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44.4k
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
18,600 |
1903.06763
|
Tiziano Portenier
|
Tiziano Portenier and Qiyang Hu and Paolo Favaro and Matthias Zwicker
|
Smart, Deep Copy-Paste
|
12 pages, 9 figures
| null | null | null |
cs.GR cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this work, we propose a novel system for smart copy-paste, enabling the
synthesis of high-quality results given a masked source image content and a
target image context as input. Our system naturally resolves both shading and
geometric inconsistencies between source and target image, resulting in a
merged result image that features the content from the pasted source image,
seamlessly pasted into the target context. Our framework is based on a novel
training image transformation procedure that allows to train a deep
convolutional neural network end-to-end to automatically learn a representation
that is suitable for copy-pasting. Our training procedure works with any image
dataset without additional information such as labels, and we demonstrate the
effectiveness of our system on two popular datasets, high-resolution face
images and the more complex Cityscapes dataset. Our technique outperforms the
current state of the art on face images, and we show promising results on the
Cityscapes dataset, demonstrating that our system generalizes to much higher
resolution than the training data.
|
[{'version': 'v1', 'created': 'Fri, 15 Mar 2019 19:07:34 GMT'}]
|
2019-03-19
|
[array(['Portenier', 'Tiziano', ''], dtype=object)
array(['Hu', 'Qiyang', ''], dtype=object)
array(['Favaro', 'Paolo', ''], dtype=object)
array(['Zwicker', 'Matthias', ''], dtype=object)]
|
18,601 |
1206.2612
|
Pavlo Pylyavskyy
|
Thomas Lam and Pavlo Pylyavskyy
|
Linear Laurent phenomenon algebras
|
31 pages
| null | null | null |
math.RT math.CO math.RA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In [LP] we introduced Laurent phenomenon algebras, a generalization of
cluster algebras. Here we give an explicit description of Laurent phenomenon
algebras with a linear initial seed arising from a graph. In particular, any
graph associahedron is shown to be the dual cluster complex for some Laurent
phenomenon algebra.
|
[{'version': 'v1', 'created': 'Tue, 12 Jun 2012 18:23:20 GMT'}
{'version': 'v2', 'created': 'Thu, 18 Oct 2012 17:53:36 GMT'}]
|
2012-10-19
|
[array(['Lam', 'Thomas', ''], dtype=object)
array(['Pylyavskyy', 'Pavlo', ''], dtype=object)]
|
18,602 |
astro-ph/9909379
|
Istvan Horvath
|
L. G. Balazs, A. Meszaros, I. Horvath, R. Vavrek
|
An intrinsic anisotropy in the angular distribution of gamma-ray bursts
|
5 pages, Accepted in A&A
|
Astron.Astrophys.Suppl.Ser. 138 (1999) 417
|
10.1051/aas:1999290
| null |
astro-ph
| null |
The anisotropy of the sky distribution of 2025 gamma-ray bursts (GRBs)
collected in Current BATSE catalog is confirmed. It is shown that the
quadrupole term being proportional to $\sim \sin 2b \sin l$ is non-zero with a
probability 99.9%. The occurrence of this anisotropy term is then supported by
the binomial test even with the probability 99.97%. It is also argued that this
anisotropy cannot be caused exclusively by instrumental effects due to the
non-uniform sky exposure of BATSE instrument; there should exist also some
intrinsic anisotropy in the angular distribution of GRBs. Separating GRBs into
short and long subclasses, it is shown that the 251 short ones are distributed
anisotropically, but the 681 long ones seem to be distributed still
isotropically. The 2-sample Kolmogorov-Smirnov test shows that they are
distributed differently with a 98.7% probability. The character of anisotropy
suggests that the cosmological origin of short GRBs further holds, and there is
no evidence for their Galactical origin. The work in essence contains the key
ideas and results of a recently published paper (\cite{balazs}), to which the
new result following from the 2-sample Kolmogorov-Smirnov test is added, too.
|
[{'version': 'v1', 'created': 'Wed, 22 Sep 1999 16:12:32 GMT'}]
|
2009-10-31
|
[array(['Balazs', 'L. G.', ''], dtype=object)
array(['Meszaros', 'A.', ''], dtype=object)
array(['Horvath', 'I.', ''], dtype=object)
array(['Vavrek', 'R.', ''], dtype=object)]
|
18,603 |
quant-ph/0410102
|
Andreas Osterloh
|
Andreas Osterloh and Jens Siewert
|
Constructing N-qubit entanglement monotones from anti-linear operators
|
5 pages, revtex4; more detailed illustration of the method
|
Phys. Rev. A 72, 012337 (2005)
|
10.1103/PhysRevA.72.012337
| null |
quant-ph math-ph math.MP
| null |
We present a method to construct entanglement measures for pure states of
multipartite qubit systems. The key element of our approach is an antilinear
operator that we call {\em comb} in reference to the {\em hairy-ball theorem}.
For qubits (or spin 1/2) the combs are automatically invariant under
$SL(2,\CC)$. This implies that the {\em filters} obtained from the combs are
entanglement monotones by construction. We give alternative formulae for the
concurrence and the 3-tangle as expectation values of certain antilinear
operators. As an application we discuss inequivalent types of genuine
four-qubit entanglement.
|
[{'version': 'v1', 'created': 'Wed, 13 Oct 2004 14:49:44 GMT'}
{'version': 'v2', 'created': 'Mon, 21 Mar 2005 11:14:27 GMT'}]
|
2007-05-23
|
[array(['Osterloh', 'Andreas', ''], dtype=object)
array(['Siewert', 'Jens', ''], dtype=object)]
|
18,604 |
1908.09921
|
Maxime Amblard
|
Maria-Andrea Cruz-Bland\'on (IDMC), Gosse Minnema (IDMC), Aria
Nourbakhsh (IDMC), Maria Boritchev (ENS Lyon, LORIA, SEMAGRAMME), Maxime
Amblard (SEMAGRAMME, LORIA)
|
Toward Dialogue Modeling: A Semantic Annotation Scheme for Questions and
Answers
| null |
LAW XIII 2019 - Linguistic Annotation Workshop - ACL Workshop, Jul
2019, Florence, Italy
| null | null |
cs.CL cs.AI
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The present study proposes an annotation scheme for classifying the content
and discourse contribution of question-answer pairs. We propose detailed
guidelines for using the scheme and apply them to dialogues in English,
Spanish, and Dutch. Finally, we report on initial machine learning experiments
for automatic annotation.
|
[{'version': 'v1', 'created': 'Fri, 23 Aug 2019 11:04:48 GMT'}]
|
2019-08-28
|
[array(['Cruz-Blandón', 'Maria-Andrea', '', 'IDMC'], dtype=object)
array(['Minnema', 'Gosse', '', 'IDMC'], dtype=object)
array(['Nourbakhsh', 'Aria', '', 'IDMC'], dtype=object)
array(['Boritchev', 'Maria', '', 'ENS Lyon, LORIA, SEMAGRAMME'],
dtype=object)
array(['Amblard', 'Maxime', '', 'SEMAGRAMME, LORIA'], dtype=object)]
|
18,605 |
1601.02842
|
Francois Couchot
|
Francois Couchot (LMNO)
|
Finitely generated powers of prime ideals
| null |
Palestine Journal of Mathematics, 2017, 6 (2), pp.1-8
| null | null |
math.RA math.AC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Let R be a commutative ring. If P is a maximal ideal of R whose a power is
finitely generated then we prove that P is finitely generated if R is either
locally coherent or arithmetical or a polynomial ring over a ring of global
dimension $\le$ 2. And if P is a prime ideal of R whose a power is finitely
generated then we show that P is finitely generated if R is either a reduced
coherent ring or a polynomial ring over a reduced arithmetical ring. These
results extend a theorem of Roitman, published in 2001, on prime ideals of
coherent integral domains.
|
[{'version': 'v1', 'created': 'Tue, 12 Jan 2016 13:08:41 GMT'}
{'version': 'v2', 'created': 'Tue, 18 Apr 2017 12:44:03 GMT'}]
|
2017-04-19
|
[array(['Couchot', 'Francois', '', 'LMNO'], dtype=object)]
|
18,606 |
2203.09025
|
Siyi Liu
|
Siyi Liu, Shu Yang, Yilong Zhang, Guanghan (Frank) Liu
|
Sensitivity analysis in longitudinal clinical trials via distributional
imputation
| null | null | null | null |
stat.ME
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Missing data is inevitable in longitudinal clinical trials. Conventionally,
the missing at random assumption is assumed to handle missingness, which
however is unverifiable empirically. Thus, sensitivity analysis is critically
important to assess the robustness of the study conclusions against untestable
assumptions. Toward this end, regulatory agencies often request using
imputation models such as return-to-baseline, control-based, and washout
imputation. Multiple imputation is popular in sensitivity analysis; however, it
may be inefficient and result in an unsatisfying interval estimation by Rubin's
combining rule. We propose distributional imputation (DI) in sensitivity
analysis, which imputes each missing value by samples from its target
imputation model given the observed data. Drawn on the idea of Monte Carlo
integration, the DI estimator solves the mean estimating equations of the
imputed dataset. It is fully efficient with theoretical guarantees. Moreover,
we propose weighted bootstrap to obtain a consistent variance estimator, taking
into account the variabilities due to model parameter estimation and target
parameter estimation. The finite-sample performance of DI inference is assessed
in the simulation study. We apply the proposed framework to an antidepressant
longitudinal clinical trial involving missing data to investigate the
robustness of the treatment effect. Our proposed DI approach detects a
statistically significant treatment effect in both the primary analysis and
sensitivity analysis under certain prespecified sensitivity models in terms of
the average treatment effect, the risk difference, and the quantile treatment
effect in lower quantiles of the responses, uncovering the benefit of the test
drug for curing depression.
|
[{'version': 'v1', 'created': 'Thu, 17 Mar 2022 01:56:42 GMT'}]
|
2022-03-18
|
[array(['Liu', 'Siyi', '', 'Frank'], dtype=object)
array(['Yang', 'Shu', '', 'Frank'], dtype=object)
array(['Zhang', 'Yilong', '', 'Frank'], dtype=object)
array(['Guanghan', '', '', 'Frank'], dtype=object)
array(['Liu', '', ''], dtype=object)]
|
18,607 |
1904.11631
|
Rebecca Martin
|
Rebecca G. Martin and Stephen H. Lubow
|
Polar alignment of a protoplanetary disc around an eccentric binary III:
Effect of disc mass
|
Accepted for publication in MNRAS
| null |
10.1093/mnras/stz2670
| null |
astro-ph.EP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Martin & Lubow (2017) found that an initially sufficiently misaligned low
mass protoplanetary disc around an eccentric binary undergoes damped nodal
oscillations of tilt angle and longitude of ascending node. Dissipation causes
evolution towards a stationary state of polar alignment in which the disc lies
perpendicular to the binary orbital plane with angular momentum aligned to the
eccentricity vector of the binary. We use hydrodynamic simulations and analytic
methods to investigate how the mass of the disc affects this process. The
simulations suggest that a disc with nonzero mass settles into a stationary
state in the frame of the binary, the generalised polar state, at somewhat
lower levels of misalignment with respect to the binary orbital plane, in
agreement with the analytic model. Provided that discs settle into this
generalised polar state, the observational determination of the misalignment
angle and binary properties can be used to determine the mass of a circumbinary
disc. We apply this constraint to the circumbinary disc in HD 98800. We obtain
analytic criteria for polar alignment of a circumbinary ring with mass that
approximately agree with the simulation results. Very broad misaligned discs
undergo breaking, but the inner regions at least may still evolve to a polar
state. The long term evolution of the disc depends on the evolution of the
binary eccentricity that we find tends to decrease. Although the range of
parameters required for polar alignment decreases somewhat with increasing disc
mass, such alignment appears possible for a broad set of initial conditions
expected in protostellar circumbinary discs.
|
[{'version': 'v1', 'created': 'Fri, 26 Apr 2019 00:42:10 GMT'}
{'version': 'v2', 'created': 'Tue, 24 Sep 2019 17:57:53 GMT'}]
|
2019-10-02
|
[array(['Martin', 'Rebecca G.', ''], dtype=object)
array(['Lubow', 'Stephen H.', ''], dtype=object)]
|
18,608 |
2107.00729
|
Ruoyu Wang
|
Ruoyu Wang, Daniel Sun, Guoqiang Li, Raymond Wong, Shiping Chen
|
Essence of Factual Knowledge
|
4 pages, 1 figure
| null | null | null |
cs.DB
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Knowledge bases are collections of domain-specific and commonsense facts.
Recently, the sizes of KBs are rocketing due to automatic extraction for
knowledge and facts. For example, the number of facts in WikiData is up to 974
million! According to our observation, current KBs, especially domain KBs, show
strong relevance in relations according to some topics. These patterns can be
used to conclude and infer for part of facts in the KBs. Therefore, the
original KBs can be minimzed by extracting patterns and essential facts.
|
[{'version': 'v1', 'created': 'Thu, 1 Jul 2021 20:09:56 GMT'}
{'version': 'v2', 'created': 'Mon, 5 Jul 2021 08:50:02 GMT'}
{'version': 'v3', 'created': 'Wed, 20 Oct 2021 09:47:46 GMT'}]
|
2021-10-22
|
[array(['Wang', 'Ruoyu', ''], dtype=object)
array(['Sun', 'Daniel', ''], dtype=object)
array(['Li', 'Guoqiang', ''], dtype=object)
array(['Wong', 'Raymond', ''], dtype=object)
array(['Chen', 'Shiping', ''], dtype=object)]
|
18,609 |
astro-ph/9407030
|
Alberto Bolatto
|
A.D. Bolatto and E.E. Falco
|
The detectability of planetary companions of compact galactic objects
from their effects on microlensed lightcurves of distant stars
|
11 pages, Format: compressed and uuencoded Poscript file (for
recovering the original Poscript file run first "uudecode filename" where
'filename' is the name you gave to the file where you stored this message,
then "uncompress companion.ps.Z". A file named 'companion.ps' will appear. In
case of problem please contact [email protected]), Harvard-Smithsonian Center
for Astrophysics preprint# 3891 (to appear in The Astrophysical Journal of
November 20, 1994)
| null |
10.1086/174885
| null |
astro-ph
| null |
We discuss a possible method for detection of dark companions of galactic
objects of stellar mass. Such binary systems are likely to occur in the
galactic disk and possibly also in the halo. The high incidence of binary and
higher-multiplicity systems in the solar neighborhood, if indicative of the
galactic disk at large, implies that current searches for the gravitational
microlensing signature of massive compact objects in our galaxy would yield a
significant fraction of binary systems. Our calculations suggest that 40% of
the lightcurves that will be obtained in such searches may be sufficiently
perturbed to reveal, if sufficiently well-sampled, the presence of a compact
dark companion of Jovian mass orbiting a primary. The likelihood of occurrence
of perturbed lightcurves must also be taken into account by systematic search
programs, to improve their event detection efficiency. The statistics of
perturbed lensing events, if carefully interpreted, could yield estimates of
the incidence of binary systems with low mass ratios, including that of systems
with planets.
|
[{'version': 'v1', 'created': 'Mon, 11 Jul 1994 18:13:59 GMT'}]
|
2009-10-22
|
[array(['Bolatto', 'A. D.', ''], dtype=object)
array(['Falco', 'E. E.', ''], dtype=object)]
|
18,610 |
2305.01588
|
Anastasiia Koloskova
|
Anastasia Koloskova, Hadrien Hendrikx, Sebastian U. Stich
|
Revisiting Gradient Clipping: Stochastic bias and tight convergence
guarantees
| null | null | null | null |
cs.LG cs.DC math.OC stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Gradient clipping is a popular modification to standard (stochastic) gradient
descent, at every iteration limiting the gradient norm to a certain value $c
>0$. It is widely used for example for stabilizing the training of deep
learning models (Goodfellow et al., 2016), or for enforcing differential
privacy (Abadi et al., 2016). Despite popularity and simplicity of the clipping
mechanism, its convergence guarantees often require specific values of $c$ and
strong noise assumptions.
In this paper, we give convergence guarantees that show precise dependence on
arbitrary clipping thresholds $c$ and show that our guarantees are tight with
both deterministic and stochastic gradients. In particular, we show that (i)
for deterministic gradient descent, the clipping threshold only affects the
higher-order terms of convergence, (ii) in the stochastic setting convergence
to the true optimum cannot be guaranteed under the standard noise assumption,
even under arbitrary small step-sizes. We give matching upper and lower bounds
for convergence of the gradient norm when running clipped SGD, and illustrate
these results with experiments.
|
[{'version': 'v1', 'created': 'Tue, 2 May 2023 16:42:23 GMT'}]
|
2023-05-03
|
[array(['Koloskova', 'Anastasia', ''], dtype=object)
array(['Hendrikx', 'Hadrien', ''], dtype=object)
array(['Stich', 'Sebastian U.', ''], dtype=object)]
|
18,611 |
1905.09058
|
Anke Lindner
|
O. du Roure, A. Lindner, E.N. Nazockdast, M.J. Shelley
|
Dynamics of flexible fibers in viscous flows and fluids
| null |
Annual Review Fluid Mechanics 51 p.539 2019
|
10.1146/annurev-fluid-122316-045153
| null |
physics.flu-dyn cond-mat.soft
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The dynamics and deformations of immersed flexible fibers are at the heart of
important industrial and biological processes, induce peculiar mechanical and
transport properties in the fluids that contain them, and are the basis for
novel methods of flow control. Here we focus on the low Reynolds number regime
where advances in studying these fiber-fluid systems have been especially
rapid. On the experimental side this is due to new methods of fiber synthesis,
microfluidic flow control, and of microscope based tracking measurement
techniques. Likewise, there have been continuous improvements in the
specialized mathematical modeling and numerical methods needed to capture the
interactions of slender flexible fibers with flows, boundaries, and each other.
|
[{'version': 'v1', 'created': 'Wed, 22 May 2019 10:40:37 GMT'}]
|
2019-05-23
|
[array(['Roure', 'O. du', ''], dtype=object)
array(['Lindner', 'A.', ''], dtype=object)
array(['Nazockdast', 'E. N.', ''], dtype=object)
array(['Shelley', 'M. J.', ''], dtype=object)]
|
18,612 |
1709.05256
|
Zhifeng Li
|
Yitong Wang, Xing Ji, Zheng Zhou, Hao Wang, Zhifeng Li
|
Detecting Faces Using Region-based Fully Convolutional Networks
| null | null | null | null |
cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Face detection has achieved great success using the region-based methods. In
this report, we propose a region-based face detector applying deep networks in
a fully convolutional fashion, named Face R-FCN. Based on Region-based Fully
Convolutional Networks (R-FCN), our face detector is more accurate and
computational efficient compared with the previous R-CNN based face detectors.
In our approach, we adopt the fully convolutional Residual Network (ResNet) as
the backbone network. Particularly, We exploit several new techniques including
position-sensitive average pooling, multi-scale training and testing and
on-line hard example mining strategy to improve the detection accuracy. Over
two most popular and challenging face detection benchmarks, FDDB and WIDER
FACE, Face R-FCN achieves superior performance over state-of-the-arts.
|
[{'version': 'v1', 'created': 'Thu, 14 Sep 2017 09:05:54 GMT'}
{'version': 'v2', 'created': 'Mon, 18 Sep 2017 13:44:16 GMT'}]
|
2017-09-19
|
[array(['Wang', 'Yitong', ''], dtype=object)
array(['Ji', 'Xing', ''], dtype=object)
array(['Zhou', 'Zheng', ''], dtype=object)
array(['Wang', 'Hao', ''], dtype=object)
array(['Li', 'Zhifeng', ''], dtype=object)]
|
18,613 |
2110.02589
|
Dachun Yang
|
Xianjie Yan, Ziyi He, Dachun Yang and Wen Yuan
|
Hardy Spaces Associated with Ball Quasi-Banach Function Spaces on Spaces
of Homogeneous Type: Characterizations of Maximal Functions, Decompositions,
and Dual Spaces
| null | null | null | null |
math.FA math.AP math.CA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Let $({\mathcal X},\rho,\mu)$ be a space of homogeneous type in the sense of
Coifman and Weiss, and $Y({\mathcal X})$ a ball quasi-Banach function space on
${\mathcal X}$, which supports a Fefferman--Stein vector-valued maximal
inequality, and the boundedness of the powered Hardy--Littlewood maximal
operator on its associate space. The authors first introduce the Hardy space
$H_{Y}^*({\mathcal X})$, associated with $Y({\mathcal X})$, via the grand
maximal function, and then establish its various real-variable
characterizations, respectively, in terms of radial or non-tangential maximal
functions, atoms or finite atoms, and molecules. As an application, the authors
give the dual space of $H_{Y}^*({\mathcal X})$, which proves to be a ball
Campanato-type function space associated with $Y({\mathcal X})$. All these
results have a wide range of generality and, particularly, even when they are
applied to variable Hardy spaces, the obtained results are also new. The major
novelties of this article exist in that, to escape the reverse doubling
condition of $\mu$ and the triangle inequality of $\rho$, the authors cleverly
construct admissible sequences of balls, and fully use the geometrical
properties of ${\mathcal X}$ expressed by dyadic reference points or dyadic
cubes and, to overcome the difficulty caused by the lack of the good dense
subset of $H_{Y}^*({\mathcal X})$, the authors further prove that $Y({\mathcal
X})$ can be embedded into the weighted Lebesgue space with certain special
weight, and then can fully use the known results of the weighted Lebesgue
space.
|
[{'version': 'v1', 'created': 'Wed, 6 Oct 2021 08:57:29 GMT'}]
|
2021-10-07
|
[array(['Yan', 'Xianjie', ''], dtype=object)
array(['He', 'Ziyi', ''], dtype=object)
array(['Yang', 'Dachun', ''], dtype=object)
array(['Yuan', 'Wen', ''], dtype=object)]
|
18,614 |
1508.07275
|
Luiz Capretz Dr.
|
Ali Bou Nassif, Mohammad Azzeh, Luiz Fernando Capretz, Danny Ho
|
A Comparison Between Decision Trees and Decision Tree Forest Models for
Software Development Effort Estimation
|
3rd International Conference on Communications and Information
Technology (ICCIT), Beirut, Lebanon, pp. 220-224, 2013
| null |
10.1109/ICCITechnology.2013.6579553
| null |
cs.SE cs.AI
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Accurate software effort estimation has been a challenge for many software
practitioners and project managers. Underestimation leads to disruption in the
projects estimated cost and delivery. On the other hand, overestimation causes
outbidding and financial losses in business. Many software estimation models
exist; however, none have been proven to be the best in all situations. In this
paper, a decision tree forest (DTF) model is compared to a traditional decision
tree (DT) model, as well as a multiple linear regression model (MLR). The
evaluation was conducted using ISBSG and Desharnais industrial datasets.
Results show that the DTF model is competitive and can be used as an
alternative in software effort prediction.
|
[{'version': 'v1', 'created': 'Fri, 28 Aug 2015 16:52:21 GMT'}]
|
2015-08-31
|
[array(['Nassif', 'Ali Bou', ''], dtype=object)
array(['Azzeh', 'Mohammad', ''], dtype=object)
array(['Capretz', 'Luiz Fernando', ''], dtype=object)
array(['Ho', 'Danny', ''], dtype=object)]
|
18,615 |
math/0603184
|
Akimichi Takemura
|
Masayuki Kumon, Akimichi Takemura, Kei Takeuchi
|
Game-theoretic versions of strong law of large numbers for unbounded
variables
| null |
Stochastics, 79(5), (2007), 449-468
|
10.1080/17442500701323023
| null |
math.PR
| null |
We consider strong law of large numbers (SLLN) in the framework of
game-theoretic probability of Shafer and Vovk (2001). We prove several versions
of SLLN for the case that Reality's moves are unbounded. Our game-theoretic
versions of SLLN largely correspond to standard measure-theoretic results.
However game-theoretic proofs are different from measure-theoretic ones in the
explicit consideration of various hedges. In measure-theoretic proofs existence
of moments are assumed, whereas in our game-theoretic proofs we assume
availability of various hedges to Skeptic for finite prices.
|
[{'version': 'v1', 'created': 'Wed, 8 Mar 2006 13:02:21 GMT'}]
|
2007-08-27
|
[array(['Kumon', 'Masayuki', ''], dtype=object)
array(['Takemura', 'Akimichi', ''], dtype=object)
array(['Takeuchi', 'Kei', ''], dtype=object)]
|
18,616 |
cond-mat/0502392
|
Shiyong Liu
|
S. Y. Liu and X. L. Lei
|
Vanishing of the Dissipationless Spin Hall Effect in a Diffusive
Two-Dimensional Electron Gas with Spin-Orbit Coupling
|
5 pages, 1 figure
| null | null | null |
cond-mat.mtrl-sci cond-mat.mes-hall
| null |
We propose a nonequilibrium Green's function approach to study the spin-Hall
effect in a two-dimensional electron system with both the Rashba and
Dresselhaus spin-orbit couplings. By taking into account the long-range
electron-impurity scattering, the derived kinetic equations are solved
numerically. It is found the vanishing of the total zero-temperature
dissipationless spin-Hall effect, contributing from the intrinsic and
disorder-mediated processes. This result has been examined in the wide ranges
of spin-orbit coupling constants and electron density.
|
[{'version': 'v1', 'created': 'Wed, 16 Feb 2005 13:30:56 GMT'}]
|
2007-05-23
|
[array(['Liu', 'S. Y.', ''], dtype=object)
array(['Lei', 'X. L.', ''], dtype=object)]
|
18,617 |
1910.09593
|
Adan Medrano Martin del Campo
|
Ad\'an Medrano Mart\'in del Campo
|
Monodromy of the family of cubic surfaces branching over smooth cubic
curves
|
Final version, to appear in Annales de l'Institut Fourier. Link to
computation repository included. 17 pages, 6 figures
| null | null | null |
math.AG math.AT math.GT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Consider the family of smooth cubic surfaces which can be realized as
threefold-branched covers of $\mathbb{P}^{2}$, with branch locus equal to a
smooth cubic curve. This family is parametrized by the space $\mathcal{U}_{3}$
of smooth cubic curves in $\mathbb{P}^{2}$ and each surface is equipped with a
$\mathbb{Z}/3\mathbb{Z}$ deck group action.
We compute the image of the monodromy map $\rho$ induced by the action of
$\pi_{1}\left(\mathcal{U}_{3}\right)$ on the $27$ lines contained on the cubic
surfaces of this family. Due to a classical result, this image is contained in
the Weyl group $W\left(E_{6}\right)$. Our main result is that $\rho$ is
surjective onto the centralizer of the image a of a generator of the deck
group. Our proof is mainly computational, and relies on the relation between
the $9$ inflection points in a cubic curve and the $27$ lines contained in the
cubic surface branching over it.
|
[{'version': 'v1', 'created': 'Mon, 21 Oct 2019 18:34:45 GMT'}
{'version': 'v2', 'created': 'Thu, 13 May 2021 21:27:47 GMT'}]
|
2021-05-17
|
[array(['del Campo', 'Adán Medrano Martín', ''], dtype=object)]
|
18,618 |
1912.11586
|
Koun Shirai
|
Takayoshi Fujimura and Koun Shirai
|
Revisiting the stable structure of the Cu$_{4}$ complex in silicon
| null | null |
10.35848/1347-4065/abd495
| null |
cond-mat.mtrl-sci
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The photoluminescence (PL) spectrum of Cu-containing silicon has a sharp
zero-phonon (ZP) band at 1.014 eV. The luminescence center corresponding to
this band is called Cu$_{PL}$ and is known to have the local $C_{3v}$ symmetry.
A recent measurement by ultrahigh-resolution PL spectroscopy revealed that the
Cu$_{PL}$ center is a Cu$_{4}$ complex. Later, it was shown, by
first-principles calculations, that the structure was Cu$_{(s)}$Cu$_{3(i)}$,
that is, a complex composed of three interstitial Cu$_{(i)}$ atoms around a
substitutional Cu$_{(s)}$ atom. This complex (called $C$-type) has the desired
symmetry. However, in this study, we show that the lowest-energy structure is
different. The tetrahedral structure Cu$_{4}$, called $T$-type, has the lowest
energy, with the value being 0.26 eV lower than that of $C$-type. Between these
two types, there is an energy barrier of 0.14 eV, which allows $C$-type to
exist in a metastable state. Details of the electronic properties of the
$T$-type complex are given, by comparing with $C$-type and other isovalent
complexes such as Li$_{4}$. Whereas the Cu$_{4}$ tetrahedron is incorporated in
silicon in a manner compatible with the tetrahedral network, it also has its
own molecular orbitals that exhibit metallic characteristics, in contrast to
other complexes. The ZP of the PL spectrum is very likely ascribed to the
backflow mode of the Cu$_{4}$ tetrahedron.
|
[{'version': 'v1', 'created': 'Wed, 25 Dec 2019 03:44:43 GMT'}
{'version': 'v2', 'created': 'Mon, 6 Jan 2020 06:44:31 GMT'}
{'version': 'v3', 'created': 'Fri, 27 Mar 2020 04:42:16 GMT'}
{'version': 'v4', 'created': 'Thu, 14 May 2020 07:09:31 GMT'}]
|
2022-01-05
|
[array(['Fujimura', 'Takayoshi', ''], dtype=object)
array(['Shirai', 'Koun', ''], dtype=object)]
|
18,619 |
hep-ph/9705322
|
Ingo Schienbein
|
I. Schienbein
|
Leading log radiative corrections to deep inelastic production of heavy
quarks
|
minor changes, revised version to appear in Z Phys. C, 25 pages,
LaTeX, 13 figures, epsfig.sty
|
Eur.Phys.J.C2:675-682,1998
|
10.1007/s100520050170
|
DO-TH 97/09
|
hep-ph
| null |
O(\alpha) QED radiative corrections to neutral current deep inelastic
production of heavy quarks are calculated in the leading log approximation and
compared with the corresponding corrections assuming a massless charm parton.
Besides the inclusive case, corrections to the semi-inclusive d^3\sigma/dx dy
dz and the effect of z-cuts are studied. In the latter case, the massless
corrections differ from the correct massive radiative corrections to deep
inelastic heavy quark production by about 40%-10% for 0.2\lesssim z \lesssim
0.5.
|
[{'version': 'v1', 'created': 'Thu, 15 May 1997 09:50:19 GMT'}
{'version': 'v2', 'created': 'Thu, 10 Jul 1997 11:43:09 GMT'}]
|
2011-09-13
|
[array(['Schienbein', 'I.', ''], dtype=object)]
|
18,620 |
gr-qc/9912021
|
Roustam M. Zalaletdinov
|
Roustam Zalaletdinov (International Center for Relativistic
Astrophysics, Universit\'a di Roma "La Sapienza", Roma and Department of
Theoretical Physics, Institute of Nuclear Physics, Tashkent)
|
Approximate Symmetries in General Relativity
|
15 pages, LaTeX, extended version (including a review on the subject)
of the paper "Approximate Symmetries, Inhomogeneous Spaces and Gravitational
Entropy", to appear in Proc. of the Second ICRA Network Workshop "The Chaotic
Universe", eds. V. Gurzadyan and R. Ruffini (World Scientific, Singapore,
2000)
|
Proc. of the 2nd ICRA Network Workshop "The Chaotic Universe",
Rome-Pescara, February 1999, eds. V. Gurzadyan and R. Ruffini (World
Scientific, Singapore, 2000), p. 619635
| null | null |
gr-qc
| null |
The problem of finding an appropriate geometrical/physical index for
measuring a degree of inhomogeneity for a given space-time manifold is posed.
Interrelations with the problem of understanding the
gravitational/informational entropy are pointed out. An approach based on the
notion of approximate symmetry is proposed. A number of related results on
definitions of approximate symmetries known from literature are briefly
reviewed with emphasis on their geometrical/physical content. A definition of a
Killing-like symmetry is given and a classification theorem for all possible
averaged space-times acquiring Killing-like symmetries upon averaging out a
space-time with a homothetic Killing symmetry is proved.
|
[{'version': 'v1', 'created': 'Tue, 7 Dec 1999 14:00:59 GMT'}]
|
2007-05-23
|
[array(['Zalaletdinov', 'Roustam', '',
'International Center for Relativistic\n Astrophysics, Universitá di Roma "La Sapienza", Roma and Department of\n Theoretical Physics, Institute of Nuclear Physics, Tashkent'],
dtype=object) ]
|
18,621 |
hep-th/9305054
| null |
Arlen Anderson
|
Canonical Transformations in Quantum Mechanics
|
43 pages, LaTeX, McGill Univ. 92-29, Imperial-TP-92-93-31,
NSF-ITP-93-61
|
Annals Phys. 232 (1994) 292-331
|
10.1006/aphy.1994.1055
| null |
hep-th gr-qc
| null |
Quantum canonical transformations are defined algebraically outside of a
Hilbert space context. This generalizes the quantum canonical transformations
of Weyl and Dirac to include non-unitary transformations. The importance of
non-unitary transformations for constructing solutions of the Schr\"odinger
equation is discussed. Three elementary canonical transformations are shown
both to have quantum implementations as finite transformations and to generate,
classically and infinitesimally, the full canonical algebra. A general
canonical transformation can be realized quantum mechanically as a product of
these transformations. Each transformation corresponds to a familiar tool used
in solving differential equations, and the procedure of solving a differential
equation is systematized by the use of the canonical transformations. Several
examples are done to illustrate the use of the canonical transformations. [This
is an extensively revised version of hep-th-9205080: the first third of the
paper is new material; the notation has been simplified, and further discussion
has been added to the remainder.]
|
[{'version': 'v1', 'created': 'Thu, 13 May 1993 07:21:49 GMT'}]
|
2009-10-22
|
[array(['Anderson', 'Arlen', ''], dtype=object)]
|
18,622 |
1705.05122
|
Lie-Wen Chen
|
Rui Wang, Lie-Wen Chen
|
Empirical information on nuclear matter fourth-order symmetry energy
from an extended nuclear mass formula
|
7 pages, 1 figure. Presentation improved and discussions added.
Accepted version to appear in PLB
|
Phys. Lett. B 773: 62-67, 2017
|
10.1016/j.physletb.2017.08.007
| null |
nucl-th astro-ph.SR nucl-ex
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We establish a relation between the equation of state (EOS) of nuclear matter
and the fourth-order symmetry energy $a_{\rm{sym,4}}(A)$ of finite nuclei in a
semi-empirical nuclear mass formula by self-consistently considering the bulk,
surface and Coulomb contributions to the nuclear mass. Such a relation allows
us to extract information on nuclear matter fourth-order symmetry energy
$E_{\rm{sym,4}}(\rho_0)$ at normal nuclear density $\rho_0$ from analyzing
nuclear mass data. Based on the recent precise extraction of
$a_{\rm{sym,4}}(A)$ via the double difference of the "experimental" symmetry
energy extracted from nuclear masses, for the first time, we estimate a value
of $E_{\rm{sym,4}}(\rho_0) = 20.0\pm4.6$ MeV. Such a value of
$E_{\rm{sym,4}}(\rho_0)$ is significantly larger than the predictions from
mean-field models and thus suggests the importance of considering the effects
of beyond the mean-field approximation in nuclear matter calculations.
|
[{'version': 'v1', 'created': 'Mon, 15 May 2017 09:09:01 GMT'}
{'version': 'v2', 'created': 'Sat, 5 Aug 2017 03:15:24 GMT'}]
|
2019-02-01
|
[array(['Wang', 'Rui', ''], dtype=object)
array(['Chen', 'Lie-Wen', ''], dtype=object)]
|
18,623 |
1412.5998
|
Mattias Marklund
|
A. Gonoskov, C. Harvey, A. Ilderton, F. Mackenroth, M. Marklund
|
Lighting up the Christmas tree: high-intensity laser interactions with a
nano-structured target
|
3 pages, 4 figures
| null | null | null |
physics.pop-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We perform a numerical study of the interaction of a high-intensity laser
pulse with a nano-structured target. In particular, we study a target where the
nano-structuring increases the absorption rate as compared to the flat target
case. The transport of electrons within the target, and in particular in the
nano-structure, is analysed. It is shown that it is indeed possible, using a
terawatt class laser, to light up a nano-scale Christmas tree. Due to the form
of the tree we achieve very strong edge fields, in particular at the top where
the star is located. Such edge fields, as here located at ion rich spots, makes
strong acceleration gradients possible. It also results in a nice, warm glow
suitable for the holiday season.
|
[{'version': 'v1', 'created': 'Wed, 17 Dec 2014 11:04:59 GMT'}]
|
2014-12-19
|
[array(['Gonoskov', 'A.', ''], dtype=object)
array(['Harvey', 'C.', ''], dtype=object)
array(['Ilderton', 'A.', ''], dtype=object)
array(['Mackenroth', 'F.', ''], dtype=object)
array(['Marklund', 'M.', ''], dtype=object)]
|
18,624 |
2302.06728
|
Brian Freno
|
Brian A. Freno, Neil R. Matula
|
Code-Verification Techniques for the Method-of-Moments Implementation of
the Combined-Field Integral Equation
|
arXiv admin note: substantial text overlap with arXiv:2209.09378
|
Journal of Computational Physics, 488 (2023)
|
10.1016/j.jcp.2023.112231
| null |
physics.comp-ph cs.NA math.NA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Code verification plays an important role in establishing the credibility of
computational simulations by assessing the correctness of the implementation of
the underlying numerical methods. In computational electromagnetics, the
numerical solution to integral equations incurs multiple interacting sources of
numerical error, as well as other challenges, which render traditional
code-verification approaches ineffective. In this paper, we provide approaches
to separately measure the numerical errors arising from these different error
sources for the method-of-moments implementation of the combined-field integral
equation. We demonstrate the effectiveness of these approaches for cases with
and without coding errors.
|
[{'version': 'v1', 'created': 'Mon, 13 Feb 2023 22:32:38 GMT'}
{'version': 'v2', 'created': 'Thu, 11 May 2023 15:15:13 GMT'}
{'version': 'v3', 'created': 'Wed, 24 May 2023 01:04:31 GMT'}]
|
2023-06-05
|
[array(['Freno', 'Brian A.', ''], dtype=object)
array(['Matula', 'Neil R.', ''], dtype=object)]
|
18,625 |
cond-mat/0103456
|
Jian-Xin Li
|
Jian-Xin Li and Chang-De Gong
|
Doping dependence of the resonance peak and incommensuration in
high-$T_{c}$ superconductors
|
5 pages, 4 PS figures
|
frafc Phys. Rev. B 66, (2002) 014506
|
10.1103/PhysRevB.66.014506
| null |
cond-mat.supr-con cond-mat.str-el
| null |
The doping and frequency evolutions of the incommensurate spin response and
the resonance mode are studied based on the scenario of the Fermi surface
topology. We use the slave-boson mean-field approach to the $t-t^{\prime}-J$
model and including the antiferromagnetic fluctuation correction in the
random-phase approximation. We find that the equality between the
incommensurability and the hole concentration is reproduced at low frequencies
in the underdoped regime. This equality observed in experiments was explained
{\it only} based on the stripe model before. We also obtain the downward
dispersion for the spin response and predict its doping dependence for further
experimental testing, as well as a proportionality between the low-energy
incommensurability and the resonance energy. Our results suggest a common
origin for the incommensuration and the resonance peak based on the Fermi
surface topology and the d-wave symmetry.
|
[{'version': 'v1', 'created': 'Thu, 22 Mar 2001 07:30:51 GMT'}]
|
2009-11-07
|
[array(['Li', 'Jian-Xin', ''], dtype=object)
array(['Gong', 'Chang-De', ''], dtype=object)]
|
18,626 |
astro-ph/0511198
|
Alberto Vallinotto
|
Edward W. Kolb, Antonio Riotto, Alberto Vallinotto
|
Non-Gaussianity from Broken Symmetries
|
7 pages, 1 figure
|
Phys.Rev.D73:023522,2006
|
10.1103/PhysRevD.73.023522
|
FERMILAB-PUB-05-498-A
|
astro-ph hep-ph hep-th
| null |
Recently we studied inflation models in which the inflaton potential is
characterized by an underlying approximate global symmetry. In the first work
we pointed out that in such a model curvature perturbations are generated after
the end of the slow-roll phase of inflation. In this work we develop further
the observational implications of the model and compute the degree of
non-Gaussianity predicted in the scenario. We find that the corresponding
nonlinearity parameter, $f_{NL}$, can be as large as 10^2.
|
[{'version': 'v1', 'created': 'Mon, 7 Nov 2005 21:01:08 GMT'}]
|
2008-11-26
|
[array(['Kolb', 'Edward W.', ''], dtype=object)
array(['Riotto', 'Antonio', ''], dtype=object)
array(['Vallinotto', 'Alberto', ''], dtype=object)]
|
18,627 |
cond-mat/0207366
|
Andrea Capocci
|
G. Caldarelli, A. Capocci, P. De Los Rios, M.A. Munoz
|
Scale-free Networks without Growth or Preferential Attachment: Good get
Richer
|
4 pages, 4 figures, revtex. Accepted for publication. Minor
corrections added
| null | null | null |
cond-mat.dis-nn
| null |
A new mechanism leading to scale-free networks is proposed in this letter. It
is shown that in many cases of interest, the connectivity power-law behavior is
neither related to dynamical properties nor to preferential attachment.
Instead, we show that without increasing the number of vertices in time and
without applying the so called {\it ``rich-get-richer''} condition we obtain
networks whose statistical properties are scale-free. Assigning a quenched
fitness value $x_i$ to every vertex, and drawing links among vertices with a
probability depending on the fitnesses of the two involved sites, gives rise to
what we call a {\it ``good-get-richer''} mechanism, in which sites with larger
fitness are more likely to become hubs (i.e., to be highly connected). This
procedure generates power-law behaviors for various fitness distributions and
attaching rules.
|
[{'version': 'v1', 'created': 'Mon, 15 Jul 2002 16:20:31 GMT'}
{'version': 'v2', 'created': 'Mon, 28 Oct 2002 15:51:16 GMT'}]
|
2007-05-23
|
[array(['Caldarelli', 'G.', ''], dtype=object)
array(['Capocci', 'A.', ''], dtype=object)
array(['Rios', 'P. De Los', ''], dtype=object)
array(['Munoz', 'M. A.', ''], dtype=object)]
|
18,628 |
gr-qc/9707053
|
Thomas Kloesch
|
T. Kloesch and T. Strobl
|
A Global View of Kinks in 1+1 Gravity
|
20 pages, 12 figures, uses amssymb
|
Phys.Rev. D57 (1998) 1034-1044
|
10.1103/PhysRevD.57.1034
|
TUW-97-13, PITHA-96/24
|
gr-qc hep-th
| null |
Following Finkelstein and Misner, kinks are non-trivial field configurations
of a field theory, and different kink-numbers correspond to different
disconnected components of the space of allowed field configurations for a
given topology of the base manifold. In a theory of gravity, non-vanishing
kink-numbers are associated to a twisted causal structure. In two dimensions
this means, more specifically, that the light-cone tilts around (non-trivially)
when going along a non-contractible non-selfintersecting loop on spacetime. One
purpose of this paper is to construct the maximal extensions of kink spacetimes
using Penrose diagrams. This will yield surprising insights into their geometry
but also allow us to give generalizations of some well-known examples like the
bare kink and the Misner torus. However, even for an arbitrary 2D metric with a
Killing field we can construct continuous one-parameter families of
inequivalent kinks. This result has already interesting implications in the
flat or deSitter case, but it applies e.g. also to generalized dilaton gravity
solutions. Finally, several coordinate systems for these newly obtained kinks
are discussed.
|
[{'version': 'v1', 'created': 'Fri, 25 Jul 1997 11:27:36 GMT'}]
|
2009-10-30
|
[array(['Kloesch', 'T.', ''], dtype=object)
array(['Strobl', 'T.', ''], dtype=object)]
|
18,629 |
2003.11301
|
Sergei Ipatov
|
S. I. Ipatov
|
Probabilities of collisions of planetesimals from different regions of
the feeding zone of the terrestrial planets with the forming planets and the
Moon
|
30 pages
|
Solar System Research, 2019, v. 53, N 5, p. 332-361
|
10.1134/S0038094619050046
| null |
astro-ph.EP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Migration of planetesimals from the feeding zone of the terrestrial planets,
which was divided into seven regions depending on the distance to the Sun, was
simulated. The influence of gravity of all planets was taken into account. In
some cases, the embryos of the terrestrial planets rather than the planets
themselves were considered; their masses were assumed to be 0.1 or 0.3 of the
current masses of the planets. The arrays of orbital elements of migrated
planetesimals were used to calculate the probabilities of their collisions with
the planets, the Moon, or their embryos. Based on our calculations, we drew
conclusions on the process of accumulation of the terrestrial planets. The
embryos of the terrestrial planets, the masses of which did not exceed a tenth
of the current planetary masses, accumulated planetesimals mainly from the
vicinity of their orbits. When planetesimals fell onto the embryos of the
terrestrial planets from the feeding zone of Jupiter and Saturn, these embryos
had not yet acquired the current masses of the planets, and the material of
this zone (including water and volatiles) could be accumulated in the inner
layers of the terrestrial planets. The inner layers of each of the terrestrial
planets were mainly formed from the material located in the vicinity of the
orbit of a certain planet. The outer layers of the Earth and Venus could
accumulate the same material for these two planets from different parts of the
feeding zone of the terrestrial planets. The Earth and Venus could acquire more
than half of their masses in 5 Myr. A relatively rapid growth of the bulk of
the Martian mass can be explained by the formation of Mars' embryo (the mass of
which is several times less than that of Mars) due to contraction of a rarefied
condensation.
|
[{'version': 'v1', 'created': 'Wed, 25 Mar 2020 10:16:58 GMT'}]
|
2020-03-26
|
[array(['Ipatov', 'S. I.', ''], dtype=object)]
|
18,630 |
cond-mat/9706299
|
Mccmmdf
|
D.J.J. Farnell, S.E. Krueger and J.B. Parkinson
|
Coupled Cluster Treatment of the XY model
|
11 pages, Latex, 4 postscript figure, accepted by J.Phys.: Condens.
Matter
| null |
10.1088/0953-8984/9/36/008
| null |
cond-mat
| null |
We study quantum spin systems in the 1D, 2D square and 3D cubic lattices with
nearest-neighbour XY exchange. We use the coupled-cluster method (CCM) to
calculate the ground-state energy, the T=0 sublattice magnetisation and the
excited state energies, all as functions of the anisotropy parameter $\gamma$.
We consider $S=1/2$ in detail and give some results for higher $S$. In 1D these
results are compared with the exact $S=1/2$ results and in 2D with Monte-Carlo
and series expansions. We obtain critical points close to the expected value
$\gamma=0$ and our extrapolated LSUBn results for the ground-state energy are
well converged for all $\gamma$ except very close to the critical point.
|
[{'version': 'v1', 'created': 'Mon, 30 Jun 1997 13:46:56 GMT'}]
|
2009-10-30
|
[array(['Farnell', 'D. J. J.', ''], dtype=object)
array(['Krueger', 'S. E.', ''], dtype=object)
array(['Parkinson', 'J. B.', ''], dtype=object)]
|
18,631 |
2001.11396
|
Matthew Willetts
|
Miguel Morin, Matthew Willetts
|
Non-Determinism in TensorFlow ResNets
|
4 pages
| null | null | null |
cs.LG cs.NE stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We show that the stochasticity in training ResNets for image classification
on GPUs in TensorFlow is dominated by the non-determinism from GPUs, rather
than by the initialisation of the weights and biases of the network or by the
sequence of minibatches given. The standard deviation of test set accuracy is
0.02 with fixed seeds, compared to 0.027 with different seeds---nearly 74\% of
the standard deviation of a ResNet model is non-deterministic. For test set
loss the ratio of standard deviations is more than 80\%. These results call for
more robust evaluation strategies of deep learning models, as a significant
amount of the variation in results across runs can arise simply from GPU
randomness.
|
[{'version': 'v1', 'created': 'Thu, 30 Jan 2020 15:29:13 GMT'}]
|
2020-01-31
|
[array(['Morin', 'Miguel', ''], dtype=object)
array(['Willetts', 'Matthew', ''], dtype=object)]
|
18,632 |
1601.07101
|
Raja Naeem Akram
|
Raja Naeem Akram, Iakovos Gurulian, Carlton Shepherd, Konstantinos
Markantonakis, Keith Mayes
|
Empirical Evaluation of Ambient Sensors as Proximity Detection Mechanism
for Mobile Payments
|
19 pages, 9 figures, 5 tables
| null | null | null |
cs.CR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Near Field Communication (NFC) has enabled mobile phones to emulate
contactless smart cards. Similar to contactless smart cards, they are also
susceptible to relay attacks. To counter these, a number of methods have been
proposed that rely primarily on ambient sensors as a proximity detection
mechanism (also known as an anti-relay mechanism). In this paper, we, for the
first time in academic literature, empirically evaluate a comprehensive set of
ambient sensors for their effectiveness as a proximity detection mechanism. We
selected 15 out of a total of 17 sensors available via the Google Android
platform for evaluation, with the other two sensors unavailable on widely-used
handsets. In existing academic literature, only 5 sensors have been proposed
with positive results as a potential proximity detection mechanism. Each
sensor, where feasible, was used to record the measurements of 1000 contactless
transactions at four different physical locations. A total of 252 random users,
random sample of the university student population, were involved during the
field trails. The analysis of these transactions provides an empirical
foundation to categorically answer whether ambient sensors provide a strong
proximity detection mechanism for security sensitive applications like banking,
transport and high-security access control. After careful analysis, we conclude
that no single evaluated mobile ambient sensor is suitable for such critical
applications in realistic deployment scenarios. Lastly, we identify a number of
potential avenues that may improve their effectiveness.
|
[{'version': 'v1', 'created': 'Tue, 26 Jan 2016 17:16:40 GMT'}
{'version': 'v2', 'created': 'Thu, 18 Feb 2016 23:20:25 GMT'}]
|
2016-02-22
|
[array(['Akram', 'Raja Naeem', ''], dtype=object)
array(['Gurulian', 'Iakovos', ''], dtype=object)
array(['Shepherd', 'Carlton', ''], dtype=object)
array(['Markantonakis', 'Konstantinos', ''], dtype=object)
array(['Mayes', 'Keith', ''], dtype=object)]
|
18,633 |
1810.03556
|
Alexander Pirker
|
A. Pirker, W. D\"ur
|
A quantum network stack and protocols for reliable entanglement-based
networks
|
19 + 5 pages, 11 + 7 figures, replaced with accepted version
|
New J. Phys. 21 033003 (2019)
|
10.1088/1367-2630/ab05f7
| null |
quant-ph cs.NI
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present a stack model for breaking down the complexity of
entanglement-based quantum networks. More specifically, we focus on the
structures and architectures of quantum networks and not on concrete physical
implementations of network elements. We construct the quantum network stack in
a hierarchical manner comprising several layers, similar to the classical
network stack, and identify quantum networking devices operating on each of
these layers. The layers responsibilities range from establishing
point-to-point connectivity, over intra-network graph state generation, to
inter-network routing of entanglement. In addition we propose several protocols
operating on these layers. In particular, we extend the existing intra-network
protocols for generating arbitrary graph states to ensure reliability inside a
quantum network, where here reliability refers to the capability to compensate
for devices failures. Furthermore, we propose a routing protocol for quantum
routers which enables to generate arbitrary graph states across network
boundaries. This protocol, in correspondence with classical routing protocols,
can compensate dynamically for failures of routers, or even complete networks,
by simply re-routing the given entanglement over alternative paths. We also
consider how to connect quantum routers in a hierarchical manner to reduce
complexity, as well as reliability issues arising in connecting these quantum
networking devices.
|
[{'version': 'v1', 'created': 'Mon, 8 Oct 2018 16:14:46 GMT'}
{'version': 'v2', 'created': 'Mon, 25 Mar 2019 19:08:04 GMT'}]
|
2019-03-27
|
[array(['Pirker', 'A.', ''], dtype=object)
array(['Dür', 'W.', ''], dtype=object)]
|
18,634 |
2212.11903
|
Em\'ilia Valen\c{c}a Ferreira de Arag\~ao
|
Em\'ilia Valen\c{c}a Ferreira de Arag\~ao, Luca Mancini, Xiao He,
Noelia Faginas-Lago, Marzio Rosi, Daniela Ascenzi, Fernando Pirani
|
Coding Cross Sections of an Electron Charge Transfer Process
|
16 pages, 5 figures. Preprint version submitted to LNCS (Springer)
ICCSA2022. The final authenticated version is available online at
https://doi.org/10.1007/978-3-031-10592-0_24
|
ICCSA 2022. Lecture Notes in Computer Science, vol 13382, p.
319-333. Springer, Cham, 2022
|
10.1007/978-3-031-10592-0_24
| null |
physics.chem-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The paper presents the algorithm of a code written for computing the cross
section for a charge transfer process involving a neutral molecule and a
monatomic ion. The entrance and exit potential energy surfaces, driving the
collision dynamics, are computed employing the Improved Lennard-Jones function
that accounts for the role of non-electrostatic forces, due to size repulsion
plus dispersion and induction attraction. In addition, electrostatic
components, affecting the entrance channels, are evaluated as sum of Coulomb
contributions, determined by the He$^+$ ion interacting with the charge
distribution on the molecular frame. The cross section is estimated by
employing the Landau-Zener-St\"uckelberg approach. The code implemented has
been employed in systems involving helium cation and a small organic molecule,
such as methanol, dimethyl ether and methyl formate.
|
[{'version': 'v1', 'created': 'Thu, 22 Dec 2022 17:43:38 GMT'}]
|
2022-12-23
|
[array(['de Aragão', 'Emília Valença Ferreira', ''], dtype=object)
array(['Mancini', 'Luca', ''], dtype=object)
array(['He', 'Xiao', ''], dtype=object)
array(['Faginas-Lago', 'Noelia', ''], dtype=object)
array(['Rosi', 'Marzio', ''], dtype=object)
array(['Ascenzi', 'Daniela', ''], dtype=object)
array(['Pirani', 'Fernando', ''], dtype=object)]
|
18,635 |
1910.03623
|
Eilidh McKemmie
|
Eilidh McKemmie
|
Invariable generation of finite classical groups
|
22 pages
| null |
10.1016/j.jalgebra.2021.06.020
| null |
math.GR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A subset of a group invariably generates the group if it generates even when
we replace the elements by any of their conjugates. In a 2016 paper, Pemantle,
Peres and Rivin show that the probability that four randomly selected elements
invariably generate $S_n$ is bounded away from zero by an absolute constant for
all $n$. Subsequently, Eberhard, Ford and Green have shown that the probability
that three randomly selected elements invariably generate $S_n$ tends to zero
as $n \rightarrow \infty$. In this paper, we prove an analogous result for the
finite classical groups. More precisely, let $G_r(q)$ be a finite classical
group of rank $r$ over $\mathbb{F}_q$. We show that for $q$ large enough, the
probability that four randomly selected elements invariably generate $G_r(q)$
is bounded away from zero by an absolute constant for all $r$, and for three
elements the probability tends to zero as $q \rightarrow \infty$ and $r
\rightarrow \infty$. We use the fact that most elements in $G_r(q)$ are
separable and the well-known correspondence between classes of maximal tori
containing separable elements in classical groups and conjugacy classes in
their Weyl groups.
|
[{'version': 'v1', 'created': 'Tue, 8 Oct 2019 18:16:18 GMT'}
{'version': 'v2', 'created': 'Sat, 3 Oct 2020 07:05:30 GMT'}
{'version': 'v3', 'created': 'Wed, 23 Jun 2021 17:50:11 GMT'}]
|
2023-06-05
|
[array(['McKemmie', 'Eilidh', ''], dtype=object)]
|
18,636 |
2005.14272
|
Elton S. Smith
|
S. Adhikari, C.S.Akondi, H.Al Ghoul, A. Ali, M. Amaryan, E.G.
Anassontzis, A.Austregesilo, F. Barbosa, J. Barlow, A. Barnes, E. Barriga, R.
Barsotti, T.D. Beattie, J. Benesch, V.V. Berdnikov, G. Biallas, T. Black, W.
Boeglin, P. Brindza, W.J. Briscoe, T. Britton, J. Brock, W.K. Brooks, B.E.
Cannon, C. Carlin, D.S. Carman, T. Carstens, N. Cao, O. Chernyshov, E.
Chudakov, S. Cole, O. Cortes, W.D. Crahen, V. Crede, M.M. Dalton, T. Daniels,
A. Deur, C. Dickover, S. Dobbs, A. Dolgolenko, R. Dotel, M. Dugger, R.
Dzhygadlo, A. Dzierba, H. Egiyan, T. Erbora, A. Ernst, P. Eugenio, C.
Fanelli, S. Fegan, A.M. Foda, J. Foote, J. Frye, S. Furletov, L. Gan, A.
Gasparian, A. Gerasimov, N. Gevorgyan, C. Gleason, K. Goetzen, A. Goncalves
V.S. Goryachev, L. Guo, H. Hakobyan, A. Hamdi, J. Hardin, C.L. Henschel, G.M.
Huber, C. Hutton, A. Hurley, P. Ioannou, D.G. Ireland, M.M. Ito, N.S. Jarvis,
R.T. Jones, V. Kakoyan, S. Katsaganis, G. Kalicy, M. Kamel, C.D. Keith, F.J.
Klein, R. Kliemt, D. Kolybaba, C. Kourkoumelis, S.T. Krueger, S. Kuleshov, I.
Larin, D. Lawrence, J.P. Leckey, D.I. Lersch, B.D. Leverington, W.I. Levine,
W. Li, B. Liu, K. Livingston, G.J. Lolos, V. Lyubovitskij, D. Mack, H.
Marukyan, P.T. Mattione, V. Matveev, M. McCaughan, M. McCracken, W. McGinley,
J. McIntyre, D. Meekins, R. Mendez, C.A. Meyer, R. Miskimen, R.E. Mitchell,
F. Mokaya, K. Moriya, F. Nerling, L. Ng, H. Ni, A.I. Ostrovidov, Z.
Papandreou, M. Patsyuk, C. Paudel, P. Pauli, R. Pedroni, L. Pentchev, K.J.
Peters, W. Phelps, J. Pierce, E. Pooser, V. Popov, B. Pratt, Y. Qiang, N.
Qin, V. Razmyslovich, J. Reinhold, B.G. Ritchie, J. Ritman, L. Robison, D.
Romanov, C. Romero, C. Salgado, N. Sandoval, T. Satogata, A.M. Schertz, S.
Schadmand, A. Schick, R.A. Schumacher, C. Schwarz, J. Schwiening, A.Yu.
Semenov, I.A. Semenova, K.K. Seth, X. Shen, M.R. Shepherd, E.S. Smith, D.I.
Sober, A. Somov, S. Somov, O. Soto, N. Sparks, M.J. Staib, C. Stanislav, J.R.
Stevens, J. Stewart, I.I. Strakovsky, B.C.L. Summner, K. Suresh, V.V.
Tarasov, S. Taylor, L.A. Teigrob, A. Teymurazyan, A. Thiel, I. Tolstukhin, A.
Tomaradze, A. Toro, A. Tsaris, Y. Van Haarlem, G. Vasileiadis, I. Vega, G.
Visser, G. Voulgaris, N.K. Walford, D. Werthm\"uller, T. Whitlatch, N.
Wickramaarachchi, M. Williams, E. Wolin, T. Xiao, Y. Yang, J. Zarling, Z.
Zhang, Q. Zhou, X. Zhou, B. Zihlmann
|
The GlueX Beamline and Detector
|
Accepted by Nuclear Instruments and Methods A, 78 pages, 54 figures
|
Nucl. Instrum. & Meth. A987, 164807 (2021)
|
10.1016/j.nima.2020.164807
|
JLAB-PHY-20-3195
|
physics.ins-det nucl-ex
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The GlueX experiment at Jefferson Lab has been designed to study
photoproduction reactions with a 9-GeV linearly polarized photon beam. The
energy and arrival time of beam photons are tagged using a scintillator
hodoscope and a scintillating fiber array. The photon flux is determined using
a pair spectrometer, while the linear polarization of the photon beam is
determined using a polarimeter based on triplet photoproduction.
Charged-particle tracks from interactions in the central target are analyzed in
a solenoidal field using a central straw-tube drift chamber and six packages of
planar chambers with cathode strips and drift wires. Electromagnetic showers
are reconstructed in a cylindrical scintillating fiber calorimeter inside the
magnet and a lead-glass array downstream. Charged particle identification is
achieved by measuring energy loss in the wire chambers and using the flight
time of particles between the target and detectors outside the magnet. The
signals from all detectors are recorded with flash ADCs and/or pipeline TDCs
into memories allowing trigger decisions with a latency of 3.3 $\mu$s. The
detector operates routinely at trigger rates of 40 kHz and data rates of 600
megabytes per second. We describe the photon beam, the GlueX detector
components, electronics, data-acquisition and monitoring systems, and the
performance of the experiment during the first three years of operation.
|
[{'version': 'v1', 'created': 'Thu, 28 May 2020 20:18:19 GMT'}
{'version': 'v2', 'created': 'Mon, 26 Oct 2020 19:06:51 GMT'}]
|
2022-03-17
|
[array(['Adhikari', 'S.', ''], dtype=object)
array(['Akondi', 'C. S.', ''], dtype=object)
array(['Ghoul', 'H. Al', ''], dtype=object)
array(['Ali', 'A.', ''], dtype=object)
array(['Amaryan', 'M.', ''], dtype=object)
array(['Anassontzis', 'E. G.', ''], dtype=object)
array(['Austregesilo', 'A.', ''], dtype=object)
array(['Barbosa', 'F.', ''], dtype=object)
array(['Barlow', 'J.', ''], dtype=object)
array(['Barnes', 'A.', ''], dtype=object)
array(['Barriga', 'E.', ''], dtype=object)
array(['Barsotti', 'R.', ''], dtype=object)
array(['Beattie', 'T. D.', ''], dtype=object)
array(['Benesch', 'J.', ''], dtype=object)
array(['Berdnikov', 'V. V.', ''], dtype=object)
array(['Biallas', 'G.', ''], dtype=object)
array(['Black', 'T.', ''], dtype=object)
array(['Boeglin', 'W.', ''], dtype=object)
array(['Brindza', 'P.', ''], dtype=object)
array(['Briscoe', 'W. J.', ''], dtype=object)
array(['Britton', 'T.', ''], dtype=object)
array(['Brock', 'J.', ''], dtype=object)
array(['Brooks', 'W. K.', ''], dtype=object)
array(['Cannon', 'B. E.', ''], dtype=object)
array(['Carlin', 'C.', ''], dtype=object)
array(['Carman', 'D. S.', ''], dtype=object)
array(['Carstens', 'T.', ''], dtype=object)
array(['Cao', 'N.', ''], dtype=object)
array(['Chernyshov', 'O.', ''], dtype=object)
array(['Chudakov', 'E.', ''], dtype=object)
array(['Cole', 'S.', ''], dtype=object)
array(['Cortes', 'O.', ''], dtype=object)
array(['Crahen', 'W. D.', ''], dtype=object)
array(['Crede', 'V.', ''], dtype=object)
array(['Dalton', 'M. M.', ''], dtype=object)
array(['Daniels', 'T.', ''], dtype=object)
array(['Deur', 'A.', ''], dtype=object)
array(['Dickover', 'C.', ''], dtype=object)
array(['Dobbs', 'S.', ''], dtype=object)
array(['Dolgolenko', 'A.', ''], dtype=object)
array(['Dotel', 'R.', ''], dtype=object)
array(['Dugger', 'M.', ''], dtype=object)
array(['Dzhygadlo', 'R.', ''], dtype=object)
array(['Dzierba', 'A.', ''], dtype=object)
array(['Egiyan', 'H.', ''], dtype=object)
array(['Erbora', 'T.', ''], dtype=object)
array(['Ernst', 'A.', ''], dtype=object)
array(['Eugenio', 'P.', ''], dtype=object)
array(['Fanelli', 'C.', ''], dtype=object)
array(['Fegan', 'S.', ''], dtype=object)
array(['Foda', 'A. M.', ''], dtype=object)
array(['Foote', 'J.', ''], dtype=object)
array(['Frye', 'J.', ''], dtype=object)
array(['Furletov', 'S.', ''], dtype=object)
array(['Gan', 'L.', ''], dtype=object)
array(['Gasparian', 'A.', ''], dtype=object)
array(['Gerasimov', 'A.', ''], dtype=object)
array(['Gevorgyan', 'N.', ''], dtype=object)
array(['Gleason', 'C.', ''], dtype=object)
array(['Goetzen', 'K.', ''], dtype=object)
array(['Goryachev', 'A. Goncalves V. S.', ''], dtype=object)
array(['Guo', 'L.', ''], dtype=object)
array(['Hakobyan', 'H.', ''], dtype=object)
array(['Hamdi', 'A.', ''], dtype=object)
array(['Hardin', 'J.', ''], dtype=object)
array(['Henschel', 'C. L.', ''], dtype=object)
array(['Huber', 'G. M.', ''], dtype=object)
array(['Hutton', 'C.', ''], dtype=object)
array(['Hurley', 'A.', ''], dtype=object)
array(['Ioannou', 'P.', ''], dtype=object)
array(['Ireland', 'D. G.', ''], dtype=object)
array(['Ito', 'M. M.', ''], dtype=object)
array(['Jarvis', 'N. S.', ''], dtype=object)
array(['Jones', 'R. T.', ''], dtype=object)
array(['Kakoyan', 'V.', ''], dtype=object)
array(['Katsaganis', 'S.', ''], dtype=object)
array(['Kalicy', 'G.', ''], dtype=object)
array(['Kamel', 'M.', ''], dtype=object)
array(['Keith', 'C. D.', ''], dtype=object)
array(['Klein', 'F. J.', ''], dtype=object)
array(['Kliemt', 'R.', ''], dtype=object)
array(['Kolybaba', 'D.', ''], dtype=object)
array(['Kourkoumelis', 'C.', ''], dtype=object)
array(['Krueger', 'S. T.', ''], dtype=object)
array(['Kuleshov', 'S.', ''], dtype=object)
array(['Larin', 'I.', ''], dtype=object)
array(['Lawrence', 'D.', ''], dtype=object)
array(['Leckey', 'J. P.', ''], dtype=object)
array(['Lersch', 'D. I.', ''], dtype=object)
array(['Leverington', 'B. D.', ''], dtype=object)
array(['Levine', 'W. I.', ''], dtype=object)
array(['Li', 'W.', ''], dtype=object)
array(['Liu', 'B.', ''], dtype=object)
array(['Livingston', 'K.', ''], dtype=object)
array(['Lolos', 'G. J.', ''], dtype=object)
array(['Lyubovitskij', 'V.', ''], dtype=object)
array(['Mack', 'D.', ''], dtype=object)
array(['Marukyan', 'H.', ''], dtype=object)
array(['Mattione', 'P. T.', ''], dtype=object)
array(['Matveev', 'V.', ''], dtype=object)
array(['McCaughan', 'M.', ''], dtype=object)
array(['McCracken', 'M.', ''], dtype=object)
array(['McGinley', 'W.', ''], dtype=object)
array(['McIntyre', 'J.', ''], dtype=object)
array(['Meekins', 'D.', ''], dtype=object)
array(['Mendez', 'R.', ''], dtype=object)
array(['Meyer', 'C. A.', ''], dtype=object)
array(['Miskimen', 'R.', ''], dtype=object)
array(['Mitchell', 'R. E.', ''], dtype=object)
array(['Mokaya', 'F.', ''], dtype=object)
array(['Moriya', 'K.', ''], dtype=object)
array(['Nerling', 'F.', ''], dtype=object)
array(['Ng', 'L.', ''], dtype=object)
array(['Ni', 'H.', ''], dtype=object)
array(['Ostrovidov', 'A. I.', ''], dtype=object)
array(['Papandreou', 'Z.', ''], dtype=object)
array(['Patsyuk', 'M.', ''], dtype=object)
array(['Paudel', 'C.', ''], dtype=object)
array(['Pauli', 'P.', ''], dtype=object)
array(['Pedroni', 'R.', ''], dtype=object)
array(['Pentchev', 'L.', ''], dtype=object)
array(['Peters', 'K. J.', ''], dtype=object)
array(['Phelps', 'W.', ''], dtype=object)
array(['Pierce', 'J.', ''], dtype=object)
array(['Pooser', 'E.', ''], dtype=object)
array(['Popov', 'V.', ''], dtype=object)
array(['Pratt', 'B.', ''], dtype=object)
array(['Qiang', 'Y.', ''], dtype=object)
array(['Qin', 'N.', ''], dtype=object)
array(['Razmyslovich', 'V.', ''], dtype=object)
array(['Reinhold', 'J.', ''], dtype=object)
array(['Ritchie', 'B. G.', ''], dtype=object)
array(['Ritman', 'J.', ''], dtype=object)
array(['Robison', 'L.', ''], dtype=object)
array(['Romanov', 'D.', ''], dtype=object)
array(['Romero', 'C.', ''], dtype=object)
array(['Salgado', 'C.', ''], dtype=object)
array(['Sandoval', 'N.', ''], dtype=object)
array(['Satogata', 'T.', ''], dtype=object)
array(['Schertz', 'A. M.', ''], dtype=object)
array(['Schadmand', 'S.', ''], dtype=object)
array(['Schick', 'A.', ''], dtype=object)
array(['Schumacher', 'R. A.', ''], dtype=object)
array(['Schwarz', 'C.', ''], dtype=object)
array(['Schwiening', 'J.', ''], dtype=object)
array(['Semenov', 'A. Yu.', ''], dtype=object)
array(['Semenova', 'I. A.', ''], dtype=object)
array(['Seth', 'K. K.', ''], dtype=object)
array(['Shen', 'X.', ''], dtype=object)
array(['Shepherd', 'M. R.', ''], dtype=object)
array(['Smith', 'E. S.', ''], dtype=object)
array(['Sober', 'D. I.', ''], dtype=object)
array(['Somov', 'A.', ''], dtype=object)
array(['Somov', 'S.', ''], dtype=object)
array(['Soto', 'O.', ''], dtype=object)
array(['Sparks', 'N.', ''], dtype=object)
array(['Staib', 'M. J.', ''], dtype=object)
array(['Stanislav', 'C.', ''], dtype=object)
array(['Stevens', 'J. R.', ''], dtype=object)
array(['Stewart', 'J.', ''], dtype=object)
array(['Strakovsky', 'I. I.', ''], dtype=object)
array(['Summner', 'B. C. L.', ''], dtype=object)
array(['Suresh', 'K.', ''], dtype=object)
array(['Tarasov', 'V. V.', ''], dtype=object)
array(['Taylor', 'S.', ''], dtype=object)
array(['Teigrob', 'L. A.', ''], dtype=object)
array(['Teymurazyan', 'A.', ''], dtype=object)
array(['Thiel', 'A.', ''], dtype=object)
array(['Tolstukhin', 'I.', ''], dtype=object)
array(['Tomaradze', 'A.', ''], dtype=object)
array(['Toro', 'A.', ''], dtype=object)
array(['Tsaris', 'A.', ''], dtype=object)
array(['Van Haarlem', 'Y.', ''], dtype=object)
array(['Vasileiadis', 'G.', ''], dtype=object)
array(['Vega', 'I.', ''], dtype=object)
array(['Visser', 'G.', ''], dtype=object)
array(['Voulgaris', 'G.', ''], dtype=object)
array(['Walford', 'N. K.', ''], dtype=object)
array(['Werthmüller', 'D.', ''], dtype=object)
array(['Whitlatch', 'T.', ''], dtype=object)
array(['Wickramaarachchi', 'N.', ''], dtype=object)
array(['Williams', 'M.', ''], dtype=object)
array(['Wolin', 'E.', ''], dtype=object)
array(['Xiao', 'T.', ''], dtype=object)
array(['Yang', 'Y.', ''], dtype=object)
array(['Zarling', 'J.', ''], dtype=object)
array(['Zhang', 'Z.', ''], dtype=object)
array(['Zhou', 'Q.', ''], dtype=object)
array(['Zhou', 'X.', ''], dtype=object)
array(['Zihlmann', 'B.', ''], dtype=object)]
|
18,637 |
cond-mat/0304293
|
Sung-Ho Suck Salk
|
Sung- Sik Lee and Sung-Ho Suck Salk
|
Holon-pair boson theory based on the U(1) and SU(2) slave-boson
approaches to the t-J Hamiltonian
| null | null | null | null |
cond-mat.supr-con cond-mat.str-el
| null |
To supplement our recent brief report on the theory of holon-pair boson
approach to the t-J Hamiltonian [S.-S. Lee and Sung-Ho Suck Salk, Phys. Rev. B
{\bf 64}, 052501(2001)], in this paper we present a full exposure to the
theory, detailed physical implications and predicted various physical
properties of high $T_c$ cuprates. We discuss the significance of coupling
(interplay) between the spin and charge degrees of freedom in the Heisenberg
interaction term of the t-J Hamiltonian. We discuss its importance in causing
the arch-shaped superconducting transition temperature $T_c$ and the pseudogap
(spin gap) temperature $T^*$ tangential to $T_c$ in the overdoped region in the
observed phase diagram of high $T_c$ cuprates. A universal parabolic scaling
behavior of $T^*/T_c$ (or $T_c/T^*$) with hole doping concentration is
predicted in agreement with observations, indicating that there exists
correlation between the pseudogap (spin gap) phase and the superconducting
phase through antiferromagnetic fluctuations. Our proposed holon-pair boson
theory is shown to be self-consistent in that it not only yields the arch
(dome) shape structure of $T_c$ but also reproduces various other physical
properties such as superfluid weight, bose condensation energy, spectral
function, optical conductivity and spin susceptibility, including their
temperature and doping dependence.
|
[{'version': 'v1', 'created': 'Sat, 12 Apr 2003 00:31:27 GMT'}
{'version': 'v2', 'created': 'Fri, 18 Apr 2003 11:16:09 GMT'}]
|
2007-05-23
|
[array(['Lee', 'Sung- Sik', ''], dtype=object)
array(['Salk', 'Sung-Ho Suck', ''], dtype=object)]
|
18,638 |
1407.4683
|
Sergei Dudarev
|
S.L. Dudarev, K. Arakawa, X. Yi, Z. Yao, M.L. Jenkins, M.R. Gilbert,
P.M. Derlet
|
Spatial ordering of nano-dislocation loops in ion-irradiated materials
|
6 pages, 5 figures
|
Proceedings of the 16th International Conference on Fusion Reactor
Materials (ICFRM-16), Beijing, China, 20th-26th October, 2013. Journal of
Nuclear Materials, Vol.455, Issues 1-3, December 2014, p.16-20
|
10.1016/j.jnucmat.2014.02.032
| null |
cond-mat.mtrl-sci
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Defect microstructures formed in ion-irradiated metals, for example iron or
tungsten, often exhibit patterns of spatially ordered nano-scale dislocation
loops. We show that such ordered dislocation loop structures may form
spontaneously as a result of Brownian motion of loops, biased by the
angular-dependent elastic interaction between the loops. Patterns of spatially
ordered loops form once the local density of loops produced by ion irradiation
exceeds a critical threshold value.
|
[{'version': 'v1', 'created': 'Thu, 17 Jul 2014 14:34:20 GMT'}]
|
2014-07-18
|
[array(['Dudarev', 'S. L.', ''], dtype=object)
array(['Arakawa', 'K.', ''], dtype=object)
array(['Yi', 'X.', ''], dtype=object)
array(['Yao', 'Z.', ''], dtype=object)
array(['Jenkins', 'M. L.', ''], dtype=object)
array(['Gilbert', 'M. R.', ''], dtype=object)
array(['Derlet', 'P. M.', ''], dtype=object)]
|
18,639 |
cond-mat/0101417
|
Philip W. Anderson
|
Philip W. Anderson
|
Two-dimensional Fermi Gas Revisited
|
3 pages, no figures
| null | null | null |
cond-mat.str-el
| null |
A number of authors have taken issue with the demonstration that the 2D
Fermion gas with short-range repulsive interactions (and, of course, including
spin) cannot be consistently treated as a renormalised quasiparticle system.
This paper shows that the arguments given in some of these papers are invalid
or irrelevant.
|
[{'version': 'v1', 'created': 'Fri, 26 Jan 2001 21:48:24 GMT'}]
|
2007-05-23
|
[array(['Anderson', 'Philip W.', ''], dtype=object)]
|
18,640 |
0710.0736
|
Alessandro Tomasi
|
David A Kay (Oxford University Computational Laboratory), Alessandro
Tomasi (University of Sussex)
|
Colour image segmentation by the vector-valued Allen-Cahn phase-field
model: a multigrid solution
|
17 pages, 9 figures
|
IEEE Trans. Im. Proc. 18.10 (2009)
|
10.1109/TIP.2009.2026678
| null |
cs.CV cs.NA
| null |
We propose a new method for the numerical solution of a PDE-driven model for
colour image segmentation and give numerical examples of the results. The
method combines the vector-valued Allen-Cahn phase field equation with initial
data fitting terms. This method is known to be closely related to the
Mumford-Shah problem and the level set segmentation by Chan and Vese. Our
numerical solution is performed using a multigrid splitting of a finite element
space, thereby producing an efficient and robust method for the segmentation of
large images.
|
[{'version': 'v1', 'created': 'Wed, 3 Oct 2007 08:51:44 GMT'}]
|
2018-06-08
|
[array(['Kay', 'David A', '', 'Oxford University Computational Laboratory'],
dtype=object)
array(['Tomasi', 'Alessandro', '', 'University of Sussex'], dtype=object)]
|
18,641 |
1208.2713
|
Mathieu Beau
|
Mathieu Beau (STP-DIAS), Rafael Benguria, Raymond Brummelhuis
(LM-Reims), Pierre Duclos (CPT)
|
H2 molecule in strong magnetic fields
| null |
Journal of Physics A: Mathematical and Theoretical 43 (2010)
474005
|
10.1088/1751-8113/43/47/474005
| null |
math-ph math.MP physics.atom-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The Pauli-Hamiltonian of a molecule with fixed nuclei in a strong constant
magnetic field is asymptotic, in norm-resolvent sense, to an effective
Hamiltonian which has the form of a multi-particle Schr\"odinger operator with
interactions given by one-dimensional \delta-potentials. We study this
effective Hamiltonian in the case of the H2 -molecule and establish existence
of the ground state. We also show that the inter-nuclear equilibrium distance
tends to 0 as the field-strength tends to infinity.
|
[{'version': 'v1', 'created': 'Mon, 13 Aug 2012 21:05:54 GMT'}]
|
2012-08-16
|
[array(['Beau', 'Mathieu', '', 'STP-DIAS'], dtype=object)
array(['Benguria', 'Rafael', '', 'LM-Reims'], dtype=object)
array(['Brummelhuis', 'Raymond', '', 'LM-Reims'], dtype=object)
array(['Duclos', 'Pierre', '', 'CPT'], dtype=object)]
|
18,642 |
1909.06890
|
Saar Tochner
|
Saar Tochner, Stefan Schmid and Aviv Zohar
|
Hijacking Routes in Payment Channel Networks: A Predictability Tradeoff
|
13 pages, 20 figures
| null | null | null |
cs.CR cs.GT cs.MA cs.NI
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Off-chain transaction networks can mitigate the scalability issues of today's
trustless electronic cash systems such as Bitcoin. However, these peer-to-peer
networks also introduce a new attack surface which is not well-understood
today. This paper identifies and analyzes, a novel Denial-of-Service attack
which is based on route hijacking, i.e., which exploits the way transactions
are routed and executed along the created channels of the network. This attack
is conceptually interesting as even a limited attacker that manipulates the
topology through the creation of new channels can navigate tradeoffs related to
the way it attacks the network. Furthermore, the attack also highlights a
fundamental design tradeoff for the defender (who determines its own routes):
to become less predictable and hence secure, a rational node has to pay higher
fees to nodes that forward its payments. We find that the three most common
implementations for payment channels in Bitcoin (lnd, C-lightning, Eclair)
approach routing differently. We begin by surveying the current state of the
Lightning network and explore the routes chosen by these implementations. We
find that in the current network nearly 60\% of all routes pass through only
five nodes, while 80\% go through only 10 nodes. Thus, a relatively small
number of colluding nodes can deny service to a large fraction of the network.
We then turn to study an external attacker who creates links to the network
and draws more routes through its nodes by asking for lower fees. We find that
just five new links are enough to draw the majority (65\% - 75\%) of the
traffic regardless of the implementation being used. The cost of creating these
links is very low.
We discuss the differences between implementations and eventually derive our
own suggested routing policy, which is based on a novel combination of existing
approaches.
|
[{'version': 'v1', 'created': 'Sun, 15 Sep 2019 21:34:59 GMT'}]
|
2019-09-17
|
[array(['Tochner', 'Saar', ''], dtype=object)
array(['Schmid', 'Stefan', ''], dtype=object)
array(['Zohar', 'Aviv', ''], dtype=object)]
|
18,643 |
1401.0120
|
Feifei Ma
|
Cunjing Ge, Feifei Ma, Jian Zhang
|
A Fast and Practical Method to Estimate Volumes of Convex Polytopes
| null | null | null | null |
cs.CG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The volume is an important attribute of a convex body. In general, it is
quite difficult to calculate the exact volume. But in many cases, it suffices
to have an approximate value. Volume estimation methods for convex bodies have
been extensively studied in theory, however, there is still a lack of practical
implementations of such methods. In this paper, we present an efficient method
which is based on the Multiphase Monte-Carlo algorithm to estimate volumes of
convex polytopes. It uses the coordinate directions hit-and-run method, and
employs a technique of reutilizing sample points. The experiments show that our
method can efficiently handle instances with dozens of dimensions with high
accuracy.
|
[{'version': 'v1', 'created': 'Tue, 31 Dec 2013 09:54:14 GMT'}]
|
2014-01-03
|
[array(['Ge', 'Cunjing', ''], dtype=object)
array(['Ma', 'Feifei', ''], dtype=object)
array(['Zhang', 'Jian', ''], dtype=object)]
|
18,644 |
2105.08056
|
Phillip Weinberg
|
Phillip Weinberg and Adrian E. Feiguin
|
A graphene edge-mediated quantum gate
|
6 pages, 8 figures, supplemental material attached
|
Appl. Phys. Lett. 119, 064001 (2021)
|
10.1063/5.0058667
| null |
cond-mat.mes-hall cond-mat.str-el
|
http://creativecommons.org/licenses/by/4.0/
|
We propose a quantum gate architecture that allows for the systematic control
of the effective exchange interactions between magnetic impurities embedded in
nano-scale graphene flakes connected by a gated bridge. The entanglement
between the magnetic moment and the edge states of the fragments is used to
electrostatically tune the exchange interaction from ferro to antiferromagnetic
by merely changing the bridge's carrier density. By characterizing the effects
of size and coupling parameters, we explore different operation regimes of this
device by means of exact calculations with the density matrix renormalization
group (DMRG). We analyze the results utilizing a simplified model that accounts
for the main many-body mechanisms. Finally, we discuss how to use arrays of
these devices to build quantum simulators for quantum many-body Hamiltonians.
|
[{'version': 'v1', 'created': 'Mon, 17 May 2021 17:59:34 GMT'}
{'version': 'v2', 'created': 'Tue, 1 Jun 2021 14:20:59 GMT'}
{'version': 'v3', 'created': 'Fri, 23 Jul 2021 18:18:43 GMT'}
{'version': 'v4', 'created': 'Fri, 3 Sep 2021 17:07:34 GMT'}]
|
2021-09-06
|
[array(['Weinberg', 'Phillip', ''], dtype=object)
array(['Feiguin', 'Adrian E.', ''], dtype=object)]
|
18,645 |
hep-ph/0210412
|
Adrian Dumitru
|
A. Dumitru (BNL)
|
High-multiplicity pA collisions and the small-x effective action
|
6 Pages, 3 Figures; Presented at the Workshop on Coherent Effects at
RHIC and LHC: Initial Conditions and Hard Probes'', ECT*, Trento (Italy),
October 14-25, 2002, http://pluto.mpi-hd.mpg.de/trento
| null | null | null |
hep-ph
| null |
I discuss the p_t distributions for high-multiplicity events originating from
semi-classical variation of the gluon density of the proton.The multiplicity
distribution measures the curvature of the effective action for the small-x
gluon fields. For pA collisions at the RHIC and LHC colliders, semi-classically
the multiplicity distribution reflects the distribution of saturation momenta
of the proton but not that of the nucleus. The average transverse momentum in
the central region grows with dN/dy, while the p_t distribution of leading
hadrons in the proton fragmentation region should depend less on the
multiplicity in the central region.
|
[{'version': 'v1', 'created': 'Tue, 29 Oct 2002 20:36:43 GMT'}]
|
2007-05-23
|
[array(['Dumitru', 'A.', '', 'BNL'], dtype=object)]
|
18,646 |
0709.2882
|
Ilya Vinogradov
|
Ilya Vinogradov
|
A Generalization of a Result of Hardy and Littlewood
|
11 pages
| null | null | null |
math.NT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this note we study the growth of \sum_{m=1}^M\frac1{\|m\alpha\|} as a
function of M for different classes of \alpha\in[0,1). Hardy and Littlewood
showed that for numbers of bounded type, the sum is \simeq M\log M. We give a
very simple proof for it. Further we show the following for generic \alpha. For
a non-decreasing function \phi tending to infinity,
\limsup_{M\to\infty}\frac1{\phi(\log M)}\bigg[\frac1{M\log
M}\sum_{m=1}^M\frac1{\|m\alpha\|}\bigg] is zero or infinity according as
\sum\frac1{k\phi(k)} converges or diverges.
|
[{'version': 'v1', 'created': 'Tue, 18 Sep 2007 16:53:24 GMT'}
{'version': 'v2', 'created': 'Tue, 8 Nov 2011 18:10:45 GMT'}]
|
2011-11-09
|
[array(['Vinogradov', 'Ilya', ''], dtype=object)]
|
18,647 |
cond-mat/0703465
|
Yusuke Nishida
|
Yusuke Nishida
|
Unitary Fermi gas in the epsilon expansion
|
103 pages, 29 figures; PhD thesis, Univ. of Tokyo, 2007 (supervisor:
T. Hatsuda and D. T. Son); (v2) Eqs.(6.43)-(6.47) are corrected
| null | null | null |
cond-mat.other hep-ph nucl-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We construct systematic expansions around four and two spatial dimensions for
a Fermi gas near the unitarity limit. Near four spatial dimensions such a Fermi
gas can be understood as a weakly-interacting system of fermionic and bosonic
degrees of freedom. To the leading and next-to-leading orders in the expansion
over \epsilon=4-d, with d being the dimensionality of space, we determine the
thermodynamic functions, the fermion quasiparticle spectrum, the critical
polarizations, and the critical temperature as functions of the binding energy
of the two-body state. We also show that the unitary Fermi gas near two spatial
dimensions reduces to a weakly-interacting Fermi gas and calculate the
thermodynamic functions and the fermion quasiparticle spectrum in the expansion
over \bar\epsilon=d-2. We discuss the matching of the two systematic expansions
around four and two spatial dimensions in order to extract physical observables
at d=3. We find good agreement of the results with those from recent Monte
Carlo simulations.
|
[{'version': 'v1', 'created': 'Mon, 19 Mar 2007 14:34:25 GMT'}
{'version': 'v2', 'created': 'Mon, 25 Aug 2008 06:36:13 GMT'}]
|
2008-08-25
|
[array(['Nishida', 'Yusuke', ''], dtype=object)]
|
18,648 |
0902.3616
|
Stephan Kreutzer
|
Stephan Kreutzer
|
Algorithmic Meta-Theorems
| null | null | null | null |
cs.LO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Algorithmic meta-theorems are general algorithmic results applying to a whole
range of problems, rather than just to a single problem alone. They often have
a "logical" and a "structural" component, that is they are results of the form:
every computational problem that can be formalised in a given logic L can be
solved efficiently on every class C of structures satisfying certain
conditions. This paper gives a survey of algorithmic meta-theorems obtained in
recent years and the methods used to prove them. As many meta-theorems use
results from graph minor theory, we give a brief introduction to the theory
developed by Robertson and Seymour for their proof of the graph minor theorem
and state the main algorithmic consequences of this theory as far as they are
needed in the theory of algorithmic meta-theorems.
|
[{'version': 'v1', 'created': 'Fri, 20 Feb 2009 16:45:04 GMT'}]
|
2009-02-23
|
[array(['Kreutzer', 'Stephan', ''], dtype=object)]
|
18,649 |
1803.02421
|
Fady Medhat
|
Fady Medhat, David Chesmore, John Robinson
|
Masked Conditional Neural Networks for Audio Classification
|
Restricted BoltzmannMachine, RBM, Conditional Restricted Boltzmann
Machine, CRBM, Music Information Retrieval, MIR, Conditional Neural Network,
CLNN, Masked Conditional Neural Network, MCLNN, Deep Neural Network
|
International Conference on Artificial Neural Networks (ICANN)
Year: 2017
|
10.1007/978-3-319-68612-7_40
| null |
stat.ML cs.LG cs.SD eess.AS
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present the ConditionaL Neural Network (CLNN) and the Masked ConditionaL
Neural Network (MCLNN) designed for temporal signal recognition. The CLNN takes
into consideration the temporal nature of the sound signal and the MCLNN
extends upon the CLNN through a binary mask to preserve the spatial locality of
the features and allows an automated exploration of the features combination
analogous to hand-crafting the most relevant features for the recognition task.
MCLNN has achieved competitive recognition accuracies on the GTZAN and the
ISMIR2004 music datasets that surpass several state-of-the-art neural network
based architectures and hand-crafted methods applied on both datasets.
|
[{'version': 'v1', 'created': 'Tue, 6 Mar 2018 20:54:00 GMT'}
{'version': 'v2', 'created': 'Sat, 23 Mar 2019 10:56:33 GMT'}]
|
2019-03-26
|
[array(['Medhat', 'Fady', ''], dtype=object)
array(['Chesmore', 'David', ''], dtype=object)
array(['Robinson', 'John', ''], dtype=object)]
|
18,650 |
1405.1691
|
Henning Krause
|
Henning Krause
|
Highest weight categories and strict polynomial functors
|
28 pages. This is a completely revised version (twice as long as
version 2). The first part about highest weight categories over an arbitrary
commutative base ring is new. Also the title has been changed
| null | null | null |
math.RT math.AC math.AT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Highest weight categories are described in terms of standard objects and
recollements of abelian categories, working over an arbitrary commutative base
ring. Then the highest weight structure for categories of strict polynomial
functors is explained, using the theory of Schur and Weyl functors. A
consequence is the well-known fact that Schur algebras are quasi-hereditary.
|
[{'version': 'v1', 'created': 'Wed, 7 May 2014 18:32:12 GMT'}
{'version': 'v2', 'created': 'Tue, 27 May 2014 21:55:25 GMT'}
{'version': 'v3', 'created': 'Tue, 22 Dec 2015 11:55:54 GMT'}]
|
2015-12-23
|
[array(['Krause', 'Henning', ''], dtype=object)]
|
18,651 |
1512.04993
|
Daniel Roberts
|
Adam R. Brown, Daniel A. Roberts, Leonard Susskind, Brian Swingle,
Ying Zhao
|
Complexity, action, and black holes
|
55+14 pages, many figures. v2: (so many) typos fixed, references
added
|
Phys. Rev. D 93, 086006 (2016)
|
10.1103/PhysRevD.93.086006
| null |
hep-th gr-qc quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Our earlier paper "Complexity Equals Action" conjectured that the quantum
computational complexity of a holographic state is given by the classical
action of a region in the bulk (the "Wheeler-DeWitt" patch). We provide
calculations for the results quoted in that paper, explain how it fits into a
broader (tensor) network of ideas, and elaborate on the hypothesis that black
holes are the fastest computers in nature.
|
[{'version': 'v1', 'created': 'Tue, 15 Dec 2015 22:28:19 GMT'}
{'version': 'v2', 'created': 'Tue, 10 May 2016 23:02:42 GMT'}]
|
2016-05-12
|
[array(['Brown', 'Adam R.', ''], dtype=object)
array(['Roberts', 'Daniel A.', ''], dtype=object)
array(['Susskind', 'Leonard', ''], dtype=object)
array(['Swingle', 'Brian', ''], dtype=object)
array(['Zhao', 'Ying', ''], dtype=object)]
|
18,652 |
1201.4429
|
Alexandre Baranov
|
A.M.Baranov
|
Interior Static Stellar Model with Electric Charge as an Oscillator
|
2 pages, Talk presented at the 5th Int. Conf. on Grav. and Astrophys.
of Acian-Pacific Countries (ICGA-5), Moscow, 2001
|
Gravitation and Cosmology, Vol.8 (2002), Supplement II, pp.10-11
| null | null |
gr-qc math-ph math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A model approach to the description of static stars filled with a charged
Pascal perfect fluid within the framework of general relativity is
investigated. The metric is written in Bondi's radiation coordinates. The
gravitational equations are reduced to a nonlinear oscillator equation after
transfomation to a new variable as a function of the radial coordinate. It is
shown that in this case exact solutions of the Einstein-Maxwell equations for a
concrete energy density distribution law of the charged fluid may be obtained
as solution of the harmonic oscillator equation.
|
[{'version': 'v1', 'created': 'Sat, 21 Jan 2012 03:54:40 GMT'}]
|
2012-01-24
|
[array(['Baranov', 'A. M.', ''], dtype=object)]
|
18,653 |
2102.10111
|
Andr\'e Pereira Dr
|
Andr\'e Luis de Jesus Pereira, David Santamar\'ia-P\'erez, Ros\'ario
Vilaplana, Daniel Errandonea, Catalin Popescu, Estelina Lora da Silva, Juan
Angel Sans, Juan Rodr\'iguez-Carvajal, Alfonso Mu\~noz, Pl\'acida
Rodr\'iguez-Hern\'andez, Andres Mujica, Silvana Elena Radescu, Armando
Beltr\'an, Alberto Otero de la Roza, Marcelo Nalin, Miguel Mollar and
Francisco Javier Manj\'on
|
Experimental and theoretical study of SbPO4 under compression
|
Main text - 43 pages Supplementary Information - 13 pages
| null |
10.1021/acs.inorgchem.9b02268
| null |
cond-mat.mtrl-sci
|
http://creativecommons.org/licenses/by/4.0/
|
SbPO4 is a complex monoclinic layered material characterized by a strong
activity of the non-bonding lone electron pair (LEP) of Sb. The strong cation
LEP leads to the formation of layers piled up along the a-axis and linked by
weak Sb-O electrostatic interactions. In fact, Sb is 4-fold coordination with O
similar to what occurs with the P-O coordination, despite the large difference
of ionic radii and electronegativity between both elements. Here we report a
joint experimental and theoretical study of the structural and vibrational
properties of SbPO4 at high pressure. We show that SbPO4 is not only one of the
most compressible phosphates but also one of the most compressible compounds of
the ABO4 family. Moreover, it has a considerable anisotropic compression
behavior with the largest compression occurring along a direction close to
a-axis and governed by the compression of the LEP and the weak inter-layer Sb-O
bonds. The strong compression along the a-axis leads to a subtle modification
of the monoclinic crystal structure above 3 GPa leading from a 2D to a 3D
material. Moreover, the onset of a reversible pressure-induced phase transition
is observed above 9 GPa, which is completed above 20 GPa. We propose that the
high-pressure phase is a triclinic distortion of the original monoclinic phase.
The understanding of the compression mechanism of SbPO4 can aid in
understanding the importance of the ion intercalation and catalytic properties
of this layered compound.
|
[{'version': 'v1', 'created': 'Fri, 19 Feb 2021 11:38:43 GMT'}]
|
2021-02-23
|
[array(['Pereira', 'André Luis de Jesus', ''], dtype=object)
array(['Santamaría-Pérez', 'David', ''], dtype=object)
array(['Vilaplana', 'Rosário', ''], dtype=object)
array(['Errandonea', 'Daniel', ''], dtype=object)
array(['Popescu', 'Catalin', ''], dtype=object)
array(['da Silva', 'Estelina Lora', ''], dtype=object)
array(['Sans', 'Juan Angel', ''], dtype=object)
array(['Rodríguez-Carvajal', 'Juan', ''], dtype=object)
array(['Muñoz', 'Alfonso', ''], dtype=object)
array(['Rodríguez-Hernández', 'Plácida', ''], dtype=object)
array(['Mujica', 'Andres', ''], dtype=object)
array(['Radescu', 'Silvana Elena', ''], dtype=object)
array(['Beltrán', 'Armando', ''], dtype=object)
array(['de la Roza', 'Alberto Otero', ''], dtype=object)
array(['Nalin', 'Marcelo', ''], dtype=object)
array(['Mollar', 'Miguel', ''], dtype=object)
array(['Manjón', 'Francisco Javier', ''], dtype=object)]
|
18,654 |
2209.05290
|
Moacir Aloisio
|
M. Aloisio, S. L. Carvalho, C. R. de Oliveira and E. Souza
|
On spectral measures and convergence rates in von Neumann's Ergodic
Theorem
| null | null | null | null |
math.SP math.DS
|
http://creativecommons.org/licenses/by/4.0/
|
We show that the power-law decay exponents in von Neumann's Ergodic Theorem
(for discrete systems) are the pointwise scaling exponents of a spectral
measure at the spectral value~$1$. We also prove that, under an assumption of
weak convergence, in the absence of a spectral gap, the convergence rates of
the time-average in von Neumann's Ergodic Theorem depend on sequences of time
going to infinity.
|
[{'version': 'v1', 'created': 'Mon, 12 Sep 2022 14:44:48 GMT'}]
|
2022-09-13
|
[array(['Aloisio', 'M.', ''], dtype=object)
array(['Carvalho', 'S. L.', ''], dtype=object)
array(['de Oliveira', 'C. R.', ''], dtype=object)
array(['Souza', 'E.', ''], dtype=object)]
|
18,655 |
cond-mat/0209135
|
Iacopo Carusotto
|
Iacopo Carusotto and Yvan Castin
|
Exact reformulation of the bosonic many-body problem in terms of
stochastic wave functions: convergence issues
|
Proceedings of the Laser Physics Workshop held in Bratislava, July
2002. Submitted to Laser Physics
|
Laser Physics 13, 509-516 (2003)
|
10.1007/s00023-003-0961-7
| null |
cond-mat.soft
| null |
There exist methods to reformulate in an exact way the many-body problem of
interacting bosons in terms of the stochastic evolution of single particle wave
functions. For one such reformulation, the so-called simple Fock scheme, we
present an elementary derivation, much simpler than the original one.
Furthermore, we show that two other schemes, based on coherent states of the
matter field rather than on Fock states, lead to an infinite statistical
uncertainty in the continuous time limit. The simple Fock scheme is therefore,
up to now, the only one that was proved to lead to a convergent Monte Carlo
simulation scheme at all times.
|
[{'version': 'v1', 'created': 'Thu, 5 Sep 2002 15:02:52 GMT'}]
|
2009-11-07
|
[array(['Carusotto', 'Iacopo', ''], dtype=object)
array(['Castin', 'Yvan', ''], dtype=object)]
|
18,656 |
1312.7150
|
Saralees Nadarajah
|
C. S. Withers, S. Nadarajah
|
The distribution of the maximum of an ARMA(1, 1) process
|
arXiv admin note: text overlap with arXiv:1001.5265
| null | null | null |
math.ST stat.TH
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We give the cumulative distribution function of $M_n$, the maximum of a
sequence of $n$ observations from an ARMA(1, 1) process. Solutions are first
given in terms of repeated integrals and then for the case, where the
underlying random variables are absolutely continuous. The distribution of
$M_n$ is then given as a weighted sum of the $n$th powers of the eigenvalues of
a non-symmetric Fredholm kernel. The weights are given in terms of the left and
right eigenfunctions of the kernel.
These results are large deviations expansions for estimates, since the
maximum need not be standardized to have a limit. In fact, such a limit need
not exist.
|
[{'version': 'v1', 'created': 'Thu, 26 Dec 2013 21:09:01 GMT'}]
|
2013-12-30
|
[array(['Withers', 'C. S.', ''], dtype=object)
array(['Nadarajah', 'S.', ''], dtype=object)]
|
18,657 |
1711.06107
|
Antti Luoto
|
Christel Geiss, Antti Luoto, Paavo Salminen
|
On first exit times and their means for Brownian bridges
|
26 pages
|
J. Appl. Probab. 56 (2019) 701-722
|
10.1017/jpr.2019.42
| null |
math.PR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
For a Brownian bridge from $0$ to $y$ we prove that the mean of the first
exit time from interval $(-h,h), \,\, h>0,$ behaves as $O(h^2)$ when $h
\downarrow 0.$ Similar behavior is seen to hold also for the 3-dimensional
Bessel bridge. For Brownian bridge and 3-dimensional Bessel bridge this mean of
the first exit time has a puzzling representation in terms of the Kolmogorov
distribution. The result regarding the Brownian bridge is applied to prove in
detail an estimate needed by Walsh to determine the convergence of the binomial
tree scheme for European options.
|
[{'version': 'v1', 'created': 'Thu, 16 Nov 2017 14:33:56 GMT'}]
|
2019-10-02
|
[array(['Geiss', 'Christel', ''], dtype=object)
array(['Luoto', 'Antti', ''], dtype=object)
array(['Salminen', 'Paavo', ''], dtype=object)]
|
18,658 |
cond-mat/0111124
|
Vishal Mehra
|
Vishal Mehra and Peter Grassberger
|
On the trapping reaction with mobile traps
|
4 pages, 5 figures
| null |
10.1103/PhysRevE.65.050101
| null |
cond-mat.stat-mech
| null |
We present Monte Carlo results for the two-species trapping reaction $A+B \to
B$ with diffusing $A$ and $B$ on lattices in one, two and three dimension. We
use a novel algorithm which permits to simulate survival probabilities of $A$
partic les down to $<10^{-30}$ with high accuracy. The results for the survival
probability agree much better with the exact asymptotic predictions of Bramson
and Lebowitz (Phys. Rev. Lett. {\bf 61}, 2397 (1988)) than with the heuristics
of Kang and Redner (J. Phys. A {\bf 17}, L451 (1984)). But there are very large
deviations from either which show that even these simulations are far from
asymptotia. This is supported by the rms. displacement of $A$ particles which
clearly show that the asymptotic regime has not been reached, at least for
$d=2$ and $d=3$.
|
[{'version': 'v1', 'created': 'Thu, 8 Nov 2001 14:22:17 GMT'}]
|
2009-11-07
|
[array(['Mehra', 'Vishal', ''], dtype=object)
array(['Grassberger', 'Peter', ''], dtype=object)]
|
18,659 |
1712.04272
|
Mario Silveirinha G.
|
Mario G. Silveirinha
|
Modal expansions in dispersive material systems with application to
quantum optics and topological photonics
|
final version of a book chapter to appear in "Advances in
Mathematical Methods for Electromagnetics.", published by IET and edited by
Paul Smith, Kazuya Kobayashi
| null | null | null |
physics.optics
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
It is proven that in the lossless case the electrodynamics of a generic
inhomogeneous possibly bianisotropic and nonreciprocal system may be described
by an augmented state-vector whose time evolution is determined by a Hermitian
operator. As a consequence, it is shown that a generic electromagnetic field
distribution can be expanded into a complete set of normal modes that satisfy
generalized orthogonality relations. Importantly, the modal expansions in
dispersive systems are not unique because the electromagnetic degrees of
freedom span only part of the entire Hilbert space. The developed theory is
used to obtain a modal expansion of the system Green's function.
Furthermore, it is highlighted that the Hermitian-type formulation of the
dispersive Maxwell's equations enables one to extend the powerful ideas of
topological photonics to a wide range of electromagnetic systems and to
characterize electromagnetic topological phases. In addition, we illustrate how
the developed formalism can be applied to quantum optics. We present a simple
procedure to quantize the electromagnetic field in a generic bianisotropic and
nonreciprocal cavity and derive the quantum correlations of the electromagnetic
fields.
|
[{'version': 'v1', 'created': 'Tue, 12 Dec 2017 13:01:29 GMT'}
{'version': 'v2', 'created': 'Wed, 9 Jan 2019 13:28:24 GMT'}]
|
2019-01-10
|
[array(['Silveirinha', 'Mario G.', ''], dtype=object)]
|
18,660 |
math/0603536
|
Igor Bayak
|
Igor Bayak
|
Gravity model for topological features on a cylindrical manifold
|
14 pages
| null | null | null |
math.AG math-ph math.MP
| null |
A model aimed at understanding quantum gravity in terms of Birkhoff's
approach is discussed. The geometry of this model is constructed by using a
winding map of Minkowski space into a $\mathbb{R}^{3} \times S^{1}$-cylinder.
The basic field of this model is a field of unit vectors defined through the
velocity field of a flow wrapping the cylinder. The degeneration of some parts
of the flow into circles (topological features) results in inhomogeneities and
gives rise to a scalar field, analogous to the gravitational field. The
geometry and dynamics of this field are briefly discussed. We treat the
intersections between the topological features and the observer's 3-space as
matter particles and argue that these entities are likely to possess some
quantum properties.
|
[{'version': 'v1', 'created': 'Wed, 22 Mar 2006 15:57:04 GMT'}
{'version': 'v10', 'created': 'Tue, 2 Jan 2007 13:23:58 GMT'}
{'version': 'v11', 'created': 'Tue, 9 Jan 2007 05:16:30 GMT'}
{'version': 'v12', 'created': 'Wed, 10 Jan 2007 05:21:09 GMT'}
{'version': 'v13', 'created': 'Thu, 18 Jan 2007 16:55:39 GMT'}
{'version': 'v14', 'created': 'Sun, 21 Jan 2007 14:43:29 GMT'}
{'version': 'v15', 'created': 'Sun, 28 Jan 2007 22:07:14 GMT'}
{'version': 'v16', 'created': 'Mon, 26 Mar 2007 13:48:31 GMT'}
{'version': 'v17', 'created': 'Sat, 16 Jun 2007 04:48:51 GMT'}
{'version': 'v18', 'created': 'Wed, 20 Jun 2007 20:44:52 GMT'}
{'version': 'v2', 'created': 'Fri, 19 May 2006 19:55:16 GMT'}
{'version': 'v3', 'created': 'Fri, 26 May 2006 12:21:33 GMT'}
{'version': 'v4', 'created': 'Thu, 1 Jun 2006 20:03:11 GMT'}
{'version': 'v5', 'created': 'Mon, 5 Jun 2006 12:28:31 GMT'}
{'version': 'v6', 'created': 'Tue, 6 Jun 2006 09:46:10 GMT'}
{'version': 'v7', 'created': 'Mon, 12 Jun 2006 12:02:56 GMT'}
{'version': 'v8', 'created': 'Thu, 15 Jun 2006 14:01:06 GMT'}
{'version': 'v9', 'created': 'Tue, 27 Jun 2006 12:06:15 GMT'}]
|
2007-06-20
|
[array(['Bayak', 'Igor', ''], dtype=object)]
|
18,661 |
2306.17414
|
Jan-Frederik Pietschmann
|
Antonio Esposito, Georg Heinze, Jan-Frederik Pietschmann, Andr\'e
Schlichting
|
Graph-to-local limit for a multi-species nonlocal cross-interaction
system
|
arXiv admin note: text overlap with arXiv:2306.03475
| null | null | null |
math.AP math.DS
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this note we continue the study of nonlocal interaction dynamics on a
sequence of infinite graphs, extending the results of [Esposito et. al 2023+]
to an arbitrary number of species. Our analysis relies on the observation that
the graph dynamics form a gradient flow with respect to a non-symmetric
Finslerian gradient structure. Keeping the nonlocal interaction energy fixed,
while localising the graph structure, we are able to prove evolutionary
{\Gamma}-convergence to an Otto-Wassertein-type gradient flow with a
tensor-weighted, yet symmetric, inner product. As a byproduct this implies the
existence of solutions to the multi-species non-local (cross-)interacation
system on the tensor-weighted Euclidean space
|
[{'version': 'v1', 'created': 'Fri, 30 Jun 2023 06:05:56 GMT'}]
|
2023-07-03
|
[array(['Esposito', 'Antonio', ''], dtype=object)
array(['Heinze', 'Georg', ''], dtype=object)
array(['Pietschmann', 'Jan-Frederik', ''], dtype=object)
array(['Schlichting', 'André', ''], dtype=object)]
|
18,662 |
1302.1567
|
Solomon Eyal Shimony
|
Solomon Eyal Shimony, Carmel Domshlak, Eugene Santos Jr
|
Cost-Sharing in Bayesian Knowledge Bases
|
Appears in Proceedings of the Thirteenth Conference on Uncertainty in
Artificial Intelligence (UAI1997)
| null | null |
UAI-P-1997-PG-421-428
|
cs.AI
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Bayesian knowledge bases (BKBs) are a generalization of Bayes networks and
weighted proof graphs (WAODAGs), that allow cycles in the causal graph.
Reasoning in BKBs requires finding the most probable inferences consistent with
the evidence. The cost-sharing heuristic for finding least-cost explanations in
WAODAGs was presented and shown to be effective by Charniak and Husain.
However, the cycles in BKBs would make the definition of cost-sharing cyclic as
well, if applied directly to BKBs. By treating the defining equations of
cost-sharing as a system of equations, one can properly define an admissible
cost-sharing heuristic for BKBs. Empirical evaluation shows that cost-sharing
improves performance significantly when applied to BKBs.
|
[{'version': 'v1', 'created': 'Wed, 6 Feb 2013 15:58:57 GMT'}]
|
2013-02-08
|
[array(['Shimony', 'Solomon Eyal', ''], dtype=object)
array(['Domshlak', 'Carmel', ''], dtype=object)
array(['Santos', 'Eugene', 'Jr'], dtype=object)]
|
18,663 |
1208.0148
|
V Ravichandran
|
Sumit Nagpal, V. Ravichandran
|
Applications of Theory of Differential Subordination for Functions with
Fixed Initial Coefficient to Univalent Functions
| null |
Annales Polonici Mathematici, 105 (2012), 225-238
|
10.4064/ap105-3-2
| null |
math.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
By using the theory of first-order differential subordination for functions
with fixed initial coefficient, several well-known results for subclasses of
univalent functions are improved by restricting the functions to have fixed
second coefficient. The influence of the second coefficient of univalent
functions is evident in the results obtained.
|
[{'version': 'v1', 'created': 'Wed, 1 Aug 2012 09:26:16 GMT'}]
|
2012-08-02
|
[array(['Nagpal', 'Sumit', ''], dtype=object)
array(['Ravichandran', 'V.', ''], dtype=object)]
|
18,664 |
cond-mat/9512061
|
Margaret Gabler
|
Chetan Nayak and Frank Wilczek
|
Quantum Numbers of Textured Hall Effect Quasiparticles
|
13 pages, no figures, Phyzzx
| null |
10.1103/PhysRevLett.77.4418
|
IASSNS-HEP 95-104
|
cond-mat
| null |
We propose a class of variational wave functions with slow variation in spin
and charge density and simple vortex structure at infinity, which properly
generalize both the Laughlin quasiparticles and baby Skyrmions. We argue that
the spin of the corresponding quasiparticle has a fractional part related in a
universal fashion to the properties of the bulk state, and propose a direct
experimental test of this claim. We show that certain spin-singlet quantum Hall
states can be understood as arising from primary polarized states by Skyrmion
condensation.
|
[{'version': 'v1', 'created': 'Fri, 8 Dec 1995 14:30:11 GMT'}]
|
2009-10-28
|
[array(['Nayak', 'Chetan', ''], dtype=object)
array(['Wilczek', 'Frank', ''], dtype=object)]
|
18,665 |
hep-th/0210263
|
Rizos John
|
I. Antoniadis (CERN), E. Kiritsis (Univ. of Crete, FORTH and CPHT), J.
Rizos (Univ. of Ioannina) and T.N. Tomaras (Univ. of Crete and FORTH)
|
D-branes and the Standard Model
|
42 pages, Latex2e, 6 figures, final version to be published in Nucl.
Phys. B
|
Nucl.Phys.B660:81-115,2003
|
10.1016/S0550-3213(03)00256-6
|
CERN-TH/2002-272
|
hep-th hep-ph
| null |
We perform a systematic study of the Standard Model embedding in a D-brane
configuration of type I string theory at the TeV scale. We end up with an
attractive model and we study several phenomenological questions, such as gauge
coupling unification, proton stability, fermion masses and neutrino
oscillations. At the string scale, the gauge group is U(3)_color x U(2)_weak x
U(1)_1 x U(1)_bulk. The corresponding gauge bosons are localized on three
collections of branes; two of them describe the strong and weak interactions,
while the last abelian factor lives on a brane which is extended in two large
extra dimensions with a size of afew microns. The hypercharge is a linear
combination of the first three U(1)s. All remaining U(1)s get masses at the TeV
scale due to anomalies, leaving the baryon and lepton numbers as
(perturbatively) unbroken global symmetries at low energies. The conservation
of baryon number assures proton stability, while lepton number symmetry
guarantees light neutrino masses that involve a right-handed neutrino in the
bulk. The model predicts the value of the weak angle which is compatible with
the experiment when the string scale is in the TeV region. It also contains two
Higgs doublets that provide tree-level masses to all fermions of the heaviest
generation, with calculable Yukawa couplings; one obtains a naturally heavy top
and the correct ratio m_b/m_tau. We also study neutrino masses and mixings in
relation to recent solar and atmospheric neutrino data.
|
[{'version': 'v1', 'created': 'Mon, 28 Oct 2002 12:44:37 GMT'}
{'version': 'v2', 'created': 'Thu, 22 May 2003 15:32:39 GMT'}]
|
2008-11-26
|
[array(['Antoniadis', 'I.', '', 'CERN'], dtype=object)
array(['Kiritsis', 'E.', '', 'Univ. of Crete, FORTH and CPHT'],
dtype=object)
array(['Rizos', 'J.', '', 'Univ. of Ioannina'], dtype=object)
array(['Tomaras', 'T. N.', '', 'Univ. of Crete and FORTH'], dtype=object)]
|
18,666 |
2305.05515
|
Vasilis Oikonomou
|
S.D. Odintsov, V.K. Oikonomou
|
Inflationary Attractors Predictions for Static Neutron Stars in the
Mass-Gap Region
|
PRD Accepted, abstract reduced due to arXiv restrictions
| null |
10.1103/PhysRevD.107.104039
| null |
gr-qc
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this work we study static neutron stars in the context of several
inflationary models which are popular in cosmology. These inflationary models
are non-minimally coupled scalar theories which yield a viable inflationary
phenomenology in both Jordan and Einstein frames. By considering the
constraints from inflationary theories, which basically determine the values of
the potential strength, usually considered as a free parameter in astrophysical
neutron star works, we construct and solve the Tolman-Oppenheimer-Volkoff
equations using a solid python-3 LSODA integrator. For our study we consider
several popular inflationary models, such as the universal attractors, the
$R^p$ attractors (three distinct model values), the induced inflation, the
quadratic inflation, the Higgs inflation and the $a$-attractors (two distinct
model values) and for the following popular equations of state the WFF1, the
SLy, the APR, the MS1, the AP3, the AP4, the ENG, the MPA1 and the MS1b. We
construct the $M-R$ diagram and we confront the resulting theory with
theoretical and observational constraints. As we demonstrate, remarkably, all
the neutron stars produced by all the inflationary models we considered are
compatible with all the constraints for the MPA1 equation of state. It is
notable that for this particular equation of state, the maximum masses of the
neutron stars are in the mass-gap region with $M>2.5M_{\odot}$, but lower than
the 3 solar masses causal limit. We also make the observation that as the NICER
constraints are pushed towards larger radii, as for example in the case of the
black widow pulsar PSR J0952-0607, it seems that equations of state that
produce neutron stars with maximum masses in the mass gap region, with
$M>2.5M_{\odot}$, but lower than the 3 solar masses causal limit, are favored
and are compatible with the modified NICER constraints.
|
[{'version': 'v1', 'created': 'Tue, 9 May 2023 15:09:26 GMT'}]
|
2023-05-31
|
[array(['Odintsov', 'S. D.', ''], dtype=object)
array(['Oikonomou', 'V. K.', ''], dtype=object)]
|
18,667 |
2209.03327
|
Francesco Sisini Dr
|
Francesco Sisini, Igor Ciminelli, Fabio Antonio Bovino
|
Quantum computing teaching with CoSpaces
| null | null | null | null |
quant-ph physics.med-ph
|
http://creativecommons.org/licenses/by/4.0/
|
The first prototypes of quantum computers sparked interest in quantum
computing and the basic principles of quantum mechanics. The education project
on the physical bases of quantum computing is part of this context, based on
the experimental description with virtual methods of the physical
implementation of Di Vincenzo's first 5 principles. The computation process is
implemented as transformations of qubits encoded in the polarization of optical
photons. These transformations are implemented as quantum gates made as 3D
virtual objects using Blender. In detail, the models of: Laser Ar +, PBS, HWP /
QWP, BBO, APD, SMF, Control electronics are made. With the 3D models, a virtual
laboratory has been created within CoSpaces where it is possible to become
familiar with the basic processes of quantum computing: production of announced
photons, transformation of a qubit, measurement of a qubit, production of
entangled photons, transformation of two qubits, measure of two qubits. The
realization of physical models to be used in the metaverse could fill the
didactic void due to the absence of quantum optics laboratories.
|
[{'version': 'v1', 'created': 'Wed, 7 Sep 2022 17:37:56 GMT'}]
|
2022-09-08
|
[array(['Sisini', 'Francesco', ''], dtype=object)
array(['Ciminelli', 'Igor', ''], dtype=object)
array(['Bovino', 'Fabio Antonio', ''], dtype=object)]
|
18,668 |
hep-ph/9702233
|
Jose Alejandro Ayala
|
Alejandro Ayala (University of Illinois at Urbana-Champaign) and
Augusto Smerzi (SISSA, Trieste Italy)
|
Density and Boundary Effects on Pion Distributions in Relativistic
Heavy--Ion Collisions
|
Latex, 4 pages, 4 figures. Submitted to Phys. Lett. B
|
Phys.Lett. B405 (1997) 20-24
|
10.1016/S0370-2693(97)00627-8
| null |
hep-ph nucl-th
| null |
We compute the pion inclusive momentum distribution in a heavy-ion collision,
assuming thermal equilibrium and accounting for boundary effects at the time of
decoupling. We calculate the chemical potential corresponding to an average
pion multiplicity in central collisions and explore the consequences of having
the pion system produced close to the critical temperature for Bose-Einstein
condensation.
|
[{'version': 'v1', 'created': 'Mon, 3 Feb 1997 19:58:54 GMT'}]
|
2009-10-30
|
[array(['Ayala', 'Alejandro', '',
'University of Illinois at Urbana-Champaign'], dtype=object)
array(['Smerzi', 'Augusto', '', 'SISSA, Trieste Italy'], dtype=object)]
|
18,669 |
1502.05741
|
Oliver L\'opez-Corona PhD
|
O. L\'opez-Corona, P. Padilla, A. Huerta, D. Mustri-Trejo, K. Perez,
A. Ruiz, O. Vald\'es and F. Zamudio
|
Measuring social complexity and the emergence of cooperation from
entropic principles
|
6 pages, 1 figure
| null | null | null |
physics.soc-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Assessing quantitatively the state and dynamics of a social system is a very
difficult problem. It is of great importance for both practical and theoretical
reasons such as establishing the efficiency of social action programs,
detecting possible community needs or allocating resources. In this paper we
propose a new general theoretical framework for the study of social complexity,
based on the relation of complexity and entropy in combination with
evolutionary dynamics to asses the dynamics of the system. Imposing the second
law of thermodynamics, we study the conditions under which cooperation emerges
and demonstrate that it depends of relative importance of local and global
fitness. As cooperation is a central concept in sustainability, this
thermodynamic-informational approach allows new insights and means to asses it
using the concept of Helmholtz free energy. Finally we introduce a new set of
equations that consider the more general case where the social system change
both in time and space, and relate our findings to sustainability.
|
[{'version': 'v1', 'created': 'Thu, 19 Feb 2015 22:38:19 GMT'}
{'version': 'v2', 'created': 'Thu, 28 Jan 2016 22:12:44 GMT'}]
|
2016-02-01
|
[array(['López-Corona', 'O.', ''], dtype=object)
array(['Padilla', 'P.', ''], dtype=object)
array(['Huerta', 'A.', ''], dtype=object)
array(['Mustri-Trejo', 'D.', ''], dtype=object)
array(['Perez', 'K.', ''], dtype=object)
array(['Ruiz', 'A.', ''], dtype=object)
array(['Valdés', 'O.', ''], dtype=object)
array(['Zamudio', 'F.', ''], dtype=object)]
|
18,670 |
0911.1378
|
Roman Lutchyn
|
Roman M. Lutchyn, Enrico Rossi, S. Das Sarma
|
Spontaneous interlayer superfluidity in bilayer systems of cold polar
molecules
|
7 pages, 5 figures, final version
|
Phys. Rev. A 82, 061604(R) (2010)
|
10.1103/PhysRevA.82.061604
| null |
cond-mat.quant-gas cond-mat.str-el
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Quantum degenerate cold-atom gases provide a remarkable opportunity to study
strongly interacting systems. Recent experimental progress in producing
ultracold polar molecules with a net electric dipole moment opens up new
possibilities to realize novel quantum phases governed by the long-range and
anisotropic dipole-dipole interactions. In this work we predict the existence
of experimentally observable novel broken-symmetry states with spontaneous
interlayer coherence in cold polar molecules. These exotic states appear due to
strong repulsive interlayer interactions and exhibit properties of superfluids,
ferromagnets and excitonic condensates.
|
[{'version': 'v1', 'created': 'Sun, 8 Nov 2009 19:23:34 GMT'}
{'version': 'v2', 'created': 'Wed, 15 Dec 2010 01:44:15 GMT'}]
|
2010-12-16
|
[array(['Lutchyn', 'Roman M.', ''], dtype=object)
array(['Rossi', 'Enrico', ''], dtype=object)
array(['Sarma', 'S. Das', ''], dtype=object)]
|
18,671 |
1412.8557
|
Yu Zhang
|
Yu Zhang, Feng Pan, Yu-xin Liu, Yan-an Luo, and J. P. Draayer
|
The emergent dynamical symmetry at the triple point of nuclear
deformations
|
8 pages, 5 figures, 1 table
|
Physical Review C 90 (2014) 064318
|
10.1103/PhysRevC.90.064318
| null |
nucl-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Based on the boson realization of the Euclidean algebras, it is shown that
the five-dimensional Euclidean dynamical symmetry may emerge at the triple
point of the shape phase diagram of the interacting boson model, which thus
offers a symmetry-based understanding of this isolated point. It is further
shown that the low-lying dynamics in $^{108}$Pd, $^{134}$Ba, $^{64}$Zn, and
$^{114}$Cd may be dominated by the Euclidean dynamical symmetry.
|
[{'version': 'v1', 'created': 'Tue, 30 Dec 2014 03:55:52 GMT'}]
|
2014-12-31
|
[array(['Zhang', 'Yu', ''], dtype=object)
array(['Pan', 'Feng', ''], dtype=object)
array(['Liu', 'Yu-xin', ''], dtype=object)
array(['Luo', 'Yan-an', ''], dtype=object)
array(['Draayer', 'J. P.', ''], dtype=object)]
|
18,672 |
hep-th/0311094
|
Markus Quandt
|
Markus Quandt
|
Calculating Vacuum Energies in Quantum Field Theory
|
Talk given at 6th Workshop on "Quantum Field Theory under the
Influence of External Conditions" (QFEXT03), Norman, Oklahoma, 15-19 Sep.
2003. (8 pages LaTeX, 3 figures, uses Rinton-P9x6.cls)
| null | null |
UNITU-THEP-15/03
|
hep-th
| null |
A new approach to generalised Casimir type of problems is derived within the
context of renormalisable quantum field theory (QFT). We study the simplest
case of a massive fluctuating boson field coupled to a time-independent
background potential. We use analytic properties of scattering data to compute
the relevant Green's functions at imaginary momenta, which in turn yields a
simple and efficient method to compute (one-loop) vacuum energy densities in
QFT. Renormalisation is easily performed in the perturbative sector by
identifying low order Feynman diagrams with the first few Born approximation to
the Green's function. Numerical examples illustrate the efficiency of our
approach.
|
[{'version': 'v1', 'created': 'Tue, 11 Nov 2003 13:49:14 GMT'}]
|
2007-05-23
|
[array(['Quandt', 'Markus', ''], dtype=object)]
|
18,673 |
2102.05029
|
Yoni BenTov
|
Yoni BenTov
|
Schwinger-Keldysh path integral for the quantum harmonic oscillator
|
112 pages, 1 figure
| null | null | null |
hep-th cond-mat.stat-mech
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
I review the generating function for quantum-statistical mechanics, known as
the Feynman-Vernon influence functional, the decoherence functional, or the
Schwinger-Keldysh path integral. I describe a probability-conserving
$i\varepsilon$ prescription from a path-integral implementation of Lindblad
evolution. I also explain how to generalize the formalism to accommodate
out-of-time-ordered correlators (OTOCs), leading to a Larkin-Ovchinnikov path
integral. My goal is to provide step-by-step calculations of path integrals
associated to the harmonic oscillator.
|
[{'version': 'v1', 'created': 'Tue, 9 Feb 2021 18:47:32 GMT'}]
|
2021-02-10
|
[array(['BenTov', 'Yoni', ''], dtype=object)]
|
18,674 |
2203.09045
|
Biswajit Mitra Dr.
|
Biswajit Mitra, Sanjib Das
|
Construction of nearly pseudocompactification
| null | null | null | null |
math.GN
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A space is nearly pseudocompact if and only if $\upsilon X\backslash X$ is
dense in $\beta X\backslash X$. If we denote $K=cl_{\beta X}(\upsilon
X\backslash X)$, then $\delta X=X\cup(\beta X\backslash K)$ is referred by
Henriksen and Rayburn \cite{hr80} as nearly pseudocompact extension of $X$.
Henriksen and Rayburn studied the nearly pseudocompact extension using
different properties of $\beta X$. In this paper our main motivation is to
construct nearly pseudocompact extension of $X$ independently and not using any
kind of extension property of $\beta X$. An alternative construction of $\beta
X$ is made by taking the family of all $z$-ultrafilters on $X$ and then
topologized in a suitable way. In this paper we also adopted the similar idea
of constructing the $\delta X$ from the scratch, taking the collection of all
$z$-ultrafilters on $X$ of some kind, called $hz$-ultrafilters, together with
fixed $z$-ultrafilter and then be topologized in the similar way what we do in
the construction of $\beta X.$ We have further shown that the extension $\delta
X$ is unique with respect to certain properties.
|
[{'version': 'v1', 'created': 'Thu, 17 Mar 2022 02:52:53 GMT'}
{'version': 'v2', 'created': 'Fri, 25 Mar 2022 16:24:37 GMT'}]
|
2022-03-28
|
[array(['Mitra', 'Biswajit', ''], dtype=object)
array(['Das', 'Sanjib', ''], dtype=object)]
|
18,675 |
2209.03242
|
Erik Tonni
|
Mihail Mintchev, Erik Tonni
|
Modular conjugations in 2D conformal field theory and holographic bit
threads
|
49 pages, 15 figures
|
JHEP 12 (2022) 149
|
10.1007/JHEP12(2022)149
| null |
hep-th cond-mat.stat-mech math-ph math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study the geometric action of some modular conjugations in two dimensional
(2D) conformal field theories. We investigate the bipartition given by an
interval when the system is in the ground state, either on the line or on the
circle, and in the thermal Gibbs state on the line. We find that the
restriction of the corresponding inversion maps to a spatial slice is obtained
also in the gauge/gravity correspondence through the geodesic bit threads in a
constant time slice of the dual static asymptotically AdS background. For a CFT
in the thermal state on the line, the modular conjugation suggests the
occurrence of a second world which can be related through the geodesic bit
threads to the horizon of the BTZ black brane background. An inversion map is
constructed also for the massless Dirac fermion in the ground state and on the
line bipartite by the union of two disjoint intervals.
|
[{'version': 'v1', 'created': 'Wed, 7 Sep 2022 15:51:35 GMT'}]
|
2023-04-10
|
[array(['Mintchev', 'Mihail', ''], dtype=object)
array(['Tonni', 'Erik', ''], dtype=object)]
|
18,676 |
1711.02687
|
Simon Benjamin
|
Simon C. Benjamin, Liming Zhao, Joseph F. Fitzsimons
|
Measurement-driven quantum computing: Performance of a 3-SAT solver
|
16 pages, 9 figs
| null | null | null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We investigate the performance of a quantum algorithm for solving classical
3-SAT problems. A cycle of post-selected measurements drives the computer's
register monotonically toward a steady state which is correlated to the
classical solution(s). An internal parameter $\theta$ determines both the
degree of correlation and the success probability, thus controlling the
algorithm's runtime. Optionally this parameter can be gradually evolved during
the algorithm's execution to create a Zeno-like effect; this can be viewed as
an adiabatic evolution of a Hamiltonian which remains frustration-free at all
points, and we lower-bound the corresponding gap. In exact numerical
simulations of small systems up to 34 qubits our approach competes favourably
with a high-performing classical 3-SAT solver, which itself outperforms a
brute-force application of Grover's search.
|
[{'version': 'v1', 'created': 'Tue, 7 Nov 2017 19:06:25 GMT'}]
|
2017-11-09
|
[array(['Benjamin', 'Simon C.', ''], dtype=object)
array(['Zhao', 'Liming', ''], dtype=object)
array(['Fitzsimons', 'Joseph F.', ''], dtype=object)]
|
18,677 |
1910.13195
|
Shiori Hironaka
|
Shiori Hironaka and Mitsuo Yoshida and Kyoji Umemura
|
User's Centrality Analysis for Home Location Estimation
|
published at ABCSS 2019 on WI 2019
| null |
10.1145/3358695.3360930
| null |
cs.SI
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
User attributes, such as home location, are useful for many applications.
Many researchers have been tackling how to estimate users' home locations using
relationships among users. It is known that the home locations of certain
users, such as celebrities, are hard to estimate using relationships. However,
because estimating the home locations of all celebrities is not actually hard,
it is important to clarify the characteristics of users whose home locations
are hard to estimate. We analyze whether centralities, which represent users'
characteristics, and the tendency to have the same home locations as friends
are related. The results indicate that PageRank and HITS scores are related to
whether users have the same home location as friends, and that users with
higher HITS scores have the same home location as their friends less often.
This result indicates that there are two types of users whose home locations
are difficult to estimate: hub users who follow many celebrities and authority
users who are celebrities.
|
[{'version': 'v1', 'created': 'Tue, 29 Oct 2019 11:06:14 GMT'}]
|
2019-10-30
|
[array(['Hironaka', 'Shiori', ''], dtype=object)
array(['Yoshida', 'Mitsuo', ''], dtype=object)
array(['Umemura', 'Kyoji', ''], dtype=object)]
|
18,678 |
2002.11890
|
Bo Peng
|
Bo Peng, Zhiyun Ren, Srinivasan Parthasarathy and Xia Ning
|
HAM: Hybrid Associations Models for Sequential Recommendation
|
This paper has been accepted by IEEE Transactions on Knowledge and
Data Engineering (TKDE)
| null | null | null |
cs.IR cs.LG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Sequential recommendation aims to identify and recommend the next few items
for a user that the user is most likely to purchase/review, given the user's
purchase/rating trajectories. It becomes an effective tool to help users select
favorite items from a variety of options. In this manuscript, we developed
hybrid associations models (HAM) to generate sequential recommendations using
three factors: 1) users' long-term preferences, 2) sequential, high-order and
low-order association patterns in the users' most recent purchases/ratings, and
3) synergies among those items. HAM uses simplistic pooling to represent a set
of items in the associations, and element-wise product to represent item
synergies of arbitrary orders. We compared HAM models with the most recent,
state-of-the-art methods on six public benchmark datasets in three different
experimental settings. Our experimental results demonstrate that HAM models
significantly outperform the state of the art in all the experimental settings,
with an improvement as much as 46.6%. In addition, our run-time performance
comparison in testing demonstrates that HAM models are much more efficient than
the state-of-the-art methods, and are able to achieve significant speedup as
much as 139.7 folds.
|
[{'version': 'v1', 'created': 'Thu, 27 Feb 2020 03:04:16 GMT'}
{'version': 'v2', 'created': 'Fri, 3 Jul 2020 21:09:36 GMT'}
{'version': 'v3', 'created': 'Mon, 4 Jan 2021 14:14:41 GMT'}]
|
2021-01-05
|
[array(['Peng', 'Bo', ''], dtype=object)
array(['Ren', 'Zhiyun', ''], dtype=object)
array(['Parthasarathy', 'Srinivasan', ''], dtype=object)
array(['Ning', 'Xia', ''], dtype=object)]
|
18,679 |
1604.06855
|
Kye-Ryong Sin
|
Yong-U Ri, Young-Hui Pyon, Kye-Ryong Sin
|
Determination of Oxygen Saturation and Photoplethysmogram from Near
Infrared Scattering Images
|
12 pages, 10 figures
| null | null | null |
physics.med-ph physics.chem-ph physics.optics
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The near infrared scattering images of human muscle include some information
on bloodstream and hemoglobin concentration according to skin depth and time.
This paper addressed a method of determining oxygen saturation and
photoplethysmogram from the near infrared (NIR) scattering images of muscle.
Depending on the modified Beer-Lambert Law and the diffuse scattering model of
muscular tissue, we determined an extinction coefficient matrix of hemoglobin
from the near infrared scattering images and analyzed distribution of oxygen
saturation of muscle with a depth from the extinction coefficient matrix. And
we determined a dynamic attenuation variation curve with respect to fragmentary
image frames sensitive to bloodstream from scattering image frames of muscle
with time and then obtained the photoplethysmogram and heart rate by Fourier
transformation and inverse transformation. This method based on the NIR
scattering images can be applied in measurement of an average oxygen saturation
and photoplethysmogram even in local region of optically heterogeneous muscle
and skin.
|
[{'version': 'v1', 'created': 'Sat, 23 Apr 2016 03:14:59 GMT'}]
|
2016-04-26
|
[array(['Ri', 'Yong-U', ''], dtype=object)
array(['Pyon', 'Young-Hui', ''], dtype=object)
array(['Sin', 'Kye-Ryong', ''], dtype=object)]
|
18,680 |
1310.7472
|
Indranil Biswas
|
Indranil Biswas and Tom\'as L. G\'omez
|
Semistability of Principal Bundles on a K\"ahler Manifold with a
Non-Connected Structure Group
| null |
SIGMA 10 (2014), 013, 7 pages
|
10.3842/SIGMA.2014.013
| null |
math.DG
|
http://creativecommons.org/licenses/by-nc-sa/3.0/
|
We investigate principal $G$-bundles on a compact K\"ahler manifold, where
$G$ is a complex algebraic group such that the connected component of it
containing the identity element is reductive. Defining (semi)stability of such
bundles, it is shown that a principal $G$-bundle $E_G$ admits an
Einstein-Hermitian connection if and only if $E_G$ is polystable. We give an
equivalent formulation of the (semi)stability condition. A question is to
compare this definition with that of math.AG/0506511.
|
[{'version': 'v1', 'created': 'Mon, 28 Oct 2013 16:03:30 GMT'}
{'version': 'v2', 'created': 'Wed, 5 Feb 2014 16:44:17 GMT'}
{'version': 'v3', 'created': 'Wed, 12 Feb 2014 05:38:01 GMT'}]
|
2014-02-13
|
[array(['Biswas', 'Indranil', ''], dtype=object)
array(['Gómez', 'Tomás L.', ''], dtype=object)]
|
18,681 |
1910.01179
|
Eric Zhan
|
Eric Zhan, Albert Tseng, Yisong Yue, Adith Swaminathan, Matthew
Hausknecht
|
Learning Calibratable Policies using Programmatic Style-Consistency
| null | null | null | null |
cs.LG stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study the problem of controllable generation of long-term sequential
behaviors, where the goal is to calibrate to multiple behavior styles
simultaneously. In contrast to the well-studied areas of controllable
generation of images, text, and speech, there are two questions that pose
significant challenges when generating long-term behaviors: how should we
specify the factors of variation to control, and how can we ensure that the
generated behavior faithfully demonstrates combinatorially many styles? We
leverage programmatic labeling functions to specify controllable styles, and
derive a formal notion of style-consistency as a learning objective, which can
then be solved using conventional policy learning approaches. We evaluate our
framework using demonstrations from professional basketball players and agents
in the MuJoCo physics environment, and show that existing approaches that do
not explicitly enforce style-consistency fail to generate diverse behaviors
whereas our learned policies can be calibrated for up to 1024 distinct style
combinations.
|
[{'version': 'v1', 'created': 'Wed, 2 Oct 2019 19:34:51 GMT'}
{'version': 'v2', 'created': 'Sat, 8 Feb 2020 00:26:26 GMT'}
{'version': 'v3', 'created': 'Thu, 16 Jul 2020 04:42:13 GMT'}]
|
2020-07-17
|
[array(['Zhan', 'Eric', ''], dtype=object)
array(['Tseng', 'Albert', ''], dtype=object)
array(['Yue', 'Yisong', ''], dtype=object)
array(['Swaminathan', 'Adith', ''], dtype=object)
array(['Hausknecht', 'Matthew', ''], dtype=object)]
|
18,682 |
2102.11252
|
Micha{\l} Daniluk
|
Micha{\l} Daniluk, Barbara Rychalska, Konrad Go{\l}uchowski, Jacek
D\k{a}browski
|
Modeling Multi-Destination Trips with Sketch-Based Model
| null | null | null | null |
cs.LG stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The recently proposed EMDE (Efficient Manifold Density Estimator) model
achieves state of-the-art results in session-based recommendation. In this work
we explore its application to Booking Data Challenge competition. The aim of
the challenge is to make the best recommendation for the next destination of a
user trip, based on dataset with millions of real anonymized accommodation
reservations. We achieve 2nd place in this competition. First, we use Cleora -
our graph embedding method - to represent cities as a directed graph and learn
their vector representation. Next, we apply EMDE to predict the next user
destination based on previously visited cities and some features associated
with each trip. We release the source code at:
https://github.com/Synerise/booking-challenge.
|
[{'version': 'v1', 'created': 'Mon, 22 Feb 2021 18:36:11 GMT'}
{'version': 'v2', 'created': 'Tue, 23 Feb 2021 07:47:16 GMT'}
{'version': 'v3', 'created': 'Thu, 4 Mar 2021 20:19:57 GMT'}]
|
2021-03-08
|
[array(['Daniluk', 'Michał', ''], dtype=object)
array(['Rychalska', 'Barbara', ''], dtype=object)
array(['Gołuchowski', 'Konrad', ''], dtype=object)
array(['Dąbrowski', 'Jacek', ''], dtype=object)]
|
18,683 |
1505.01352
|
Ilya Ponomarenko
|
Gang Chen and Mikhail Muzychuk and Ilya Ponomarenko
|
The Schur-Wielandt theory for central S-rings
|
10 pages
|
Algebra and Logic, 55, No.1 (2016), 57-73
| null | null |
math.GR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Two basic results on the S-rings over an abelian group are the Schur theorem
on multipliers and the Wielandt theorem on primitive S-rings over groups with a
cyclic Sylow subgroup. None of these theorems is directly generalized to the
non-abelian case. Nevertheless, we prove that they are true for the central
S-rings, i.e., for those which are contained in the center of the group ring of
the underlying group (such S-rings naturally arise in the supercharacter
theory). We also generalize the concept of a B-group introduced by Wielandt,
and show that any Camina group is a generalized B-group whereas with few
exceptions, no simple group is of this type.
|
[{'version': 'v1', 'created': 'Wed, 6 May 2015 12:59:43 GMT'}]
|
2019-02-01
|
[array(['Chen', 'Gang', ''], dtype=object)
array(['Muzychuk', 'Mikhail', ''], dtype=object)
array(['Ponomarenko', 'Ilya', ''], dtype=object)]
|
18,684 |
0811.4599
|
Andres Collinucci
|
Andres Collinucci, Maximilian Kreuzer, Christoph Mayrhofer and
Nils-Ole Walliser
|
Four-modulus "Swiss Cheese" chiral models
|
40 pages, 10 figures, clarifying comments added, minor mistakes
corrected
|
JHEP 0907:074,2009
|
10.1088/1126-6708/2009/07/074
| null |
hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study the 'Large Volume Scenario' on explicit, new, compact, four-modulus
Calabi-Yau manifolds. We pay special attention to the chirality problem pointed
out by Blumenhagen, Moster and Plauschinn. Namely, we thoroughly analyze the
possibility of generating neutral, non-perturbative superpotentials from
Euclidean D3-branes in the presence of chirally intersecting D7-branes. We find
that taking proper account of the Freed-Witten anomaly on non-spin cycles and
of the Kaehler cone conditions imposes severe constraints on the models.
Nevertheless, we are able to create setups where the constraints are solved,
and up to three moduli are stabilized.
|
[{'version': 'v1', 'created': 'Fri, 28 Nov 2008 18:49:10 GMT'}
{'version': 'v2', 'created': 'Wed, 13 May 2009 20:42:59 GMT'}
{'version': 'v3', 'created': 'Wed, 24 Jun 2009 12:59:26 GMT'}]
|
2009-07-24
|
[array(['Collinucci', 'Andres', ''], dtype=object)
array(['Kreuzer', 'Maximilian', ''], dtype=object)
array(['Mayrhofer', 'Christoph', ''], dtype=object)
array(['Walliser', 'Nils-Ole', ''], dtype=object)]
|
18,685 |
2111.03351
|
Thorsten Aull
|
Thorsten Aull, Igor V. Maznichenko, Sergey Ostanin, Ersoy
\c{S}a\c{s}{\i}o\u{g}lu, and Ingrid Mertig
|
Externally controlled and switchable 2D electron gas at the Rashba
interface between ferroelectrics and heavy $d$ metals
|
12 pages, 11 figures
|
Phys. Rev. Research 3, 043110 (2021)
|
10.1103/PhysRevResearch.3.043110
| null |
cond-mat.mes-hall cond-mat.mtrl-sci
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Strong spin-orbit coupling in noncentrosymmetric materials and interfaces
results in remarkable physical phenomena, such as nontrivial spin textures,
which may exhibit Rashba, Dresselhaus, and other intricated configurations.
This provides a promising basis for nonvolatile spintronic devices and further
implications. Here, we simulate from first principles a two-dimensional
electron gas in ultrathin platinum and palladium layers grown on ferroelectric
PbTiO$_3$(001). The latter allows, in principle, to switch and control the
spin-to-charge conversion by the polarization reversal. We show how the band
structure and its Rashba splitting differ in the Pt and Pd overlayers and how
these electronic features change with increasing the overlayer thickness and
upon reversal of polarization. Besides, for both overlayers, we simulated their
current-voltage ($I-V$) characteristics, the resistance of which upon the
polarization reversal changes between 20% and several hundred percent. The
reported findings can be used to model directly the Rashba-Edelstein effect.
|
[{'version': 'v1', 'created': 'Fri, 5 Nov 2021 09:46:20 GMT'}
{'version': 'v2', 'created': 'Mon, 8 Nov 2021 09:29:08 GMT'}]
|
2021-11-15
|
[array(['Aull', 'Thorsten', ''], dtype=object)
array(['Maznichenko', 'Igor V.', ''], dtype=object)
array(['Ostanin', 'Sergey', ''], dtype=object)
array(['Şaşıoğlu', 'Ersoy', ''], dtype=object)
array(['Mertig', 'Ingrid', ''], dtype=object)]
|
18,686 |
hep-th/9711096
|
Poul Henrik Damgaard
|
Poul H. Damgaard, Shinsuke M. Nishigaki
|
Universal Massive Spectral Correlators and QCD_3
|
5 pages, REVTeX. Misprint corrected
|
Phys.Rev. D57 (1998) 5299-5302
|
10.1103/PhysRevD.57.5299
|
NSF-ITP-97-140, NBI-HE-97-59
|
hep-th
| null |
Based on random matrix theory in the unitary ensemble, we derive the
double-microscopic massive spectral correlators corresponding to the Dirac
operator of QCD_3 with an even number of fermions N_f. We prove that these
spectral correlators are universal, and demonstrate that they satisfy exact
massive spectral sum rules of QCD_3 in a phase where flavor symmetries are
spontaneously broken according to U(N_f) -> U(N_f/2) x U(N_f/2).
|
[{'version': 'v1', 'created': 'Thu, 13 Nov 1997 15:29:53 GMT'}
{'version': 'v2', 'created': 'Mon, 9 Feb 1998 08:42:54 GMT'}]
|
2009-10-30
|
[array(['Damgaard', 'Poul H.', ''], dtype=object)
array(['Nishigaki', 'Shinsuke M.', ''], dtype=object)]
|
18,687 |
hep-ph/0502172
|
George Lazarides
|
George Lazarides (Aristotle U. of Thessaloniki)
|
Density perturbations from both the inflaton and the curvaton
|
Talk given at the Workshop "The density perturbation in the
universe", 25-26 June 2004, Athens, Greece (to appear in the proceedings), 12
pages including 4 figures, uses espcrc2.sty
| null |
10.1016/j.nuclphysbps.2005.04.054
|
UT-STPD-1/05
|
hep-ph
| null |
We consider a supersymmetric grand unified model which leads to hybrid
inflation and solves the strong CP and mu problems via a Peccei-Quinn symmetry,
with the Peccei-Quinn field acting as a curvaton generating together with the
inflaton the curvature perturbation. The model yields an isocurvature
perturbation too of mixed correlation with the adiabatic one. Two choices of
parameters are confronted with the Wilkinson microwave anisotropy probe and
other cosmic microwave background radiation data. For the choice giving the
best fitting, the curvaton contribution to the amplitude of the adiabatic
perturbation must be smaller than 67% at 95% confidence level and the best-fit
power spectra are dominated by the adiabatic inflaton contribution. This case
is disfavored relative to the pure inflaton scale-invariant case with odds of
50 to 1. For the second choice, the adiabatic mode is dominated by the
curvaton, but this case is strongly disfavored relative to the pure inflaton
case (with odds of 10^7 to 1). Thus, in this model, the perturbations must be
dominated by the adiabatic component from the inflaton.
|
[{'version': 'v1', 'created': 'Fri, 18 Feb 2005 16:44:38 GMT'}]
|
2009-11-11
|
[array(['Lazarides', 'George', '', 'Aristotle U. of Thessaloniki'],
dtype=object) ]
|
18,688 |
1603.08183
|
Naoya Miyazaki
|
Tadashi Taniguchi, Naoya Miyazaki and Yuji Hirota
|
Formal Deformation Quantization for Super Poisson Structures on Super
Calabi-Yau Twistor Spaces
| null | null | null | null |
math-ph math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
It is known that Wolf constructed a lot of examples of Super Calabi-Yau
twistor spaces. We would like to introduce super Poisson structures on them via
super twistor double fibrations. Moreover we define the structure of
deformation quantization for such super Poisson manifolds.
|
[{'version': 'v1', 'created': 'Sun, 27 Mar 2016 07:22:16 GMT'}
{'version': 'v2', 'created': 'Tue, 20 Jun 2017 01:35:40 GMT'}]
|
2017-06-21
|
[array(['Taniguchi', 'Tadashi', ''], dtype=object)
array(['Miyazaki', 'Naoya', ''], dtype=object)
array(['Hirota', 'Yuji', ''], dtype=object)]
|
18,689 |
2101.07459
|
Sergei Zharikov
|
S. Zharikov, D. Zyuzin, Yu. Shibanov, A. Kirichenko, R. E. Mennickent,
S. Geier, A. Cabrera-Lavers
|
PSR B0656+14: the unified outlook from the infrared to X-rays
|
18 pages, 9 figures, Accepted for publication in MNRAS
| null |
10.1093/mnras/stab157
| null |
astro-ph.HE astro-ph.SR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We report detection of PSR B0656$+$14 with the Gran Telescopio Canarias in
narrow optical $F657$, $F754$, $F802$, and $F902$ and near-infrared $JHK_s$
bands. The pulsar detection in the $K_s$ band extends its spectrum to 2.2
$\mu$m and confirms its flux increase towards the infrared. We also present a
thorough analysis of the optical spectrum obtained by us with the VLT. For a
consistency check, we revised the pulsar near-infrared and narrow-band
photometry obtained with the \textit{HST}. We find no narrow spectral lines in
the optical spectrum. We compile available near-infrared-optical-UV and
archival 0.3-20keV X-ray data and perform a self-consistent analysis of the
rotation phase-integrated spectrum of the pulsar using unified spectral models.
The spectrum is best fitted by the four-component model including two
blackbodies, describing the thermal emission from the neutron star surface and
its hot polar cap, the broken power-law, originating from the pulsar
magnetosphere, and an absorption line near $\sim$0.5 keV detected previously.
The fit provides better constraints on the model parameters than using only a
single spectral domain. The derived surface temperature is
$T_{NS}^{\infty}=7.9(3)\times10^5$K. The intrinsic radius (7.8-9.9 km) of the
emitting region is smaller than a typical neutron star radius (13km) and
suggests a nonuniform temperature distribution over the star surface. In
contrast, the derived radius of the hot polar cap is about twice as large as
the `canonical' one. The spectrum of the nonthermal emission steepens from the
optical to X-rays and has a break near 0.1 keV. The X-ray data suggest the
presence of another absorption line near 0.3keV.
|
[{'version': 'v1', 'created': 'Tue, 19 Jan 2021 04:26:35 GMT'}]
|
2021-01-27
|
[array(['Zharikov', 'S.', ''], dtype=object)
array(['Zyuzin', 'D.', ''], dtype=object)
array(['Shibanov', 'Yu.', ''], dtype=object)
array(['Kirichenko', 'A.', ''], dtype=object)
array(['Mennickent', 'R. E.', ''], dtype=object)
array(['Geier', 'S.', ''], dtype=object)
array(['Cabrera-Lavers', 'A.', ''], dtype=object)]
|
18,690 |
0801.2815
|
Jerome Kaminker
|
Ronald G. Douglas and Jerome Kaminker
|
Spectral multiplicity and odd K-theory
|
Typos fixed and application improved
| null | null | null |
math.KT
| null |
In this paper we begin a study of the space of unbounded self-adjoint
Fredholm operators as a classifying space for K^{1}(X), with the goal of
incorporating the information in the eigenspaces and eigenvalues of the
operators. In particular, the role that the multiplicity of eigenvalues plays
is developed here.
|
[{'version': 'v1', 'created': 'Fri, 18 Jan 2008 04:38:27 GMT'}
{'version': 'v2', 'created': 'Fri, 30 May 2008 22:05:38 GMT'}]
|
2008-05-31
|
[array(['Douglas', 'Ronald G.', ''], dtype=object)
array(['Kaminker', 'Jerome', ''], dtype=object)]
|
18,691 |
1008.2218
|
Christopher Paciorek
|
Christopher J. Paciorek
|
Combining spatial information sources while accounting for systematic
errors in proxies
|
5 figures, 2 tables
|
Journal of the Royal Statistical Society, Series C (Applied
Statistics) 61: 429-451 (2012)
|
10.1111/j.1467-9876.2011.01035.x
| null |
stat.ME stat.AP stat.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Environmental research increasingly uses high-dimensional remote sensing and
numerical model output to help fill space-time gaps between traditional
observations. Such output is often a noisy proxy for the process of interest.
Thus one needs to separate and assess the signal and noise (often called
discrepancy) in the proxy given complicated spatio-temporal dependencies. Here
I extend a popular two-likelihood hierarchical model using a more flexible
representation for the discrepancy. I employ the little-used Markov random
field approximation to a thin plate spline, which can capture small-scale
discrepancy in a computationally efficient manner while better modeling smooth
processes than standard conditional auto-regressive models. The increased
flexibility reduces identifiability, but the lack of identifiability is
inherent in the scientific context. I model particulate matter air pollution
using satellite aerosol and atmospheric model output proxies. The estimated
discrepancies occur at a variety of spatial scales, with small-scale
discrepancy particularly important. The examples indicate little predictive
improvement over modeling the observations alone. Similarly, in simulations
with an informative proxy, the presence of discrepancy and resulting
identifiability issues prevent improvement in prediction. The results highlight
but do not resolve the critical question of how best to use proxy information
while minimizing the potential for proxy-induced error.
|
[{'version': 'v1', 'created': 'Thu, 12 Aug 2010 21:07:14 GMT'}
{'version': 'v2', 'created': 'Tue, 31 Aug 2010 18:04:49 GMT'}
{'version': 'v3', 'created': 'Tue, 13 Sep 2011 04:57:59 GMT'}]
|
2012-04-30
|
[array(['Paciorek', 'Christopher J.', ''], dtype=object)]
|
18,692 |
2102.06903
|
Qing Lin
|
Qing Lin
|
Proposal of a Geiger-type Single-Phase Liquid Xenon Time Projection
Chamber as Potential Detector Technique for Dark Matter Direct Search
|
21 pages, 15 figures
| null |
10.1088/1748-0221/16/08/P08011
| null |
physics.ins-det hep-ex
|
http://creativecommons.org/licenses/by/4.0/
|
Dual phase time projection chamber using liquid xenon as target material is
one of most successful detectors for dark matter direct search, and has
improved the sensitivities of searching for weakly interacting massive
particles by almost five orders of magnitudes in past several decades. However,
it still remains a great challenge for dual phase liquid xenon time projection
chamber to be used as the detector in next-generation dark matter search
experiments ($\sim$ 50 tonne sensitive mass), in terms of reaching sufficiently
high field strength for drifting electrons, and sufficiently low background
rate. Here we propose a single phase liquid xenon time projection chamber with
detector geometry similar to a Geiger counter, as a potential detector
technique for future dark matter search, which trades off field uniformity for
less isolated charge signals. Preliminary field simulation and signal
reconstruction study have shown that such single phase time projection chamber
is technically feasible and can have sufficiently good signal reconstruction
performance for dark matter direct search.
|
[{'version': 'v1', 'created': 'Sat, 13 Feb 2021 11:30:33 GMT'}
{'version': 'v2', 'created': 'Mon, 22 Feb 2021 07:43:45 GMT'}
{'version': 'v3', 'created': 'Mon, 10 May 2021 03:42:16 GMT'}
{'version': 'v4', 'created': 'Wed, 2 Jun 2021 09:25:01 GMT'}
{'version': 'v5', 'created': 'Thu, 17 Jun 2021 03:02:29 GMT'}]
|
2021-09-01
|
[array(['Lin', 'Qing', ''], dtype=object)]
|
18,693 |
1804.07841
|
L. Andrew Wray
|
Yishuai Xu, Guodong Jiang, Janet Chiu, Lin Miao, Erica Kotta, Yutan
Zhang, Rudro R. Biswas, and L. Andrew Wray
|
Connection topology of step edge state bands at the surface of a three
dimensional topological insulator
|
Text and two appendices (4+3 figures)
| null |
10.1088/1367-2630/aacef6
| null |
cond-mat.mtrl-sci
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Topological insulators in the Bi$_2$Se$_3$ family manifest helical Dirac
surface states that span the topologically ordered bulk band gap. Recent
scanning tunneling microscopy measurements have discovered additional states in
the bulk band gap of Bi$_2$Se$_3$ and Bi$_2$Te$_3$, localized at one
dimensional step edges. Here numerical simulations of a topological insulator
surface are used to explore the phenomenology of edge state formation at the
single-quintuple-layer step defects found ubiquitously on these materials. The
modeled one dimensional edge states are found to exhibit a stable topological
connection to the two dimensional surface state Dirac point.
|
[{'version': 'v1', 'created': 'Fri, 20 Apr 2018 21:56:50 GMT'}]
|
2018-08-01
|
[array(['Xu', 'Yishuai', ''], dtype=object)
array(['Jiang', 'Guodong', ''], dtype=object)
array(['Chiu', 'Janet', ''], dtype=object)
array(['Miao', 'Lin', ''], dtype=object)
array(['Kotta', 'Erica', ''], dtype=object)
array(['Zhang', 'Yutan', ''], dtype=object)
array(['Biswas', 'Rudro R.', ''], dtype=object)
array(['Wray', 'L. Andrew', ''], dtype=object)]
|
18,694 |
2306.07946
|
Eltayeb Ahmed
|
Eltayeb Ahmed, Diana Mincu, Lauren Harrell, Katherine Heller,
Subhrajit Roy
|
STUDY: Socially Aware Temporally Casual Decoder Recommender Systems
|
15 pages, 5 figures
| null | null | null |
cs.SI cs.AI cs.IR
|
http://creativecommons.org/licenses/by/4.0/
|
With the overwhelming amount of data available both on and offline today,
recommender systems have become much needed to help users find items tailored
to their interests. When social network information exists there are methods
that utilize this information to make better recommendations, however the
methods are often clunky with complex architectures and training procedures.
Furthermore many of the existing methods utilize graph neural networks which
are notoriously difficult to train. To address this, we propose Socially-aware
Temporally caUsal Decoder recommender sYstems (STUDY). STUDY does joint
inference over groups of users who are adjacent in the social network graph
using a single forward pass of a modified transformer decoder network. We test
our method in a school-based educational content setting, using classroom
structure to define social networks. Our method outperforms both social and
sequential methods while maintaining the design simplicity of a single
homogeneous network that models all interactions in the data. We also carry out
ablation studies to understand the drivers of our performance gains and find
that our model depends on leveraging a social network structure that
effectively models the similarities in user behavior.
|
[{'version': 'v1', 'created': 'Fri, 2 Jun 2023 14:47:56 GMT'}]
|
2023-06-14
|
[array(['Ahmed', 'Eltayeb', ''], dtype=object)
array(['Mincu', 'Diana', ''], dtype=object)
array(['Harrell', 'Lauren', ''], dtype=object)
array(['Heller', 'Katherine', ''], dtype=object)
array(['Roy', 'Subhrajit', ''], dtype=object)]
|
18,695 |
hep-ex/9911038
|
Andrew Kirk
|
The WA102 Collaboration, D. Barberis, et al
|
A study of the etapipi channel produced in central pp interactions at
450 GeV/c
|
15 pages, Latex, 4 Figures Branching ratio a2pi /f2 eta corrected
|
Phys.Lett.B471:435-439,2000
|
10.1016/S0370-2693(99)01394-5
| null |
hep-ex
| null |
The reaction pp -> pf (eta pi pi) ps has been studied at 450 GeV/c. There is
clear evidence for an a2(1320)pi decay mode of the eta2(1645) and eta2(1870).
In addition, there is evidence for an a0(980)pi$ decay mode of both resonances
and an f2(1270)eta decay mode of the eta2(1870). No evidence is found for a JPC
= 2++ a2(1320)pi wave.
|
[{'version': 'v1', 'created': 'Fri, 26 Nov 1999 13:22:27 GMT'}
{'version': 'v2', 'created': 'Fri, 3 Dec 1999 11:11:53 GMT'}]
|
2008-11-26
|
[array(['The WA102 Collaboration', '', ''], dtype=object)
array(['Barberis', 'D.', ''], dtype=object)]
|
18,696 |
2203.11471
|
Yu Zhan
|
Yu Zhan, Fenghai Li, Renliang Weng, Wongun Choi
|
Ray3D: ray-based 3D human pose estimation for monocular absolute 3D
localization
|
Accepted by CVPR 2022
| null | null | null |
cs.CV
|
http://creativecommons.org/licenses/by-nc-sa/4.0/
|
In this paper, we propose a novel monocular ray-based 3D (Ray3D) absolute
human pose estimation with calibrated camera. Accurate and generalizable
absolute 3D human pose estimation from monocular 2D pose input is an ill-posed
problem. To address this challenge, we convert the input from pixel space to 3D
normalized rays. This conversion makes our approach robust to camera intrinsic
parameter changes. To deal with the in-the-wild camera extrinsic parameter
variations, Ray3D explicitly takes the camera extrinsic parameters as an input
and jointly models the distribution between the 3D pose rays and camera
extrinsic parameters. This novel network design is the key to the outstanding
generalizability of Ray3D approach. To have a comprehensive understanding of
how the camera intrinsic and extrinsic parameter variations affect the accuracy
of absolute 3D key-point localization, we conduct in-depth systematic
experiments on three single person 3D benchmarks as well as one synthetic
benchmark. These experiments demonstrate that our method significantly
outperforms existing state-of-the-art models. Our code and the synthetic
dataset are available at https://github.com/YxZhxn/Ray3D .
|
[{'version': 'v1', 'created': 'Tue, 22 Mar 2022 05:42:31 GMT'}
{'version': 'v2', 'created': 'Wed, 30 Mar 2022 06:29:45 GMT'}
{'version': 'v3', 'created': 'Thu, 27 Oct 2022 06:40:16 GMT'}]
|
2022-10-28
|
[array(['Zhan', 'Yu', ''], dtype=object)
array(['Li', 'Fenghai', ''], dtype=object)
array(['Weng', 'Renliang', ''], dtype=object)
array(['Choi', 'Wongun', ''], dtype=object)]
|
18,697 |
1806.01194
|
Alok Pan
|
Shouvik Ghorai and A. K. Pan
|
Optimal quantum preparation contextuality in $n$-bit parity-oblivious
multiplexing task
|
8 pages
|
Phys. Rev. A 98, 032110 (2018)
|
10.1103/PhysRevA.98.032110
| null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In [ PRL, 102, 010401 (2009)], Spekkens et al., have shown that quantum
preparation contextuality can power the parity-oblivious multiplexing (POM)
task. The bound on the optimal success probability of $n$-bit POM task
performed with the classical resources was shown to be the \textit{same} as in
a preparation non-contextual theory. This non-contextual bound is violated if
the task is performed with quantum resources. While in $2$-bit POM task the
optimal quantum success probability is achieved, in 3-bit case optimality was
left as an open question. In this paper, we show that the quantum success
probability of a $n$-bit POM task is solely dependent on a suitable
$2^{n-1}\times n$ Bell's inequality and optimal violation of it optimizes the
success probability of the said POM task. Further, we discuss how the degree of
quantum preparation contextuality restricts the amount of quantum violations of
Bell's inequalities, and consequently the success probability of a POM task.
|
[{'version': 'v1', 'created': 'Mon, 4 Jun 2018 16:38:01 GMT'}]
|
2018-09-19
|
[array(['Ghorai', 'Shouvik', ''], dtype=object)
array(['Pan', 'A. K.', ''], dtype=object)]
|
18,698 |
1803.02484
|
Daniel Price
|
Daniel J. Price (Monash), Nicolas Cuello (PUC), Christophe Pinte
(Monash), Daniel Mentiplay (Monash), Simon Casassus (UChile), Valentin
Christiaens (UChile), Grant M. Kennedy (Warwick), Jorge Cuadra (PUC),
Sebastian Perez M. (UChile), Sebastian Marino (IoA), Philip J. Armitage
(UColorado), Alice Zurlo (UChile), Attila Juhasz (IoA), Enrico Ragusa
(Milan), Guillaume Laibe (ENS-Lyon) and Giuseppe Lodato (Milan)
|
Circumbinary, not transitional: On the spiral arms, cavity, shadows,
fast radial flows, streamers and horseshoe in the HD142527 disc
|
16 pages, 12 figures, accepted to MNRAS. Movies at
http://users.monash.edu.au/~dprice/pubs/HD142527/
| null |
10.1093/mnras/sty647
| null |
astro-ph.SR astro-ph.EP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present 3D hydrodynamical models of the HD142527 protoplanetary disc, a
bright and well studied disc that shows spirals and shadows in scattered light
around a 100 au gas cavity, a large horseshoe dust structure in mm continuum
emission, together with mysterious fast radial flows and streamers seen in gas
kinematics. By considering several possible orbits consistent with the observed
arc, we show that all of the main observational features can be explained by
one mechanism - the interaction between the disc and the observed binary
companion. We find that the spirals, shadows and horseshoe are only produced in
the correct position angles by a companion on an inclined and eccentric orbit
approaching periastron - the 'red' family from Lacour et al. (2016). Dust-gas
simulations show radial and azimuthal concentration of dust around the cavity,
consistent with the observed horseshoe. The success of this model in the
HD142527 disc suggests other mm-bright transition discs showing cavities,
spirals and dust asymmetries may also be explained by the interaction with
central companions.
|
[{'version': 'v1', 'created': 'Wed, 7 Mar 2018 00:02:21 GMT'}]
|
2018-03-28
|
[array(['Price', 'Daniel J.', '', 'Monash'], dtype=object)
array(['Cuello', 'Nicolas', '', 'PUC'], dtype=object)
array(['Pinte', 'Christophe', '', 'Monash'], dtype=object)
array(['Mentiplay', 'Daniel', '', 'Monash'], dtype=object)
array(['Casassus', 'Simon', '', 'UChile'], dtype=object)
array(['Christiaens', 'Valentin', '', 'UChile'], dtype=object)
array(['Kennedy', 'Grant M.', '', 'Warwick'], dtype=object)
array(['Cuadra', 'Jorge', '', 'PUC'], dtype=object)
array(['M.', 'Sebastian Perez', '', 'UChile'], dtype=object)
array(['Marino', 'Sebastian', '', 'IoA'], dtype=object)
array(['Armitage', 'Philip J.', '', 'UColorado'], dtype=object)
array(['Zurlo', 'Alice', '', 'UChile'], dtype=object)
array(['Juhasz', 'Attila', '', 'IoA'], dtype=object)
array(['Ragusa', 'Enrico', '', 'Milan'], dtype=object)
array(['Laibe', 'Guillaume', '', 'ENS-Lyon'], dtype=object)
array(['Lodato', 'Giuseppe', '', 'Milan'], dtype=object)]
|
18,699 |
0902.0484
|
Xiaodong Cui Dr.
|
Chunlei Yang, Xiaodong Cui, Shun-Qing Shen, Zhongying Xu, and Weikun
Ge
|
Spin relaxation in sub-monolayer and monolayer InAs structures grown in
GaAs matrix
|
5 pages, 4 figures
|
Physical Review B Volume: 80 Issue: 3 Article Number: 035313
Published: JUL 2009
|
10.1103/PhysRevB.80.035313
| null |
cond-mat.mes-hall
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Electron spin dynamics in InAs/GaAs heterostructures consisting of a single
layer of InAs (1/3$\sim$1 monolayer) embeded in (001) and (311)A GaAs matrix
was studied by means of time-resolved Kerr rotation spectroscopy. The spin
relaxation time of the sub-monolayer InAs samples is significantly enhanced,
compared with that of the monolayer InAs sample. We attributed the slowing of
the spin relaxation to dimensionally constrained
D\textquoteright{}yakonov-Perel\textquoteright{} mechanism in the motional
narrowing regime. The electron spin relaxation time and the effective g-factor
in sub-monolayer samples were found to be strongly dependent on the
photon-generated carrier density. The contribution from both
D\textquoteright{}yakonov-Perel\textquoteright{} mechanism and Bir-Aronov-Pikus
mechanism were discussed to interpret the temperature dependence of spin
decoherence at various carrier densities.
|
[{'version': 'v1', 'created': 'Tue, 3 Feb 2009 11:51:45 GMT'}]
|
2015-05-13
|
[array(['Yang', 'Chunlei', ''], dtype=object)
array(['Cui', 'Xiaodong', ''], dtype=object)
array(['Shen', 'Shun-Qing', ''], dtype=object)
array(['Xu', 'Zhongying', ''], dtype=object)
array(['Ge', 'Weikun', ''], dtype=object)]
|
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