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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
17,600 |
cond-mat/0206441
|
Marquis Weng
|
M. Q. Weng and M. W. Wu
|
Longitudinal spin decoherence in spin diffusion in semiconductors
|
5 pages, RevTex, 2 Postscript figures; Replaced with the final
version with some modification; Phys. Rev. B, in Press
|
Phys. Rev. B 66, 235109 (2002)
|
10.1103/PhysRevB.66.235109
| null |
cond-mat
| null |
We have set up a set of many-body kinetic Bloch equations with spacial
inhomogeneity. We reexamined the widely adopted quasi-independent electron
model and showed the inadequacy of this model in studying the spin transport.
We further pointed out a new decoherence effect based on interference effect
along the diffusion in spin transport problem due to the so called
inhomogeneous broadening effect in the Bloch equations. We have shown that this
inhomogeneous broadening effect can cause the spin decoherence alone even
without the scattering and that the resulting decoherence is more important
than the dephasing effect due to the D'yakonov-Perel' (DP) term together with
the scatterings.
|
[{'version': 'v1', 'created': 'Mon, 24 Jun 2002 12:27:22 GMT'}
{'version': 'v2', 'created': 'Sun, 13 Oct 2002 06:21:25 GMT'}]
|
2009-11-07
|
[array(['Weng', 'M. Q.', ''], dtype=object)
array(['Wu', 'M. W.', ''], dtype=object)]
|
17,601 |
2210.12516
|
Frank R\"osler
|
Frank R\"osler and Christiane Tretter
|
Computing Klein-Gordon Spectra
|
29 pages, 11 figures
| null | null | null |
math.SP cs.NA math.AP math.NA
|
http://creativecommons.org/licenses/by/4.0/
|
We study the computational complexity of the eigenvalue problem for the
Klein-Gordon equation in the framework of the Solvability Complexity Index
Hierarchy. We prove that the eigenvalue of the Klein-Gordon equation with
linearly decaying potential can be computed in a single limit with guaranteed
error bounds from above. The proof is constructive, i.e. we obtain a numerical
algorithm that can be implemented on a computer. Moreover, we prove abstract
enclosures for the point spectrum of the Klein-Gordon equation and we compare
our numerical results to these enclosures. Finally, we apply both the
implemented algorithm and our abstract enclosures to several physically
relevant potentials such as Sauter and cusp potentials and we provide a
convergence and error analysis.
|
[{'version': 'v1', 'created': 'Sat, 22 Oct 2022 18:12:53 GMT'}]
|
2022-10-25
|
[array(['Rösler', 'Frank', ''], dtype=object)
array(['Tretter', 'Christiane', ''], dtype=object)]
|
17,602 |
1903.08905
|
Chao-Wei Huang
|
Chao-Wei Huang, Ting-Rui Chiang, Shang-Yu Su, Yun-Nung Chen
|
RAP-Net: Recurrent Attention Pooling Networks for Dialogue Response
Selection
| null | null | null | null |
cs.CL
|
http://creativecommons.org/licenses/by-sa/4.0/
|
The response selection has been an emerging research topic due to the growing
interest in dialogue modeling, where the goal of the task is to select an
appropriate response for continuing dialogues. To further push the end-to-end
dialogue model toward real-world scenarios, the seventh Dialog System
Technology Challenge (DSTC7) proposed a challenging track based on real chatlog
datasets. The competition focuses on dialogue modeling with several advanced
characteristics: (1) natural language diversity, (2) capability of precisely
selecting a proper response from a large set of candidates or the scenario
without any correct answer, and (3) knowledge grounding. This paper introduces
recurrent attention pooling networks (RAP-Net), a novel framework for response
selection, which can well estimate the relevance between the dialogue contexts
and the candidates. The proposed RAP-Net is shown to be effective and can be
generalized across different datasets and settings in the DSTC7 experiments.
|
[{'version': 'v1', 'created': 'Thu, 21 Mar 2019 10:09:43 GMT'}]
|
2019-03-22
|
[array(['Huang', 'Chao-Wei', ''], dtype=object)
array(['Chiang', 'Ting-Rui', ''], dtype=object)
array(['Su', 'Shang-Yu', ''], dtype=object)
array(['Chen', 'Yun-Nung', ''], dtype=object)]
|
17,603 |
quant-ph/0407198
|
Afshin Shafiee
|
Afshin Shafiee, Feryal Safinejad and Farnoush Naqsh
|
Information and The Brukner-Zeilinger Interpretation of Quantum
Mechanics: A Critical Investigation
|
20 pages, two figures, last version. Section 4 is replaced by a new
argument. Other sections are improved. An appendix and new references are
added
|
Foundations of Physics Letters, Vol. 19, No. 1, February 2006
|
10.1007/s10702-006-1845-0
| null |
quant-ph
| null |
In Brukner and Zeilinger's interpretation of quantum mechanics, information
is introduced as the most fundamental notion and the finiteness of information
is considered as an essential feature of quantum systems. They also define a
new measure of information which is inherently different from the Shannon
information and try to show that the latter is not useful in defining the
information content in a quantum object.
Here, we show that there are serious problems in their approach which make
their efforts unsatisfactory. The finiteness of information does not explain
how objective results appear in experiments and what an instantaneous change in
the so-called information vector (or catalog of knowledge) really means during
the measurement. On the other hand, Brukner and Zeilinger's definition of a new
measure of information may lose its significance, when the spin measurement of
an elementary system is treated realistically. Hence, the sum of the individual
measures of information may not be a conserved value in real experiments.
|
[{'version': 'v1', 'created': 'Mon, 26 Jul 2004 08:29:34 GMT'}
{'version': 'v2', 'created': 'Wed, 28 Sep 2005 10:38:52 GMT'}]
|
2016-09-08
|
[array(['Shafiee', 'Afshin', ''], dtype=object)
array(['Safinejad', 'Feryal', ''], dtype=object)
array(['Naqsh', 'Farnoush', ''], dtype=object)]
|
17,604 |
hep-ph/0008333
|
A. Perez-Lorenzana
|
A. P\'erez-Lorenzana
|
Theories in More than Four Dimensions
|
LaTeX file, 31 pages, no figures. Minor changes, References added.
Lectures given at the IX Mexican School on Particles and Fields, Metepec,
Puebla, Mexico, August, 2000. To appear in the proceedings
|
AIP Conf.Proc. 562 (2001) 53-85
|
10.1063/1.1374858
|
UMD-PP-00-088
|
hep-ph hep-th
| null |
Particle physics models where there are large hidden extra dimensions are
currently on the focus of an intense activity. The main reason is that these
large extra dimensions may come with a TeV scale for quantum gravity (or string
theory) which leads to a plethora of new observable phenomena in colliders as
well in other areas of particle physics. Those new dimensions could be as large
as millimeters implying deviations of the Newton's law of gravity at these
scales. Intending to provide a basic introduction to this fast developing area,
we present a general overview of theories with large extra dimensions. We
center our discussion on models for neutrino masses, high dimensional
extensions of the Standard Model and gauge coupling unification. We discuss the
recently proposed technic of splitting fermion wave functions on a tick brane
which may solve the problem of a fast proton decay and produce fermion mass
hierarchies without invoking extra global symmetries. Randall-Sundrum model and
some current trends are also commented.
|
[{'version': 'v1', 'created': 'Thu, 31 Aug 2000 14:32:47 GMT'}
{'version': 'v2', 'created': 'Mon, 11 Sep 2000 22:19:53 GMT'}]
|
2009-10-31
|
[array(['Pérez-Lorenzana', 'A.', ''], dtype=object)]
|
17,605 |
2306.15064
|
Nathan Chen
|
Nathan Chen, Benjamin Church, Feng Hao
|
Nowhere vanishing holomorphic one-forms and fibrations over abelian
varieties
|
15 pages; v2: corrected typos in Conj. B and some of the proofs in
section 4
| null | null | null |
math.AG
|
http://creativecommons.org/licenses/by/4.0/
|
A result of Popa and Schnell shows that any holomorphic 1-form on a smooth
complex projective variety of general type admits zeros. More generally, given
a variety $X$ which admits $g$ pointwise linearly independent holomorphic
1-forms, their result shows that $X$ has Kodaira dimension $\kappa(X) \leq \dim
X - g$. In the extremal case where $\kappa(X) = \dim X - g$ and $X$ is minimal,
we prove that $X$ admits a smooth morphism to an abelian variety, and classify
all such $X$ by showing they arise as diagonal quotients of the product of an
abelian variety with a variety of general type. The case $g = 1$ was first
proved by the third author, and classification results about surfaces and
threefolds carrying nowhere vanishing forms have appeared in work of Schreieder
and subsequent joint work with the third author. We also prove a birational
version of this classification which holds without the minimal assumption, and
establish additional cases of a conjecture of the third author.
|
[{'version': 'v1', 'created': 'Mon, 26 Jun 2023 21:07:05 GMT'}
{'version': 'v2', 'created': 'Fri, 30 Jun 2023 06:29:08 GMT'}]
|
2023-07-03
|
[array(['Chen', 'Nathan', ''], dtype=object)
array(['Church', 'Benjamin', ''], dtype=object)
array(['Hao', 'Feng', ''], dtype=object)]
|
17,606 |
0906.3944
|
Leonid Ksenofontov
|
E.G. Berezhko, L.T. Ksenofontov, H.J. Voelk
|
Cosmic ray acceleration parameters from multi-wavelength observations.
The case of SN 1006
|
10 pages, 6 figures, accepted for publication in A&A
|
Astron.Astrophys. 505:169-176,2009
|
10.1051/0004-6361/200911948
| null |
astro-ph.HE astro-ph.GA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The properties of the Galactic supernova remnant SN 1006 are theoretically
reanalysed. Nonlinear kinetic theory is used to determine the acceleration
efficiency of cosmic rays (CRs) in the supernova remnant SN 1006. The known
range of astronomical parameters and the existing measurements of nonthermal
emission are examined in order to define the values of the relevant physical
parameters which determine the CR acceleration efficiency. It is shown that the
parameter values -- proton injection rate, electron to proton ratio and
downstream magnetic field strength -- are determined with the appropriate
accuracy. In particular also the observed azimuthal variations in the gamma-ray
morphology agree with the theoretical expectation. These parameter values,
together with the reduction of the gamma-ray flux relative to a spherically
symmetric acceleration geometry, allow a good fit to the existing data,
including the recently detected TeV emission by H.E.S.S. SN 1006 represents the
first example where a high efficiency of nuclear CR production, required for
the Galactic CR sources, is consistently established.
|
[{'version': 'v1', 'created': 'Mon, 22 Jun 2009 08:19:31 GMT'}]
|
2011-03-22
|
[array(['Berezhko', 'E. G.', ''], dtype=object)
array(['Ksenofontov', 'L. T.', ''], dtype=object)
array(['Voelk', 'H. J.', ''], dtype=object)]
|
17,607 |
2011.11593
|
Christopher Clack
|
Lee Braine, Keith Haviland, Owen Smith-Jaynes, Andy Vautier, Chris
Clack
|
Simulating an Object-Oriented Financial System in a Functional Language
|
arXiv admin note: author list corrected
| null | null | null |
cs.CE
|
http://creativecommons.org/licenses/by/4.0/
|
This paper summarises a successful application of functional programming
within a commercial environment. We report on experience at Accenture's
Financial Services Solution Centre in London with simulating an object-oriented
financial system in order to assist analysis and design. The work was part of a
large IT project for an international investment bank and provides a pragmatic
case study.
|
[{'version': 'v1', 'created': 'Mon, 23 Nov 2020 18:11:26 GMT'}
{'version': 'v2', 'created': 'Wed, 2 Dec 2020 18:09:13 GMT'}]
|
2020-12-03
|
[array(['Braine', 'Lee', ''], dtype=object)
array(['Haviland', 'Keith', ''], dtype=object)
array(['Smith-Jaynes', 'Owen', ''], dtype=object)
array(['Vautier', 'Andy', ''], dtype=object)
array(['Clack', 'Chris', ''], dtype=object)]
|
17,608 |
cs/0703008
|
Francoise Detienne
|
Sophie Chatel, Fran\c{c}oise D\'etienne
|
Strategies in object-oriented design
| null |
Acta Psychologica 91 (1996) 245-269
| null | null |
cs.HC
| null |
This paper presents a study aiming to analyse the design strategies of
experts in object-oriented programming. We report an experiment conducted with
four experts. Each subject solved three problems. Our results show that three
strategies may be used in program design according to the solution structure.
An object-centred strategy and a function-centred strategy are used when the
solution has a hierarchical structure with vertical communication between
objects. In this case, the plan which guides the design activity is
declarative. A procedure-centred strategy is used when the solution has a flat
structure with horizontal communication between objects. In this case, the plan
which guides the design activity is procedural. These results are discussed in
relation with results on design strategies in procedural design. Furthermore,
our results provide insight into the knowledge structures of experts in
object-oriented design. To conclude, we point out limitations of this study and
discuss implications of our results for Human-Computer Interaction systems, in
particular for systems assisting experts in their design activity.
|
[{'version': 'v1', 'created': 'Fri, 2 Mar 2007 12:50:12 GMT'}]
|
2016-08-14
|
[array(['Chatel', 'Sophie', ''], dtype=object)
array(['Détienne', 'Françoise', ''], dtype=object)]
|
17,609 |
physics/0309099
|
Dmitri Khokhlov
|
D.L. Khokhlov
|
The effective inertial acceleration due to oscillations of the
gravitational potential: footprints in the solar system
|
7 pages
| null | null | null |
physics.gen-ph
| null |
The conjecture is considered that every body induces the wave field which
imposes oscillations on the gravitational potential of a body. The function for
oscillations is chosen to prevent the gravitational collapse of the matter at
the nucleus energy density. Oscillations of the gravitational potential of a
body produce effective inertial outward acceleration for a particle orbiting
around the body. Footprints of the effective inertial acceleration due to
oscillations of the gravitational potentials of the Sun and Earth are
investigated. The conjecture allows to explain the anomalous shift of the
perihelion of Mercury and Icarus, the anomalous shift of the perigee of LAGEOS
II, the anomalous acceleration acting on Pioneer 10, 11, the anomalous increase
in the lunar semi-major axis. The advance of the Keplerian orbit for Earth,
Jupiter, Neptune, Uranus caused by the effective inertial acceleration due to
oscillations of the gravitational potential of the Sun is in agreement with the
observational bounds from the planetary ephemeris.
|
[{'version': 'v1', 'created': 'Wed, 24 Sep 2003 14:58:06 GMT'}
{'version': 'v2', 'created': 'Tue, 2 Dec 2003 16:33:44 GMT'}]
|
2007-05-23
|
[array(['Khokhlov', 'D. L.', ''], dtype=object)]
|
17,610 |
astro-ph/0412029
|
Ryan J. Foley
|
Alexei V. Filippenko
|
Supernovae and Their Massive Star Progenitors
|
To be published in "The Fate of the Most Massive Stars," ed. R. M.
Humphreys and K. Stanek (San Francisco: Astron. Society of the Pacific)
| null | null | null |
astro-ph
| null |
I briefly describe the Lick Observatory Supernova Search with the 0.76-m
Katzman Automatic Imaging Telescope. I then present an overview of optical
observations of Type II, IIb, Ib, and Ic supernovae (SNe), all of which are
thought to arise from core collapse in massive progenitors that have previously
experienced different amounts of mass loss. SNe IIn are distinguished by
relatively narrow emission lines with little or no P-Cygni absorption
component; they probably have unusually dense circumstellar gas with which the
ejecta interact. Some SNe IIn, however, might actually be super-outbursts of
luminous variable stars; rarely, they may even be SNe Ia in disguise. Plausible
detections of the progenitors of a few SNe II have been made.
Spectropolarimetry of core-collapse SNe reveals that asphericity increases
toward the core.
|
[{'version': 'v1', 'created': 'Wed, 1 Dec 2004 18:55:47 GMT'}]
|
2007-05-23
|
[array(['Filippenko', 'Alexei V.', ''], dtype=object)]
|
17,611 |
0706.0570
|
Jean-Luc Marichal
|
Jean-Luc Marichal
|
Weighted lattice polynomials
|
Revised version (minor changes)
|
Discrete Mathematics 309 (4) (2009) 814-820
| null | null |
math.RA math.CO
| null |
We define the concept of weighted lattice polynomial functions as lattice
polynomial functions constructed from both variables and parameters. We provide
equivalent forms of these functions in an arbitrary bounded distributive
lattice. We also show that these functions include the class of discrete Sugeno
integrals and that they are characterized by a median based decomposition
formula.
|
[{'version': 'v1', 'created': 'Tue, 5 Jun 2007 02:17:50 GMT'}
{'version': 'v2', 'created': 'Tue, 15 Jan 2008 12:34:18 GMT'}]
|
2009-02-23
|
[array(['Marichal', 'Jean-Luc', ''], dtype=object)]
|
17,612 |
2010.12621
|
David Bieber
|
David Bieber, Charles Sutton, Hugo Larochelle, Daniel Tarlow
|
Learning to Execute Programs with Instruction Pointer Attention Graph
Neural Networks
|
Accepted at NeurIPS 2020
| null | null | null |
cs.LG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Graph neural networks (GNNs) have emerged as a powerful tool for learning
software engineering tasks including code completion, bug finding, and program
repair. They benefit from leveraging program structure like control flow
graphs, but they are not well-suited to tasks like program execution that
require far more sequential reasoning steps than number of GNN propagation
steps. Recurrent neural networks (RNNs), on the other hand, are well-suited to
long sequential chains of reasoning, but they do not naturally incorporate
program structure and generally perform worse on the above tasks. Our aim is to
achieve the best of both worlds, and we do so by introducing a novel GNN
architecture, the Instruction Pointer Attention Graph Neural Networks
(IPA-GNN), which achieves improved systematic generalization on the task of
learning to execute programs using control flow graphs. The model arises by
considering RNNs operating on program traces with branch decisions as latent
variables. The IPA-GNN can be seen either as a continuous relaxation of the RNN
model or as a GNN variant more tailored to execution. To test the models, we
propose evaluating systematic generalization on learning to execute using
control flow graphs, which tests sequential reasoning and use of program
structure. More practically, we evaluate these models on the task of learning
to execute partial programs, as might arise if using the model as a heuristic
function in program synthesis. Results show that the IPA-GNN outperforms a
variety of RNN and GNN baselines on both tasks.
|
[{'version': 'v1', 'created': 'Fri, 23 Oct 2020 19:12:30 GMT'}]
|
2020-10-27
|
[array(['Bieber', 'David', ''], dtype=object)
array(['Sutton', 'Charles', ''], dtype=object)
array(['Larochelle', 'Hugo', ''], dtype=object)
array(['Tarlow', 'Daniel', ''], dtype=object)]
|
17,613 |
2108.08449
|
Wenzhong Yan
|
Wenzhong Yan and Ankur Mehta
|
A cut-and-fold self-sustained compliant oscillator for autonomous
actuation of origami-inspired robots
|
23 pages, 5 figures. This manuscript has been accepted for
publication in Soft Robotics. Supplementary texts, movies, and figures are
not uploaded
|
Soft Robotics, 2021
|
10.1089/soro.2021.0018
| null |
cs.RO physics.app-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Origami-inspired robots are of particular interest given their potential for
rapid and accessible design and fabrication of elegant designs and complex
functionalities through cutting and folding of flexible 2D sheets or even
strings, i.e.printable manufacturing. Yet, origami robots still require bulky,
rigid components or electronics for actuation and control to accomplish tasks
with reliability, programmability, ability to output substantial force, and
durability, restricting their full potential. Here, we present a printable
self-sustained compliant oscillator that generates periodic actuation using
only constant electrical power, without discrete components or electronic
control hardware. This oscillator is robust (9 out of 10 prototypes worked
successfully on the first try), configurable (with tunable periods from 3 s to
12 s), powerful (can overcome hydrodynamic resistance to consistently propel a
swimmer at ~1.6 body lengths/min), and long-lasting (~10^3 cycles); it enables
driving macroscale devices with prescribed autonomous behaviors, e.g.
locomotion and sequencing. This oscillator is also fully functional underwater
and in high magnetic fields. Our analytical model characterizes essential
parameters of the oscillation period, enabling programmable design of the
oscillator. The printable oscillator can be integrated into origami-inspired
systems seamlessly and monolithically, allowing rapid design and prototyping;
the resulting integrated devices are lightweight, low-cost, compliant,
electronic-free, and nonmagnetic, enabling practical applications in extreme
areas. We demonstrate the functionalities of the oscillator with: (i)
autonomous gliding of a printable swimmer, (ii) LED flashing, and (iii) fluid
stirring. This work paves the way for realizing fully printable autonomous
robots with a high integration of actuation and control.
|
[{'version': 'v1', 'created': 'Thu, 19 Aug 2021 02:43:10 GMT'}]
|
2021-12-06
|
[array(['Yan', 'Wenzhong', ''], dtype=object)
array(['Mehta', 'Ankur', ''], dtype=object)]
|
17,614 |
astro-ph/9905357
|
Mark Lacy
|
Mark Lacy, Mary Elizabeth Kaiser, Gary J. Hill, Steve Rawlings, &
Gareth Leyshon
|
A complete sample of radio sources in the North Ecliptic Cap, selected
at 38 MHz -- III. further imaging observations and the photometric properties
of the sample
|
10 pages, 6 figures, accepted by MNRAS
| null |
10.1046/j.1365-8711.1999.02789.x
| null |
astro-ph
| null |
Further imaging observations of a sample of radio sources in the North
Ecliptic Cap are presented and a number of new identifications are made. Using
redshifts from spectroscopic data presented in a companion paper (Lacy et al.\
1999b), the photometric properties of the galaxies in the sample are discussed.
It is shown that: (1) out to at least z~0.6 radio galaxies are good standard
candles irrespective of radio luminosity; (2) for 0.6~<z~<1 a large fraction of
the sample have magnitudes and colours consistent with a non-evolving giant
elliptical, and (3) at higher redshifts, where the R-band samples the
rest-frame UV flux, most objects have less UV luminosity than expected if they
form their stellar populations at a constant rate from a high redshift to
$z\sim 1$ in unobscured star-forming regions (assuming an Einstein -- de Sitter
cosmology). The consequences of these observations are briefly discussed.
|
[{'version': 'v1', 'created': 'Thu, 27 May 1999 10:12:56 GMT'}]
|
2009-10-31
|
[array(['Lacy', 'Mark', ''], dtype=object)
array(['Kaiser', 'Mary Elizabeth', ''], dtype=object)
array(['Hill', 'Gary J.', ''], dtype=object)
array(['Rawlings', 'Steve', ''], dtype=object)
array(['Leyshon', 'Gareth', ''], dtype=object)]
|
17,615 |
2205.14812
|
Thomas Zhang
|
Daniel Pfrommer, Thomas T.C.K. Zhang, Stephen Tu, Nikolai Matni
|
TaSIL: Taylor Series Imitation Learning
|
Appeared at NeurIPS 2022. V2: added to related work, updated
notation, fixed small errors in appendix
| null | null | null |
cs.LG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We propose Taylor Series Imitation Learning (TaSIL), a simple augmentation to
standard behavior cloning losses in the context of continuous control. TaSIL
penalizes deviations in the higher-order Taylor series terms between the
learned and expert policies. We show that experts satisfying a notion of
$\textit{incremental input-to-state stability}$ are easy to learn, in the sense
that a small TaSIL-augmented imitation loss over expert trajectories guarantees
a small imitation loss over trajectories generated by the learned policy. We
provide sample-complexity bounds for TaSIL that scale as
$\tilde{\mathcal{O}}(1/n)$ in the realizable setting, for $n$ the number of
expert demonstrations. Finally, we demonstrate experimentally the relationship
between the robustness of the expert policy and the order of Taylor expansion
required in TaSIL, and compare standard Behavior Cloning, DART, and DAgger with
TaSIL-loss-augmented variants. In all cases, we show significant improvement
over baselines across a variety of MuJoCo tasks.
|
[{'version': 'v1', 'created': 'Mon, 30 May 2022 02:36:35 GMT'}
{'version': 'v2', 'created': 'Mon, 16 Jan 2023 23:14:10 GMT'}]
|
2023-01-18
|
[array(['Pfrommer', 'Daniel', ''], dtype=object)
array(['Zhang', 'Thomas T. C. K.', ''], dtype=object)
array(['Tu', 'Stephen', ''], dtype=object)
array(['Matni', 'Nikolai', ''], dtype=object)]
|
17,616 |
astro-ph/0304464
|
Piotr Popowski
|
P. Popowski, C.A. Nelson, D.P. Bennett, A.J. Drake, T. Vandehei, K.
Griest, K.H. Cook, C. Alcock, R.A. Allsman, D.R. Alves, T.S. Axelrod, A.C.
Becker, K.C. Freeman, M. Geha, M.J. Lehner, S.L. Marshall, D. Minniti, B.A.
Peterson, P.J. Quinn, C.W. Stubbs, W. Sutherland, D. Welch (The MACHO
Collaboration)
|
Recent Microlensing Results from the MACHO Project
|
25 pages, Invited Review, to appear in "Gravitational Lensing: A
Unique Tool For Cosmology", Aussois 2003, eds. D. Valls-Gabaud & J.-P. Kneib
| null | null | null |
astro-ph
| null |
We describe a few recent microlensing results from the MACHO Collaboration.
The aim of the MACHO Project was the identification and quantitative
description of dark and luminous matter in the Milky Way using microlensing
toward the Magellanic Clouds and Galactic bulge. We start with a discussion of
the HST follow-up observations of the microlensing events toward the LMC
detected in the first 5 years of the experiment. Using color-magnitude diagrams
we attempt to distinguish between two possible locations of the microlensing
sources: 1) in the LMC or 2) behind the LMC. We conclude that unless the
extinction is extremely patchy, it is very unlikely that most of the LMC events
have sources behind the LMC. During an examination of the HST images of the 13
LMC events we found a very red object next to the source star of event LMC-5.
Astrometry, microlensing parallax fit, and a spectrum suggest that in this case
we directly image the lens - a low-mass disk star.
Then we focus on the majority of events observed by the MACHO Project, which
are detected toward the Galactic bulge. We argue that the microlensing optical
depth toward the bulge is best measured using events that have clump giant
sources, which are almost unaffected by blending. From this sample we derive a
low optical depth toward the Galactic bulge of (1.4 +/- 0.3) x 10^{-6}, in good
agreement with other observational constraints and with theoretical models. The
presence of many long-duration events among the bulge candidates allows us to
investigate the microlensing parallax effect. Events with the strongest
parallax signal are probably due to massive remnants. Events MACHO-96-BLG-5 and
MACHO-98-BLG-6 might have been caused by the 6-solar-mass black holes.
|
[{'version': 'v1', 'created': 'Fri, 25 Apr 2003 13:54:21 GMT'}]
|
2007-05-23
|
[array(['Popowski', 'P.', '', 'The MACHO\n Collaboration'], dtype=object)
array(['Nelson', 'C. A.', '', 'The MACHO\n Collaboration'], dtype=object)
array(['Bennett', 'D. P.', '', 'The MACHO\n Collaboration'], dtype=object)
array(['Drake', 'A. J.', '', 'The MACHO\n Collaboration'], dtype=object)
array(['Vandehei', 'T.', '', 'The MACHO\n Collaboration'], dtype=object)
array(['Griest', 'K.', '', 'The MACHO\n Collaboration'], dtype=object)
array(['Cook', 'K. H.', '', 'The MACHO\n Collaboration'], dtype=object)
array(['Alcock', 'C.', '', 'The MACHO\n Collaboration'], dtype=object)
array(['Allsman', 'R. A.', '', 'The MACHO\n Collaboration'], dtype=object)
array(['Alves', 'D. R.', '', 'The MACHO\n Collaboration'], dtype=object)
array(['Axelrod', 'T. S.', '', 'The MACHO\n Collaboration'], dtype=object)
array(['Becker', 'A. C.', '', 'The MACHO\n Collaboration'], dtype=object)
array(['Freeman', 'K. C.', '', 'The MACHO\n Collaboration'], dtype=object)
array(['Geha', 'M.', '', 'The MACHO\n Collaboration'], dtype=object)
array(['Lehner', 'M. J.', '', 'The MACHO\n Collaboration'], dtype=object)
array(['Marshall', 'S. L.', '', 'The MACHO\n Collaboration'],
dtype=object)
array(['Minniti', 'D.', '', 'The MACHO\n Collaboration'], dtype=object)
array(['Peterson', 'B. A.', '', 'The MACHO\n Collaboration'],
dtype=object)
array(['Quinn', 'P. J.', '', 'The MACHO\n Collaboration'], dtype=object)
array(['Stubbs', 'C. W.', '', 'The MACHO\n Collaboration'], dtype=object)
array(['Sutherland', 'W.', '', 'The MACHO\n Collaboration'], dtype=object)
array(['Welch', 'D.', '', 'The MACHO\n Collaboration'], dtype=object)]
|
17,617 |
2207.00463
|
Min-Sheng Lin
|
Min-Sheng Lin
|
Counting Dominating Sets in Directed Path Graphs
|
9 pages and 4 figures
| null | null | null |
cs.DM
|
http://creativecommons.org/licenses/by/4.0/
|
A dominating set of a graph is a set of vertices such that every vertex not
in the set has at least one neighbor in the set. The problem of counting
dominating sets is #P-complete for chordal graphs but solvable in polynomial
time for its subclass of interval graphs. The complexity status of the
corresponding problem is still undetermined for directed path graphs, which are
a well-known class of graphs that falls between chordal graphs and interval
graphs. This paper reveals that the problem of counting dominating sets remains
#P-complete for directed path graphs but a stricter constraint to rooted
directed path graphs admits a polynomial-time solution.
|
[{'version': 'v1', 'created': 'Fri, 1 Jul 2022 14:38:23 GMT'}]
|
2022-07-04
|
[array(['Lin', 'Min-Sheng', ''], dtype=object)]
|
17,618 |
0811.1061
|
Heinz Kredel
|
Raphael Jolly and Heinz Kredel
|
How to turn a scripting language into a domain specific language for
computer algebra
| null | null | null | null |
cs.SC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We have developed two computer algebra systems, meditor [Jolly:2007] and JAS
[Kredel:2006]. These CAS systems are available as Java libraries. For the
use-case of interactively entering and manipulating mathematical expressions,
there is a need of a scripting front-end for our libraries. Most other CAS
invent and implement their own scripting interface for this purpose. We,
however, do not want to reinvent the wheel and propose to use a contemporary
scripting language with access to Java code. In this paper we discuss the
requirements for a scripting language in computer algebra and check whether the
languages Python, Ruby, Groovy and Scala meet these requirements. We conclude
that, with minor problems, any of these languages is suitable for our purpose.
|
[{'version': 'v1', 'created': 'Thu, 6 Nov 2008 23:07:36 GMT'}
{'version': 'v2', 'created': 'Thu, 27 Nov 2008 16:34:04 GMT'}]
|
2008-11-27
|
[array(['Jolly', 'Raphael', ''], dtype=object)
array(['Kredel', 'Heinz', ''], dtype=object)]
|
17,619 |
1108.5139
|
David D. K. Chow
|
David D. K. Chow
|
Single-rotation two-charge black holes in gauged supergravity
|
17 pages
| null | null |
MIFPA-2011-37
|
hep-th gr-qc
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider asymptotically AdS, non-extremal, charged and rotating black
holes with rotation in a single 2-plane and two independent U(1) charge
parameters. Using a common ansatz, solutions are found for 5-dimensional U(1)^3
gauged supergravity, 7-dimensional U(1)^2 gauged supergravity, and
6-dimensional U(1) gauged supergravity coupled to matter. We also find static
AdS black holes with two U(1) charges of a certain theory in arbitrary
dimensions. Some basic properties of the solutions are studied.
|
[{'version': 'v1', 'created': 'Thu, 25 Aug 2011 17:44:21 GMT'}]
|
2011-08-26
|
[array(['Chow', 'David D. K.', ''], dtype=object)]
|
17,620 |
2112.13959
|
Dongpeng Kang
|
Dongpeng Kang, Weiqi Zhang, Amr S. Helmy, Siyuan Yu, Liying Tan and
Jing Ma
|
Wavelength Conversion Efficiency Enhancement in Modal Phase Matched
$\chi^{(2)}$ Nonlinear Waveguides
|
10 pages, 5 figures
|
IEEE Photonics Journal, volume 13, issue 3, article number
3000309, June 2021
|
10.1109/JPHOT.2021.3087606
| null |
physics.optics quant-ph
|
http://creativecommons.org/licenses/by/4.0/
|
Modal phase matching (MPM) is a widely used phase matching technique in
Al$_x$Ga$_{1-x}$As and other $\chi^{(2)}$ nonlinear waveguides for efficient
wavelength conversions. The use of a non-fundamental spatial mode compensates
the material dispersion but also reduces the spatial overlap of the three
interacting waves and therefore limits the conversion efficiency. In this work,
we develop a technique to increase the nonlinear overlap by modifying the
material nonlinearity, instead of the traditional method of optimizing the
modal field profiles. This could eliminate the limiting factor of low spatial
overlap inherent to MPM and significantly enhance the conversion efficiency.
Among the design examples provided, this technique could increase the
conversion efficiency by a factor of up to $\sim$290 in an Al$_x$Ga$_{1-x}$As
waveguide. We further show that this technique is applicable to all
$\chi^{(2)}$ material systems that utilize MPM for wavelength conversion.
|
[{'version': 'v1', 'created': 'Tue, 28 Dec 2021 01:28:56 GMT'}]
|
2021-12-30
|
[array(['Kang', 'Dongpeng', ''], dtype=object)
array(['Zhang', 'Weiqi', ''], dtype=object)
array(['Helmy', 'Amr S.', ''], dtype=object)
array(['Yu', 'Siyuan', ''], dtype=object)
array(['Tan', 'Liying', ''], dtype=object)
array(['Ma', 'Jing', ''], dtype=object)]
|
17,621 |
astro-ph/0605675
|
Tijana Prodanovic
|
T. Prodanovic, B. D. Fields
|
Can Galactic Cosmic Rays Account for Solar 6Li Without Overproducing
Gamma Rays?
|
4 pages, 1 figure To be published in ApJL
|
Astrophys.J. 645 (2006) L125-L128
|
10.1086/506205
| null |
astro-ph
| null |
Cosmic-ray interactions with interstellar gas produces both 6Li, which
accumulates in the interstellar medium (ISM), and $\pi^0$ mesons, which decay
to gamma-rays which propagate throughout the cosmos. Local 6Li abundances and
extragalactic gamma-rays thus have a common origin which tightly links them. We
exploit this connection to use gamma-ray observations to infer the contribution
to 6Li nucleosynthesis by standard Galactic cosmic-ray (GCR) interactions with
the ISM. Our calculation uses a carefully propagated cosmic-ray spectrum and
accounts for 6Li production from both fusion reactions ($\alpha \alpha \to
^6Li$) as well as from spallation channels (${p,\alpha+CNO \to ^6Li$). We find
that although extreme assumptions yield a consistent picture, more realistic
ones indicate that solar 6Li cannot be produced by standard GCRs alone without
overproducing the hadronic gamma rays. Implications for the primordial 6Li
production by decaying dark matter and cosmic rays from cosmological structure
formation are discussed. Upcoming gamma-ray observations by GLAST will be
crucial for determining the resolution of this problem.
|
[{'version': 'v1', 'created': 'Fri, 26 May 2006 20:01:04 GMT'}]
|
2009-11-11
|
[array(['Prodanovic', 'T.', ''], dtype=object)
array(['Fields', 'B. D.', ''], dtype=object)]
|
17,622 |
1604.01527
|
Valery Kovalchuk
|
V. I. Kovalchuk
|
Quasi-elastic scattering of 6He, 7Be, and 8B nuclei by 12C nuclei
| null |
Rus. Phys. J., Vol.58, No.8 (2015) 1134
|
10.1007/s11182-015-0623-5
| null |
nucl-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The observed cross sections of quasi-elastic scattering of 6He, 7Be, and 8B
nuclei by 12C nuclei are described within the framework of the diffraction
nuclear model and the model of nucleus-nucleus scattering in the high-energy
approximation with a double folding potential, for intermediate energies of the
incident particles. The calculations make use of realistic distributions of
nucleon densities and take account of the Coulomb interaction and inelastic
scattering with excitation of low-lying collective states of the target.
|
[{'version': 'v1', 'created': 'Wed, 6 Apr 2016 08:08:29 GMT'}]
|
2016-04-07
|
[array(['Kovalchuk', 'V. I.', ''], dtype=object)]
|
17,623 |
cond-mat/0509729
|
Niels Gronbech Jensen
|
Jeffrey E. Marchese and Matteo Cirillo and Niels Gr{\o}nbech-Jensen
|
Classical analysis of phase-locking transients and Rabi-type
oscillations in microwave-driven Josephson junctions
|
18 pages total, 8 figures (typos corrected; minor revisions to
figures and equations)
|
Physical Review B Vol.73, 174507 (2006)
|
10.1103/PhysRevB.73.174507
| null |
cond-mat.supr-con cond-mat.stat-mech
| null |
We present a classical analysis of the transient response of Josephson
junctions perturbed by microwaves and thermal fluctuations. The results include
a specific low frequency modulation in phase and amplitude behavior of a
junction in its zero-voltage state. This transient modulation frequency is
linked directly to an observed variation in the probability for the system to
switch to its non-zero voltage state. Complementing previous work on linking
classical analysis to the experimental observations of Rabi-oscillations, this
expanded perturbation method also provides closed form analytical results for
attenuation of the modulations and the Rabi-type oscillation frequency. Results
of perturbation analysis are compared directly (and quantitatively) to
numerical simulations of the classical model as well as published experimental
data, suggesting that transients to phase-locking are closely related to the
observed oscillations.
|
[{'version': 'v1', 'created': 'Wed, 28 Sep 2005 14:45:33 GMT'}
{'version': 'v2', 'created': 'Thu, 13 Apr 2006 21:08:01 GMT'}]
|
2007-05-23
|
[array(['Marchese', 'Jeffrey E.', ''], dtype=object)
array(['Cirillo', 'Matteo', ''], dtype=object)
array(['Grønbech-Jensen', 'Niels', ''], dtype=object)]
|
17,624 |
1909.10883
|
Hayato Motohashi
|
Hayato Motohashi, Alexei A. Starobinsky
|
Constant-roll inflation in scalar-tensor gravity
|
15 pages, 3 figures; matches published version
|
JCAP 11 (2019) 025
|
10.1088/1475-7516/2019/11/025
|
YITP-19-81
|
gr-qc astro-ph.CO hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We generalize the notion of constant-roll inflation earlier introduced in
General Relativity (GR) and $f(R)$ gravity to inflationary models in more
general scalar-tensor gravity. A number of novel exact analytic solutions for a
FLRW spatially flat cosmological background is found for this case. All forms
of the scalar field potential and its coupling to gravity producing the exact
de Sitter solution, while the scalar field is varying, are presented. In the
particular cases of induced gravity and GR with a non-minimally coupled scalar
field, all constant-roll inflationary solutions are found. In the former case
they represent power-law inflation, while in the latter case the solution is
novel and more complicated. Comparison of scalar perturbations generated during
such inflation in induced gravity with observational data shows that the
constant-roll parameter should be small, similar to constant-roll inflation in
GR and $f(R)$ gravity. Then the solution reduces to the standard slow-roll one
with small corrections.
|
[{'version': 'v1', 'created': 'Sat, 21 Sep 2019 13:50:51 GMT'}
{'version': 'v2', 'created': 'Sat, 22 Feb 2020 04:32:19 GMT'}]
|
2020-02-25
|
[array(['Motohashi', 'Hayato', ''], dtype=object)
array(['Starobinsky', 'Alexei A.', ''], dtype=object)]
|
17,625 |
2305.16639
|
Dan Richard
|
Michael A. Kouritzin and Daniel Richard
|
Universal Approximation and the Topological Neural Network
| null | null | null | null |
cs.LG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A topological neural network (TNN), which takes data from a Tychonoff
topological space instead of the usual finite dimensional space, is introduced.
As a consequence, a distributional neural network (DNN) that takes Borel
measures as data is also introduced. Combined these new neural networks
facilitate things like recognizing long range dependence, heavy tails and other
properties in stochastic process paths or like acting on belief states produced
by particle filtering or hidden Markov model algorithms. The veracity of the
TNN and DNN are then established herein by a strong universal approximation
theorem for Tychonoff spaces and its corollary for spaces of measures. These
theorems show that neural networks can arbitrarily approximate uniformly
continuous functions (with respect to the sup metric) associated with a unique
uniformity. We also provide some discussion showing that neural networks on
positive-finite measures are a generalization of the recent deep learning
notion of deep sets.
|
[{'version': 'v1', 'created': 'Fri, 26 May 2023 05:28:10 GMT'}]
|
2023-05-29
|
[array(['Kouritzin', 'Michael A.', ''], dtype=object)
array(['Richard', 'Daniel', ''], dtype=object)]
|
17,626 |
astro-ph/0002363
|
Robert L. Oldershaw
|
Robert L. Oldershaw
|
A Review of Mass Estimates for Galactic Dark Matter Objects
|
Submitted to Astrophysics and Space Science
|
Fractals 10 (2002) 27-38
| null | null |
astro-ph
| null |
Empirical mass estimates for galactic dark matter objects, published between
December 1991 and May 1999, are presented in tabular and graphical forms.
Trends in the data are identified and uncertainties are discussed. Similarities
among various stellar and dark matter mass functions are noted, and a possible
identification of the galactic dark matter objects is suggested.
|
[{'version': 'v1', 'created': 'Fri, 18 Feb 2000 07:24:29 GMT'}]
|
2007-05-23
|
[array(['Oldershaw', 'Robert L.', ''], dtype=object)]
|
17,627 |
1811.11093
|
Wenda Li
|
Wenda Li and Lawrence C. Paulson
|
Counting Polynomial Roots in Isabelle/HOL: A Formal Proof of the
Budan-Fourier Theorem
|
12 pages. Published at CPP 2019
| null | null | null |
cs.LO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Many problems in computer algebra and numerical analysis can be reduced to
counting or approximating the real roots of a polynomial within an interval.
Existing verified root-counting procedures in major proof assistants are mainly
based on the classical Sturm theorem, which only counts distinct roots.
In this paper, we have strengthened the root-counting ability in Isabelle/HOL
by first formally proving the Budan-Fourier theorem. Subsequently, based on
Descartes' rule of signs and Taylor shift, we have provided a verified
procedure to efficiently over-approximate the number of real roots within an
interval, counting multiplicity. For counting multiple roots exactly, we have
extended our previous formalisation of Sturm's theorem. Finally, we combine
verified components in the developments above to improve our previous certified
complex-root-counting procedures based on Cauchy indices. We believe those
verified routines will be crucial for certifying programs and building tactics.
|
[{'version': 'v1', 'created': 'Tue, 27 Nov 2018 16:48:52 GMT'}]
|
2018-11-28
|
[array(['Li', 'Wenda', ''], dtype=object)
array(['Paulson', 'Lawrence C.', ''], dtype=object)]
|
17,628 |
2001.05021
|
Guixian Xu Dr
|
Shanzhi Chen, Shaohui Sun, Guixian Xu, Xin Su, and Yuemin Cai
|
Beam-space Multiplexing: Practice, Theory, and Trends-From 4G TD-LTE,
5G, to 6G and Beyond
|
to appear on ieee wireless communications
| null | null | null |
eess.SP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this article, the new term, namely beam-space multiplexing, is proposed
for the former multi-layer beamforming for 4G TD-LTE in 3GPP releases. We
provide a systematic overview of beam-space multiplexing from engineering and
theoretical perspectives. Firstly, we clarify the fundamental theory of
beam-space multiplexing. Specifically, we provide a comprehensive comparison
with the antenna-space multiplexing in terms of theoretical analysis, channel
state information acquisition, and engineering implementation constraints.
Then, we summarize the key technologies and 3GPP standardization of beam-space
multiplexing in 4G TD-LTE and 5G new radio (NR) in terms of multi-layer
beamforming and massive beamforming, respectively. We also provide system-level
performance evaluation of beam-space multiplexing schemes and field results
from current commercial TD-LTE networks and field trial of 5G. The practical
deployments of 4G TD-LTE and 5G cellular networks demonstrate the superiority
of beam-space multiplexing within the limitations of implementation complexity
and practical deployment scenarios. Finally, the future trends of beam-space
multiplexing in 6G and beyond are discussed, including massive beamforming for
extremely large-scale MIMO (XL-MIMO), low earth orbit (LEO) satellites
communication, data-driven intelligent massive beamforming, and multi-target
spatial signal processing, i.e., joint communication and sensing, positioning,
etc.
|
[{'version': 'v1', 'created': 'Tue, 14 Jan 2020 19:46:41 GMT'}]
|
2020-01-16
|
[array(['Chen', 'Shanzhi', ''], dtype=object)
array(['Sun', 'Shaohui', ''], dtype=object)
array(['Xu', 'Guixian', ''], dtype=object)
array(['Su', 'Xin', ''], dtype=object)
array(['Cai', 'Yuemin', ''], dtype=object)]
|
17,629 |
1209.2372
|
Anne Mykkanen
|
Anne Mykkanen
|
The static quark potential from a multilevel algorithm for the improved
gauge action
|
26 pages, 10 figures. V2: Restructured subsection 2.2, added
references, version published in JHEP
|
JHEP 1212 (2012) 069
|
10.1007/JHEP12(2012)069
|
HIP-2012-18/TH
|
hep-lat hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We generalize the multilevel algorithm of Luescher and Weisz to study SU(N)
Yang-Mills theories with the tree-level improved gauge action. We test this
algorithm, comparing its results with those obtained using the Wilson action,
in SU(3) and SU(4) Yang-Mills theories in 2+1 and 3+1 dimensions. We measure
the static quark potential and extract the Luescher term, predicted by the
bosonic string theory.
|
[{'version': 'v1', 'created': 'Tue, 11 Sep 2012 17:19:48 GMT'}
{'version': 'v2', 'created': 'Thu, 3 Jan 2013 15:42:47 GMT'}]
|
2013-01-04
|
[array(['Mykkanen', 'Anne', ''], dtype=object)]
|
17,630 |
2002.01530
|
Min Liu
|
Min Liu, Zherong Pan, Kai Xu, Kanishka Ganguly, Dinesh Manocha
|
Deep Differentiable Grasp Planner for High-DOF Grippers
| null | null | null | null |
cs.RO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present an end-to-end algorithm for training deep neural networks to grasp
novel objects. Our algorithm builds all the essential components of a grasping
system using a forward-backward automatic differentiation approach, including
the forward kinematics of the gripper, the collision between the gripper and
the target object, and the metric for grasp poses. In particular, we show that
a generalized Q1 grasp metric is defined and differentiable for inexact grasps
generated by a neural network, and the derivatives of our generalized Q1 metric
can be computed from a sensitivity analysis of the induced optimization
problem. We show that the derivatives of the (self-)collision terms can be
efficiently computed from a watertight triangle mesh of low-quality.
Altogether, our algorithm allows for the computation of grasp poses for
high-DOF grippers in an unsupervised mode with no ground truth data, or it
improves the results in a supervised mode using a small dataset. Our new
learning algorithm significantly simplifies the data preparation for
learning-based grasping systems and leads to higher qualities of learned grasps
on common 3D shape datasets [7, 49, 26, 25], achieving a 22% higher success
rate on physical hardware and a 0.12 higher value on the Q1 grasp quality
metric.
|
[{'version': 'v1', 'created': 'Tue, 4 Feb 2020 20:50:35 GMT'}
{'version': 'v2', 'created': 'Wed, 15 Jul 2020 11:53:07 GMT'}]
|
2020-07-16
|
[array(['Liu', 'Min', ''], dtype=object)
array(['Pan', 'Zherong', ''], dtype=object)
array(['Xu', 'Kai', ''], dtype=object)
array(['Ganguly', 'Kanishka', ''], dtype=object)
array(['Manocha', 'Dinesh', ''], dtype=object)]
|
17,631 |
2203.16938
|
Seokchang Hong
|
Yonggeun Cho, Seokchang Hong, Kiyeon Lee
|
Conditional large-data global well-posedness of Dirac equation with
Hartree-type nonlinearity
|
26 pages
| null | null | null |
math.AP
|
http://creativecommons.org/publicdomain/zero/1.0/
|
We study the Cauchy problems for the Hartree-type nonlinear Dirac equations
with Yukawa-type potential in two and three spatial dimensions. This paper
improves our previous results \cite{chohlee,cholee}; we establish global
well-posedness and scattering for large data with a certain condition. Firstly
we investigate the long-time behavior of solutions to the Dirac equation
satisfies good control provided that a particular dispersive norm of solutions
is bounded. The key of our proof relies on modifying multilinear estimates
obtained in our previous papers. Secondly, we obtain large data scattering by
exploiting the Majorana condition.
|
[{'version': 'v1', 'created': 'Thu, 31 Mar 2022 10:45:59 GMT'}]
|
2022-04-01
|
[array(['Cho', 'Yonggeun', ''], dtype=object)
array(['Hong', 'Seokchang', ''], dtype=object)
array(['Lee', 'Kiyeon', ''], dtype=object)]
|
17,632 |
1704.05051
|
Hossein Hosseini
|
Hossein Hosseini, Baicen Xiao and Radha Poovendran
|
Google's Cloud Vision API Is Not Robust To Noise
| null | null | null | null |
cs.CV cs.LG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Google has recently introduced the Cloud Vision API for image analysis.
According to the demonstration website, the API "quickly classifies images into
thousands of categories, detects individual objects and faces within images,
and finds and reads printed words contained within images." It can be also used
to "detect different types of inappropriate content from adult to violent
content."
In this paper, we evaluate the robustness of Google Cloud Vision API to input
perturbation. In particular, we show that by adding sufficient noise to the
image, the API generates completely different outputs for the noisy image,
while a human observer would perceive its original content. We show that the
attack is consistently successful, by performing extensive experiments on
different image types, including natural images, images containing faces and
images with texts. For instance, using images from ImageNet dataset, we found
that adding an average of 14.25% impulse noise is enough to deceive the API.
Our findings indicate the vulnerability of the API in adversarial environments.
For example, an adversary can bypass an image filtering system by adding noise
to inappropriate images. We then show that when a noise filter is applied on
input images, the API generates mostly the same outputs for restored images as
for original images. This observation suggests that cloud vision API can
readily benefit from noise filtering, without the need for updating image
analysis algorithms.
|
[{'version': 'v1', 'created': 'Sun, 16 Apr 2017 09:47:46 GMT'}
{'version': 'v2', 'created': 'Thu, 20 Jul 2017 05:31:16 GMT'}]
|
2017-07-21
|
[array(['Hosseini', 'Hossein', ''], dtype=object)
array(['Xiao', 'Baicen', ''], dtype=object)
array(['Poovendran', 'Radha', ''], dtype=object)]
|
17,633 |
1607.05723
|
CSSudheer Kumar
|
C. S. Sudheer Kumar, Abhishek Shukla, and T. S. Mahesh
|
Discriminating between L\"uders and von Neumann measuring devices: An
NMR investigation
|
6 pages,6 figures, updated with a few more calculations
|
Physics Letters A 380 (2016) 3612-3616
|
10.1016/j.physleta.2016.09.004
| null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Measurement of an observable on a quantum system involves a probabilistic
collapse of the quantum state and a corresponding measurement outcome. L\"uders
and von Neumann state update rules attempt to describe the above
phenomenological observations. These rules are identical for a nondegenerate
observable, but differ for a degenerate observable. While L\"uders rule
preserves superpositions within a degenerate subspace under a measurement of
the corresponding degenerate observable, the von Neumann rule does not.
Recently Hegerfeldt and Mayato [Phys. Rev. A, 85, 032116 (2012)] had formulated
a protocol to discriminate between the two types of measuring devices. Here we
have reformulated this protocol for quantum registers comprising of system and
ancilla qubits. We then experimentally investigated this protocol using nulear
spin systems with the help of NMR techniques, and found that L\"uders rule is
favoured.
|
[{'version': 'v1', 'created': 'Tue, 19 Jul 2016 16:41:38 GMT'}
{'version': 'v2', 'created': 'Fri, 5 Aug 2016 20:49:08 GMT'}]
|
2019-08-19
|
[array(['Kumar', 'C. S. Sudheer', ''], dtype=object)
array(['Shukla', 'Abhishek', ''], dtype=object)
array(['Mahesh', 'T. S.', ''], dtype=object)]
|
17,634 |
1601.03932
|
John Carter
|
J.D. Carter and A. Govan
|
Frequency downshift in a viscous fluid
| null | null |
10.1016/j.euromechflu.2016.06.002
| null |
physics.flu-dyn nlin.PS physics.ao-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper, we derive a viscous generalization of the Dysthe (1979) system
from the weakly viscous generalization of the Euler equations introduced by
Dias, Dyachenko, and Zakharov (2008). This "viscous Dysthe" system models the
evolution of a weakly viscous, nearly monochromatic wave train on deep water.
It contains a term which provides a mechanism for frequency downshifting in the
absence of wind and wave breaking. The equation does not preserve the spectral
mean. Numerical simulations demonstrate that the spectral mean typically
decreases and that the spectral peak decreases for certain initial conditions.
The linear stability analysis of the plane-wave solutions of the viscous Dysthe
system demonstrates that waves with wave numbers closer to zero decay more
slowly than waves with wave numbers further from zero. Comparisons between
experimental data and numerical simulations of the NLS, dissipative NLS,
Dysthe, and viscous Dysthe systems establish that the viscous Dysthe system
accurately models data from experiments in which frequency downshifting was
observed and experiments in which frequency downshift was not observed.
|
[{'version': 'v1', 'created': 'Mon, 26 Oct 2015 22:44:31 GMT'}]
|
2016-08-24
|
[array(['Carter', 'J. D.', ''], dtype=object)
array(['Govan', 'A.', ''], dtype=object)]
|
17,635 |
hep-ph/9405387
|
Jutta Kunz
|
Burkhard Kleihaus and Jutta Kunz
|
Multisphalerons in the Weinberg-Salam Theory
|
18 pages, latex, 17 figures in uuencoded postscript files. THU-94/11
|
Phys.Rev. D50 (1994) 5343-5351
|
10.1103/PhysRevD.50.5343
| null |
hep-ph
| null |
We construct multisphaleron solutions in the Weinberg-Salam theory. The
multisphaleron solutions carry Chern-Simons charge $n/2$, where $n$ is an
integer, counting the winding of the fields in the azimuthal angle. The
well-known sphaleron has $n=1$. The multisphalerons possess axial symmetry and
parity reflection symmetry. We vary the Higgs mass and the mixing angle. For
small $n$ the energies of the multisphalerons are on the order of $n$ times the
energy of the sphaleron and their magnetic dipole moments are on the order of
$n$ times the magnetic dipole moment of the sphaleron.
|
[{'version': 'v1', 'created': 'Thu, 26 May 1994 12:56:46 GMT'}]
|
2009-10-28
|
[array(['Kleihaus', 'Burkhard', ''], dtype=object)
array(['Kunz', 'Jutta', ''], dtype=object)]
|
17,636 |
1102.1566
|
Joanna Pietraszewicz ms
|
Tomasz Swislocki, Tomasz Sowinski, Joanna Pietraszewicz, Miroslaw
Brewczyk, Maciej Lewenstein, Jakub Zakrzewski, Mariusz Gajda
|
Tunable dipolar resonances and Einstein-de Haas effect in a Rb-87 atoms
condensate
|
10 pages, 8 figures
|
Phys. Rev. A 83, 063617 (2011)
|
10.1103/PhysRevA.83.063617
| null |
cond-mat.quant-gas
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study a spinor condensate of Rb-87 atoms in F = 1 hyperfine state confined
in an optical dipole trap. Putting initially all atoms in mF = 1 component we
observe a significant transfer of atoms to other, initially empty Zeeman states
exclusively due to dipolar forces. Because of conservation of a total angular
momentum the atoms going to other Zeeman components acquire an orbital angular
momentum and circulate around the center of the trap. This is a realization of
Einstein-de Haas effect in a system of cold gases. We show that the transfer of
atoms via dipolar interaction is possible only when the energies of the initial
and the final sates are equal. This condition can be fulfilled utilizing a
resonant external magnetic field, which tunes energies of involved states via
the linear Zeeman effect. We found that there are many final states of
different spatial density which can be tuned selectively to the initial state.
We show a simple model explaining high selectivity and controllability of weak
dipolar interactions in the condensate of Rb-87 atoms.
|
[{'version': 'v1', 'created': 'Tue, 8 Feb 2011 10:53:30 GMT'}]
|
2011-07-04
|
[array(['Swislocki', 'Tomasz', ''], dtype=object)
array(['Sowinski', 'Tomasz', ''], dtype=object)
array(['Pietraszewicz', 'Joanna', ''], dtype=object)
array(['Brewczyk', 'Miroslaw', ''], dtype=object)
array(['Lewenstein', 'Maciej', ''], dtype=object)
array(['Zakrzewski', 'Jakub', ''], dtype=object)
array(['Gajda', 'Mariusz', ''], dtype=object)]
|
17,637 |
2105.13199
|
Alexander Lewis
|
Alexander Lewis
|
Stein's Method for Probability Distributions on $\mathbb{S}^1$
| null | null | null | null |
math.PR math.ST stat.TH
|
http://creativecommons.org/licenses/by/4.0/
|
In this paper, we propose a modification to the density approach to Stein's
method for intervals for the unit circle $\mathbb{S}^1$ which is motivated by
the differing geometry of $\mathbb{S}^1$ to Euclidean space. We provide an
upper bound to the Wasserstein metric for circular distributions and exhibit a
variety of different bounds between distributions; particularly, between the
von-Mises and wrapped normal distributions, and the wrapped normal and wrapped
Cauchy distributions.
|
[{'version': 'v1', 'created': 'Thu, 27 May 2021 14:48:40 GMT'}]
|
2021-05-28
|
[array(['Lewis', 'Alexander', ''], dtype=object)]
|
17,638 |
0710.4504
|
Thomas A. Trainor
|
Thomas A. Trainor
|
Centrality evolution of $p_t$ and $y_t$ spectra from Au-Au collisions at
$\sqrt{s_{NN}} = 200$ GeV
|
21 pages, 18 figures
|
Int.J.Mod.Phys.E17:1499-1540,2008
|
10.1142/S021830130801057X
| null |
hep-ph
| null |
A two-component analysis of spectra to $p_t = 12$ GeV/c for identified pions
and protons from 200 GeV Au-Au collisions is presented. The method is similar
to an analysis of the $n_{ch}$ dependence of $p_t$ spectra from p-p collisions
at 200 GeV, but applied to Au-Au centrality dependence. The soft-component
reference is a L\'evy distribution on transverse mass $m_t$. The hard-component
reference is a Gaussian on $y_t$ with exponential ($p_t$ power-law) tail.
Deviations of data from the reference are described by hard-component ratio
$r_{AA}$ which generalizes nuclear modification factor $R_{AA}$. The analysis
suggests that centrality evolution of pion and proton spectra is dominated by
changes in parton fragmentation. The structure of $r_{AA}$ suggests that parton
energy loss produces a negative boost $\Delta y_t$ of a large fraction (but not
all) of the minimum-bias fragment distribution, and that lower-energy partons
suffer relatively less energy loss, possibly due to color screening. The
analysis also suggests that the anomalous $p/\pi$ ratio may be due to
differences in the parton energy-loss process experienced by the two hadron
species. This analysis provides no evidence for radial flow.
|
[{'version': 'v1', 'created': 'Wed, 24 Oct 2007 16:19:01 GMT'}]
|
2008-11-26
|
[array(['Trainor', 'Thomas A.', ''], dtype=object)]
|
17,639 |
1504.02313
|
Plihon Nicolas
|
N. Plihon (LPP), C.S. Corr (LPP), P. Chabert (LPP)
|
Double layer formation in the expanding region of an inductively coupled
electronegative plasma
| null |
Applied Physics Letters, American Institute of Physics (AIP),
2005, 86, pp.091501
|
10.1063/1.1869533
| null |
physics.plasm-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Double-layers (DLs) were observed in the expanding region of an inductively
coupled plasma with $\text{Ar}/\text{SF}\_6$ gas mixtures. No DL was observed
in pure argon or $\text{SF}\_6$ fractions below few percent. They exist over a
wide range of power and pressure although they are only stable for a small
window of electronegativity (typically between 8\% and 13\% of $\text{SF}\_6$
at 1mTorr), becoming unstable at higher electronegativity. They seem to be
formed at the boundary between the source tube and the diffusion chamber and
act as an internal boundary (the amplitude being roughly
1.5$\frac{kT\_e}{e}$)between a high electron density, high electron
temperature, low electronegativity plasma upstream (in the source), and a low
electron density, low electron temperature, high electronegativity plasma
downstream.
|
[{'version': 'v1', 'created': 'Thu, 9 Apr 2015 13:59:44 GMT'}]
|
2015-04-10
|
[array(['Plihon', 'N.', '', 'LPP'], dtype=object)
array(['Corr', 'C. S.', '', 'LPP'], dtype=object)
array(['Chabert', 'P.', '', 'LPP'], dtype=object)]
|
17,640 |
0707.2616
|
Prateek Sharma
|
Prateek Sharma, Gregory W. Hammett
|
Preserving Monotonicity in Anisotropic Diffusion
|
accepted for publication in J. of Comp. Phys
|
J.Comput.Phys.227:123-142,2007
|
10.1016/j.jcp.2007.07.026
| null |
astro-ph physics.comp-ph physics.plasm-ph
| null |
We show that standard algorithms for anisotropic diffusion based on centered
differencing (including the recent symmetric algorithm) do not preserve
monotonicity. In the context of anisotropic thermal conduction, this can lead
to the violation of the entropy constraints of the second law of
thermodynamics, causing heat to flow from regions of lower temperature to
higher temperature. In regions of large temperature variations, this can cause
the temperature to become negative. Test cases to illustrate this for centered
asymmetric and symmetric differencing are presented. Algorithms based on slope
limiters, analogous to those used in second order schemes for hyperbolic
equations, are proposed to fix these problems. While centered algorithms may be
good for many cases, the main advantage of limited methods is that they are
guaranteed to avoid negative temperature (which can cause numerical
instabilities) in the presence of large temperature gradients. In particular,
limited methods will be useful to simulate hot, dilute astrophysical plasmas
where conduction is anisotropic and the temperature gradients are enormous,
e.g., collisionless shocks and disk-corona interface.
|
[{'version': 'v1', 'created': 'Wed, 18 Jul 2007 00:35:38 GMT'}]
|
2008-11-26
|
[array(['Sharma', 'Prateek', ''], dtype=object)
array(['Hammett', 'Gregory W.', ''], dtype=object)]
|
17,641 |
1806.02715
|
Reinier Van Buel
|
R. van Buel and C. Schaaf and H. Stark
|
Elastic turbulence in two-dimensional Taylor-Couette flows
| null | null |
10.1209/0295-5075/124/14001
| null |
physics.flu-dyn
|
http://creativecommons.org/licenses/by-nc-sa/4.0/
|
We report the onset of elastic turbulence in a two-dimensional Taylor-Couette
geometry using numerical solutions of the Oldroyd-B model, also performed at
high Weissenberg numbers with the program OpenFOAM. Beyond a critical
Weissenberg number, an elastic instability causes a supercritical transition
from the laminar Taylor-Couette to a turbulent flow. The order parameter, the
time average of secondary-flow strength, follows the scaling law $\Phi \propto
(\mathrm{Wi} -\mathrm{Wi}_c)^{\gamma}$ with $\mathrm{Wi}_c=10$ and $\gamma =
0.45$. The power spectrum of the velocity fluctuations shows a power-law decay
with a characteristic exponent, which strongly depends on the radial position.
It is greater than two, which we relate to the dimension of the geometry.
|
[{'version': 'v1', 'created': 'Thu, 7 Jun 2018 14:52:56 GMT'}]
|
2018-11-14
|
[array(['van Buel', 'R.', ''], dtype=object)
array(['Schaaf', 'C.', ''], dtype=object)
array(['Stark', 'H.', ''], dtype=object)]
|
17,642 |
1904.10694
|
Vladimir Kostov
|
Vladimir Petrov Kostov
|
Descartes' rule of signs and moduli of roots
| null |
Publicationes Mathematicae Debrecen 96/1-2 (2020) 161-184
|
10.5486/PMD.2020.8640
| null |
math.CA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A hyperbolic polynomial (HP) is a real univariate polynomial with all roots
real. By Descartes' rule of signs a HP with all coefficients nonvanishing has
exactly $c$ positive and exactly $p$ negative roots counted with multiplicity,
where $c$ and $p$ are the numbers of sign changes and sign preservations in the
sequence of its coefficients. For $c=1$ and $2$, we discuss the question: When
the moduli of all the roots of a HP are arranged in the increasing order on the
real half-line, at which positions can be the moduli of its positive roots
depending on the positions of the sign changes in the sequence of coefficients?
|
[{'version': 'v1', 'created': 'Wed, 24 Apr 2019 08:38:10 GMT'}]
|
2020-01-30
|
[array(['Kostov', 'Vladimir Petrov', ''], dtype=object)]
|
17,643 |
1402.5645
|
Elshimaa Elgendi
|
Omar S. Soliman and Elshimaa A. R. Elgendi
|
A Hybrid Estimation of Distribution Algorithm with Random Walk local
Search for Multi-mode Resource-Constrained Project Scheduling problems
|
8 pages,0 figures, Published with International Journal of Computer
Trends and Technology (IJCTT). Omar S. Soliman, Elshimaa A.R. Elgendi. A
Hybrid Estimation of Distribution Algorithm with Random Walk local Search for
Multi-mode Resource-Constrained Project Scheduling problems. Inter J. of
Computer Trends and Tech(IJCTT)8(2):57-64,2014
| null |
10.14445/22312803/IJCTT-V8P111
| null |
cs.OH
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Multi-mode resource-constrained project scheduling problems (MRCPSPs) are
classified as NP-hard problems, in which a task has different execution modes
characterized by different resource requirements. Estimation of distribution
algorithm (EDA) has shown an effective performance for solving such real-world
optimization problems but it fails to find the desired optima. This paper
integrates a novel hybrid local search technique with EDA to enhance their
local search ability. The new local search is based on delete-then-insert
operator and a random walk (DIRW) to enhance exploitation abilities of EDA in
the neighborhoods of the search space. The proposed algorithm is capable to
explore and exploit the search mechanism in the search space through its outer
and inner loops. The proposed algorithm is tested and evaluated using benchmark
test problems of the project scheduling problem library PSPLIB. Simulation
results of the proposed algorithm are compared with the classical EDA
algorithm. The obtained results showed that the effectiveness of the proposed
algorithm and outperformed the compared EDA algorithm.
|
[{'version': 'v1', 'created': 'Sun, 23 Feb 2014 18:15:24 GMT'}]
|
2014-02-25
|
[array(['Soliman', 'Omar S.', ''], dtype=object)
array(['Elgendi', 'Elshimaa A. R.', ''], dtype=object)]
|
17,644 |
2006.13063
|
Gabriel De Souza Pereira Moreira
|
Gabriel de Souza P. Moreira, Dietmar Jannach, Adilson Marques da Cunha
|
Hybrid Session-based News Recommendation using Recurrent Neural Networks
|
From the Proceeding of the LatinX in AI Research (LXAI) at ICML 2020.
arXiv admin note: text overlap with arXiv:1904.10367
| null | null | null |
cs.LG cs.IR stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We describe a hybrid meta-architecture -- the CHAMELEON -- for session-based
news recommendation that is able to leverage a variety of information types
using Recurrent Neural Networks. We evaluated our approach on two public
datasets, using a temporal evaluation protocol that simulates the dynamics of a
news portal in a realistic way. Our results confirm the benefits of modeling
the sequence of session clicks with RNNs and leveraging side information about
users and articles, resulting in significantly higher recommendation accuracy
and catalog coverage than other session-based algorithms.
|
[{'version': 'v1', 'created': 'Mon, 22 Jun 2020 17:24:43 GMT'}]
|
2020-06-24
|
[array(['Moreira', 'Gabriel de Souza P.', ''], dtype=object)
array(['Jannach', 'Dietmar', ''], dtype=object)
array(['da Cunha', 'Adilson Marques', ''], dtype=object)]
|
17,645 |
2010.06021
|
Andrew Graven
|
Andrew J. Graven and Martin W. Lo
|
The Long-Term Forecast of Station View Periods for Elliptical Orbits
|
11 pages, 5 figures, in the proceedings of the 2019 AAS/AIAA
Astrodynamics Specialist Conference
|
AAS 19-681: Astrodynamics Specialist Conference, Portland, ME, Aug
2019
| null | null |
astro-ph.EP
|
http://creativecommons.org/licenses/by/4.0/
|
In a previous paper, using ergodic theory, Lo [1] derived a simple definite
integral that provided an estimate of the view periods of ground stations to
satellites. This assumes the satellites are in circular orbits with
non-repeating ground tracks under linear $J_2$ perturbations. The novel feature
is that this is done without the propagation of the trajectory by employing
ergodic theory. This accelerated the telecommunications mission design and
analysis by several orders of magnitude and greatly simplified the process. In
this paper, we extend the view period integral to elliptical orbits.
|
[{'version': 'v1', 'created': 'Mon, 12 Oct 2020 20:50:43 GMT'}]
|
2020-10-14
|
[array(['Graven', 'Andrew J.', ''], dtype=object)
array(['Lo', 'Martin W.', ''], dtype=object)]
|
17,646 |
2203.09878
|
Marcos Faundez-Zanuy
|
Karmele L\'opez-De-Ipi\~na, Unai Martinez de Lizarduy, Nora Barroso,
Miriam Ecay-Torres, Pablo Martinez-Lage, Fernando Torres, Marcos
Faundez-Zanuy
|
Automatic analysis of Categorical Verbal Fluency for Mild Cognitive
Impartment detection: a non-linear language independent approach
|
4 pages, published in 2015 4th International Work Conference on
Bioinspired Intelligence (IWOBI), pp. 101-104
|
2015 4th International Work Conference on Bioinspired Intelligence
(IWOBI), pp. 101-104
|
10.1109/IWOBI.2015.7160151
| null |
cs.SD eess.AS q-bio.QM
|
http://creativecommons.org/licenses/by-nc-nd/4.0/
|
Alzheimer's disease (AD) is one the main causes of dementia in the world and
the patients develop severe disability and sometime full dependence. In
previous stages Mild Cognitive Impairment (MCI) produces cognitive loss but not
severe enough to interfere with daily life. This work, on selection of
biomarkers from speech for the detection of AD, is part of a wide-ranging cross
study for the diagnosis of Alzheimer. Specifically in this work a task for
detection of MCI has been used. The task analyzes Categorical Verbal Fluency.
The automatic classification is carried out by SVM over classical linear
features, Castiglioni fractal dimension and Permutation Entropy. Finally the
most relevant features are selected by ANOVA test. The promising results are
over 50% for MCI
|
[{'version': 'v1', 'created': 'Fri, 18 Mar 2022 11:40:15 GMT'}]
|
2022-03-21
|
[array(['López-De-Ipiña', 'Karmele', ''], dtype=object)
array(['de Lizarduy', 'Unai Martinez', ''], dtype=object)
array(['Barroso', 'Nora', ''], dtype=object)
array(['Ecay-Torres', 'Miriam', ''], dtype=object)
array(['Martinez-Lage', 'Pablo', ''], dtype=object)
array(['Torres', 'Fernando', ''], dtype=object)
array(['Faundez-Zanuy', 'Marcos', ''], dtype=object)]
|
17,647 |
2207.09961
|
Keita Imaizumi
|
Keita Imaizumi
|
Quasi-normal modes for the D3-branes and Exact WKB analysis
|
16 pages, 3 figures, (v2) references are added, (v3) typos corrected,
published version
| null |
10.1016/j.physletb.2022.137450
|
TIT/HEP-691
|
hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We demonstrate how the Exact WKB analysis works in the study of the
quasi-normal modes (QNMs). We apply the Exact WKB analysis to a massless scalar
perturbation to the D3-brane metric as a concrete example. The Exact WKB
analysis provides an exact condition for the QNMs. We numerically check our
exact condition by using the Borel-Pad\'{e} approximation. We also present an
analytic form and an asymptotic behavior of the QNMs.
|
[{'version': 'v1', 'created': 'Wed, 20 Jul 2022 15:12:19 GMT'}
{'version': 'v2', 'created': 'Thu, 28 Jul 2022 11:12:59 GMT'}
{'version': 'v3', 'created': 'Wed, 28 Sep 2022 08:05:00 GMT'}]
|
2022-09-29
|
[array(['Imaizumi', 'Keita', ''], dtype=object)]
|
17,648 |
hep-ph/9812342
|
Atsushi Taruya
|
A.Taruya
|
Parametric Amplification of Density Perturbation in the Oscillating
inflation
|
11 pages, 5 Encapsulated postscript figures, RevTeX, submitted to
Phys.Rev.D
|
Phys.Rev. D59 (1999) 103505
|
10.1103/PhysRevD.59.103505
| null |
hep-ph astro-ph gr-qc
| null |
We study the adiabatic density perturbation in the {\it oscillating
inflation}, proposed by Damour and Mukhanov. The recent study of the
cosmological perturbation during reheating shows that the adiabatic fluctuation
behaves like as the perfect fluid and no significant amplification occurs on
super-horizon scales. In the oscillating inflation, however, the accelerated
expansion takes place during the oscillating stage and there might be a
possibility that the parametric amplification on small scales affects the
adiabatic long-wavelength perturbation. We analytically show that the density
perturbation neglecting the metric perturbation can be amplified by the
parametric resonance and the instability band becomes very broad during the
oscillating inflation. We examined this issue by solving the evolution equation
for perturbation numerically. We found that the parametric resonance is
strongly suppressed for the long wave modes comparable to the Hubble horizon.
The result indicates that the metric perturbation plays a crucial role for the
evolution of scalar field perturbation. Therefore, in the single field case,
there would be no significant imprint of the oscillating inflation on the
primordial spectrum of the adiabatic perturbation. However, it could be
expected that the oscillating inflation in the multi-field system gives the
enormous amplification on large scales, which may lead to the production of the
primordial black holes.
|
[{'version': 'v1', 'created': 'Sat, 12 Dec 1998 02:36:17 GMT'}]
|
2009-10-31
|
[array(['Taruya', 'A.', ''], dtype=object)]
|
17,649 |
2205.07681
|
Matthew R. Bate
|
Matthew R. Bate
|
Dust coagulation during the early stages of star formation: molecular
cloud collapse and first hydrostatic core evolution
|
Accepted for publication in MNRAS. 17 pages, 14 figures. 5 animations
available at: http://www.astro.ex.ac.uk/people/mbate/Research/DustGrowth.html
| null |
10.1093/mnras/stac1391
| null |
astro-ph.GA astro-ph.EP astro-ph.SR
|
http://creativecommons.org/licenses/by/4.0/
|
Planet formation in protoplanetary discs requires dust grains to coagulate
from the sub-micron sizes that are found in the interstellar medium into much
larger objects. For the first time, we study the growth of dust grains during
the earliest phases of star formation using three-dimensional hydrodynamical
simulations. We begin with a typical interstellar dust grain size distribution
and study dust growth during the collapse of a molecular cloud core and the
evolution of the first hydrostatic core, prior to the formation of the stellar
core. We examine how the dust size distribution evolves both spatially and
temporarily. We find that the envelope maintains its initial population of
small dust grains with little growth during these phases, except that in the
inner few hundreds of au the smallest grains are depleted. However, once the
first hydrostatic core forms rapid dust growth to sizes in excess of $100~\mu$m
occurs within the core (before stellar core formation). Progressively larger
grains are produced at smaller distances from the centre of the core. In
rapidly-rotating molecular cloud cores, the `first hydrostatic core' that forms
is better described as a pre-stellar disc that may be gravitationally unstable.
In such cases, grain growth is more rapid in the spiral density waves leading
to the larger grains being preferentially found in the spiral waves even though
there is no migration of grains relative to the gas. Thus, the grain size
distribution can vary substantially in the first core/pre-stellar disc even at
these very early times.
|
[{'version': 'v1', 'created': 'Mon, 16 May 2022 13:49:00 GMT'}]
|
2022-06-01
|
[array(['Bate', 'Matthew R.', ''], dtype=object)]
|
17,650 |
2306.03791
|
Luiz Capretz Dr.
|
Saiqa Aleem, Luiz Fernando Capretz, Faheem Ahmed
|
A Reference Framework for Variability Management of Software Product
Lines
|
24 pages
|
Computer and Information Science; Vol. 16, No. 1; pp. 1-24, 2023
|
10.5539/cis.v16n1p1
| null |
cs.SE
|
http://creativecommons.org/licenses/by/4.0/
|
Variability management (VM) in software product line engineering (SPLE) is
introduced as an abstraction that enables the reuse and customization of
assets. VM is a complex task involving the identification, representation, and
instantiation of variability for specific products, as well as the evolution of
variability itself. This work presents a comparison and contrast between
existing VM approaches using qualitative meta-synthesis to determine the
underlying perspectives, metaphors, and concepts of existing methods. A common
frame of reference for the VM was proposed as the result of this analysis.
Putting metaphors in the context of the dimensions in which variability occurs
and identifying its key concepts provides a better understanding of its
management and enables several analyses and evaluation opportunities. Finally,
the proposed framework was evaluated using a qualitative study approach. The
results of the evaluation phase suggest that the organizations in practice only
focus on one dimension. The presented frame of reference will help the
organization to cover this gap in practice.
|
[{'version': 'v1', 'created': 'Tue, 6 Jun 2023 15:38:31 GMT'}]
|
2023-06-07
|
[array(['Aleem', 'Saiqa', ''], dtype=object)
array(['Capretz', 'Luiz Fernando', ''], dtype=object)
array(['Ahmed', 'Faheem', ''], dtype=object)]
|
17,651 |
0909.0525
|
Silvia Leurini
|
S. Leurini (ESO), C. Codella (INAF), L. A. Zapata (MPIfR), A. Belloche
(MPIfR), T. Stanke (ESO), F. Wyrowski (MPIfR), P. Schilke (MPIfR, Uni Koeln),
K. M. Menten (MPIfR), R. Guesten (MPIfR)
|
Extremely high velocity gas from the massive YSOs in IRAS 17233-3606
|
accepted for publication in A&A
| null |
10.1051/0004-6361/200912783
| null |
astro-ph.SR astro-ph.GA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Molecular outflows from high-mass young stellar objects provide an excellent
way to study the star formation process, and investigate if they are scaled-up
versions of their low-mass counterparts. We selected the nearby massive star
forming region IRAS 17233-3606 in order to study the kinematics and physics
along the molecular outflow(s) originating from this source. We observed IRAS
17233-3606 in CO, a typical tracer of gas associated with molecular outflow,
with the Submillimeter Array in the (2-1) transition, and with the APEX
telescope in the higher excitation (6-5) line. Additional infrared H2
observations were performed with the UKIRT telescope. The CO data were analysed
using a LVG approach. Our data resolve the previously detected molecular
outflow in at least three different components, one of them with a high
collimation factor ~4, and characterised by emission at extremely high
velocities (|v-v_{LSR}|>120 km s^{-1}). The estimate of the kinematical outflow
parameters are typical of massive YSOs, and in agreement with the measured
bolometric luminosity of the source. The kinematic ages of the flows are in the
range 10^2-10^3 yr, and therefore point to young objects that still did not
reach the main sequence.
|
[{'version': 'v1', 'created': 'Wed, 2 Sep 2009 20:26:22 GMT'}]
|
2015-05-14
|
[array(['Leurini', 'S.', '', 'ESO'], dtype=object)
array(['Codella', 'C.', '', 'INAF'], dtype=object)
array(['Zapata', 'L. A.', '', 'MPIfR'], dtype=object)
array(['Belloche', 'A.', '', 'MPIfR'], dtype=object)
array(['Stanke', 'T.', '', 'ESO'], dtype=object)
array(['Wyrowski', 'F.', '', 'MPIfR'], dtype=object)
array(['Schilke', 'P.', '', 'MPIfR, Uni Koeln'], dtype=object)
array(['Menten', 'K. M.', '', 'MPIfR'], dtype=object)
array(['Guesten', 'R.', '', 'MPIfR'], dtype=object)]
|
17,652 |
1103.5346
|
Nikolaos Bagkis
|
Nikos Bagis
|
The First Derivative of Ramanujans Cubic Continued Fraction
|
8 pages
| null | null | null |
math.GM
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We give the complete evaluation of the first derivative of the Ramanujans
cubic continued fraction using Elliptic functions. The Elliptic functions are
easy to handle and give the results in terms of Gamma functions and radicals
from tables.
|
[{'version': 'v1', 'created': 'Thu, 24 Mar 2011 09:02:02 GMT'}]
|
2011-03-29
|
[array(['Bagis', 'Nikos', ''], dtype=object)]
|
17,653 |
1910.08914
|
Yuhang Li
|
Yuhang Li, Xuejin Chen, Feng Wu, and Zheng-Jun Zha
|
LinesToFacePhoto: Face Photo Generation from Lines with Conditional
Self-Attention Generative Adversarial Network
| null | null | null | null |
cs.CV eess.IV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper, we explore the task of generating photo-realistic face images
from lines. Previous methods based on conditional generative adversarial
networks (cGANs) have shown their power to generate visually plausible images
when a conditional image and an output image share well-aligned structures.
However, these models fail to synthesize face images with a whole set of
well-defined structures, e.g. eyes, noses, mouths, etc., especially when the
conditional line map lacks one or several parts. To address this problem, we
propose a conditional self-attention generative adversarial network (CSAGAN).
We introduce a conditional self-attention mechanism to cGANs to capture
long-range dependencies between different regions in faces. We also build a
multi-scale discriminator. The large-scale discriminator enforces the
completeness of global structures and the small-scale discriminator encourages
fine details, thereby enhancing the realism of generated face images. We
evaluate the proposed model on the CelebA-HD dataset by two perceptual user
studies and three quantitative metrics. The experiment results demonstrate that
our method generates high-quality facial images while preserving facial
structures. Our results outperform state-of-the-art methods both quantitatively
and qualitatively.
|
[{'version': 'v1', 'created': 'Sun, 20 Oct 2019 07:05:24 GMT'}]
|
2019-10-22
|
[array(['Li', 'Yuhang', ''], dtype=object)
array(['Chen', 'Xuejin', ''], dtype=object)
array(['Wu', 'Feng', ''], dtype=object)
array(['Zha', 'Zheng-Jun', ''], dtype=object)]
|
17,654 |
cond-mat/0102031
| null |
Grzegorz Kondrat and Andrzej P\c{e}kalski (Institute of Theoretical
Physics, University of Wroc{\l}aw, Wroc{\l}aw, Poland)
|
Percolation and jamming in random sequential adsorption of linear
segments on square lattice
| null | null |
10.1103/PhysRevE.63.051108
| null |
cond-mat.dis-nn
| null |
We present the results of study of random sequential adsorption of linear
segments (needles) on sites of a square lattice. We show that the percolation
threshold is a nonmonotonic function of the length of the adsorbed needle,
showing a minimum for a certain length of the needles, while the jamming
threshold decreases to a constant with a power law. The ratio of the two
thresholds is also nonmonotonic and it remains constant only in a restricted
range of the needles length. We determine the values of the correlation length
exponent for percolation, jamming and their ratio.
|
[{'version': 'v1', 'created': 'Fri, 2 Feb 2001 12:19:12 GMT'}]
|
2009-11-07
|
[array(['Kondrat', 'Grzegorz', '',
'Institute of Theoretical\n Physics, University of Wrocław, Wrocław, Poland'],
dtype=object)
array(['Pȩkalski', 'Andrzej', '',
'Institute of Theoretical\n Physics, University of Wrocław, Wrocław, Poland'],
dtype=object) ]
|
17,655 |
1802.06550
|
Dimitar Ivanov Mr.
|
Dimitar Ivanov, Stefano Liberati, Matteo Viel, and Matt Visser
|
Non-perturbative results for the luminosity and area distances
|
V1: 1+24 pages. V2: 3 references added; no physics changes. V3:
changes in style and presentation
|
JCAP06(2018)040
|
10.1088/1475-7516/2018/06/040
| null |
gr-qc astro-ph.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The notion of luminosity distance is most often defined in purely FLRW
(Friedmann-Lemaitre-Robertson-Walker) cosmological spacetimes, or small
perturbations thereof. However, the abstract notion of luminosity distance is
actually much more robust than this, and can be defined non-perturbatively in
almost arbitrary spacetimes. Some quite general results are already known, in
terms of $dA_\mathrm{observer}/d\Omega_\mathrm{source}$, the cross-sectional
area per unit solid angle of a null geodesic spray emitted from some source and
subsequently detected by some observer. We shall reformulate these results in
terms of a suitably normalized null geodesic affine parameter and the van Vleck
determinant, $\Delta_{vV}$. The contribution due to the null geodesic affine
parameter is effectively the inverse square law for luminosity, and the van
Vleck determinant can be viewed as providing a measure of deviations from the
inverse square law. This formulation is closely related to the so-called Jacobi
determinant, but the van Vleck determinant has somewhat nicer analytic
properties and wider and deeper theoretical base in the general relativity,
quantum physics, and quantum field theory communities. In the current article
we shall concentrate on non-perturbative results, leaving near-FLRW
perturbative investigation for future work.
|
[{'version': 'v1', 'created': 'Mon, 19 Feb 2018 08:44:08 GMT'}
{'version': 'v2', 'created': 'Mon, 26 Feb 2018 08:38:45 GMT'}
{'version': 'v3', 'created': 'Sat, 30 Jun 2018 20:05:45 GMT'}]
|
2018-07-03
|
[array(['Ivanov', 'Dimitar', ''], dtype=object)
array(['Liberati', 'Stefano', ''], dtype=object)
array(['Viel', 'Matteo', ''], dtype=object)
array(['Visser', 'Matt', ''], dtype=object)]
|
17,656 |
1112.5880
|
Cristina Acciarri
|
Cristina Acciarri, Pavel Shumyatsky
|
Centralizers of coprime automorphisms of finite groups
|
10 pages, submitted
| null | null | null |
math.GR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Let $A$ be an elementary abelian group of order $p^{k}$ with $k\geq 3$ acting
on a finite $p'$-group $G$. The following results are proved.
If $\gamma_{k-2}(C_{G}(a))$ is nilpotent of class at most $c$ for any $a\in
A^{#}$, then $\gamma_{k-2}(G)$ is nilpotent and has $\{c,k,p\}$-bounded
nilpotency class.
If, for some integer $d$ such that $2^{d}+2\leq k$, the $d$th derived group
of $C_{G}(a)$ is nilpotent of class at most $c$ for any $a\in A^{#}$, then the
$d$th derived group $G^{(d)}$ is nilpotent and has $\{c,k,p\}$-bounded
nilpotency class.
Earlier this was known only in the case where $k\leq 4$.
|
[{'version': 'v1', 'created': 'Mon, 26 Dec 2011 18:52:08 GMT'}]
|
2011-12-30
|
[array(['Acciarri', 'Cristina', ''], dtype=object)
array(['Shumyatsky', 'Pavel', ''], dtype=object)]
|
17,657 |
2003.03494
|
Fatih Erden
|
Fatih Erden, Chethan K. Anjinappa, Ender Ozturk, and Ismail Guvenc
|
Outdoor mmWave Base Station Placement: A Multi-Armed Bandit Learning
Approach
| null | null | null | null |
eess.SP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Base station (BS) placement in mobile networks is critical to the efficient
use of resources in any communication system and one of the main factors that
determines the quality of communication. Although there is ample literature on
the optimum placement of BSs for sub-6 GHz bands, channel propagation
characteristics, such as penetration loss, are notably different in
millimeter-wave (mmWave) bands than in sub-6 GHz bands. Therefore, designated
solutions are needed for mmWave systems to have reliable quality of service
(QoS) assessment. This article proposes a multi-armed bandit (MAB) learning
approach for the mmWave BS placement problem. The proposed solution performs
viewshed analysis to identify the areas that are visible to a given BS location
by considering the 3D geometry of the outdoor environments. Coverage
probability, which is used as the QoS metric, is calculated using the
appropriate path loss model depending on the viewshed analysis and a
probabilistic blockage model and then fed to the MAB learning mechanism. The
optimum BS location is then determined based on the expected reward that the
candidate locations attain at the end of the training process. Unlike the
optimization-based techniques, this method can capture the time-varying
behavior of the channel and find the optimal BS locations that maximize
long-term performance.
|
[{'version': 'v1', 'created': 'Sat, 7 Mar 2020 02:31:16 GMT'}]
|
2020-03-10
|
[array(['Erden', 'Fatih', ''], dtype=object)
array(['Anjinappa', 'Chethan K.', ''], dtype=object)
array(['Ozturk', 'Ender', ''], dtype=object)
array(['Guvenc', 'Ismail', ''], dtype=object)]
|
17,658 |
1507.00263
|
Makoto Naruse
|
Makoto Naruse, Takeharu Tani, Tetsuya Inoue, Hideki Yasuda, Hirokazu
Hori, and Masayuki Naya
|
Local circular polarizations in nanostructures induced by linear
polarization via optical near-fields
| null | null |
10.1364/JOSAB.32.001797
| null |
physics.optics
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We previously reported [Naruse, et al. Sci. Rep. 4, 6077, 2014] that the
geometrical randomness of disk-shaped silver nanoparticles, which exhibit high
reflection at near-infrared wavelengths, serves as the origin of a
particle-dependent localization and hierarchical distribution of optical
near-fields in the vicinity of the nanostructure. In this study, we show that
the induced polarizations are circular, particularly at resonant wavelengths.
We formulate optical near-field processes between nanostructures, accounting
for their polarizations and geometries, and attribute circular polarization to
the layout-dependent phase difference between the electrical susceptibilities
associated with longitudinal and transverse-electric components. This study
clarifies the fundamental optical properties of random nanostructured matter
and offers generic theoretical concepts for implementing nanoscale
polarizations of optical near-fields.
|
[{'version': 'v1', 'created': 'Wed, 1 Jul 2015 15:35:03 GMT'}]
|
2015-10-28
|
[array(['Naruse', 'Makoto', ''], dtype=object)
array(['Tani', 'Takeharu', ''], dtype=object)
array(['Inoue', 'Tetsuya', ''], dtype=object)
array(['Yasuda', 'Hideki', ''], dtype=object)
array(['Hori', 'Hirokazu', ''], dtype=object)
array(['Naya', 'Masayuki', ''], dtype=object)]
|
17,659 |
1003.4497
|
Douglas Higinbotham
|
D. W. Higinbotham, J. Gomez, E. Piasetzky
|
Nuclear Scaling and the EMC Effect
|
14 pages, 3 figures, 1 table
| null | null |
JLAB-PHY-10-1158
|
hep-ph nucl-ex nucl-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Results of recent EMC effect measurements and nuclear scaling measurements
have both been attributed to local nuclear density effects and not properties
of the bulk nuclear system. This lead us to the phenomenological observation
that the ratio of the slopes in the 0.3 < x_B < 0.7 EMC data scale as the ratio
of the x_B > 1 nuclear scaling plateaus. Using this correlation, we developed a
phenomenological relation which reproduces the general trends and features of
the EMC effect for nuclei from 3He to 56Fe.
|
[{'version': 'v1', 'created': 'Tue, 23 Mar 2010 19:39:33 GMT'}
{'version': 'v2', 'created': 'Mon, 20 Sep 2010 12:12:10 GMT'}]
|
2010-09-21
|
[array(['Higinbotham', 'D. W.', ''], dtype=object)
array(['Gomez', 'J.', ''], dtype=object)
array(['Piasetzky', 'E.', ''], dtype=object)]
|
17,660 |
physics/0306098
|
Bernard F. Riley
|
B. F. Riley
|
A unified model of particle mass
|
28 pages, including 12 figures
| null | null | null |
physics.gen-ph
| null |
The quark masses evaluated by the Particle Data Group are consistent with
terms in a geometric progression of mass values descending from the Planck
Mass. The common ratio of the sequence is 2/pi. The quarks occupy the
'principal' levels of the mass spectrum, characterised by a new quantum number,
n. Hadrons occupy mass sub-levels, characterised by fractional values of n. The
quark masses of the model are used to formulate hadron mass construction
equations based on the masses of neutral precursor particles. Hadron mass
partnerships occur, in which mass differences arising from differences in spin,
isospin and isospin projection are equal to the masses of principal levels.
Mass partnerships also occur between charged leptons and pseudoscalar mesons.
|
[{'version': 'v1', 'created': 'Thu, 12 Jun 2003 20:52:42 GMT'}]
|
2007-05-23
|
[array(['Riley', 'B. F.', ''], dtype=object)]
|
17,661 |
hep-th/0008243
|
Mariane Mangin-Brinet
|
M. Mangin-Brinet, J. Carbonell and V.A. Karmanov
|
Weak binding limit and non zero angular momentum states in Light-Front
Dynamics
|
To appear in Nucl.Phys.B, 6 pages, 3 figures, .tar.gz file
|
Nucl.Phys.Proc.Suppl.90:123-126,2000
|
10.1016/S0920-5632(00)00885-9
| null |
hep-th
| null |
We show some results concerning the weak binding limit for J=0 states --
which turn out to strongly differ from the non relativistic case -- together
with the construction of non zero angular momentum states. The calculation of
such states in the Light-Front Dynamics (LFD) framework has some peculiarities
which are absent in other approaches. They are related to the fact that the
rotation generators contain interaction. We present here the construction of
non zero angular momentum states in LFD and show how it leads to a restoration
of rotational invariance. For this purpose, the use of Light-Front Dynamics in
its explicitly covariant formulation is of crucial importance since the
dependence of the wave function on the light-front plane is explicitly
parametrized.
|
[{'version': 'v1', 'created': 'Thu, 31 Aug 2000 08:21:19 GMT'}]
|
2010-11-19
|
[array(['Mangin-Brinet', 'M.', ''], dtype=object)
array(['Carbonell', 'J.', ''], dtype=object)
array(['Karmanov', 'V. A.', ''], dtype=object)]
|
17,662 |
2010.01674
|
Lang Zhao
|
Lang Zhao, Tyler Tallman, Guang Lin
|
Spatial Damage Characterization in Self-Sensing Materials via Neural
Network-Aided Electrical Impedance Tomography: A Computational Study
| null | null | null | null |
eess.IV cs.LG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Continuous structural health monitoring (SHM) and integrated nondestructive
evaluation (NDE) are important for ensuring the safe operation of high-risk
engineering structures. Recently, piezoresistive nanocomposite materials have
received much attention for SHM and NDE. These materials are self-sensing
because their electrical conductivity changes in response to deformation and
damage. Combined with electrical impedance tomography (EIT), it is possible to
map deleterious effects. However, EIT suffers from important limitations -- it
is computationally expensive, provides indistinct information on damage shape,
and can miss multiple damages if they are close together. In this article we
apply a novel neural network approach to quantify damage metrics such as size,
number, and location from EIT data. This network is trained using a simulation
routine calibrated to experimental data for a piezoresistive carbon
nanofiber-modified epoxy. Our results show that the network can predict the
number of damages with 99.2% accuracy, quantify damage size with respect to the
averaged radius at an average of 2.46% error, and quantify damage position with
respect to the domain length at an average of 0.89% error. These results are an
important first step in translating the combination of self-sensing materials
and EIT to real-world SHM and NDE.
|
[{'version': 'v1', 'created': 'Sun, 4 Oct 2020 20:28:35 GMT'}]
|
2020-10-06
|
[array(['Zhao', 'Lang', ''], dtype=object)
array(['Tallman', 'Tyler', ''], dtype=object)
array(['Lin', 'Guang', ''], dtype=object)]
|
17,663 |
hep-th/9902205
|
Andrei Mironov
|
H.W.Braden, A.Marshakov, A.Mironov and A.Morozov
|
The Ruijsenaars-Schneider Model in the Context of Seiberg-Witten Theory
|
18 pages, LaTeX
|
Nucl.Phys.B558:371-390,1999
|
10.1016/S0550-3213(99)00414-9
| null |
hep-th
| null |
The compactification of five dimensional N=2 SUSY Yang-Mills (YM) theory onto
a circle provides a four dimensional YM model with N=4 SUSY. This supersymmetry
can be broken down to N=2 if non-trivial boundary conditions in the compact
dimension, \phi(x_5 +R) = e^{2\pi i\epsilon}\phi(x_5), are imposed on half of
the fields. This two-parameter (R,\epsilon) family of compactifications
includes as particular limits most of the previously studied four dimensional
N=2 SUSY YM models with supermultiplets in the adjoint representation of the
gauge group. The finite-dimensional integrable system associated to these
theories via the Seiberg-Witten construction is the generic elliptic
Ruijsenaars-Schneider model. In particular the perturbative (weak coupling)
limit is described by the trigonometric Ruijsenaars-Schneider model.
|
[{'version': 'v1', 'created': 'Fri, 26 Feb 1999 19:24:19 GMT'}]
|
2014-11-18
|
[array(['Braden', 'H. W.', ''], dtype=object)
array(['Marshakov', 'A.', ''], dtype=object)
array(['Mironov', 'A.', ''], dtype=object)
array(['Morozov', 'A.', ''], dtype=object)]
|
17,664 |
0704.2875
|
Zheng-Yu Weng
|
Zheng-Yu Weng
|
Phase String Theory for Doped Antiferromagnets
|
40 pages, 31 figures, a brief review appearing on March 10, 2007
|
Int. J. Mod. Phys. B21, 773-827 (2007)
|
10.1142/S0217979207036722
| null |
cond-mat.str-el cond-mat.supr-con
| null |
The recent developments of the phase string theory for doped antiferromagnets
will be briefly reviewed. Such theory is built upon a singular phase string
effect induced by the motion of holes in a doped antiferromagnet, which as a
precise property of the t-J model dictates the novel competition between the
charge and spin degrees of freedom. A global phase diagram including the
antiferromagnetic, superconducting, lower and upper pseudogap, and
high-temperature "normal" phases, as well as a series of anomalous physical
properties of these phases will be presented as the self-consistent and
systematic consequences of the phase string theory.
|
[{'version': 'v1', 'created': 'Sun, 22 Apr 2007 10:49:19 GMT'}]
|
2007-05-23
|
[array(['Weng', 'Zheng-Yu', ''], dtype=object)]
|
17,665 |
2009.12789
|
Yann Dubois
|
Yann Dubois, Douwe Kiela, David J. Schwab, Ramakrishna Vedantam
|
Learning Optimal Representations with the Decodable Information
Bottleneck
|
Accepted at NeurIPS 2020
| null | null | null |
cs.LG cs.IT math.IT stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We address the question of characterizing and finding optimal representations
for supervised learning. Traditionally, this question has been tackled using
the Information Bottleneck, which compresses the inputs while retaining
information about the targets, in a decoder-agnostic fashion. In machine
learning, however, our goal is not compression but rather generalization, which
is intimately linked to the predictive family or decoder of interest (e.g.
linear classifier). We propose the Decodable Information Bottleneck (DIB) that
considers information retention and compression from the perspective of the
desired predictive family. As a result, DIB gives rise to representations that
are optimal in terms of expected test performance and can be estimated with
guarantees. Empirically, we show that the framework can be used to enforce a
small generalization gap on downstream classifiers and to predict the
generalization ability of neural networks.
|
[{'version': 'v1', 'created': 'Sun, 27 Sep 2020 08:33:08 GMT'}
{'version': 'v2', 'created': 'Fri, 16 Jul 2021 09:22:20 GMT'}]
|
2021-07-19
|
[array(['Dubois', 'Yann', ''], dtype=object)
array(['Kiela', 'Douwe', ''], dtype=object)
array(['Schwab', 'David J.', ''], dtype=object)
array(['Vedantam', 'Ramakrishna', ''], dtype=object)]
|
17,666 |
astro-ph/0206345
|
Georg Kreyerhoff
|
Saul Barshay, Georg Kreyerhoff
|
Very high-energy neutrinos from slowly decaying, massive dark matter, as
a source of explosive energy for gamma-ray bursts
|
12 pages, no figure
|
Mod.Phys.Lett.A18:477-490,2003; Erratum-ibid.A18:875,2003;
Erratum-ibid.A19:783,2004
|
10.1142/S0217732303009654
| null |
astro-ph
| null |
We consider a speculative model for gamma-ray bursts (GRB), which predicts
that the total kinetic energy in the ejected matter is less than the total
energy in the gamma rays. There is also secondary energy in X-rays, which are
emitted contemporaneously with the gamma rays. The model suggests that
bremsstrahlung and Compton up-scattering by very energetic electrons, are
important processes for producing the observed burst radiation. The dynamics
naturally allows for the possibility of a moderate degree of beaming of matter
and radiation in some gamma-ray bursts. GRB are predicted to have an
intrinsically wide distribution in total energies, in particular, on the low
side. They are predicted to occur out to large red-shifts, z~8, in local
regions of dense matter.
|
[{'version': 'v1', 'created': 'Wed, 19 Jun 2002 22:38:50 GMT'}]
|
2010-11-15
|
[array(['Barshay', 'Saul', ''], dtype=object)
array(['Kreyerhoff', 'Georg', ''], dtype=object)]
|
17,667 |
1905.03727
|
Haiping Hu
|
Haiping Hu, Biao Huang, Erhai Zhao, and W. Vincent Liu
|
Dynamical Singularities of Floquet Higher-Order Topological Insulators
|
6+9 pages, including Supplementary materials
|
Phys. Rev. Lett. 124, 057001 (2020)
|
10.1103/PhysRevLett.124.057001
| null |
cond-mat.mes-hall quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We propose a versatile framework to dynamically generate Floquet higher-order
topological insulators by multi-step driving of topologically trivial
Hamiltonians. Two analytically solvable examples are used to illustrate this
procedure to yield Floquet quadrupole and octupole insulators with zero- and/or
$\pi$-corner modes protected by mirror symmetries. Furthermore, we introduce
dynamical topological invariants from the full unitary return map and show its
phase bands contain Weyl singularities whose topological charges form dynamical
multipole moments in the Brillouin zone. Combining them with the topological
index of Floquet Hamiltonian gives a pair of $\mathbb{Z}_2$ invariant $\nu_0$
and $\nu_\pi$ which fully characterize the higher-order topology and predict
the appearance of zero- and $\pi$-corner modes. Our work establishes a
systematic route to construct and characterize Floquet higher-order topological
phases.
|
[{'version': 'v1', 'created': 'Thu, 9 May 2019 16:07:48 GMT'}
{'version': 'v2', 'created': 'Mon, 3 Feb 2020 21:38:56 GMT'}]
|
2020-02-05
|
[array(['Hu', 'Haiping', ''], dtype=object)
array(['Huang', 'Biao', ''], dtype=object)
array(['Zhao', 'Erhai', ''], dtype=object)
array(['Liu', 'W. Vincent', ''], dtype=object)]
|
17,668 |
gr-qc/9904003
|
David I. Santiago
|
David I. Santiago, Alexander S. Silbergleit
|
On the Energy-Momentum Tensor of the Scalar Field in Scalar--Tensor
Theories of Gravity
|
Submitted to Phys. Rev D15, 10 pages. Uses ReVTeX macros
|
Gen.Rel.Grav. 32 (2000) 565-581
|
10.1023/A:1001902715613
| null |
gr-qc
| null |
We study the dynamical description of gravity, the appropriate definition of
the scalar field energy-momentum tensor, and the interrelation between them in
scalar-tensor theories of gravity. We show that the quantity which one would
naively identify as the energy-momentum tensor of the scalar field is not
appropriate because it is spoiled by a part of the dynamical description of
gravity. A new connection can be defined in terms of which the full dynamical
description of gravity is explicit, and the correct scalar field
energy-momentum tensor can be immediately identified. Certain inequalities must
be imposed on the two free functions (the coupling function and the potential)
that define a particular scalar-tensor theory, to ensure that the scalar field
energy density never becomes negative. The correct dynamical description leads
naturally to the Einstein frame formulation of scalar-tensor gravity which is
also studied in detail.
|
[{'version': 'v1', 'created': 'Fri, 2 Apr 1999 01:59:11 GMT'}]
|
2015-06-25
|
[array(['Santiago', 'David I.', ''], dtype=object)
array(['Silbergleit', 'Alexander S.', ''], dtype=object)]
|
17,669 |
1103.5813
|
James Eckstein
|
Yize Stephanie Li, Mao Zheng, Brian Mulcahy, Laura H. Greene, and
James N. Eckstein
|
Growth and Properties of Heavy Fermion CeCu2Ge2 and CeFe2Ge2 thin films
| null | null |
10.1063/1.3610975
| null |
cond-mat.mtrl-sci cond-mat.str-el
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Epitaxial films of heavy fermion CeCu2Ge2 and CeFe2Ge2 are grown on DyScO3
and MgO substrates using molecular beam epitaxy. The growth begins via island
nucleation leading to a granular morphology. The grains grow flat with c-axis
orientation after nucleating, as indicated by in-situ reflection high energy
electron diffraction (RHEED) and ex-situ analysis including atomic force
microscopy (AFM) and x-ray diffraction (XRD). These single phase films show
similar temperature dependent transport to single crystals of the materials
indicating that similar collective order occurs in the films as in single
crystals.
|
[{'version': 'v1', 'created': 'Wed, 30 Mar 2011 02:49:02 GMT'}]
|
2015-05-27
|
[array(['Li', 'Yize Stephanie', ''], dtype=object)
array(['Zheng', 'Mao', ''], dtype=object)
array(['Mulcahy', 'Brian', ''], dtype=object)
array(['Greene', 'Laura H.', ''], dtype=object)
array(['Eckstein', 'James N.', ''], dtype=object)]
|
17,670 |
1410.6386
|
Rinaldo Schinazi
|
Rinaldo B. Schinazi
|
Survival under high mutation rates
| null | null | null | null |
q-bio.PE math.PR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider a stochastic model for an evolving population. We show that in
the presence of genotype extinctions the population dies out for a low mutation
probability but may survive for a high mutation probability. This turns upside
down the widely held belief that above a certain mutation threshold a
population cannot survive.
|
[{'version': 'v1', 'created': 'Thu, 23 Oct 2014 15:01:35 GMT'}]
|
2014-10-24
|
[array(['Schinazi', 'Rinaldo B.', ''], dtype=object)]
|
17,671 |
1510.00044
|
Alexis A. Aguilar-Arevalo Dr.
|
DAMIC Collaboration: A. Aguilar-Arevalo, D. Amidei, X. Bertou, D.
Boule, M. Butner, G. Cancelo, A. Casta\~neda V\'azquez, A. E. Chavarr\'ia, J.
R. T. de Melo Neto, S. Dixon, J. C. D'Olivo, J. Estrada, G. Fernandez Moroni,
K. P. Hern\'andez Torres, F. Izraelevitch, A. Kavner, B. Kilminster, I.
Lawson, J. Liao, M. L\'opez, J. Molina, G. Moreno-Granados, J. Pena, P.
Privitera, Y. Sarkis, V. Scarpine, T. Schwartz, M. Sofo Haro, J. Tiffenberg,
D. Torres Machado, F. Trillaud, X. You and J. Zhou
|
Status of the DAMIC direct dark matter search experiment
|
Talk presented CIPANP2015. 9 pages, PDFLaTeX, 11 PDF figures,
econfmacros LaTeX file
| null | null |
CIPANP2015-Aguilar-Arevalo
|
physics.ins-det astro-ph.IM hep-ex
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The DAMIC experiment uses fully depleted, high resistivity CCDs to search for
dark matter particles. With an energy threshold $\sim$50 eV$_{ee}$, and
excellent energy and spatial resolutions, the DAMIC CCDs are well-suited to
identify and suppress radioactive backgrounds, having an unrivaled sensitivity
to WIMPs with masses $<$6 GeV/$c^2$. Early results motivated the construction
of a 100 g detector, DAMIC100, currently being installed at SNOLAB. This
contribution discusses the installation progress, new calibration efforts near
the threshold, a preliminary result with 2014 data, and the prospects for
physics results after one year of data taking.
|
[{'version': 'v1', 'created': 'Wed, 30 Sep 2015 21:34:30 GMT'}
{'version': 'v2', 'created': 'Tue, 8 Dec 2015 17:14:10 GMT'}]
|
2015-12-09
|
[array(['DAMIC Collaboration', '', ''], dtype=object)
array(['Aguilar-Arevalo', 'A.', ''], dtype=object)
array(['Amidei', 'D.', ''], dtype=object)
array(['Bertou', 'X.', ''], dtype=object)
array(['Boule', 'D.', ''], dtype=object)
array(['Butner', 'M.', ''], dtype=object)
array(['Cancelo', 'G.', ''], dtype=object)
array(['Vázquez', 'A. Castañeda', ''], dtype=object)
array(['Chavarría', 'A. E.', ''], dtype=object)
array(['Neto', 'J. R. T. de Melo', ''], dtype=object)
array(['Dixon', 'S.', ''], dtype=object)
array(["D'Olivo", 'J. C.', ''], dtype=object)
array(['Estrada', 'J.', ''], dtype=object)
array(['Moroni', 'G. Fernandez', ''], dtype=object)
array(['Torres', 'K. P. Hernández', ''], dtype=object)
array(['Izraelevitch', 'F.', ''], dtype=object)
array(['Kavner', 'A.', ''], dtype=object)
array(['Kilminster', 'B.', ''], dtype=object)
array(['Lawson', 'I.', ''], dtype=object)
array(['Liao', 'J.', ''], dtype=object)
array(['López', 'M.', ''], dtype=object)
array(['Molina', 'J.', ''], dtype=object)
array(['Moreno-Granados', 'G.', ''], dtype=object)
array(['Pena', 'J.', ''], dtype=object)
array(['Privitera', 'P.', ''], dtype=object)
array(['Sarkis', 'Y.', ''], dtype=object)
array(['Scarpine', 'V.', ''], dtype=object)
array(['Schwartz', 'T.', ''], dtype=object)
array(['Haro', 'M. Sofo', ''], dtype=object)
array(['Tiffenberg', 'J.', ''], dtype=object)
array(['Machado', 'D. Torres', ''], dtype=object)
array(['Trillaud', 'F.', ''], dtype=object)
array(['You', 'X.', ''], dtype=object)
array(['Zhou', 'J.', ''], dtype=object)]
|
17,672 |
1605.00900
|
Zhi-zhong Xing
|
Yu-Feng Li, Yifang Wang, Zhi-zhong Xing
|
Terrestrial matter effects on reactor antineutrino oscillations at JUNO
or RENO-50: how small is small?
|
LaTex 16 pages, 7 figures, more discussions and references added.
Accepted for publication in Chinese Physics C
| null |
10.1088/1674-1137/40/9/091001
| null |
hep-ph hep-ex
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We have carefully examined, in both analytical and numerical ways, how small
the terrestrial matter effects can be in a given medium-baseline reactor
antineutrino oscillation experiment like JUNO or RENO-50. Taking the ongoing
JUNO experiment for example, we show that the inclusion of terrestrial matter
effects may reduce the sensitivity of the neutrino mass ordering measurement by
\Delta \chi^2_{\rm MO} \simeq 0.6, and a neglect of such effects may shift the
best-fit values of the flavor mixing angle \theta_{12} and the neutrino
mass-squared difference \Delta_{21} by about 1\sigma to 2\sigma in the future
data analysis. In addition, a preliminary estimate indicates that a 2\sigma
sensitivity of establishing the terrestrial matter effects can be achieved for
about 10 years of data taking at JUNO with the help of a proper near detector
implementation.
|
[{'version': 'v1', 'created': 'Tue, 3 May 2016 13:35:39 GMT'}
{'version': 'v2', 'created': 'Sun, 15 May 2016 01:42:09 GMT'}]
|
2016-09-21
|
[array(['Li', 'Yu-Feng', ''], dtype=object)
array(['Wang', 'Yifang', ''], dtype=object)
array(['Xing', 'Zhi-zhong', ''], dtype=object)]
|
17,673 |
1404.0112
|
Igor Kotelnikov
|
I. A. Kotelnikov and G. V. Stupakov
|
Electromagnetic surface waves on a conducting cylinder
|
22 pages, 7 figures
| null |
10.1016/j.physleta.2015.02.013
| null |
physics.optics
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study propagation of electromagnetic surface waves on a metal-air
interface in the case when the wave frequency is below the plasma frequency. We
derive a reduced wave equation for a metal cylinder with a given radius of
curvature. Using the Leontovich boundary condition we find solutions to this
equation which we classify as outgoing and incoming surface waves. We derive
the dispersion relations of the surface waves of both types and argue that the
earlier studies overlooked the waves of the second type although they are the
only type which can propagate on a planar metal-air boundary.
|
[{'version': 'v1', 'created': 'Tue, 1 Apr 2014 02:48:04 GMT'}
{'version': 'v2', 'created': 'Sun, 6 Jul 2014 08:13:25 GMT'}
{'version': 'v3', 'created': 'Tue, 19 Aug 2014 15:39:30 GMT'}
{'version': 'v4', 'created': 'Sun, 15 Feb 2015 05:31:23 GMT'}]
|
2015-02-17
|
[array(['Kotelnikov', 'I. A.', ''], dtype=object)
array(['Stupakov', 'G. V.', ''], dtype=object)]
|
17,674 |
1704.08997
|
Matthew England Dr
|
Russell Bradford, James H. Davenport, Matthew England, Hassan Errami,
Vladimir Gerdt, Dima Grigoriev, Charles Hoyt, Marek Kosta, Ovidiu Radulescu,
Thomas Sturm and Andreas Weber
|
A Case Study on the Parametric Occurrence of Multiple Steady States
|
Accepted into ISSAC 2017. This version has additional page showing
all 11 CAD trees discussed in Section 2.1.1
|
Proceedings of the 42nd International Symposium on Symbolic and
Algebraic Computation (ISSAC '17), pp. 45-52, ACM, 2017
|
10.1145/3087604.3087622
| null |
cs.SC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider the problem of determining multiple steady states for positive
real values in models of biological networks. Investigating the potential for
these in models of the mitogen-activated protein kinases (MAPK) network has
consumed considerable effort using special insights into the structure of
corresponding models. Here we apply combinations of symbolic computation
methods for mixed equality/inequality systems, specifically virtual
substitution, lazy real triangularization and cylindrical algebraic
decomposition. We determine multistationarity of an 11-dimensional MAPK network
when numeric values are known for all but potentially one parameter. More
precisely, our considered model has 11 equations in 11 variables and 19
parameters, 3 of which are of interest for symbolic treatment, and furthermore
positivity conditions on all variables and parameters.
|
[{'version': 'v1', 'created': 'Fri, 28 Apr 2017 16:37:12 GMT'}]
|
2017-08-08
|
[array(['Bradford', 'Russell', ''], dtype=object)
array(['Davenport', 'James H.', ''], dtype=object)
array(['England', 'Matthew', ''], dtype=object)
array(['Errami', 'Hassan', ''], dtype=object)
array(['Gerdt', 'Vladimir', ''], dtype=object)
array(['Grigoriev', 'Dima', ''], dtype=object)
array(['Hoyt', 'Charles', ''], dtype=object)
array(['Kosta', 'Marek', ''], dtype=object)
array(['Radulescu', 'Ovidiu', ''], dtype=object)
array(['Sturm', 'Thomas', ''], dtype=object)
array(['Weber', 'Andreas', ''], dtype=object)]
|
17,675 |
cond-mat/0207731
|
Pal Tegzes
|
P. Tegzes (1 and 2), T. Vicsek (2), P. Schiffer (1) ((1) Pennsylvania
State University, USA, (2) Eotvos University, Budapest, Hungary)
|
Avalanche Dynamics in Wet Granular Media
|
RevTeX4, 17 pages, 22 figures, some of them in color. In order to
decrease file sizes the resolution of the provided figures has been reduced.
The original figures and videos of avalanches are available at:
http://angel.elte.hu/~tegzes/condmat.html#ava_long
| null | null | null |
cond-mat.dis-nn
| null |
A detailed characterization of avalanche dynamics of wet granular media in a
rotating drum apparatus is presented. The results confirm the existence of the
three wetness regimes observed previously: the granular, the correlated and the
viscoplastic regime. These regimes show qualitatively different dynamic
behaviors which are reflected in all the investigated quantities. We discuss
the effect of interstitial liquid on the characteristic angles of the material
and on the avalanche size distribution. These data also reveal logarithmic
aging and allow us to map out the phase diagram of the dynamical behavior as a
function of liquid content and flow rate. Via quantitative measurements of the
flow velocity and the granular flux during avalanches, we characterize novel
avalanche types unique to wet media. We also explore the details of
viscoplastic flow (observed at the highest liquid contents) in which there are
lasting contacts during flow, leading to coherence across the entire sample.
This coherence leads to a velocity independent flow depth at high rotation
rates and novel robust pattern formation in the granular surface.
|
[{'version': 'v1', 'created': 'Wed, 31 Jul 2002 09:00:26 GMT'}]
|
2007-05-23
|
[array(['Tegzes', 'P.', '', '1 and 2'], dtype=object)
array(['Vicsek', 'T.', ''], dtype=object)
array(['Schiffer', 'P.', ''], dtype=object)]
|
17,676 |
1505.01459
|
Pascal Giard
|
Pascal Giard, Gabi Sarkis, Claude Thibeault, and Warren J. Gross
|
Multi-mode Unrolled Architectures for Polar Decoders
|
11 pages, 9 figures, IEEE Transactions on Circuits and Systems I
| null |
10.1109/TCSI.2016.2586218
| null |
cs.AR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this work, we present a family of architectures for polar decoders using a
reduced-complexity successive-cancellation decoding algorithm that employs
unrolling to achieve extremely high throughput values while retaining moderate
implementation complexity. The resulting fully-unrolled, deeply-pipelined
architecture is capable of achieving a coded throughput in excess of 1 Tbps on
a 65 nm ASIC at 500 MHz---three orders of magnitude greater than current
state-of-the-art polar decoders. However, unrolled decoders are built for a
specific, fixed code. Therefore we also present a new method to enable the use
of multiple code lengths and rates in a fully-unrolled polar decoder
architecture. This method leads to a length- and rate-flexible decoder while
retaining the very high speed typical to unrolled decoders. The resulting
decoders can decode a master polar code of a given rate and length, and several
shorter codes of different rates and lengths. We present results for two
versions of a multi-mode decoder supporting eight and ten different polar
codes, respectively. Both are capable of a peak throughput of 25.6 Gbps. For
each decoder, the energy efficiency for the longest supported polar code is
shown to be of 14.8 pJ/bit at 250 MHz and of 8.8 pJ/bit at 500 MHz.
|
[{'version': 'v1', 'created': 'Wed, 6 May 2015 19:00:56 GMT'}
{'version': 'v2', 'created': 'Mon, 11 Jul 2016 08:38:06 GMT'}]
|
2016-07-12
|
[array(['Giard', 'Pascal', ''], dtype=object)
array(['Sarkis', 'Gabi', ''], dtype=object)
array(['Thibeault', 'Claude', ''], dtype=object)
array(['Gross', 'Warren J.', ''], dtype=object)]
|
17,677 |
1506.04164
|
Babak Vakili
|
V. Hosseinzadeh, M. A. Gorji, K. Nozari and B. Vakili
|
Noncommutative spaces and covariant formulation of statistical mechanics
|
12 two column pages, 2 figures, Final version
|
Phys. Rev. D 92 (2015) 025008
|
10.1103/PhysRevD.92.025008
| null |
gr-qc cond-mat.stat-mech hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study the statistical mechanics of a general Hamiltonian system in the
context of symplectic structure of the corresponding phase space. This
covariant formalism reveals some interesting correspondences between properties
of the phase space and the associated statistical physics. While topology, as a
global property, turns out to be related to the total number of microstates,
the invariant measure which assigns {\it a priori} probability distribution
over the microstates, is determined by the local form of the symplectic
structure. As an example of a model for which the phase space has a nontrivial
topology, we apply our formulation on the Snyder noncommutative space-time with
de Sitter four-momentum space and analyze the results. Finally, in the
framework of such a setup, we examine our formalism by studying the
thermodynamical properties of a harmonic oscillator system.
|
[{'version': 'v1', 'created': 'Fri, 12 Jun 2015 20:14:33 GMT'}
{'version': 'v2', 'created': 'Thu, 9 Jul 2015 10:10:57 GMT'}]
|
2015-07-10
|
[array(['Hosseinzadeh', 'V.', ''], dtype=object)
array(['Gorji', 'M. A.', ''], dtype=object)
array(['Nozari', 'K.', ''], dtype=object)
array(['Vakili', 'B.', ''], dtype=object)]
|
17,678 |
1107.4193
|
Voica Radescu Dr.
|
V. Radescu (for the H1 and ZEUS Collaborations)
|
Hera Precision Measurements and Impact for LHC Predictions
|
4 pages, 6 figures, Moriond QCD 2011 proceedings
| null | null | null |
hep-ex hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A QCD fit analysis to the combined HERA inclusive deep inelastic cross
sections measured by the H1 and ZEUS collaborations for $e^\pm p$ scattering to
extract HERAPDF sets is presented. The results are used for predictions of $
p\bar{p}$ processes at Tevatron and $pp$ processes at the LHC. The QCD analysis
has been extended to include the combined HERA II measurements at high $Q^2$
resulting in the HERAPDF1.5 sets, with full estimation of uncertainties. The
precision of the new PDFs at high $x$ is considerably improved, particularly in
the valence sector. In addition, inclusion of the HERA jet data allows for a
precise determination of the strong coupling. Moreover, inclusion of the
preliminary combined HERA charm data provides constraints for the optimal value
of the charm mass used in QCD theory models which may account for some of the
differences among global PDF fits.
|
[{'version': 'v1', 'created': 'Thu, 21 Jul 2011 08:07:41 GMT'}]
|
2019-08-14
|
[array(['Radescu', 'V.', '', 'for the H1 and ZEUS Collaborations'],
dtype=object) ]
|
17,679 |
2001.04873
|
Evgeny Ivanov
|
E. Ivanov, O. Lechtenfeld, S. Fedoruk
|
Supersymmetric Calogero models from superfield gauging
|
8 pages, Talk given by E. Ivanov at International Bogolyubov
Conference "Problems of Theoretical and Mathematical Physics". September
9-13, 2019; Moscow-Dubna, Russia
| null |
10.1134/S1063779620040346
| null |
hep-th math-ph math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Using the superfield gauging procedure, we construct new ${\cal N}\,{=}\,2$
and ${\cal N}\,{=}\,4$ superfield systems that generalize Calogero models. In
the bosonic limit, these systems yield rational Calogero models and hyperbolic
Calogero-Sutherland models in the ${\cal N}\,{=}\,2$ case, and their ${\rm
U}(2)$ spin generalization in the ${\cal N}\,{=}\,4$ case.
|
[{'version': 'v1', 'created': 'Tue, 14 Jan 2020 16:27:19 GMT'}]
|
2020-10-28
|
[array(['Ivanov', 'E.', ''], dtype=object)
array(['Lechtenfeld', 'O.', ''], dtype=object)
array(['Fedoruk', 'S.', ''], dtype=object)]
|
17,680 |
2007.09464
|
Sowmya Kamath
|
Sowmya Kamath S and Karthik K
|
A Bag of Visual Words Model for Medical Image Retrieval
|
In the proceedings of the 7th International Engineering Symposium
(IES 2018), Kumamoto University, Kumamoto, Japan, Mar 7-9, 2018
| null | null | null |
cs.CV cs.IR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Medical Image Retrieval is a challenging field in Visual information
retrieval, due to the multi-dimensional and multi-modal context of the
underlying content. Traditional models often fail to take the intrinsic
characteristics of data into consideration, and have thus achieved limited
accuracy when applied to medical images. The Bag of Visual Words (BoVW) is a
technique that can be used to effectively represent intrinsic image features in
vector space, so that applications like image classification and similar-image
search can be optimized. In this paper, we present a MedIR approach based on
the BoVW model for content-based medical image retrieval. As medical images as
multi-dimensional, they exhibit underlying cluster and manifold information
which enhances semantic relevance and allows for label uniformity. Hence, the
BoVW features extracted for each image are used to train a supervised machine
learning classifier based on positive and negative training images, for
extending content based image retrieval. During experimental validation, the
proposed model performed very well, achieving a Mean Average Precision of
88.89% during top-3 image retrieval experiments.
|
[{'version': 'v1', 'created': 'Sat, 18 Jul 2020 16:21:30 GMT'}]
|
2020-07-21
|
[array(['S', 'Sowmya Kamath', ''], dtype=object)
array(['K', 'Karthik', ''], dtype=object)]
|
17,681 |
1907.03498
|
Tahsin Cagri Sisman Dr.
|
Metin Gurses, Tahsin Cagri Sisman, Bayram Tekin
|
Non-Einsteinian Black Holes in Generic 3D Gravity Theories
|
5 pages; v2: Clarifications added. Version to appear in PRD
|
Phys. Rev. D 100, 064053 (2019)
|
10.1103/PhysRevD.100.064053
| null |
hep-th gr-qc
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The Ba\~nados-Teitelboim-Zanelli (BTZ) black hole metric solves the
three-dimensional Einstein's theory with a negative cosmological constant as
well as all the generic higher derivative gravity theories based on the metric;
as such it is a universal solution. Here, we find, in all generic higher
derivative gravity theories, new universal non-Einsteinian solutions obtained
as Kerr-Schild type deformations of the BTZ black hole. Among these, the
deformed non-extremal BTZ black hole loses its event horizon while the deformed
extremal one remains intact as a black hole in any generic gravity theory.
|
[{'version': 'v1', 'created': 'Mon, 8 Jul 2019 10:48:59 GMT'}
{'version': 'v2', 'created': 'Thu, 12 Sep 2019 17:56:19 GMT'}]
|
2019-10-02
|
[array(['Gurses', 'Metin', ''], dtype=object)
array(['Sisman', 'Tahsin Cagri', ''], dtype=object)
array(['Tekin', 'Bayram', ''], dtype=object)]
|
17,682 |
2003.06224
|
Amir Mosavi Prof
|
Shahaboddin Shamshirband, Narjes Nabipour, Masoud Hadipoor, Alireza
Baghban, Amir Mosavi
|
Comparative analysis of machine learning models for Ammonia Capture of
Ionic Liquids
|
44 pages, 12 figures
| null | null | null |
cond-mat.soft cs.LG
|
http://creativecommons.org/licenses/by/4.0/
|
Industry uses various solvents in the processes of refrigeration and
ventilation. Among them, the Ionic liquids (ILs) as the relatively new
solvents, are known for their proven eco-friendly characteristics. In this
research, a comprehensive literature review was carried out to deliver an
insight into the ILs and the prediction models used for estimating the ammonia
solubility in ILs. Furthermore, a number of advanced machine learning methods,
i.e. multilayer perceptron (MLP) and a combination of particle swarm
optimization (PSO) and adaptive neuro-fuzzy inference system (ANFIS) models are
used to estimate the solubility of ammonia in various ionic liquids. Affecting
parameters were molecular weight, critical temperature and pressure of ILs.
Furthermore, the salability is also predicted using the two-equation of states.
Down the line, some comparisons were drawn between experimental and modeling
results which is rarely done. The study shows that the equations of states are
not able estimate the solubility of ammonia accurately, by contrast, artificial
intelligence methods have produced promising results.
|
[{'version': 'v1', 'created': 'Wed, 19 Feb 2020 23:50:41 GMT'}]
|
2020-03-16
|
[array(['Shamshirband', 'Shahaboddin', ''], dtype=object)
array(['Nabipour', 'Narjes', ''], dtype=object)
array(['Hadipoor', 'Masoud', ''], dtype=object)
array(['Baghban', 'Alireza', ''], dtype=object)
array(['Mosavi', 'Amir', ''], dtype=object)]
|
17,683 |
math/0109128
|
Linus Kramer
|
Linus Kramer
|
Loop groups and twin buildings
|
Dedicated to John Stallings on the occasion of his 65th birthday. To
appear in Geometriae Dedicata
| null | null | null |
math.GT math.AT
| null |
We describe some buildings related to complex Kac-Moody groups. First we
describe the spherical building of SLn(C) (i.e. the projective geometry PG(Cn))
and its Veronese representation. Next we recall the construction of the affine
building associated to a discrete valuation on the rational function field
$C(z)$. Then we describe the same building in terms of complex Laurent
polynomials, and introduce the Veronese representation, which is an equivariant
embedding of the building into an affine Kac-Moody algebra. Next, we introduce
topological twin buildings. These buildings can be used for a proof - which is
a variant of the proof by Quillen and Mitchell - of Bott periodicity which uses
only topological geometry. At the end we indicate very briefly that the whole
process works also for affine real almost split Kac-Moody groups.
|
[{'version': 'v1', 'created': 'Wed, 19 Sep 2001 10:28:42 GMT'}]
|
2007-05-23
|
[array(['Kramer', 'Linus', ''], dtype=object)]
|
17,684 |
1910.02051
|
Zhou Mu
|
M. Zhou (1), X. Li (1), Y. Wang (1), A. Ren (1), X. Yang (1) ((1)
Chongqing University of Posts and Telecommunications)
|
WLAN Indoor Intrusion Detection Based on Deep Signal Feature Fusion and
Minimized-MKMMD Transfer Learning
| null | null | null | null |
eess.SP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Indoor intrusion detection technology has been widely utilized in network
security monitoring, smart city, entertainment games, and other fields. Most
existing indoor intrusion detection methods directly exploit the Received
Signal Strength (RSS) data collected by Monitor Points (MPs) and do not
consider the instability of WLAN signals in the complex indoor environments. In
response to this urgent problem, this paper proposes a novel WLAN indoor
intrusion detection method based on deep signal feature fusion and Minimized
Multiple Kernel Maximum Mean Discrepancy (Minimized-MKMMD). Firstly, the
multi-branch deep convolutional neural network is used to conduct the
dimensionality reduction and feature fusion of the RSS data, and the tags are
obtained according to the features of the offline and online RSS fusion
features that are corresponding to the silence and intrusion states, and then
based on this, the source domain and target domain are constructed
respectively. Secondly, the optimal transfer matrix is constructed by
minimizing MKMMD. Thirdly, the transferred RSS data in the source domain is
utilized for training the classifiers that are applying in getting the
classification of the RSS fusion features in the target domain in the same
shared subspace. Finally, the intrusion detection of the target environment is
realized by iteratively updating the process above until the algorithm
converges. The experimental results show that the proposed method can
effectively improve the accuracy and robustness of the intrusion detection
system.
|
[{'version': 'v1', 'created': 'Wed, 2 Oct 2019 13:01:09 GMT'}]
|
2019-10-07
|
[array(['Zhou', 'M.', ''], dtype=object)
array(['Li', 'X.', ''], dtype=object)
array(['Wang', 'Y.', ''], dtype=object)
array(['Ren', 'A.', ''], dtype=object)
array(['Yang', 'X.', ''], dtype=object)]
|
17,685 |
1909.13836
|
Eugenio Megias
|
Eugenio Megias
|
Thermodynamics of AdS$_5$ black holes: holographic QCD and St\"uckelberg
model
|
8 pages, 1 figure. Talk given by E.Megias at the XXVIth International
Conference on Integrable Systems and Quantum symmetries (ISQS-26), Prague,
Czech Republic, 8-12 July, 2019
| null | null | null |
hep-th gr-qc hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We explore the thermodynamics of AdS$_5$ black holes in two models: i) an
improved holographic QCD model with a simple dilaton potential, and ii) the
St\"uckelberg model in 5D. In the former case, by applying techniques of
singular perturbation theory, we obtain a resummation of the naive expansion at
high temperatures, providing a good fit to the lattice data for the trace
anomaly. In the latter, we find a solution of the equations of motion by
considering an expansion in the conformal dimension of the current associated
to the gauge field.
|
[{'version': 'v1', 'created': 'Mon, 30 Sep 2019 16:59:45 GMT'}]
|
2019-10-01
|
[array(['Megias', 'Eugenio', ''], dtype=object)]
|
17,686 |
2206.03968
|
David G\'omez-Castro
|
Jos\'e A. Carrillo and David G\'omez-Castro
|
Interpreting systems of continuity equations in spaces of probability
measures through PDE duality
| null | null | null | null |
math.AP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We introduce a notion of duality solution for a single or a system of
transport equations in spaces of probability measures reminiscent of the
viscosity solution notion for nonlinear parabolic equations. Our notion of
solution by duality is, under suitable assumptions, equivalent to gradient flow
solutions in case the single/system of equations has this structure. In
contrast, we can deal with a quite general system of nonlinear nonlocal,
diffusive or not, system of PDEs without any variational structure.
|
[{'version': 'v1', 'created': 'Wed, 8 Jun 2022 15:32:02 GMT'}]
|
2022-06-09
|
[array(['Carrillo', 'José A.', ''], dtype=object)
array(['Gómez-Castro', 'David', ''], dtype=object)]
|
17,687 |
1505.02425
|
Michael Heilman
|
Michael Heilman, Kenji Sagae
|
Fast Rhetorical Structure Theory Discourse Parsing
| null | null | null | null |
cs.CL
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In recent years, There has been a variety of research on discourse parsing,
particularly RST discourse parsing. Most of the recent work on RST parsing has
focused on implementing new types of features or learning algorithms in order
to improve accuracy, with relatively little focus on efficiency, robustness, or
practical use. Also, most implementations are not widely available. Here, we
describe an RST segmentation and parsing system that adapts models and feature
sets from various previous work, as described below. Its accuracy is near
state-of-the-art, and it was developed to be fast, robust, and practical. For
example, it can process short documents such as news articles or essays in less
than a second.
|
[{'version': 'v1', 'created': 'Sun, 10 May 2015 19:26:31 GMT'}]
|
2015-05-12
|
[array(['Heilman', 'Michael', ''], dtype=object)
array(['Sagae', 'Kenji', ''], dtype=object)]
|
17,688 |
math/0608255
|
H. W. Broer
|
H. W. Broer, H. Han{\ss}mann, J. Hoo, V. Naudot
|
Nearly-integrable perturbations of the Lagrange top: applications of
KAM-theory
|
Published at http://dx.doi.org/10.1214/074921706000000301 in the IMS
Lecture Notes--Monograph Series
(http://www.imstat.org/publications/lecnotes.htm) by the Institute of
Mathematical Statistics (http://www.imstat.org)
|
IMS Lecture Notes--Monograph Series 2006, Vol. 48, 286-303
|
10.1214/074921706000000301
|
IMS-LNMS48-LNMS4827
|
math.DS
| null |
Motivated by the Lagrange top coupled to an oscillator, we consider the
quasi-periodic Hamiltonian Hopf bifurcation. To this end, we develop the normal
linear stability theory of an invariant torus with a generic (i.e.,
non-semisimple) normal $1:-1$ resonance. This theory guarantees the persistence
of the invariant torus in the Diophantine case and makes possible a further
quasi-periodic normal form, necessary for investigation of the non-linear
dynamics. As a consequence, we find Cantor families of invariant isotropic tori
of all dimensions suggested by the integrable approximation.
|
[{'version': 'v1', 'created': 'Thu, 10 Aug 2006 12:43:54 GMT'}]
|
2007-05-23
|
[array(['Broer', 'H. W.', ''], dtype=object)
array(['Hanßmann', 'H.', ''], dtype=object)
array(['Hoo', 'J.', ''], dtype=object)
array(['Naudot', 'V.', ''], dtype=object)]
|
17,689 |
2009.03646
|
Maike Hohberg
|
Maike Hohberg, Francesco Donat, Giampiero Marra and Thomas Kneib
|
Beyond unidimensional poverty analysis using distributional copula
models for mixed ordered-continuous outcomes
| null | null | null | null |
stat.ME stat.AP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Poverty is a multidimensional concept often comprising a monetary outcome and
other welfare dimensions such as education, subjective well-being or health,
that are measured on an ordinal scale. In applied research, multidimensional
poverty is ubiquitously assessed by studying each poverty dimension
independently in univariate regression models or by combining several poverty
dimensions into a scalar index. This inhibits a thorough analysis of the
potentially varying interdependence between the poverty dimensions. We propose
a multivariate copula generalized additive model for location, scale and shape
(copula GAMLSS or distributional copula model) to tackle this challenge. By
relating the copula parameter to covariates, we specifically examine if certain
factors determine the dependence between poverty dimensions. Furthermore,
specifying the full conditional bivariate distribution, allows us to derive
several features such as poverty risks and dependence measures coherently from
one model for different individuals. We demonstrate the approach by studying
two important poverty dimensions: income and education. Since the level of
education is measured on an ordinal scale while income is continuous, we extend
the bivariate copula GAMLSS to the case of mixed ordered-continuous outcomes.
The new model is integrated into the GJRM package in R and applied to data from
Indonesia. Particular emphasis is given to the spatial variation of the
income-education dependence and groups of individuals at risk of being
simultaneously poor in both education and income dimensions.
|
[{'version': 'v1', 'created': 'Tue, 8 Sep 2020 11:31:59 GMT'}]
|
2020-09-09
|
[array(['Hohberg', 'Maike', ''], dtype=object)
array(['Donat', 'Francesco', ''], dtype=object)
array(['Marra', 'Giampiero', ''], dtype=object)
array(['Kneib', 'Thomas', ''], dtype=object)]
|
17,690 |
0706.0062
|
Ashton Bradley
|
A. S. Bradley and M. K. Olsen and S. A. Haine and J. J. Hope
|
Teleportation of massive particles without shared entanglement
|
4 pages, 3 figures
| null | null | null |
quant-ph cond-mat.other physics.atom-ph
| null |
We propose a method for quantum state transfer from one atom laser beam to
another via an intermediate optical field, using Raman incoupling and
outcoupling techniques. Our proposal utilises existing experimental
technologies to teleport macroscopic matter waves over potentially large
distances without shared entanglement.
|
[{'version': 'v1', 'created': 'Fri, 1 Jun 2007 04:59:15 GMT'}]
|
2007-06-13
|
[array(['Bradley', 'A. S.', ''], dtype=object)
array(['Olsen', 'M. K.', ''], dtype=object)
array(['Haine', 'S. A.', ''], dtype=object)
array(['Hope', 'J. J.', ''], dtype=object)]
|
17,691 |
hep-ph/0202039
|
Sychoi
|
S.Y. Choi (Chonbuk National University, Korea), J. Kalinowski (Warsaw
University), G. Moortgat--Pick (DESY) and P.M. Zerwas (DESY)
|
Analysis of the Neutralino System in Supersymmetric Theories -- Addendum
--
|
9 pages, 3 eps figures
| null | null |
DESY 02-020, IFT-02/03
|
hep-ph hep-ex
| null |
In the preceding reference [CKMZ] we have shown how the fundamental gaugino
and higgsino parameters of the chargino and neutralino system in supersymmetric
theories can be determined in high--precision experiments at $e^+e^-$ linear
colliders. Within the Minimal Supersymmetric Standard Model these parameters
can be reconstructed completely even if only the light charginos
$\tilde{\chi}^\pm_1$ and the light neutralinos $\tilde{\chi}^0_1$ and
$\tilde{\chi}^0_2$ are kinematically accessible in the initial phase of these
machines, as demonstrated in this Addendum.
|
[{'version': 'v1', 'created': 'Tue, 5 Feb 2002 16:15:14 GMT'}]
|
2007-05-23
|
[array(['Choi', 'S. Y.', '', 'Chonbuk National University, Korea'],
dtype=object)
array(['Kalinowski', 'J.', '', 'Warsaw\n University'], dtype=object)
array(['Moortgat--Pick', 'G.', '', 'DESY'], dtype=object)
array(['Zerwas', 'P. M.', '', 'DESY'], dtype=object)]
|
17,692 |
1003.4495
|
Gunnar Floystad
|
Gunnar Floystad, Juergen Herzog
|
Gr\"obner bases of syzygies and Stanley depth
|
13 pages
|
Journal of Algebra, 328 (2011), p.178-189
|
10.1016/j.jalgebra.2010.10.032
| null |
math.AC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Let F. be a any free resolution of a Z^n-graded submodule of a free module
over the polynomial ring K[x_1, ..., x_n]. We show that for a suitable term
order on F., the initial module of the p'th syzygy module Z_p is generated by
terms m_ie_i where the m_i are monomials in K[x_{p+1}, ..., x_n]. Also for a
large class of free resolutions F., encompassing Eliahou-Kervaire resolutions,
we show that a Gr\"obner basis for Z_p is given by the boundaries of generators
of F_p. We apply the above to give lower bounds for the Stanley depth of the
syzygy modules Z_p, in particular showing it is at least p+1. We also show that
if I is any squarefree ideal in K[x_1, ..., x_n], the Stanley depth of I is at
least of order the square root of 2n.
|
[{'version': 'v1', 'created': 'Tue, 23 Mar 2010 19:23:05 GMT'}]
|
2016-09-30
|
[array(['Floystad', 'Gunnar', ''], dtype=object)
array(['Herzog', 'Juergen', ''], dtype=object)]
|
17,693 |
1804.01256
|
Thomas Guyet
|
Thomas Guyet (LACODAM), Ren\'e Quiniou (LACODAM)
|
NegPSpan: efficient extraction of negative sequential patterns with
embedding constraints
| null | null | null | null |
cs.DB cs.AI cs.DS stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Mining frequent sequential patterns consists in extracting recurrent
behaviors, modeled as patterns, in a big sequence dataset. Such patterns inform
about which events are frequently observed in sequences, i.e. what does really
happen. Sometimes, knowing that some specific event does not happen is more
informative than extracting a lot of observed events. Negative sequential
patterns (NSP) formulate recurrent behaviors by patterns containing both
observed events and absent events. Few approaches have been proposed to mine
such NSPs. In addition, the syntax and semantics of NSPs differ in the
different methods which makes it difficult to compare them. This article
provides a unified framework for the formulation of the syntax and the
semantics of NSPs. Then, we introduce a new algorithm, NegPSpan, that extracts
NSPs using a PrefixSpan depth-first scheme and enabling maxgap constraints that
other approaches do not take into account. The formal framework allows for
highlighting the differences between the proposed approach wrt to the methods
from the literature, especially wrt the state of the art approach eNSP.
Intensive experiments on synthetic and real datasets show that NegPSpan can
extract meaningful NSPs and that it can process bigger datasets than eNSP
thanks to significantly lower memory requirements and better computation times.
|
[{'version': 'v1', 'created': 'Wed, 4 Apr 2018 06:47:32 GMT'}
{'version': 'v2', 'created': 'Wed, 25 Jul 2018 13:42:47 GMT'}]
|
2018-07-26
|
[array(['Guyet', 'Thomas', '', 'LACODAM'], dtype=object)
array(['Quiniou', 'René', '', 'LACODAM'], dtype=object)]
|
17,694 |
cond-mat/0306568
|
Inanc Adagideli
|
I. Adagideli
|
Ehrenfest time dependent suppression of weak localization
|
3 Pages, 1 Figure, RevTeX
|
Phys. Rev. B 68, 233308 (2003)
|
10.1103/PhysRevB.68.233308
| null |
cond-mat.mes-hall
| null |
The Ehrenfest time dependence of the suppression of the weak localization
correction to the conductance of a {\em clean} chaotic cavity is calculated.
Unlike in earlier work, no impurity scattering is invoked to imitate
diffraction effects. The calculation extends the semiclassical theory of K.
Richter and M. Sieber [Phys. Rev. Lett. {\bf 89}, 206801 (2002)] to include the
effect of a finite Ehrenfest time.
|
[{'version': 'v1', 'created': 'Mon, 23 Jun 2003 13:09:11 GMT'}]
|
2007-05-23
|
[array(['Adagideli', 'I.', ''], dtype=object)]
|
17,695 |
1612.07195
|
J\"urgen Koslowski
|
Julian Nagele and Bertram Felgenhauer and Harald Zankl
|
Certifying Confluence Proofs via Relative Termination and Rule Labeling
| null |
Logical Methods in Computer Science, Volume 13, Issue 2 (May 11,
2017) lmcs:3654
|
10.23638/LMCS-13(2:4)2017
| null |
cs.LO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The rule labeling heuristic aims to establish confluence of (left-)linear
term rewrite systems via decreasing diagrams. We present a formalization of a
confluence criterion based on the interplay of relative termination and the
rule labeling in the theorem prover Isabelle. Moreover, we report on the
integration of this result into the certifier CeTA, facilitating the checking
of confluence certificates based on decreasing diagrams. The power of the
method is illustrated by an experimental evaluation on a (standard) collection
of confluence problems.
|
[{'version': 'v1', 'created': 'Wed, 21 Dec 2016 15:41:32 GMT'}
{'version': 'v2', 'created': 'Wed, 10 May 2017 09:42:11 GMT'}]
|
2020-05-13
|
[array(['Nagele', 'Julian', ''], dtype=object)
array(['Felgenhauer', 'Bertram', ''], dtype=object)
array(['Zankl', 'Harald', ''], dtype=object)]
|
17,696 |
cond-mat/9401069
|
Raphael Blumenfeld
|
Raphael Blumenfeld (CNLS, Los Alamos Nat'l Lab., Los Alamos, NM)
|
Towards a theory of growing surfaces: Mapping two-dimensional Laplacian
growth onto Hamiltonian dynamics and statistics
|
17 pages, tex, 1 postscript figure not included (available upon
request), (This version has less than 80 characters per line)
| null | null |
LA-UR-93-3591
|
cond-mat nlin.PS patt-sol
| null |
I show that the evolution of a two dimensional surface in a Laplacian field
can be described by Hamiltonian dynamics. First the growing region is mapped
conformally to the interior of the unit circle, creating in the process a set
of mathematical zeros and poles that evolve dynamically as the surface grows.
Then the dynamics of these quasi-particles is analysed. A class of arbitrary
initial conditions is discussed explicitly, where the surface-tension-free
Laplacian growth process is integrable. This formulation holds only as long as
the singularities of the map are confined to within the unit circle. But the
Hamiltonian structure further allows for surface tension to be introduced as an
energetic term that effects repulsion between the quasi-particles and the
surface. These results are used to formulate a first-principles statistical
theory of pattern formation in stochastic growth, where noise is a key player.
|
[{'version': 'v1', 'created': 'Fri, 28 Jan 1994 20:36:41 GMT'}
{'version': 'v2', 'created': 'Mon, 31 Jan 1994 20:08:13 GMT'}]
|
2008-02-03
|
[array(['Blumenfeld', 'Raphael', '',
"CNLS, Los Alamos Nat'l Lab., Los Alamos, NM"], dtype=object)]
|
17,697 |
1203.1279
|
Alessandro Paggi
|
Alessandro Paggi, Junfeng Wang, Giuseppina Fabbiano, Martin Elvis and
Margarita Karovska
|
CHEERS results on Mrk 573: Study of deep Chandra observations
|
38 pages, 15 figures, 8 tables, accepted for publication on ApJ
| null |
10.1088/0004-637X/756/1/39
| null |
astro-ph.HE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present results on Mrk 573 obtained as part of the CHandra survey of
Extended Emission-line Regions in nearby Seyfert galaxies (CHEERS). Previous
studies showed that this source features a biconical emission in the soft X-ray
band closely related with the Narrow Line Region as mapped by the [O iii]
emission line and the radio emission, though on a smaller scale; we investigate
the properties of soft X-ray emission from this source with new deep Chandra
observations. Making use of the subpixel resolution of the Chandra/ACIS image
and PSF-deconvolution, we resolve and study substructures in each ionizing
cone. The two cone spectra are fitted with photoionization model, showing a
mildly photoionized phase diffused over the bicone. Thermal collisional gas at
about ~ 1.1 keV and ~ 0.8 keV appears to be located between the nucleus and the
"knots" resolved in radio observations, and between the "arcs" resolved in the
optical images, respectively; this can be interpreted in terms of shock
interaction with the host galactic plane. The nucleus shows a significant flux
decrease across the observations indicating variability of the AGN, with the
nuclear region featuring higher ionization parameter with respect to the bicone
region. The long exposure allows us to find extended emission up to ~ 7 kpc
from the nucleus along the bicone axis. Significant emission is also detected
in the direction perpendicular to the ionizing cones, disagreeing with the
fully obscuring torus prescribed in the AGN unified model, and suggesting
instead the presence of a clumpy structure.
|
[{'version': 'v1', 'created': 'Tue, 6 Mar 2012 18:56:45 GMT'}
{'version': 'v2', 'created': 'Mon, 25 Jun 2012 23:34:26 GMT'}
{'version': 'v3', 'created': 'Wed, 27 Jun 2012 13:24:39 GMT'}
{'version': 'v4', 'created': 'Tue, 24 Jul 2012 16:21:29 GMT'}]
|
2015-06-04
|
[array(['Paggi', 'Alessandro', ''], dtype=object)
array(['Wang', 'Junfeng', ''], dtype=object)
array(['Fabbiano', 'Giuseppina', ''], dtype=object)
array(['Elvis', 'Martin', ''], dtype=object)
array(['Karovska', 'Margarita', ''], dtype=object)]
|
17,698 |
1910.13570
|
Bradley Rava
|
Gareth M. James, Peter Radchenko and Bradley Rava
|
Irrational Exuberance: Correcting Bias in Probability Estimates
| null | null |
10.1080/01621459.2020.1787175
| null |
stat.ME
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider the common setting where one observes probability estimates for a
large number of events, such as default risks for numerous bonds.
Unfortunately, even with unbiased estimates, selecting events corresponding to
the most extreme probabilities can result in systematically underestimating the
true level of uncertainty. We develop an empirical Bayes approach "Excess
Certainty Adjusted Probabilities" (ECAP), using a variant of Tweedie's formula,
which updates probability estimates to correct for selection bias. ECAP is a
flexible non-parametric method, which directly estimates the score function
associated with the probability estimates, so it does not need to make any
restrictive assumptions about the prior on the true probabilities. ECAP also
works well in settings where the probability estimates are biased. We
demonstrate through theoretical results, simulations, and an analysis of two
real world data sets, that ECAP can provide significant improvements over the
original probability estimates.
|
[{'version': 'v1', 'created': 'Tue, 29 Oct 2019 22:59:31 GMT'}
{'version': 'v2', 'created': 'Thu, 26 Mar 2020 19:13:25 GMT'}
{'version': 'v3', 'created': 'Mon, 30 Mar 2020 00:40:58 GMT'}]
|
2021-10-14
|
[array(['James', 'Gareth M.', ''], dtype=object)
array(['Radchenko', 'Peter', ''], dtype=object)
array(['Rava', 'Bradley', ''], dtype=object)]
|
17,699 |
1404.1433
|
Gang Wang
|
STAR Collaboration: L. Adamczyk, J. K. Adkins, G. Agakishiev, M. M.
Aggarwal, Z. Ahammed, I. Alekseev, J. Alford, C. D. Anson, A. Aparin, D.
Arkhipkin, E. C. Aschenauer, G. S. Averichev, A. Banerjee, D. R. Beavis, R.
Bellwied, A. Bhasin, A. K. Bhati, P. Bhattarai, H. Bichsel, J. Bielcik, J.
Bielcikova, L. C. Bland, I. G. Bordyuzhin, W. Borowski, J. Bouchet, A. V.
Brandin, S. G. Brovko, S. B\"ultmann, I. Bunzarov, T. P. Burton, J.
Butterworth, H. Caines, M. Calder\'on de la Barca S\'anchez, D. Cebra, R.
Cendejas, M. C. Cervantes, P. Chaloupka, Z. Chang, S. Chattopadhyay, H. F.
Chen, J. H. Chen, L. Chen, J. Cheng, M. Cherney, A. Chikanian, W. Christie,
J. Chwastowski, M. J. M. Codrington, G. Contin, J. G. Cramer, H. J. Crawford,
X. Cui, S. Das, A. Davila Leyva, L. C. De Silva, R. R. Debbe, T. G. Dedovich,
J. Deng, A. A. Derevschikov, R. Derradi de Souza, S. Dhamija, B. di Ruzza, L.
Didenko, C. Dilks, F. Ding, P. Djawotho, X. Dong, J. L. Drachenberg, J. E.
Draper, C. M. Du, L. E. Dunkelberger, J. C. Dunlop, L. G. Efimov, J.
Engelage, K. S. Engle, G. Eppley, L. Eun, O. Evdokimov, O. Eyser, R. Fatemi,
S. Fazio, J. Fedorisin, P. Filip, E. Finch, Y. Fisyak, C. E. Flores, C. A.
Gagliardi, D. R. Gangadharan, D. Garand, F. Geurts, A. Gibson, M. Girard, S.
Gliske, L. Greiner, D. Grosnick, D. S. Gunarathne, Y. Guo, A. Gupta, S.
Gupta, W. Guryn, B. Haag, A. Hamed, L-X. Han, R. Haque, J. W. Harris, S.
Heppelmann, A. Hirsch, G. W. Hoffmann, D. J. Hofman, S. Horvat, B. Huang, H.
Z. Huang, X. Huang, P. Huck, T. J. Humanic, G. Igo, W. W. Jacobs, H. Jang, E.
G. Judd, S. Kabana, D. Kalinkin, K. Kang, K. Kauder, H. W. Ke, D. Keane, A.
Kechechyan, A. Kesich, Z. H. Khan, D. P. Kikola, I. Kisel, A. Kisiel, D. D.
Koetke, T. Kollegger, J. Konzer, I. Koralt, L. K. Kosarzewski, L. Kotchenda,
A. F. Kraishan, P. Kravtsov, K. Krueger, I. Kulakov, L. Kumar, R. A. Kycia,
M. A. C. Lamont, J. M. Landgraf, K. D. Landry, J. Lauret, A. Lebedev, R.
Lednicky, J. H. Lee, M. J. LeVine, C. Li, W. Li, X. Li, X. Li, Y. Li, Z. M.
Li, M. A. Lisa, F. Liu, T. Ljubicic, W. J. Llope, M. Lomnitz, R. S. Longacre,
X. Luo, G. L. Ma, Y. G. Ma, D. M. M. D. Madagodagettige Don, D. P. Mahapatra,
R. Majka, S. Margetis, C. Markert, H. Masui, H. S. Matis, D. McDonald, T. S.
McShane, N. G. Minaev, S. Mioduszewski, B. Mohanty, M. M. Mondal, D. A.
Morozov, M. K. Mustafa, B. K. Nandi, Md. Nasim, T. K. Nayak, J. M. Nelson, G.
Nigmatkulov, L. V. Nogach, S. Y. Noh, J. Novak, S. B. Nurushev, G. Odyniec,
A. Ogawa, K. Oh, A. Ohlson, V. Okorokov, E. W. Oldag, D. L. Olvitt Jr., M.
Pachr, B. S. Page, S. K. Pal, Y. X. Pan, Y. Pandit, Y. Panebratsev, T.
Pawlak, B. Pawlik, H. Pei, C. Perkins, W. Peryt, P. Pile, M. Planinic, J.
Pluta, N. Poljak, K. Poniatowska, J. Porter, A. M. Poskanzer, N. K. Pruthi,
M. Przybycien, P. R. Pujahari, J. Putschke, H. Qiu, A. Quintero, S.
Ramachandran, R. Raniwala, S. Raniwala, R. L. Ray, C. K. Riley, H. G. Ritter,
J. B. Roberts, O. V. Rogachevskiy, J. L. Romero, J. F. Ross, A. Roy, L. Ruan,
J. Rusnak, O. Rusnakova, N. R. Sahoo, P. K. Sahu, I. Sakrejda, S. Salur, J.
Sandweiss, E. Sangaline, A. Sarkar, J. Schambach, R. P. Scharenberg, A. M.
Schmah, W. B. Schmidke, N. Schmitz, J. Seger, P. Seyboth, N. Shah, E.
Shahaliev, P. V. Shanmuganathan, M. Shao, B. Sharma, W. Q. Shen, S. S. Shi,
Q. Y. Shou, E. P. Sichtermann, R. N. Singaraju, M. J. Skoby, D. Smirnov, N.
Smirnov, D. Solanki, P. Sorensen, H. M. Spinka, B. Srivastava, T. D. S.
Stanislaus, J. R. Stevens, R. Stock, M. Strikhanov, B. Stringfellow, M.
Sumbera, X. Sun, X. M. Sun, Y. Sun, Z. Sun, B. Surrow, D. N. Svirida, T. J.
M. Symons, M. A. Szelezniak, J. Takahashi, A. H. Tang, Z. Tang, T. Tarnowsky,
J. H. Thomas, A. R. Timmins, D. Tlusty, M. Tokarev, S. Trentalange, R. E.
Tribble, P. Tribedy, B. A. Trzeciak, O. D. Tsai, J. Turnau, T. Ullrich, D. G.
Underwood, G. Van Buren, G. van Nieuwenhuizen, M. Vandenbroucke, J. A.
Vanfossen, Jr., R. Varma, G. M. S. Vasconcelos, A. N. Vasiliev, R. Vertesi,
F. Videb{\ae}k, Y. P. Viyogi, S. Vokal, A. Vossen, M. Wada, F. Wang, G. Wang,
H. Wang, J. S. Wang, X. L. Wang, Y. Wang, Y. Wang, G. Webb, J. C. Webb, G. D.
Westfall, H. Wieman, S. W. Wissink, R. Witt, Y. F. Wu, Z. Xiao, W. Xie, K.
Xin, H. Xu, J. Xu, N. Xu, Q. H. Xu, Y. Xu, Z. Xu, W. Yan, C. Yang, Y. Yang,
Y. Yang, Z. Ye, P. Yepes, L. Yi, K. Yip, I-K. Yoo, N. Yu, Y. Zawisza, H.
Zbroszczyk, W. Zha, J. B. Zhang, J. L. Zhang, S. Zhang, X. P. Zhang, Y.
Zhang, Z. P. Zhang, F. Zhao, J. Zhao, C. Zhong, X. Zhu, Y. H. Zhu, Y.
Zoulkarneeva, M. Zyzak
|
Beam-energy dependence of charge separation along the magnetic field in
Au+Au collisions at RHIC
|
6 pages, 4 figures, accepted by Phys. Rev. Lett (more model
comparisons have been added in version 2)
|
Phys. Rev. Lett. 113, 052302 (2014)
|
10.1103/PhysRevLett.113.052302
| null |
nucl-ex
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Local parity-odd domains are theorized to form inside a Quark-Gluon-Plasma
(QGP) which has been produced in high-energy heavy-ion collisions. The local
parity-odd domains manifest themselves as charge separation along the magnetic
field axis via the chiral magnetic effect (CME). The experimental observation
of charge separation has previously been reported for heavy-ion collisions at
the top RHIC energies. In this paper, we present the results of the beam-energy
dependence of the charge correlations in Au+Au collisions at midrapidity for
center-of-mass energies of 7.7, 11.5, 19.6, 27, 39 and 62.4 GeV from the STAR
experiment. After background subtraction, the signal gradually reduces with
decreased beam energy, and tends to vanish by 7.7 GeV. The implications of
these results for the CME will be discussed.
|
[{'version': 'v1', 'created': 'Sat, 5 Apr 2014 04:59:48 GMT'}
{'version': 'v2', 'created': 'Tue, 15 Jul 2014 21:20:19 GMT'}]
|
2014-08-06
|
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|
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