and labeling of individual ribs from chest X-ray (CXR) scans. The
VinDr-RibCXR contains 245 CXRs with corresponding ground truth annotations
provided by human experts. A set of state-of-the-art segmentation models are
trained on 196 images from the VinDr-RibCXR to segment and label 20 individual
ribs. Our best performing model obtains a Dice score of 0.834 (95% CI,
0.810--0.853) on an independent test set of 49 images. Our study, therefore,
serves as a proof of concept and baseline performance for future research.
| [{'version': 'v1', 'created': 'Sat, 3 Jul 2021 02:36:09 GMT'}] | 2021-07-06 | [array(['Nguyen', 'Hoang C.', ''], dtype=object)
array(['Le', 'Tung T.', ''], dtype=object)
array(['Pham', 'Hieu H.', ''], dtype=object)
array(['Nguyen', 'Ha Q.', ''], dtype=object)] |
19,566 | 1011.1685 | Mariusz Mirek | Dariusz Buraczewski, Ewa Damek, Mariusz Mirek | Asymptotics of stationary solutions of multivariate stochastic
recursions with heavy tailed inputs and related limit theorems | 23 pages, 0 figures. Accepted for publication in Stochastic Processes
and their Applications | null | null | null | math.PR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Let $\Phi_n$ be an i.i.d. sequence of Lipschitz mappings of $\R^d$. We study
the Markov chain $\{X_n^x\}_{n=0}^\infty$ on $\R^d$ defined by the recursion
$X_n^x = \Phi_n(X^x_{n-1})$, $n\in\N$, $X_0^x=x\in\R^d$. We assume that
$\Phi_n(x)=\Phi(A_n x,B_n(x))$ for a fixed continuous function $\Phi:\R^d\times
\R^d\to\R^d$, commuting with dilations and i.i.d random pairs $(A_n,B_n)$,
where $A_n\in {End}(\R^d)$ and $B_n$ is a continuous mapping of $\R^d$.
Moreover, $B_n$ is $\alpha$-regularly varying and $A_n$ has a faster decay at
infinity than $B_n$. We prove that the stationary measure $\nu$ of the Markov
chain $\{X_n^x\}$ is $\alpha$-regularly varying. Using this result we show
that, if $\alpha<2$, the partial sums $S_n^x=\sum_{k=1}^n X_k^x$, appropriately
normalized, converge to an $\alpha$-stable random variable. In particular, we
obtain new results concerning the random coefficient autoregressive process
$X_n = A_n X_{n-1}+B_n$.
| [{'version': 'v1', 'created': 'Sun, 7 Nov 2010 23:02:57 GMT'}
{'version': 'v2', 'created': 'Wed, 19 Oct 2011 19:58:41 GMT'}] | 2011-10-20 | [array(['Buraczewski', 'Dariusz', ''], dtype=object)
array(['Damek', 'Ewa', ''], dtype=object)
array(['Mirek', 'Mariusz', ''], dtype=object)] |
19,567 | 1208.2315 | Ko-Wei Lih | Lianzhu Zhang, Weifan Wang, Ko-Wei Lih | An improved upper bound on the adjacent vertex distinguishing chromatic
index of a graph | null | null | null | null | math.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | An adjacent vertex distinguishing coloring of a graph G is a proper edge
coloring of G such that any pair of adjacent vertices are incident with
distinct sets of colors. The minimum number of colors needed for an adjacent
vertex distinguishing coloring of G is denoted by $\chi'_a(G)$. In this paper,
we prove that $\chi_a'(G)$ <= 5($\Delta+2$)/2 for any graph G having maximum
degree $\Delta$ and no isolated edges. This improves a result in [S. Akbari, H.
Bidkhori, N. Nosrati, r-Strong edge colorings of graphs, Discrete Math. 306
(2006), 3005-3010], which states that $\chi_a'(G)$ <= 3$\Delta$ for any graph G
without isolated edges.
| [{'version': 'v1', 'created': 'Sat, 11 Aug 2012 07:10:07 GMT'}] | 2012-08-14 | [array(['Zhang', 'Lianzhu', ''], dtype=object)
array(['Wang', 'Weifan', ''], dtype=object)
array(['Lih', 'Ko-Wei', ''], dtype=object)] |
19,568 | 2109.02342 | Seung Su Yoon | Seung Su Yoon, Elisabeth Preuhs, Michaela Schmidt, Christoph Forman,
Teodora Chitiboi, Puneet Sharma, Juliano Lara Fernandes, Christoph Tillmanns,
Jens Wetzl, Andreas Maier | Automated Cardiac Resting Phase Detection Targeted on the Right Coronary
Artery | Accepted for publication at the Journal of Machine Learning for
Biomedical Imaging (MELBA) https://melba-journal.org/2023:001 | Machine.Learning.for.Biomedical.Imaging. 2 (2023) | 10.59275/j.melba.2023-afe2 | null | eess.IV cs.CV physics.med-ph | http://creativecommons.org/licenses/by/4.0/ | Static cardiac imaging such as late gadolinium enhancement, mapping, or 3-D
coronary angiography require prior information, e.g., the phase during a
cardiac cycle with least motion, called resting phase (RP). The purpose of this
work is to propose a fully automated framework that allows the detection of the
right coronary artery (RCA) RP within CINE series. The proposed prototype
system consists of three main steps. First, the localization of the regions of
interest (ROI) is performed. Second, the cropped ROI series are taken for
tracking motions over all time points. Third, the output motion values are used
to classify RPs. In this work, we focused on the detection of the area with the
outer edge of the cross-section of the RCA as our target. The proposed
framework was evaluated on 102 clinically acquired dataset at 1.5T and 3T. The
automatically classified RPs were compared with the reference RPs annotated
manually by a expert for testing the robustness and feasibility of the
framework. The predicted RCA RPs showed high agreement with the experts
annotated RPs with 92.7% accuracy, 90.5% sensitivity and 95.0% specificity for
the unseen study dataset. The mean absolute difference of the start and end RP
was 13.6 $\pm$ 18.6 ms for the validation study dataset (n=102). In this work,
automated RP detection has been introduced by the proposed framework and
demonstrated feasibility, robustness, and applicability for static imaging
acquisitions.
| [{'version': 'v1', 'created': 'Mon, 6 Sep 2021 10:29:52 GMT'}
{'version': 'v2', 'created': 'Wed, 1 Feb 2023 00:15:36 GMT'}] | 2023-06-29 | [array(['Yoon', 'Seung Su', ''], dtype=object)
array(['Preuhs', 'Elisabeth', ''], dtype=object)
array(['Schmidt', 'Michaela', ''], dtype=object)
array(['Forman', 'Christoph', ''], dtype=object)
array(['Chitiboi', 'Teodora', ''], dtype=object)
array(['Sharma', 'Puneet', ''], dtype=object)
array(['Fernandes', 'Juliano Lara', ''], dtype=object)
array(['Tillmanns', 'Christoph', ''], dtype=object)
array(['Wetzl', 'Jens', ''], dtype=object)
array(['Maier', 'Andreas', ''], dtype=object)] |
19,569 | nucl-th/9910078 | Mikhail Zverev | M.Baldo, U.Lombardo, E.Saperstein, M.Zverev | A simple model for the microscopic effective pairing interaction | LaTeX, 8 pages, 6 ps-figures | Phys.Lett. B477 (2000) 410-415 | 10.1016/S0370-2693(00)00045-9 | Preprint INFNCT-3-99 | nucl-th | null | The microscopic effective pairing interaction in the $^1S_0$-channel is
investigated for two different values of the chemical potential $\mu$ starting
from the separable form of the Paris NN-potential. It is shown that, within a
high accuracy, this effective interaction can be approximated by the off-shell
free T-matrix taken at the negative energy $E=2\mu$.
| [{'version': 'v1', 'created': 'Sun, 31 Oct 1999 22:15:11 GMT'}] | 2009-10-31 | [array(['Baldo', 'M.', ''], dtype=object)
array(['Lombardo', 'U.', ''], dtype=object)
array(['Saperstein', 'E.', ''], dtype=object)
array(['Zverev', 'M.', ''], dtype=object)] |
19,570 | 1409.8583 | Tiham\'er A. Kocsis | Tiham\'er A. Kocsis and Adri\'an N\'emeth | Optimal second order diagonally implicit SSP Runge--Kutta methods | null | null | null | null | math.NA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Optimal Strong Stability Preserving (SSP) Runge--Kutta methods has been
widely investegated in the last decade and many open conjectures have been
formulated. The iterated implicit midpoint rule has been observed numerically
optimal in large classes of second order methods, and was proven to be optimal
for some small cases, but no general proof was known so far to show its
optimality. In this paper we show a new approach to analytically investigate
this problem and determine the unique optimal methods in the class of second
order diagonally implicit Runge--Kutta methods.
| [{'version': 'v1', 'created': 'Tue, 30 Sep 2014 15:11:37 GMT'}] | 2014-10-01 | [array(['Kocsis', 'Tihamér A.', ''], dtype=object)
array(['Németh', 'Adrián', ''], dtype=object)] |
19,571 | 1304.0242 | Vikram Kamat | Vikram Kamat | On k-wise intersecting families of vertex sets in perfect matchings | 6 pages. arXiv admin note: substantial text overlap with
arXiv:1009.3973 | null | null | null | math.CO | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider the following generalization of the seminal Erd\H{o}s-Ko-Rado
theorem, due to Frankl. For k>= 2, let F be a k-wise intersecting family of
r-subsets of an n element set X, i.e. any k sets in F have a nonempty
intersection. If r<= (k-1/k)n, then |F|<={n-1 \choose r-1}. We extend Frankl's
theorem in a graph-theoretic direction. For a graph G, and r>=1, let P^r(G) be
the family of all r-subsets of the vertex set of G such that every r-subset is
either an independent set or contains a maximum independent set. We will
consider k-wise intersecting subfamilies of this family for the graph M_n,
where M_n is the perfect matching on 2n vertices, and prove an analog of
Frankl's theorem. This result can also be considered as an extension of a
theorem of Bollob\'as and Leader for intersecting families of independent
vertex sets in M_n.
| [{'version': 'v1', 'created': 'Sun, 31 Mar 2013 18:41:41 GMT'}] | 2013-04-02 | [array(['Kamat', 'Vikram', ''], dtype=object)] |
19,572 | 1310.3651 | Valentine Wakelam | Marcelino Agundez and Valentine Wakelam | Chemistry of Dark Clouds: Databases, Networks, and Models | 61 pages, to be published in Chemical Reviews. This version of the
paper may be slightly different from the published one since many
modifications have done by the language editor | null | 10.1021/cr4001176 | null | astro-ph.GA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Chemical models have been developed over the years by astrophysicists to
study the pro- cesses at play in the various environments of the interstellar
medium (ISM) that define the chemical composition of the gas and the dust.
These qualitative aspects of the model predictions have been improved from a
chemical point of view thanks to many recent developments of the experimental
technics and theoretical methods that aim at studying the individual reactions
in conditions as close to the ISM conditions as possible and characterize the
rate constants of their efficiency. These models have also been more and more
associated with dynamical evolution of the ISM physical conditions (for star
forming regions for instance) since the chemical composition is far from
steady-state in such regions. In this paper, we try to assess the state of the
art concerning the chemical modeling of dark clouds, the initial step for the
formation of stars and disks.
| [{'version': 'v1', 'created': 'Mon, 14 Oct 2013 12:31:11 GMT'}] | 2013-10-15 | [array(['Agundez', 'Marcelino', ''], dtype=object)
array(['Wakelam', 'Valentine', ''], dtype=object)] |
19,573 | 1907.04579 | Shan Chang | Shan Chang | Stability in graded rings associated with commutative augmented rings | null | null | null | null | math.AC math.RA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Let $A$ be a commutative augmented ring and $I$ be its augmentation ideal.
This paper shows that the sequence $\{I^n/I^{n+1}\}$ becomes stationary up to
isomorphism. The result yields stability in the associated graded ring of $A$
along $I$.
| [{'version': 'v1', 'created': 'Wed, 10 Jul 2019 08:58:25 GMT'}
{'version': 'v2', 'created': 'Sun, 29 Dec 2019 11:42:43 GMT'}] | 2020-01-01 | [array(['Chang', 'Shan', ''], dtype=object)] |
19,574 | 1505.00433 | Sun Ho Kim | Sun Ho Kim | Unique tracial state on the labeled graph $C^*$-algebra associated to
Thue--Morse sequence | 17 pages. [V2]: Section 5(K-group computation), Section
6(representation), and one reference have been added. Minor typos have been
corrected. To appear in International Journal of Mathematics | null | null | null | math.OA | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We give a concrete formula for the unique faithful trace on the finite simple
non-AF labeled graph $C^*$-algebra $C^*(E_{\mathbb{Z}}, \mathcal{L},
\overline{\mathcal{E}}_{\mathbb{Z}})$ associated to the Thue--Morse sequence
$(E_{\mathbb{Z}}, \mathcal{L})$. Our result provides an alternative proof of
the existence of a labeled graph $C^*$-algebra that is not Morita equivalent to
any graph $C^*$-algebras. Furthermore, we compute the $K$-groups of
$C^*(E_{\mathbb{Z}}, \mathcal{L}, \overline{\mathcal{E}}_{\mathbb{Z}})$ using
the path structure of the Thue--Morse sequence.
| [{'version': 'v1', 'created': 'Sun, 3 May 2015 14:08:42 GMT'}
{'version': 'v2', 'created': 'Thu, 3 Mar 2016 04:07:30 GMT'}] | 2016-03-04 | [array(['Kim', 'Sun Ho', ''], dtype=object)] |
19,575 | hep-th/0409005 | Alexander Chervov | A. Chervov, L. Rybnikov | Deformation quantization of submanifolds and reductions via
Duflo-Kirillov-Kontsevich map | 20 pages | null | null | ITEP-TH-28/04 | hep-th math-ph math.MP math.QA | null | We propose the following receipt to obtain the quantization of the Poisson
submanifold $N$ defined by the equations $f_i=0$ (where $f_i$ are Casimirs)
from the known quantization of the manifold $M$: one should consider factor
algebra of the quantized functions on $M$ by the images of $D(f_i)$, where $D:
Fun(M) \to Fun(M)\otimes \CC[\hbar]$ is Duflo-Kirillov-Kontsevich map. We
conjecture that this algebra is isomorphic to quantization of $Fun(N)$ with
Poisson structure inherited from $M$. Analogous conjecture concerning the
Hamiltonian reduction saying that "deformation quantization commutes with
reduction" is presented. The conjectures are checked in the case of $S^2$ which
can be quantized as a submanifold, as a reduction and using recently found
explicit star product. It's shown that all the constructions coincide.
| [{'version': 'v1', 'created': 'Wed, 1 Sep 2004 13:11:40 GMT'}] | 2007-05-23 | [array(['Chervov', 'A.', ''], dtype=object)
array(['Rybnikov', 'L.', ''], dtype=object)] |
19,576 | 1609.04953 | Iver Brevik | I. Brevik, E. Elizalde, V. V. Obukhov and A. V. Timoshkin | Inflationary Universe with a Viscous Fluid Avoiding Self-Reproduction | 9 pages, no figures. To appear in Annalen der Physik | null | 10.1002/andp.201600195 | null | gr-qc | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We consider a universe with a bulk viscous cosmic fluid, in a flat
Friedmann-Lemaitre-Robertson-Walker geometry. We derive the conditions for the
existence of inflation, and those which at the same time prevent the occurrence
of self-reproduction. Our theoretical model gives results which are in perfect
agreement with the most recent data from the PLANCK surveyor.
| [{'version': 'v1', 'created': 'Fri, 16 Sep 2016 08:49:59 GMT'}] | 2017-04-05 | [array(['Brevik', 'I.', ''], dtype=object)
array(['Elizalde', 'E.', ''], dtype=object)
array(['Obukhov', 'V. V.', ''], dtype=object)
array(['Timoshkin', 'A. V.', ''], dtype=object)] |
19,577 | 1408.2872 | Reuben Kahan Puddy Dr | R.K. Puddy, L.W Smith, H. Al-Taie, C. H. Chong, I. Farrer, J.P.
Griffiths, D.A. Ritchie, M.J. Kelly, M. Pepper, C.G. Smith | Multiplexed Charge-locking Device for Large Arrays of Quantum Devices | 5 pages, 7 figures | null | 10.1063/1.4932012 | null | cond-mat.mes-hall | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We present a method of forming and controlling large arrays of gate-defined
quantum devices. The method uses a novel, on-chip, multiplexed charge-locking
system and helps to overcome the restraints imposed by the number of wires
available in cryostat measurement systems. Two device innovations are
introduced. Firstly, a multiplexer design which utilises split gates to allow
the multiplexer to divide three or more ways at each branch. Secondly we
describe a device architecture that utilises a multiplexer-type scheme to lock
charge onto gate electrodes. The design allows access to and control of gates
whose total number exceeds that of the available electrical contacts and
enables the formation, modulation and measurement of large arrays of quantum
devices. We fabricate devices utilising these innovations on n-type GaAs/AlGaAs
substrates and investigate the stability of the charge locked on to the gates.
Proof-of-concept is shown by measurement of the Coulomb blockade peaks of a
single quantum dot formed by a floating gate in the device. The floating gate
is seen to drift by approximately one Coulomb oscillation per hour.
| [{'version': 'v1', 'created': 'Tue, 12 Aug 2014 22:31:08 GMT'}
{'version': 'v2', 'created': 'Thu, 21 Aug 2014 11:08:50 GMT'}] | 2015-10-28 | [array(['Puddy', 'R. K.', ''], dtype=object)
array(['Smith', 'L. W', ''], dtype=object)
array(['Al-Taie', 'H.', ''], dtype=object)
array(['Chong', 'C. H.', ''], dtype=object)
array(['Farrer', 'I.', ''], dtype=object)
array(['Griffiths', 'J. P.', ''], dtype=object)
array(['Ritchie', 'D. A.', ''], dtype=object)
array(['Kelly', 'M. J.', ''], dtype=object)
array(['Pepper', 'M.', ''], dtype=object)
array(['Smith', 'C. G.', ''], dtype=object)] |
19,578 | 2303.11303 | Johannes Greil | Johannes Greil, Matthias Golibrzuch, Martina Kiechle, \'Ad\'am Papp,
Valentin Ahrens, Gy\"orgy Csaba, Markus Becherer | Secondary Excitation of Spin-Waves: How Electromagnetic Cross-Talk
Impacts on Magnonic Devices | 5 pages, 5 figures | null | null | null | physics.app-ph | http://creativecommons.org/licenses/by-nc-nd/4.0/ | This work examines the impact of electromagnetic cross-talk in magnonic
devices when using inductive spin-wave (SW) transducers. We present detailed
electrical SW spectroscopy measurements showing the signal contributions to be
considered in magnonic device design. We further provide a rule of thumb
estimation for the cross-talk that is responsible for the secondary SW
excitation at the output transducer. Simulations and calibrated electrical
characterizations underpin this method. Additionally, we visualize the
secondary SW excitation via time-resolved MOKE imaging in the forward-volume
configuration in a 100nm Yttrium-Iron-Garnet (YIG) system. Our work is a step
towards fast yet robust joint electromagentic-micromagnetic magnonic device
design.
| [{'version': 'v1', 'created': 'Mon, 20 Mar 2023 17:42:06 GMT'}
{'version': 'v2', 'created': 'Tue, 4 Jul 2023 11:32:47 GMT'}] | 2023-07-06 | [array(['Greil', 'Johannes', ''], dtype=object)
array(['Golibrzuch', 'Matthias', ''], dtype=object)
array(['Kiechle', 'Martina', ''], dtype=object)
array(['Papp', 'Ádám', ''], dtype=object)
array(['Ahrens', 'Valentin', ''], dtype=object)
array(['Csaba', 'György', ''], dtype=object)
array(['Becherer', 'Markus', ''], dtype=object)] |
19,579 | 2207.06867 | Takanori Ashihara | Takanori Ashihara, Takafumi Moriya, Kohei Matsuura, Tomohiro Tanaka | Deep versus Wide: An Analysis of Student Architectures for Task-Agnostic
Knowledge Distillation of Self-Supervised Speech Models | Accepted at Interspeech 2022 | null | null | null | cs.CL cs.SD eess.AS | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Self-supervised learning (SSL) is seen as a very promising approach with high
performance for several speech downstream tasks. Since the parameters of SSL
models are generally so large that training and inference require a lot of
memory and computational cost, it is desirable to produce compact SSL models
without a significant performance degradation by applying compression methods
such as knowledge distillation (KD). Although the KD approach is able to shrink
the depth and/or width of SSL model structures, there has been little research
on how varying the depth and width impacts the internal representation of the
small-footprint model. This paper provides an empirical study that addresses
the question. We investigate the performance on SUPERB while varying the
structure and KD methods so as to keep the number of parameters constant; this
allows us to analyze the contribution of the representation introduced by
varying the model architecture. Experiments demonstrate that a certain depth is
essential for solving content-oriented tasks (e.g. automatic speech
recognition) accurately, whereas a certain width is necessary for achieving
high performance on several speaker-oriented tasks (e.g. speaker
identification). Based on these observations, we identify, for SUPERB, a more
compressed model with better performance than previous studies.
| [{'version': 'v1', 'created': 'Thu, 14 Jul 2022 12:43:36 GMT'}
{'version': 'v2', 'created': 'Thu, 1 Sep 2022 10:26:42 GMT'}] | 2022-09-02 | [array(['Ashihara', 'Takanori', ''], dtype=object)
array(['Moriya', 'Takafumi', ''], dtype=object)
array(['Matsuura', 'Kohei', ''], dtype=object)
array(['Tanaka', 'Tomohiro', ''], dtype=object)] |
19,580 | math/9908153 | Toshiyuki Tanisaki | Masaki Kashiwara and Toshiyuki Tanisaki | Parabolic Kazhdan-Lusztig polynomials and Schubert varieties | 21 pages | null | null | null | math.RT math.QA | null | We shall give a description of the intersection cohomology groups of the
Schubert varieties in partial flag manifolds over symmetrizable Kac-Moody Lie
algebras in terms of parabolic Kazhdan-Lusztig polynomials introduced by
Deodhar.
| [{'version': 'v1', 'created': 'Sat, 28 Aug 1999 08:49:15 GMT'}
{'version': 'v2', 'created': 'Wed, 8 Dec 1999 02:57:13 GMT'}] | 2007-05-23 | [array(['Kashiwara', 'Masaki', ''], dtype=object)
array(['Tanisaki', 'Toshiyuki', ''], dtype=object)] |
19,581 | cond-mat/0107197 | Kai Chang | Kai Chang, J.B.Xia and F.M.Peeters | Oscillating magnetoresistance in diluted magnetic semiconductor barrier
structures | 4 pages, 6 figures, submitted to Phys. Rev. B | null | 10.1103/PhysRevB.65.115209 | null | cond-mat | null | Ballistic spin polarized transport through diluted magnetic semiconductor
(DMS) single and double barrier structures is investigated theoretically using
a two-component model. The tunneling magnetoresistance (TMR) of the system
exhibits oscillating behavior when the magnetic field are varied. An
interesting beat pattern in the TMR and spin polarization is found for
different NMS/DMS double barrier structures which arises from an interplay
between the spin-up and spin-down electron channels which are splitted by the
s-d exchange interaction.
| [{'version': 'v1', 'created': 'Tue, 10 Jul 2001 12:39:24 GMT'}
{'version': 'v2', 'created': 'Fri, 13 Jul 2001 06:10:01 GMT'}] | 2009-11-07 | [array(['Chang', 'Kai', ''], dtype=object)
array(['Xia', 'J. B.', ''], dtype=object)
array(['Peeters', 'F. M.', ''], dtype=object)] |
19,582 | cond-mat/0509529 | Antonio Jose Roque da Silva | Frederico D. Novaes, Antonio J. R. da Silva, E. Z. da Silva, and A.
Fazzio | Oxygen clamps in gold nanowires | 4 pages; 4 figures | null | 10.1103/PhysRevLett.96.016104 | null | cond-mat.mes-hall cond-mat.mtrl-sci | null | We investigate how the insertion of an oxygen atom in an atomically thin gold
nanowire can affect its rupture. We find, using ab initio total energy density
functional theory calculations, that O atoms when inserted in gold nanowires
form not only stable but also very strong bonds, in such a way that they can
extract atoms from a stable tip, serving in this way as a clamp that could be
used to pull a string of gold atoms.
| [{'version': 'v1', 'created': 'Tue, 20 Sep 2005 21:36:49 GMT'}] | 2009-11-11 | [array(['Novaes', 'Frederico D.', ''], dtype=object)
array(['da Silva', 'Antonio J. R.', ''], dtype=object)
array(['da Silva', 'E. Z.', ''], dtype=object)
array(['Fazzio', 'A.', ''], dtype=object)] |
19,583 | 1805.11510 | Xiaoyi Li | Nate Zou, Eric Li, Henry Zhang | ALZA: An Efficient Hybrid Decentralized Payment System | Overlap wording with Hadoop file systems | null | null | null | cs.DC | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The efficiency of decentralized book systems like Bitcoin and Ethereum has
always been a challenge. It is usually measured by three major factors:
scalability, throughput, and latency. Scalability refers to how the system
capacity is increased by adding more physical resources. Throughput measures
the volume of transactions for a given period of time, where most current
solutions attempt to improve such as NEO, EOS, etc. Latency measures the
processing time of any single transaction. In current blockchain based systems,
the block generation rate is the main latency bottleneck. Off-chain processes
such as state channels are the most recent work that can integrate partial
inbound transactions, reducing latency. Unfortunately, the state channel
introduces more issues at the same time, such as cross-channel synchronization,
which makes the state channel unavailable for full adoption of current
blockchain solutions.
In order to solve the efficiency problem, we proposed an end-to-end solution
called ALZA, which links the dedicated high-throughput blockchain with
self-organizing payment fields. This mechanism allows arbitrary set of users to
create payment fields that process extremely low latency transactions within
each field. Therefore, users can make transactions almost immediately. Since
all transactions are conducted within fields, transaction costs will be reduced
by several orders of magnitude. In addition, ALZA distributes main ledger to
each client through an innovative replication mechanism. Therefore, the system
will be significantly more robust to blockchain system failures. In theory,
ALZA can complete millions of transactions in one second, which naturally
supports high-frequency trading.
| [{'version': 'v1', 'created': 'Fri, 25 May 2018 19:25:02 GMT'}
{'version': 'v2', 'created': 'Thu, 21 Jun 2018 18:24:50 GMT'}
{'version': 'v3', 'created': 'Mon, 25 Jun 2018 07:40:42 GMT'}
{'version': 'v4', 'created': 'Wed, 27 Jun 2018 06:15:47 GMT'}
{'version': 'v5', 'created': 'Sat, 30 Jun 2018 06:42:28 GMT'}
{'version': 'v6', 'created': 'Wed, 4 Jul 2018 19:37:39 GMT'}
{'version': 'v7', 'created': 'Sat, 14 Jul 2018 01:53:40 GMT'}
{'version': 'v8', 'created': 'Sat, 20 Oct 2018 02:38:12 GMT'}
{'version': 'v9', 'created': 'Thu, 7 Mar 2019 22:03:41 GMT'}] | 2019-03-11 | [array(['Zou', 'Nate', ''], dtype=object)
array(['Li', 'Eric', ''], dtype=object)
array(['Zhang', 'Henry', ''], dtype=object)] |
19,584 | 2306.03661 | Arthur Chakwizira | Arthur Chakwizira, Filip Szczepankiewicz, and Markus Nilsson | Diffusional exchange versus microscopic kurtosis from CTI: two
conflicting interpretations of the same data | null | null | null | null | physics.med-ph | http://creativecommons.org/licenses/by/4.0/ | Correlation tensor imaging (CTI) is a new diffusion MRI framework that
utilises double diffusion encoding (DDE) to resolve isotropic, anisotropic and
microscopic kurtosis sources. Microscopic kurtosis in CTI is provided by the
contrast between SDE and parallel DDE signals at the same b-value.
Multi-Gaussian exchange (MGE) is a diffusion MRI framework that utilises DDE to
measure exchange. The highest exchange sensitivity in MGE is obtained by
contrasting SDE and DDE signals at the same b-value. CTI and MGE can thus be
applied to analyse the same data but provide conflicting interpretations of
that data. We perform Monte Carlo simulations in different geometries with
varying levels of exchange to determine which approach is more compatible with
the data. Simulations reveal that in all microstructures considered, CTI
microscopic kurtosis drastically increases when exchange is introduced.
Furthermore, in microstructures that are well-described by the multi-Gaussian
assumption, CTI-estimated microscopic kurtosis increases with both the exchange
rate and the mixing time, despite fulfilment of the long-mixing-time condition
of CTI. Increasing the exchange rate by a factor of 2 positively biases CTI
microscopic kurtosis by approximately the same factor. At a modest exchange
rate of 10 /s, varying the mixing time from 12 to 100 ms increases CTI
microscopic kurtosis by at least a factor of 3. To address this problem, we
propose a heuristic approach to combine CTI and MGE to estimate
intra-compartmental kurtosis unconfounded by exchange and demonstrate its
feasibility using numerical simulations.
| [{'version': 'v1', 'created': 'Tue, 6 Jun 2023 13:25:44 GMT'}] | 2023-06-07 | [array(['Chakwizira', 'Arthur', ''], dtype=object)
array(['Szczepankiewicz', 'Filip', ''], dtype=object)
array(['Nilsson', 'Markus', ''], dtype=object)] |
19,585 | gr-qc/9903085 | Modanese Giovanni | G. Modanese | Effect of a scale-dependent cosmological term on the motion of small
test particles in a Schwarzschild background | LaTeX, 13 pages | Nucl.Phys. B556 (1999) 397-408 | 10.1016/S0550-3213(99)00355-7 | ECT*-99-2 | gr-qc | null | It was recently suggested that the gravitational action could contain a
scale-dependent cosmological term, depending on the length or momentum scale
characteristic of the processes under consideration. In this work we explore a
simple possible consequence of this assumption. We compute the field generated
in empty space by a static spherical source (the Schwarzschild metric), using
the modified action. The resulting static potential turns out to contain a tiny
non-Newtonian component which depends on the size of the test particles. The
possible relevance of this small correction for the analysis of the recent
Pioneers data [J.D. Anderson et al., Phys. Rev. Lett. 81 (1998) 2858] is
briefly discussed.
| [{'version': 'v1', 'created': 'Mon, 22 Mar 1999 19:13:56 GMT'}] | 2009-10-31 | [array(['Modanese', 'G.', ''], dtype=object)] |
19,586 | 1008.2125 | Massimiliano Rinaldi | Carlos Mayoral, Alessandro Fabbri and Massimiliano Rinaldi | Step-like discontinuities in Bose-Einstein condensates and Hawking
radiation: dispersion effects | One figure and few comments added. Version accepted for publication
in PRD | Phys.Rev.D83:124047,2011 | 10.1103/PhysRevD.83.124047 | null | gr-qc cond-mat.quant-gas hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | In this paper we extend the hydrodynamic results of [1] and study,
analytically, the propagation of Bogoliubov phonons on top of Bose-Einstein
condensates with step-like discontinuities by taking into account dispersion
effects. We focus on the Hawking signal in the density-density correlations in
the formation of acoustic black hole-like configurations.
| [{'version': 'v1', 'created': 'Thu, 12 Aug 2010 15:02:24 GMT'}
{'version': 'v2', 'created': 'Fri, 27 May 2011 13:42:41 GMT'}] | 2011-07-28 | [array(['Mayoral', 'Carlos', ''], dtype=object)
array(['Fabbri', 'Alessandro', ''], dtype=object)
array(['Rinaldi', 'Massimiliano', ''], dtype=object)] |
19,587 | 1411.7061 | Michael Shara | Michael M. Shara, Jarrod R. Hurley and Rosemary A. Mardling | Dynamical Interactions Make Hot Jupiters in Open Star Clusters | 18 pages, 4 figures | null | 10.3847/0004-637X/816/2/59 | null | astro-ph.EP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Explaining the origin and evolution of exoplanetary "hot Jupiters" remains a
significant challenge. One possible mechanism for their production is
planet-planet interactions, which produces hot Jupiters from planets born far
from their host stars but near their dynamical stability limits. In the much
more likely case of planets born far from their dynamical stability limits, can
hot Jupiters can be formed in star clusters? Our N-body simulations of
planetary systems inside star clusters answer this question in the affirmative,
and show that hot Jupiter formation is not a rare event. We detail three case
studies of the dynamics-induced births of hot Jupiters on highly eccentric
orbits that can only occur inside star clusters. The hot Jupiters' orbits bear
remarkable similarities to those of some of the most extreme exoplanets known:
HAT-P-32 b, HAT-P-2 b, HD 80606 b and GJ 876 d. If stellar perturbations formed
these hot Jupiters then our simulations predict that these very hot, inner
planets are often accompanied by much more distant gas giants in highly
eccentric orbits.
| [{'version': 'v1', 'created': 'Tue, 25 Nov 2014 22:51:56 GMT'}
{'version': 'v2', 'created': 'Wed, 4 Nov 2015 01:00:44 GMT'}] | 2017-06-14 | [array(['Shara', 'Michael M.', ''], dtype=object)
array(['Hurley', 'Jarrod R.', ''], dtype=object)
array(['Mardling', 'Rosemary A.', ''], dtype=object)] |
19,588 | 2105.09914 | Bo-Hsiang (Andy) Tseng | Bo-Hsiang Tseng, Shruti Bhargava, Jiarui Lu, Joel Ruben Antony Moniz,
Dhivya Piraviperumal, Lin Li, Hong Yu | CREAD: Combined Resolution of Ellipses and Anaphora in Dialogues | Accepted as a long paper in the main conference by NAACL 2021 | null | null | null | cs.AI | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Anaphora and ellipses are two common phenomena in dialogues. Without
resolving referring expressions and information omission, dialogue systems may
fail to generate consistent and coherent responses. Traditionally, anaphora is
resolved by coreference resolution and ellipses by query rewrite. In this work,
we propose a novel joint learning framework of modeling coreference resolution
and query rewriting for complex, multi-turn dialogue understanding. Given an
ongoing dialogue between a user and a dialogue assistant, for the user query,
our joint learning model first predicts coreference links between the query and
the dialogue context, and then generates a self-contained rewritten user query.
To evaluate our model, we annotate a dialogue based coreference resolution
dataset, MuDoCo, with rewritten queries. Results show that the performance of
query rewrite can be substantially boosted (+2.3% F1) with the aid of
coreference modeling. Furthermore, our joint model outperforms the
state-of-the-art coreference resolution model (+2% F1) on this dataset.
| [{'version': 'v1', 'created': 'Thu, 20 May 2021 17:17:26 GMT'}] | 2021-05-21 | [array(['Tseng', 'Bo-Hsiang', ''], dtype=object)
array(['Bhargava', 'Shruti', ''], dtype=object)
array(['Lu', 'Jiarui', ''], dtype=object)
array(['Moniz', 'Joel Ruben Antony', ''], dtype=object)
array(['Piraviperumal', 'Dhivya', ''], dtype=object)
array(['Li', 'Lin', ''], dtype=object)
array(['Yu', 'Hong', ''], dtype=object)] |
19,589 | 1110.4173 | Vivek Malik K. | V. K. Malik and I. Marozau and S. Das and B. Doggett and D. K.
Satapathy and M. A. Uribe-Laverde and N. Biskup and M. Varela and C. W.
Schneider and C. Marcelot and J. Stahn and C. Bernhard | Pulsed laser deposition growth of heteroepitaxial
YBa2Cu3O7/La0.67Ca0.33MnO3 superlattices on NdGaO3 and
Sr0.7La0.3Al0.65Ta0.35O3 substrates | null | Phys. Rev. B 85, 054514 (2012) | 10.1103/PhysRevB.85.054514 | null | cond-mat.mtrl-sci cond-mat.str-el cond-mat.supr-con | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Heteroepitaxial superlattices of [YBa2Cu3O7(n)/ La0.67Ca0.33MnO3(m)]x, where
n and m are the number of YBCO and LCMO monolayers and x the number of bilayer
repetitions, have been grown with pulsed laser deposition on NdGaO3 (110) and
Sr0.7La0.3Al0.65Ta0.35O3 (LSAT) (001). These substrates are well lattice
matched with YBCO and LCMO and, unlike the commonly used SrTiO3, they do not
give rise to complex and uncontrolled strain effects due to structural
transitions at low temperature. The growth dynamics and the structure have been
studied in-situ with reflection high energy electron diffraction (RHEED) and
ex-situ with scanning transmission electron microscopy (STEM), x-ray
diffraction, and neutron reflectometry. The individual layers are found to be
flat and continuous over long lateral distances with sharp and coherent
interfaces and with a well-defined thickness of the individual layer. The only
visible defects are antiphase boundaries in the YBCO layers that originate from
perovskite unit cell height steps at the interfaces with the LCMO layers. We
also find that the first YBCO monolayer at the interface with LCMO has an
unusual growth dynamics and is lacking the CuO chain layer while the subsequent
YBCO layers have the regular Y-123 structure. Accordingly, the CuO2 bilayers at
both the LCMO/YBCO and the YBCO/LCMO interfaces are lacking one of their
neighboring CuO chain layers and thus half of their hole doping reservoir.
Nevertheless, from electric transport measurements on asuperlattice with n=2 we
obtain evidence that the interfacial CuO2 bilayers remain conducting and even
exhibit the onset of a superconducting transition at very low temperature.
Finally, we show from dc magnetization and neutron reflectometry measurements
that the LCMO layers are strongly ferromagnetic.
| [{'version': 'v1', 'created': 'Wed, 19 Oct 2011 03:45:46 GMT'}] | 2012-03-26 | [array(['Malik', 'V. K.', ''], dtype=object)
array(['Marozau', 'I.', ''], dtype=object)
array(['Das', 'S.', ''], dtype=object)
array(['Doggett', 'B.', ''], dtype=object)
array(['Satapathy', 'D. K.', ''], dtype=object)
array(['Uribe-Laverde', 'M. A.', ''], dtype=object)
array(['Biskup', 'N.', ''], dtype=object)
array(['Varela', 'M.', ''], dtype=object)
array(['Schneider', 'C. W.', ''], dtype=object)
array(['Marcelot', 'C.', ''], dtype=object)
array(['Stahn', 'J.', ''], dtype=object)
array(['Bernhard', 'C.', ''], dtype=object)] |
19,590 | 2102.12875 | Andrew Larkin | Andrew Larkin | Quenched decay of correlations for one dimensional random Lorenz maps | null | null | null | null | math.DS | http://creativecommons.org/publicdomain/zero/1.0/ | We study rates of mixing for small random perturbations of one dimensional
Lorenz maps. Using a random tower construction, we prove that, for Holder
observables, the random system admits exponential rates of quenched correlation
decay.
| [{'version': 'v1', 'created': 'Thu, 25 Feb 2021 14:23:07 GMT'}
{'version': 'v2', 'created': 'Thu, 12 Aug 2021 10:08:35 GMT'}
{'version': 'v3', 'created': 'Wed, 24 Nov 2021 21:52:58 GMT'}] | 2021-11-29 | [array(['Larkin', 'Andrew', ''], dtype=object)] |
19,591 | 1411.7404 | Drake Deming | Drake Deming, Heather Knutson, Joshua Kammer, Benjamin J. Fulton,
James Ingalls, Sean Carey, Adam Burrows, Jonathan J. Fortney, Kamen Todorov,
Eric Agol, Nicolas Cowan, Jean-Michel Desert, Jonathan Fraine, Jonathan
Langton, Caroline Morley, and Adam P. Showman | Spitzer Secondary Eclipses of the Dense, Modestly-irradiated, Giant
Exoplanet HAT-P-20b Using Pixel-Level Decorrelation | version published in ApJ, minor text and figure revisions | null | 10.1088/0004-637X/805/2/132 | null | astro-ph.EP | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | HAT-P-20b is a giant exoplanet that orbits a metal-rich star. The planet
itself has a high total density, suggesting that it may also have a high
metallicity in its atmosphere. We analyze two eclipses of the planet in each of
the 3.6- and 4.5 micron bands of Warm Spitzer. These data exhibit intra-pixel
detector sensitivity fluctuations that were resistant to traditional
decorrelation methods. We have developed a simple, powerful, and radically
different method to correct the intra-pixel effect for Warm Spitzer data, which
we call pixel-level decorrelation (PLD). PLD corrects the intra-pixel effect
very effectively, but without explicitly using - or even measuring - the
fluctuations in the apparent position of the stellar image. We illustrate and
validate PLD using synthetic and real data, and comparing the results to
previous analyses. PLD can significantly reduce or eliminate red noise in
Spitzer secondary eclipse photometry, even for eclipses that have proven to be
intractable using other methods. Our successful PLD analysis of four HAT-P-20b
eclipses shows a best-fit blackbody temperature of 1134 +/-29K, indicating
inefficient longitudinal transfer of heat, but lacking evidence for strong
molecular absorption. We find sufficient evidence for variability in the 4.5
micron band that the eclipses should be monitored at that wavelength by
Spitzer, and this planet should be a high priority for JWST spectroscopy. All
four eclipses occur about 35 minutes after orbital phase 0.5, indicating a
slightly eccentric orbit. A joint fit of the eclipse and transit times with
extant RV data yields e(cos{omega}) = 0.01352 (+0.00054, -0.00057), and
establishes the small eccentricity of the orbit to high statistical confidence.
Given the existence of a bound stellar companion, HAT-P-20b is another
excellent candidate for orbital evolution via Kozai migration or other
three-body mechanism.
| [{'version': 'v1', 'created': 'Wed, 26 Nov 2014 21:35:12 GMT'}
{'version': 'v2', 'created': 'Wed, 3 Jun 2015 19:13:06 GMT'}] | 2015-06-04 | [array(['Deming', 'Drake', ''], dtype=object)
array(['Knutson', 'Heather', ''], dtype=object)
array(['Kammer', 'Joshua', ''], dtype=object)
array(['Fulton', 'Benjamin J.', ''], dtype=object)
array(['Ingalls', 'James', ''], dtype=object)
array(['Carey', 'Sean', ''], dtype=object)
array(['Burrows', 'Adam', ''], dtype=object)
array(['Fortney', 'Jonathan J.', ''], dtype=object)
array(['Todorov', 'Kamen', ''], dtype=object)
array(['Agol', 'Eric', ''], dtype=object)
array(['Cowan', 'Nicolas', ''], dtype=object)
array(['Desert', 'Jean-Michel', ''], dtype=object)
array(['Fraine', 'Jonathan', ''], dtype=object)
array(['Langton', 'Jonathan', ''], dtype=object)
array(['Morley', 'Caroline', ''], dtype=object)
array(['Showman', 'Adam P.', ''], dtype=object)] |
19,592 | cond-mat/0009474 | German Sierra | M.A. Martin-Delgado, J. Rodriguez-Laguna and G. Sierra | Single-Block Renormalization Group: Quantum Mechanical Problems | RevTex4b4, 13 pages, two-column, 8 figs | null | 10.1016/S0550-3213(01)00073-6 | null | cond-mat | null | We reformulate the density matrix renormalization group method (DMRG) in
terms of a single block, instead of the standard left and right blocks used in
the construction of the superblock. This version of the DMRG, which we call the
puncture renormalization group (PRG), makes easy and natural the extension of
the DMRG to higher dimensional lattices. To test numerically this proposal, we
study several quantum mechanical models in one, two and three dimensions. In 1D
the performance of the standard DMRG is much better than its PRG version,
however for 2D models the PRG is more efficient than the DMRG in a variety of
circumstances. In 3D the PRG performs also quite well.
| [{'version': 'v1', 'created': 'Fri, 29 Sep 2000 16:07:21 GMT'}] | 2009-10-31 | [array(['Martin-Delgado', 'M. A.', ''], dtype=object)
array(['Rodriguez-Laguna', 'J.', ''], dtype=object)
array(['Sierra', 'G.', ''], dtype=object)] |
19,593 | 1012.5767 | Andrei Prasolov | Andrei V. Prasolov | Quasi-shape theory of locally finite and paracompact spaces | null | null | null | null | math.AT | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Shape theory works nice for (Hausdorff) paracompact spaces, but for spaces
with no separation axioms, it seems to be quite poor. However, for finite and
locally finite spaces their weak homotopy type is rather rich, and is
equivalent to the weak homotopy type of finite and locally finite polynedra,
respectively. In the paper there is proposed a variant of shape theory called
quasi-shape, which suits both paracompact and locally finite spaces, i.e. the
quas-shape is isomorphic to the weak homotopy type for locally finite spaces,
and is \natural-equivalent to the ordinary shape in the case of paracompact
spaces.
| [{'version': 'v1', 'created': 'Tue, 28 Dec 2010 14:09:47 GMT'}] | 2010-12-30 | [array(['Prasolov', 'Andrei V.', ''], dtype=object)] |
19,594 | nucl-th/9611033 | Joseph N. Ginocchio | Joseph N. Ginocchio | New Type of Collective Motion for N $\sim$ Z Nuclei | 10 pages, latex, one figure given on request, LA-UR-96-997 | Phys.Rev.Lett.77:28-31,1996 | 10.1103/PhysRevLett.77.28 | null | nucl-th | null | We study a new type of collective motion with alpha-particle type of
correlations and show that it may be relevant for N $\sim$ Z nuclei.
| [{'version': 'v1', 'created': 'Fri, 15 Nov 1996 22:28:01 GMT'}] | 2009-02-11 | [array(['Ginocchio', 'Joseph N.', ''], dtype=object)] |
19,595 | 0802.2306 | Gareth Baxter | G. J. Baxter, M. R. Frean | Software graphs and programmer awareness | 9 pages, 8 figures | null | null | null | cs.SE cs.PL | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Dependencies between types in object-oriented software can be viewed as
directed graphs, with types as nodes and dependencies as edges. The in-degree
and out-degree distributions of such graphs have quite different forms, with
the former resembling a power-law distribution and the latter an exponential
distribution. This effect appears to be independent of application or type
relationship. A simple generative model is proposed to explore the proposition
that the difference arises because the programmer is aware of the out-degree of
a type but not of its in-degree. The model reproduces the two distributions,
and compares reasonably well to those observed in 14 different type
relationships across 12 different Java applications.
| [{'version': 'v1', 'created': 'Sat, 16 Feb 2008 03:38:03 GMT'}] | 2008-02-19 | [array(['Baxter', 'G. J.', ''], dtype=object)
array(['Frean', 'M. R.', ''], dtype=object)] |
19,596 | 2210.16712 | Hassaan Hashmi | Hassaan Hashmi, Spyridon Pougkakiotis, Dionysios S. Kalogerias | Model-Free Learning of Optimal Beamformers for Passive IRS-Assisted
Sumrate Maximization | null | null | null | null | eess.SY cs.SY | http://creativecommons.org/licenses/by/4.0/ | Although Intelligent Reflective Surfaces (IRSs) are a cost-effective
technology promising high spectral efficiency in future wireless networks,
obtaining optimal IRS beamformers is a challenging problem with several
practical limitations. Assuming fully-passive, sensing-free IRS operation, we
introduce a new data-driven Zeroth-order Stochastic Gradient Ascent (ZoSGA)
algorithm for sumrate optimization in an IRS-aided downlink setting. ZoSGA does
not require access to channel model or network structure information, and
enables learning of optimal long-term IRS beamformers jointly with standard
short-term precoding, based only on conventional effective channel state
information. Supported by state-of-the-art (SOTA) convergence analysis,
detailed simulations confirm that ZoSGA exhibits SOTA empirical behavior as
well, consistently outperforming standard fully model-based baselines, in a
variety of scenarios.
| [{'version': 'v1', 'created': 'Sun, 30 Oct 2022 00:56:48 GMT'}
{'version': 'v2', 'created': 'Fri, 24 Mar 2023 20:07:26 GMT'}] | 2023-03-28 | [array(['Hashmi', 'Hassaan', ''], dtype=object)
array(['Pougkakiotis', 'Spyridon', ''], dtype=object)
array(['Kalogerias', 'Dionysios S.', ''], dtype=object)] |
19,597 | 0906.3936 | Gilles Chiocchia | L\'ea Tourneur (IC), Alain Schmitt (IC), Gilles Chiocchia (IC) | In Vivo Localization of Fas-Associated Death Domain Protein in the
Nucleus and Cytoplasm of Normal Thyroid and Liver Cells | null | open autoimmunty journal 1 (2009) 27-32 | null | null | q-bio.SC | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | FADD (Fas-associated death domain) is the main death receptor adaptor
molecule that transmits apoptotic signal. Recently, FADD protein was shown to
be expressed both in the cytoplasm and nucleus of in vitro cell lines. In
contrast to the cytoplasmic FADD, the nuclear FADD was shown to protect cells
from apoptosis. However, in vivo subcellular localization of FADD was still
unknown. Here, we demonstrated that FADD protein was expressed in both
cytoplasmic and nuclear compartment in ex vivo thyroid cells demonstrating that
nuclear sublocalization of FADD protein was a relevant phenomenon occurring in
vivo. Moreover, we showed that in the nucleus of untransformed thyroid cells
FADD localized mainly on euchromatin. We confirmed the nuclear localization of
FADD in ex vivo liver and showed that in this organ FADD and MBD4 interact
together. These results demonstrate that FADD is physiologically expressed in
the nucleus of cells in at least two mouse organs. This particular localization
opens new possible role of FADD in vivo either asan inhibitor of cell death, or
as a transcription factor, or as a molecular link between apoptosis and genome
surveillance.
| [{'version': 'v1', 'created': 'Mon, 22 Jun 2009 07:21:54 GMT'}] | 2009-06-23 | [array(['Tourneur', 'Léa', '', 'IC'], dtype=object)
array(['Schmitt', 'Alain', '', 'IC'], dtype=object)
array(['Chiocchia', 'Gilles', '', 'IC'], dtype=object)] |
19,598 | 2205.01323 | Ritabrata Bhattacharya | Ritabrata Bhattacharya | Two loop mass renormalization in heterotic string theory: NS states | 25 pages, 6 figures | null | null | null | hep-th | http://creativecommons.org/publicdomain/zero/1.0/ | In this work computation of the renormalized mass at two loop order for the
NS sector of heterotic string theory is attempted. We identify the 1PI region
of the moduli space after a choice of gluing compatible local coordinates
around the external punctures, for a genus 2 Riemann surface with 2 punctures.
We then present a prescription for choosing a section avoiding the spurious
poles due to the presence of a required number of picture changing operators.
In practice this amounts to breaking up the region of integration over the
moduli space into different parts and carrying out the vertical integration
procedure near the spurious poles. This requires moving around the PCO
locations. We identify the co-dimension 2 subspace of the moduli space where
the spurious poles lie and hence we know which arrangements of PCOs to avoid.
We are unable to perform the integration over moduli space in this note and
hope to report on it in a later instalment.
| [{'version': 'v1', 'created': 'Tue, 3 May 2022 06:19:29 GMT'}
{'version': 'v2', 'created': 'Fri, 6 May 2022 05:56:53 GMT'}] | 2022-05-09 | [array(['Bhattacharya', 'Ritabrata', ''], dtype=object)] |
19,599 | astro-ph/0407303 | Izumi Sen Ohta | Izumi S. Ohta, Makoto Hattori and Hiroshi Matsuo | Development of super broadband interferometer in FIR | 9 pages, presented at the Glasgow SPIE conference "Optical, Infrared,
and Millimeter Space Telescopes", to appear in Proc. SPIE, vol. #5487-207 | null | 10.1117/12.551465 | Proc. SPIE, vol. 5487, part 3, pp 1563 - 1571 | astro-ph | null | We are developing the super broad band interferometer by applying the Fourier
Transform Spectrometer(FTS) to aperture synthesis system in mm and sub-mm
bands. We have constructed a compact system based on the Martin and Puplett
type Fourier Transform spectrometer (MP-FT). We call this equipment
Multi-Fourier Transform interferometer (MuFT). The band width of the system can
be extended as large as one wants contrary to the severely limited band width
of the usual interferometer due to the speed of the AD converter. The direct
detectors, e.g. bolometer, SIS video detector, can be used as the focal plane
detectors. This type of detectors have a great advantage in FIR band since they
are free from the quantum limit of the noise which limits the sensitivity of
the heterodyne detectors used in the usual interferometers. Further, the direct
detectors are able to make a large format array contrary to the heterodyne
detectors for which construction of a large format array is practically
difficult. These three characteristics make one be possible to develop high
sensitive super broad band FIR interferometer with wide field of view. In the
laboratory experiments, we have succeeded in measuring the spectroscopically
resolved 2D image of the source in 150GHz-900GHz band. The future application
of this technique to the observations from the space could open new interesting
possibilities in FIR astronomy.
| [{'version': 'v1', 'created': 'Thu, 15 Jul 2004 08:05:03 GMT'}
{'version': 'v2', 'created': 'Fri, 16 Jul 2004 10:13:43 GMT'}
{'version': 'v3', 'created': 'Wed, 7 Dec 2005 05:45:23 GMT'}] | 2009-11-10 | [array(['Ohta', 'Izumi S.', ''], dtype=object)
array(['Hattori', 'Makoto', ''], dtype=object)
array(['Matsuo', 'Hiroshi', ''], dtype=object)] |
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