Unnamed: 0
int64 0
20k
| id
stringlengths 9
16
| submitter
stringlengths 1
50
⌀ | authors
stringlengths 5
15.2k
| title
stringlengths 7
294
| comments
stringlengths 1
682
⌀ | journal-ref
stringlengths 4
256
⌀ | doi
stringlengths 13
133
⌀ | report-no
stringlengths 2
187
⌀ | categories
stringlengths 5
90
| license
stringclasses 9
values | abstract
stringlengths 21
2.62k
| versions
stringlengths 62
2.35k
| update_date
stringlengths 10
10
| authors_parsed
stringlengths 39
44.4k
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
5,600 |
2307.02512
|
Hsin-Lun Li
|
Hsin-Lun Li
|
Application of the Deffuant model in money exchange
|
5 pages
| null | null | null |
q-fin.MF math.DS math.PR
|
http://creativecommons.org/licenses/by/4.0/
|
A money transfer involves a buyer and a seller. A buyer buys goods or
services from a seller. The money the buyer decreases is the same as that the
seller increases. At each time step, a pair of socially connected agents are
selected and transact in agreed money. We evolve the Deffuant model to a money
exchange system and study circumstances under which asymptotic stability holds,
or equal wealth can be achieved.
|
[{'version': 'v1', 'created': 'Wed, 5 Jul 2023 10:21:23 GMT'}]
|
2023-07-07
|
[array(['Li', 'Hsin-Lun', ''], dtype=object)]
|
5,601 |
astro-ph/9511034
|
Marc Kamionkowski
|
Ari Buchalter, Marc Kamionkowski, and R. Michael Rich
|
Rates for Color Shifted Microlensing Events
|
36 pages, uuencoded postscript file
|
Astrophys.J. 469 (1996) 676-690
|
10.1086/177814
|
CU-TP-715, CAL-583
|
astro-ph
| null |
If the objects responsible for gravitational microlensing (ML) of
Galactic-bulge stars are faint dwarfs, then blended light from the lens will
distort the shape of the ML light curve and shift the color of the observed
star during the event. The resolution in current surveys is not accurate enough
to observe this effect, but it should be detected with frequent and precise
followup observations. We calculate the expected rates for ML events where the
shape distortions will be observable by such followup observations, assuming
that the lenses are ordinary main-sequence stars in a bar and in the disk. We
study the dependence of the rates for color-shifted (CS) events on the
frequency of followup observations and on the precision of the photometry for a
variety of waveband pairings. We find that for hourly observations in $B$ and
$K$ with typical photometric errors of 0.01 mag, 28\% of the events where a
main-sequence bulge star is lensed, and 7\% of the events where the source is a
bulge giant, will give rise to a measurable CS at the 95\% confidence level.
For observations in $V$ and $I$, the fractions become 18\% and 5\%,
respectively, but may be increased to 40\% and 13\% by improved photometric
accuracy and increased sampling frequency. We outline how the mass, distance,
and transverse speed of the lens can be obtained, giving examples of typical
errors. We discuss how CS events can be distinguished from events where the
source is blended with a binary companion.
|
[{'version': 'v1', 'created': 'Wed, 8 Nov 1995 20:59:25 GMT'}]
|
2009-10-28
|
[array(['Buchalter', 'Ari', ''], dtype=object)
array(['Kamionkowski', 'Marc', ''], dtype=object)
array(['Rich', 'R. Michael', ''], dtype=object)]
|
5,602 |
2111.03022
|
Yerbol Palzhanov
|
Y. Wang, Y. Palzhanov, A. Quaini, M. Olshanskii, S. Majd
|
Lipid domain coarsening and fluidity in multicomponent lipid vesicles: A
continuum based model and its experimental validation
|
21 pages, 13 figures
| null | null | null |
cond-mat.soft cs.NA math.NA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Liposomes that achieve a heterogeneous and spatially organized surface
through phase separation have been recognized to be a promising platform for
delivery purposes. However, their design and optimization through
experimentation can be expensive and time-consuming. To assist with the design
and reduce the associated cost, we propose a computational platform for
modeling membrane coarsening dynamics based on the principles of continuum
mechanics and thermodynamics. This model couples phase separation to lateral
flow and accounts for different membrane fluidity within the different phases,
which is known to affect the coarsening dynamics on lipid membranes. The
simulation results are in agreement with the experimental data in terms of
liquid ordered domains area fraction, total domains perimeter over time and
total number of domains over time for two different membrane compositions
(DOPC:DPPC with a 1:1 molar ratio with 15% Chol and DOPC:DPPC with a 1:2 molar
ratio with 25% Chol) that yield opposite and nearly inverse phase behavior.
This quantitative validation shows that the developed platform can be a
valuable tool in complementing experimental practice. Keywords: Multicomponent
Membranes; Membrane fluidity; Membrane Phase Separation; Computational
Modeling; Fluorescence Microscopy; Liposomes
|
[{'version': 'v1', 'created': 'Thu, 4 Nov 2021 17:29:22 GMT'}]
|
2021-11-05
|
[array(['Wang', 'Y.', ''], dtype=object)
array(['Palzhanov', 'Y.', ''], dtype=object)
array(['Quaini', 'A.', ''], dtype=object)
array(['Olshanskii', 'M.', ''], dtype=object)
array(['Majd', 'S.', ''], dtype=object)]
|
5,603 |
cond-mat/9812022
|
C. Stephen Hellberg
|
C. Stephen Hellberg (Naval Research Lab.) and Efstratios Manousakis
(Florida State Univ.)
|
Stripes and the t-J model
|
4 pages; 4 eps figures included in text; Revtex
| null |
10.1103/PhysRevLett.83.132
| null |
cond-mat.str-el cond-mat.supr-con
| null |
We investigate the two-dimensional t-J model at a hole doping of x = 1/8 and
J/t = 0.35 with exact diagonalization. The low-energy states are uniform (not
striped). We find numerous excited states with charge density wave structures,
which may be interpreted as striped phases. Some of these are consistent with
neutron scattering data on the cuprates and nickelates.
|
[{'version': 'v1', 'created': 'Tue, 1 Dec 1998 21:36:25 GMT'}]
|
2009-10-31
|
[array(['Hellberg', 'C. Stephen', '', 'Naval Research Lab.'], dtype=object)
array(['Manousakis', 'Efstratios', '', 'Florida State Univ.'],
dtype=object) ]
|
5,604 |
2207.09044
|
Mohammad Reza Yousefi
|
Aboozar Moradi, Mohammad Reza Yousefi
|
Effects of different tumors on the steady-state heat distribution in the
human eye using the 3D finite element method
|
15 pages, 6 Figures, 5 Tables
| null | null | null |
q-bio.TO
|
http://creativecommons.org/licenses/by/4.0/
|
In this paper, a three-dimensional finite element method is developed to
simulate the heat distribution in the human eye with different types of tumors
to understand the effect of tumors on heat distribution in the human eye. The
human eye is modeled as a composition of several homogeneous regions and the
physical and thermal properties of each region used in this study are more
accurate than the models used in previous studies. By considering the exact and
complicated geometry of all parts, the finite element method is a proper
solution for solving the heat equation inside the human eye. There are two
kinds of boundary conditions called the radiation condition and the Robin
condition. The radiation boundary condition is modeled as a Robin boundary
condition. For modeling eye tumors and their effect on heat distribution, we
need information about eye tumor properties such as heat conductivity, density,
specific heat, and so on. Thanks to no accurate reported information about eye
tumor properties, the properties of other types of tumors such as skin, and
bowel tumors are used. Simulation results with different parameters of eye
tumors show the effect of eye tumors on heat distribution in the human eye.
|
[{'version': 'v1', 'created': 'Tue, 19 Jul 2022 03:29:43 GMT'}]
|
2022-07-20
|
[array(['Moradi', 'Aboozar', ''], dtype=object)
array(['Yousefi', 'Mohammad Reza', ''], dtype=object)]
|
5,605 |
2111.03019
|
Zachary Goodwin
|
Christopher T. S. Cheung and Zachary A. H. Goodwin and Valerio Vitale
and Johannes Lischner and Arash A. Mostofi
|
Atomistic hartree theory and crystal field of twisted double bilayer
graphene near the magic angle
|
10 pages, 8 figures
| null | null | null |
cond-mat.mtrl-sci cond-mat.str-el
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Twisted double bilayer graphene (tDBLG) is a moir\'e material that has
recently generated significant interest because of the observation of
correlated phases near the magic angle. We carry out atomistic Hartree theory
calculations to study the role of electron-electron interactions in the normal
state. In contrast to twisted bilayer graphene (tBLG), we find that such
interactions do not result in significant doping-dependent deformations of the
electronic band structure. However, interactions play an important role for the
electronic structure in the presence of a perpendicular electric field as they
screen the external field. Finally, we analyze the contribution of the Hartree
potential to the crystal field, i.e. the on-site energy difference between the
inner and outer layers. We find that the on-site energy obtained from Hartree
theory has the same sign, but a smaller magnitude compared to previous studies
in which the on-site energy was determined by fitting tight-binding results to
ab initio density-functional theory (DFT) band structures. To understand this
quantitative difference, we analyze the ab initio Kohn-Sham potential obtained
from DFT and find that a subtle interplay of electron-electron and electron-ion
interactions determines the magnitude of the on-site potential.
|
[{'version': 'v1', 'created': 'Thu, 4 Nov 2021 17:22:47 GMT'}
{'version': 'v2', 'created': 'Mon, 10 Jan 2022 08:49:31 GMT'}
{'version': 'v3', 'created': 'Wed, 9 Mar 2022 10:09:43 GMT'}]
|
2022-03-10
|
[array(['Cheung', 'Christopher T. S.', ''], dtype=object)
array(['Goodwin', 'Zachary A. H.', ''], dtype=object)
array(['Vitale', 'Valerio', ''], dtype=object)
array(['Lischner', 'Johannes', ''], dtype=object)
array(['Mostofi', 'Arash A.', ''], dtype=object)]
|
5,606 |
2202.11436
|
Andrea Barbiero
|
Andrea Barbiero, Artur Tuktamyshev, Geoffrey Pirard, Jan Huwer, Tina
M\"uller, R. Mark Stevenson, Sergio Bietti, Stefano Vichi, Alexey Fedorov,
Gabriel Bester, Stefano Sanguinetti and Andrew J. Shields
|
Fine structure splitting analysis of cavity-enhanced telecom-wavelength
InAs quantum dots grown on a GaAs(111)A vicinal substrate
| null | null |
10.1103/PhysRevApplied.18.034081
| null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The effcient generation of entangled photons at telecom wavelength is crucial
for the success of many quantum communication protocols and the development of
fiber-based quantum networks. Entangled light can be generated by solid state
quantum emitters with naturally low fine structure splitting, such as highly
symmetric InAs quantum dots (QDs) grown on (111)-oriented surfaces.
Incorporating this kind of QDs into optical cavities is critical to achieve
sufficient signal intensitiesfor applications, but has so far shown major
complications. In this work we present droplet epitaxy of telecom-wavelength
InAs QDs within an optical cavity on a vicinal (2{\deg} miscut) GaAs(111)A
substrate. We show a remarkable enhancement of the photon extraction efficiency
compared to previous reports together with a reduction of the density that
facilitates the isolation of single spectral lines. Moreover, we characterise
the exciton fine structure splitting and employ numerical simulations under the
framework of the empirical pseudopotential and configuration interaction
methods to study the impact of the miscut on the optical properties of the QDs.
We demonstrate that the presence of miscut steps influences the polarisation of
the excitonic states and introduces a preferential orientation in the $C_{3v}$
symmetry of the surface.
|
[{'version': 'v1', 'created': 'Wed, 23 Feb 2022 11:28:52 GMT'}
{'version': 'v2', 'created': 'Fri, 30 Sep 2022 09:11:59 GMT'}]
|
2022-10-03
|
[array(['Barbiero', 'Andrea', ''], dtype=object)
array(['Tuktamyshev', 'Artur', ''], dtype=object)
array(['Pirard', 'Geoffrey', ''], dtype=object)
array(['Huwer', 'Jan', ''], dtype=object)
array(['Müller', 'Tina', ''], dtype=object)
array(['Stevenson', 'R. Mark', ''], dtype=object)
array(['Bietti', 'Sergio', ''], dtype=object)
array(['Vichi', 'Stefano', ''], dtype=object)
array(['Fedorov', 'Alexey', ''], dtype=object)
array(['Bester', 'Gabriel', ''], dtype=object)
array(['Sanguinetti', 'Stefano', ''], dtype=object)
array(['Shields', 'Andrew J.', ''], dtype=object)]
|
5,607 |
hep-ph/9309277
| null |
R. Arnowitt and Pran Nath
|
Supersymmetry and Supergravity: Phenomenology and Grand Unification
|
Latex file, 61 pages, 25 figures available upon request. Lectures by
first author at VII J. A. Swieca Summer School, Campos do Jordao, Brazil,
1993
| null | null |
CTP--TAMU--52/93, NUB--TH--3073-93 and SSCL--Preprint--503
|
hep-ph
| null |
A survey is given of supersymmetry and supergravity and their phenomenology.
Some of the topics discussed are the basic ideas of global supersymmetry, the
minimal supersymmetric Standard Model (MSSM) and its phenomenology, the basic
ideas of local supersymmetry (supergravity), grand unification, supersymmetry
breaking in supergravity grand unified models, radiative breaking of $SU(2)
\times U(1)$, proton decay, cosmological constraints, and predictions of
supergravity grand unified models. While the number of detailed derivations are
necessarily limited, a sufficient number of results are given so that a reader
can get a working knowledge of this field.
|
[{'version': 'v1', 'created': 'Thu, 16 Sep 1993 22:39:27 GMT'}]
|
2007-05-23
|
[array(['Arnowitt', 'R.', ''], dtype=object)
array(['Nath', 'Pran', ''], dtype=object)]
|
5,608 |
1910.03135
|
Ankur Handa
|
Ankur Handa, Karl Van Wyk, Wei Yang, Jacky Liang, Yu-Wei Chao, Qian
Wan, Stan Birchfield, Nathan Ratliff, Dieter Fox
|
DexPilot: Vision Based Teleoperation of Dexterous Robotic Hand-Arm
System
|
17 pages, first version of DexPilot
| null | null | null |
cs.CV cs.LG cs.RO
|
http://creativecommons.org/licenses/by/4.0/
|
Teleoperation offers the possibility of imparting robotic systems with
sophisticated reasoning skills, intuition, and creativity to perform tasks.
However, current teleoperation solutions for high degree-of-actuation (DoA),
multi-fingered robots are generally cost-prohibitive, while low-cost offerings
usually provide reduced degrees of control. Herein, a low-cost, vision based
teleoperation system, DexPilot, was developed that allows for complete control
over the full 23 DoA robotic system by merely observing the bare human hand.
DexPilot enables operators to carry out a variety of complex manipulation tasks
that go beyond simple pick-and-place operations. This allows for collection of
high dimensional, multi-modality, state-action data that can be leveraged in
the future to learn sensorimotor policies for challenging manipulation tasks.
The system performance was measured through speed and reliability metrics
across two human demonstrators on a variety of tasks. The videos of the
experiments can be found at https://sites.google.com/view/dex-pilot.
|
[{'version': 'v1', 'created': 'Mon, 7 Oct 2019 23:43:32 GMT'}
{'version': 'v2', 'created': 'Mon, 14 Oct 2019 20:58:22 GMT'}]
|
2019-10-16
|
[array(['Handa', 'Ankur', ''], dtype=object)
array(['Van Wyk', 'Karl', ''], dtype=object)
array(['Yang', 'Wei', ''], dtype=object)
array(['Liang', 'Jacky', ''], dtype=object)
array(['Chao', 'Yu-Wei', ''], dtype=object)
array(['Wan', 'Qian', ''], dtype=object)
array(['Birchfield', 'Stan', ''], dtype=object)
array(['Ratliff', 'Nathan', ''], dtype=object)
array(['Fox', 'Dieter', ''], dtype=object)]
|
5,609 |
2204.06609
|
Giulia De Pasquale
|
Giulia De Pasquale and Maria Elena Valcher
|
A Bandwagon Bias Based Model for Opinion Dynamics: Intertwining between
Homophily and Influence Mechanisms
|
Accepted for presentation at the European Control Conference 2022 and
selected for submission at the European Journal of Control
| null | null | null |
eess.SY cs.SY physics.soc-ph
|
http://creativecommons.org/licenses/by/4.0/
|
Recently a model for the interplay between homophily-based appraisal dynamics
and influence-based opinion dynamics has been proposed. The model explores for
the first time how the opinions of a group of agents on a certain number of
issues/topics is influenced by the agents' mutual appraisal and, conversely,
the agents' mutual appraisal is updated based on the agents' opinions on the
various issues, according to a homophily model. In this paper we show that a
simplified (and, in some situations, more feasible) version of the model, that
accounts only for the signs of the agents' appraisals rather than for their
numerical values, provides an equally accurate and effective model of the
opinion dynamics in small networks. The equilibria reached by this model
correspond, almost surely, to situations in which the agents' network is
complete and structurally balanced. On the other hand, we ensure that such
equlibria can always be reached in a finite number of steps, and, differently
from the original model, we rule out other types of equilibria that correspond
to disconnected social networks.
|
[{'version': 'v1', 'created': 'Wed, 13 Apr 2022 18:58:35 GMT'}]
|
2022-04-15
|
[array(['De Pasquale', 'Giulia', ''], dtype=object)
array(['Valcher', 'Maria Elena', ''], dtype=object)]
|
5,610 |
mtrl-th/9502002
|
Francesco Mauri
|
Francesco Mauri and Roberto Car
|
First-principle study of excitonic self-trapping in diamond
|
12 pages, RevTex file, 3 Postscript figures
| null |
10.1103/PhysRevLett.75.3166
| null |
mtrl-th cond-mat.mtrl-sci
| null |
We present a first-principles study of excitonic self-trapping in diamond.
Our calculation provides evidence for self-trapping of the 1s core exciton and
gives a coherent interpretation of recent experimental X-ray absorption and
emission data. Self-trapping does not occur in the case of a single valence
exciton. We predict, however, that self-trapping should occur in the case of a
valence biexciton. This process is accompanied by a large local relaxation of
the lattice which could be observed experimentally.
|
[{'version': 'v1', 'created': 'Sat, 4 Feb 1995 00:04:16 GMT'}]
|
2016-09-07
|
[array(['Mauri', 'Francesco', ''], dtype=object)
array(['Car', 'Roberto', ''], dtype=object)]
|
5,611 |
2104.14323
|
Nicolas Harrand
|
Nicolas Harrand, Thomas Durieux, David Broman, and Benoit Baudry
|
The Behavioral Diversity of Java JSON Libraries
| null |
The 32nd International Symposium on Software Reliability
Engineering (ISSRE 2021)
| null | null |
cs.SE
|
http://creativecommons.org/licenses/by-nc-sa/4.0/
|
JSON is an essential file and data format in do-mains that span scientific
computing, web APIs or configuration management. Its popularity has motivated
significant software development effort to build multiple libraries to process
JSON data. Previous studies focus on performance comparison among these
libraries and lack a software engineering perspective.We present the first
systematic analysis and comparison of the input / output behavior of 20 JSON
libraries, in a single software ecosystem: Java/Maven. We assess behavior
diversity by running each library against a curated set of 473 JSON files,
including both well-formed and ill-formed files. The main design differences,
which influence the behavior of the libraries, relate to the choice of data
structure to represent JSON objects and to the encoding of numbers. We observe
a remarkable behavioral diversity with ill-formed files, or corner cases such
as large numbers or duplicate data. Our unique behavioral assessment of JSON
libraries paves the way for a robust processing of ill-formed files, through a
multi-version architecture.
|
[{'version': 'v1', 'created': 'Thu, 29 Apr 2021 13:23:58 GMT'}
{'version': 'v2', 'created': 'Fri, 27 Aug 2021 08:52:46 GMT'}]
|
2021-08-30
|
[array(['Harrand', 'Nicolas', ''], dtype=object)
array(['Durieux', 'Thomas', ''], dtype=object)
array(['Broman', 'David', ''], dtype=object)
array(['Baudry', 'Benoit', ''], dtype=object)]
|
5,612 |
1512.08486
|
Yuan Liu
|
Yuan Liu, Jiming Sheng, Hao Wu, Qiyuan He, Hung-Chieh Cheng, Muhammad
Imran Shakir, Yu Huang and Xiangfeng Duan
|
High Current Density Vertical Tunneling Transistors from
Graphene/Highly-Doped Silicon Heterostructures
| null | null | null | null |
cond-mat.mtrl-sci cond-mat.mes-hall
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Graphene/silicon heterostructures have attracted tremendous interest as a new
platform for diverse electronic and photonic devices such as barristors, solar
cells, optical modulators, and chemical sensors. The studies to date largely
focus on junctions between graphene and lightly-doped silicon, where a Schottky
barrier is believed to dominate the carrier transport process. Here we report a
systematic investigation of carrier transport across the heterojunctions formed
between graphene and highly-doped silicon. By varying the silicon doping level
and the measurement temperature, we show that the carrier transport across the
graphene/p++-Si heterojunction is dominated by tunneling effect through the
native oxide. We further demonstrate that the tunneling current can be
effectively modulated by the external gate electrical field, resulting in a
vertical tunneling transistor. Benefited from the large density of states of
highly doped silicon, our tunneling transistors can deliver a current density
over 20 A/cm2, about two orders of magnitude higher than previous
graphene/insulator/graphene tunneling transistor at the same on/off ratio.
|
[{'version': 'v1', 'created': 'Mon, 28 Dec 2015 19:29:23 GMT'}]
|
2015-12-29
|
[array(['Liu', 'Yuan', ''], dtype=object)
array(['Sheng', 'Jiming', ''], dtype=object)
array(['Wu', 'Hao', ''], dtype=object)
array(['He', 'Qiyuan', ''], dtype=object)
array(['Cheng', 'Hung-Chieh', ''], dtype=object)
array(['Shakir', 'Muhammad Imran', ''], dtype=object)
array(['Huang', 'Yu', ''], dtype=object)
array(['Duan', 'Xiangfeng', ''], dtype=object)]
|
5,613 |
2305.04833
|
Bin Xiao
|
Bin Xiao, Murat Simsek, Burak Kantarci, Ala Abu Alkheir
|
Revisiting Table Detection Datasets for Visually Rich Documents
| null | null | null | null |
cs.IR cs.CV
|
http://creativecommons.org/licenses/by-nc-nd/4.0/
|
Table Detection has become a fundamental task for visually rich document
understanding with the surging number of electronic documents. There have been
some open datasets widely used in many studies. However, popular available
datasets have some inherent limitations, including the noisy and inconsistent
samples, and the limit number of training samples, and the limit number of
data-sources. These limitations make these datasets unreliable to evaluate the
model performance and cannot reflect the actual capacity of models.
Therefore, in this paper, we revisit some open datasets with high quality of
annotations, identify and clean the noise, and align the annotation definitions
of these datasets to merge a larger dataset, termed with Open-Tables. Moreover,
to enrich the data sources, we propose a new dataset, termed with ICT-TD, using
the PDF files of Information and communication technologies (ICT) commodities
which is a different domain containing unique samples that hardly appear in
open datasets. To ensure the label quality of the dataset, we annotated the
dataset manually following the guidance of a domain expert. The proposed
dataset has a larger intra-variance and smaller inter-variance, making it more
challenging and can be a sample of actual cases in the business context.
We built strong baselines using various state-of-the-art object detection
models and also built the baselines in the cross-domain setting. Our
experimental results show that the domain difference among existing open
datasets are small, even they have different data-sources. Our proposed
Open-tables and ICT-TD are more suitable for the cross domain setting, and can
provide more reliable evaluation for model because of their high quality and
consistent annotations.
|
[{'version': 'v1', 'created': 'Thu, 4 May 2023 01:08:15 GMT'}]
|
2023-05-09
|
[array(['Xiao', 'Bin', ''], dtype=object)
array(['Simsek', 'Murat', ''], dtype=object)
array(['Kantarci', 'Burak', ''], dtype=object)
array(['Alkheir', 'Ala Abu', ''], dtype=object)]
|
5,614 |
astro-ph/0108207
|
H. C. Spruit
|
H.C. Spruit
|
Dynamo action by differential rotation in a stably stratified stellar
interior
|
Expanded version as accepted by Astron. Astrophys
| null |
10.1051/0004-6361:20011465
| null |
astro-ph
| null |
Magnetic fields can be created in stably stratified (non-convective) layers
in a differentially rotating star. A magnetic instability in the toroidal field
(wound up by differential rotation) replaces the role of convection in closing
the field amplification loop. Tayler instability is likely to be the most
relevant magnetic instability. A dynamo model is developed from these
ingredients, and applied to the problem of angular momentum transport in
stellar interiors. It produces a prodominantly horizontal field. This dynamo
process might account for the observed pattern of rotation in the solar core.
|
[{'version': 'v1', 'created': 'Sun, 12 Aug 2001 21:17:36 GMT'}
{'version': 'v2', 'created': 'Fri, 9 Nov 2001 12:51:15 GMT'}]
|
2009-11-07
|
[array(['Spruit', 'H. C.', ''], dtype=object)]
|
5,615 |
1705.01958
|
Filippo Miatto
|
Filippo M Miatto
|
Giant weak value amplification with chirped waveforms
| null | null | null | null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Weak value amplification is a classical phenomenon that can enhance the
sensitivity of a measurement through clever use of interference. The most
well-known paradigm of weak value amplification makes use of a Gaussian pulse,
which is typical of pulsed laser systems. In this Letter we show that chirped
pulses have a great advantage over Gaussians at detecting frequency shifts
thanks to the large phase space area that they cover. As an example, we show
that within the typical operative parameters of a radar, we can achieve two
orders of magnitude amplification of small frequency shifts \emph{on top of the
weak value amplification}. This idea could lead to new metrological avenues in
the microwave optics domain, and to Doppler radar technology with unprecedented
sensitivity.
|
[{'version': 'v1', 'created': 'Thu, 4 May 2017 18:11:07 GMT'}]
|
2017-05-08
|
[array(['Miatto', 'Filippo M', ''], dtype=object)]
|
5,616 |
cond-mat/0110066
|
Kaniadakis Giorgio
|
G. Kaniadakis, P. Quarati, and A.M. Scarfone
|
Kinetical Foundations of Non Conventional Statistics
|
11 pages, no figures. Contribution paper to the proseedings of the
International School and Workshop on Nonextensive Thermodynamics and Physical
Applications, NEXT 2001, 23-30 May 2001, Cagliari Sardinia, Italy (Physica A)
|
Physica A 305, 76 (2002)
|
10.1016/S0378-4371(01)00643-4
| null |
cond-mat.stat-mech cond-mat.soft
| null |
After considering the kinetical interaction principle (KIP) introduced in
ref. Physica A {\bf296}, 405 (2001), we study in the Boltzmann picture, the
evolution equation and the H-theorem for non extensive systems. The
$q$-kinetics and the $\kappa$-kinetics are studied in detail starting from the
most general non linear Boltzmann equation compatible with the KIP.
|
[{'version': 'v1', 'created': 'Wed, 3 Oct 2001 10:25:42 GMT'}]
|
2015-06-24
|
[array(['Kaniadakis', 'G.', ''], dtype=object)
array(['Quarati', 'P.', ''], dtype=object)
array(['Scarfone', 'A. M.', ''], dtype=object)]
|
5,617 |
1912.11461
|
Yuan Sun
|
Song He, Jia-Rui Sun, Yuan Sun
|
The correlation function of (1,1) and (2,2) supersymmetric theories with
$T\bar{T}$ deformation
|
43 pages, published version
| null |
10.1007/JHEP04(2020)100
| null |
hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In the paper, based on recent studies on $T\bar{T}$ deformation of 2D field
theory with supersymmetry, we investigate the deformed correlation functions in
$\mathcal{N}=(1,1)$ and $\mathcal{N}=(2,2)$ 2D superconformal field theories.
Up to the leading order in perturbation theory, we compute the correlation
functions under $T\bar{T}$ deformation. The correlation functions in these
undeformed theories are almost known, and together with the help of
superconformal Ward identity in $\mathcal{N}=(1,1)$ and $\mathcal{N}=(2,2)$
theories respectively we can obtain the correlation functions with operator
$T\bar{T}$ inserted. Finally, by employing dimensional regularization, we can
work out the integrals in the first order perturbation. The study in this paper
extends previous works on the correlation functions of $T\bar{T}$ deformed
bosonic CFT to the supersymmetric case.
|
[{'version': 'v1', 'created': 'Tue, 24 Dec 2019 18:33:29 GMT'}
{'version': 'v2', 'created': 'Mon, 27 Apr 2020 16:42:42 GMT'}]
|
2020-04-28
|
[array(['He', 'Song', ''], dtype=object)
array(['Sun', 'Jia-Rui', ''], dtype=object)
array(['Sun', 'Yuan', ''], dtype=object)]
|
5,618 |
2108.09936
|
Xiaogang Wang
|
Xiaogang Wang, Marcelo H Ang Jr and Gim Hee Lee
|
Voxel-based Network for Shape Completion by Leveraging Edge Generation
|
ICCV 2021
| null | null | null |
cs.CV cs.AI
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Deep learning technique has yielded significant improvements in point cloud
completion with the aim of completing missing object shapes from partial
inputs. However, most existing methods fail to recover realistic structures due
to over-smoothing of fine-grained details. In this paper, we develop a
voxel-based network for point cloud completion by leveraging edge generation
(VE-PCN). We first embed point clouds into regular voxel grids, and then
generate complete objects with the help of the hallucinated shape edges. This
decoupled architecture together with a multi-scale grid feature learning is
able to generate more realistic on-surface details. We evaluate our model on
the publicly available completion datasets and show that it outperforms
existing state-of-the-art approaches quantitatively and qualitatively. Our
source code is available at https://github.com/xiaogangw/VE-PCN.
|
[{'version': 'v1', 'created': 'Mon, 23 Aug 2021 05:10:29 GMT'}]
|
2021-08-24
|
[array(['Wang', 'Xiaogang', ''], dtype=object)
array(['Ang', 'Marcelo H', 'Jr'], dtype=object)
array(['Lee', 'Gim Hee', ''], dtype=object)]
|
5,619 |
1803.06809
|
Xue Mei Su
|
Miaodi Guo, Xuemei Su
|
Absorption interferometer based on phase modulation
|
6 pages, 5 figures
| null | null | null |
quant-ph physics.optics
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We propose a scheme in which an arbitrary incidence can be made perfectly
reflected/transmitted if a phase setup is adjusted under a specific condition.
We analyze the intracavity field variation as well as the output field with
changing closed-loop phase of atomic system and relative phase of input probe
beams. And we obtain the condition for perfect transmitter or reflector. By
adjusting two phase setups, the medium absorption and light interference can be
controlled so that photon escape from cavity can be modulated, thus the
intensity switching based on phase control can be realized. Then based on the
transmission/reflection analysis, total absorption of this system can be
investigated. Therefore our scheme can be used as an absorption interferometer
to explore the optical absorption in some complicated system. The phase delay
dependent on phi_1 or phi_2 in output light intensity can be applied in the
realization of quantum phase gate and subtle wave filter. And based on this
scheme, we implement the state transfer between perfect transmitter/reflector
and non-perfect coherent photon absorber via relative-phase modulation.
|
[{'version': 'v1', 'created': 'Mon, 19 Mar 2018 05:52:21 GMT'}]
|
2018-03-20
|
[array(['Guo', 'Miaodi', ''], dtype=object)
array(['Su', 'Xuemei', ''], dtype=object)]
|
5,620 |
1501.05688
|
Michael Schwemmer
|
Michael A. Schwemmer and Jay M. Newby
|
The Dynamics of Bistable Switching Behavior in Limit Cycle Systems with
Additive Noise
|
20 pages, 13 figures
| null | null | null |
nlin.CD
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Additive noise is known to produce counter-intuitive behaviors in nonlinear
dynamical systems. Previously, it was shown that systems with a deterministic
limit cycle can display bistable switching between metastable states in the
presence of asymmetric additive white noise. Here, we systematically analyze
the dynamics of this bistable behavior and show how the vector field away from
the limit cycle influences the rate and directionality of the bistable
switching. Using stochastic phase reduction methods, we identify mechanisms
underlying different rates of switching and predict when the system will rotate
in the opposite direction of the deterministic limit cycle. Thus, this work
presents an alternative mechanism for generating a range of bistable
switch-like behaviors that have been observed in a number of physical systems.
|
[{'version': 'v1', 'created': 'Fri, 23 Jan 2015 00:41:09 GMT'}]
|
2015-01-26
|
[array(['Schwemmer', 'Michael A.', ''], dtype=object)
array(['Newby', 'Jay M.', ''], dtype=object)]
|
5,621 |
1611.00729
|
Paul Plucinsky
|
Paul Plucinsky, Marius Lemm, and Kaushik Bhattacharya
|
Actuation of thin nematic elastomer sheets with controlled heterogeneity
|
54 pages
| null |
10.1007/s00205-017-1167-3
| null |
cond-mat.soft math.AP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Nematic elastomers and glasses deform spontaneously when subjected to
temperature changes. This property can be exploited in the design of
heterogeneously patterned thin sheets that deform into a non-trivial shape when
heated or cooled. In this paper, we start from a variational formulation for
the entropic elastic energy of liquid crystal elastomers and we derive an
effective two-dimensional metric constraint, which links the deformation and
the heterogeneous director field. Our main results show that satisfying the
metric constraint is both necessary and sufficient for the deformation to be an
approximate minimizer of the energy. We include several examples which show
that the class of deformations satisfying the metric constraint is quite rich.
|
[{'version': 'v1', 'created': 'Wed, 2 Nov 2016 19:09:22 GMT'}
{'version': 'v2', 'created': 'Thu, 16 Mar 2017 19:49:34 GMT'}
{'version': 'v3', 'created': 'Tue, 25 Apr 2017 16:17:53 GMT'}
{'version': 'v4', 'created': 'Sun, 23 Jul 2017 15:54:18 GMT'}]
|
2017-10-25
|
[array(['Plucinsky', 'Paul', ''], dtype=object)
array(['Lemm', 'Marius', ''], dtype=object)
array(['Bhattacharya', 'Kaushik', ''], dtype=object)]
|
5,622 |
astro-ph/0201453
|
Andreas Korn
|
A.J. Korn (Uni-Sternwarte Munich (USM), Germany), S.C. Keller (UCLLNL,
USA), A. Kaufer (ESO, Chile), N. Langer (U of Utrecht, The Netherlands), N.
Przybilla (USM, Germany), O. Stahl & B. Wolf (Landessternwarte Heidelberg,
Germany)
|
Pristine CNO abundances from Magellanic Cloud B stars I. The LMC cluster
NGC 2004 with UVES
|
9 pages, 4 figures, accepted by A&A
| null |
10.1051/0004-6361:20020116
| null |
astro-ph
| null |
We present chemical abundances for four main sequence B stars in the young
cluster NGC 2004 in the Large Magellanic Cloud (LMC). Apart from H II regions,
unevolved OB-type stars are currently the only accessible source of present-day
CNO abundances for the MCs not altered by stellar evolution. Using UVES on the
VLT, we obtained spectra of sufficient resolution (R = 20 000) and
signal-to-noise (S/N > 100) to derive abundances for a variety of elements (He,
C, N, O, Mg and Si) with NLTE line formation.
This study doubles the number of main sequence B stars in the LMC with
detailed chemical abundances. More importantly and in contrast to previous
studies, we find no CNO abundance anomalies brought on by e.g. binary
interaction or rotational mixing. Thus, this is the first time that abundances
from H II regions in the LMC can sensibly be cross-checked against those from B
stars by excluding evolutionary effects. We confirm the H II-region CNO
abundances to within the errors, in particular the extraordinarily low nitrogen
abundance of epsilon(N) around 7.0. Taken at face value, the nebular carbon
abundance is 0.16 dex below the B-star value which could be interpreted in
terms of interstellar dust depletion. Oxygen abundances from the two sources
agree to within 0.03 dex.
In comparison with the Galactic thin disk at MC metallicities, the Magellanic
Clouds are clearly nitrogen-poor environments.
|
[{'version': 'v1', 'created': 'Mon, 28 Jan 2002 18:57:18 GMT'}]
|
2009-11-07
|
[array(['Korn', 'A. J.', '', 'Uni-Sternwarte Munich'], dtype=object)
array(['Keller', 'S. C.', '', 'UCLLNL,\n USA'], dtype=object)
array(['Kaufer', 'A.', '', 'ESO, Chile'], dtype=object)
array(['Langer', 'N.', '', 'U of Utrecht, The Netherlands'], dtype=object)
array(['Przybilla', 'N.', '', 'USM, Germany'], dtype=object)
array(['Stahl', 'O.', '', 'Landessternwarte Heidelberg,\n Germany'],
dtype=object)
array(['Wolf', 'B.', '', 'Landessternwarte Heidelberg,\n Germany'],
dtype=object) ]
|
5,623 |
astro-ph/9905103
|
Hong Bae Ann
|
H. B. Ann(1), M. G. Lee(2), M. Y. Chun(3), S.-L. Kim(3), Y.-B.
Jeon(3), B.-G. Park(3), I.-S. Yuk, H. Sung(4), and S. H. Lee(1)((1)PNU, Korea
(2)SNU, Korea (3)BOAO, Korea (4)KNU, Korea)
|
BOAO Photometric Survey of Galactic Open Clusters. I. Berkeley 14,
Collinder 74, Biurakan 9, and NGC 2355
|
10 pages, 7 figures, accepted for publication in JKAS
| null | null | null |
astro-ph
| null |
Open clusters are useful tools to investigate the structure and evolution of
the Galactic disk. We have started a long-term project to obtain UBVI CCD
Photometry of open clusters which were little studied before, using the Doyak
1.8 m telescope of Bohyunsan Optical Astronomy Observatory in Korea. The
primary goals of this project are (1) to make a catalog of UBVI photometry of
open clusters, (2) to make an atlas of open clusters, and (3) to survey and
monitor variable stars in open clusters. Here we describe this project and
report the first results based on preliminary analysis of the data on four open
clusters in the survey sample: Be 14, Cr 74, Biu 9, and NGC 2355. Isochrone
fitting of the color-magnitude diagrams of the clusters shows that all of them
are intermediate age to old (0.3 - 1.6 Gyrs) open clusters with moderate
metallicity.
|
[{'version': 'v1', 'created': 'Mon, 10 May 1999 08:39:44 GMT'}]
|
2007-05-23
|
[array(['Ann', 'H. B.', ''], dtype=object)
array(['Lee', 'M. G.', ''], dtype=object)
array(['Chun', 'M. Y.', ''], dtype=object)
array(['Kim', 'S. -L.', ''], dtype=object)
array(['Jeon', 'Y. -B.', ''], dtype=object)
array(['Park', 'B. -G.', ''], dtype=object)
array(['Yuk', 'I. -S.', ''], dtype=object)
array(['Sung', 'H.', ''], dtype=object)
array(['Lee', 'S. H.', ''], dtype=object)]
|
5,624 |
1910.09757
|
Fredy Dubeibe
|
J. E. Osorio-Vargas, F. L. Dubeibe, Guillermo A. Gonz\'alez
|
Orbital dynamics in the photogravitational restricted four-body problem:
Lagrange configuration
|
14 pages, 10 figures
|
Physics Letters A 384 (15), 2020, p. 126305
|
10.1016/j.physleta.2020.126305
| null |
nlin.CD astro-ph.EP astro-ph.SR physics.space-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study the effect of the radiation parameter in the location, stability and
orbital dynamics in the Lagrange configuration of the restricted four-body
problem when one of the primaries is a radiating body. The equations of motion
for the test particle are derived by assuming that the primaries revolve in the
same plane with uniform angular velocity, and regardless of their mass
distribution, they will always lie at the vertices of an equilateral triangle.
The insertion of the radiation factor in the restricted four-body problem, let
us model more realistically the dynamics of a test particle orbiting an
astrophysical system with an active star. The dynamical mechanisms responsible
for the smoothening on the basin structures of the configuration space is
related to the decrease in the total number of fixed points with increasing
values of the radiation parameter. In our model of the Sun-Jupiter-Trojan
Asteroid system, it is found that despite the repulsive character of the solar
radiation pressure, there exist two stable libration points roughly located at
the position of L4 and L5 in the Sun-Jupiter system.
|
[{'version': 'v1', 'created': 'Tue, 22 Oct 2019 04:07:01 GMT'}]
|
2020-06-22
|
[array(['Osorio-Vargas', 'J. E.', ''], dtype=object)
array(['Dubeibe', 'F. L.', ''], dtype=object)
array(['González', 'Guillermo A.', ''], dtype=object)]
|
5,625 |
1404.5972
|
Roberto Santos
|
Roberto Baginski B. Santos and Vin\'icius Rocha da Silva
|
Non-Hermitian Model for Asymmetrical Tunneling
|
14 pages, 5 figures, submitted to Mod. Phys. Lett. B
|
Modern Physics Letters B 28(28), 1450223 (2014)
|
10.1142/S0217984914502236
| null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present a simple non-hermitian model to describe the phenomenon of
asymmetric tunneling between two energy-degenerate sites coupled by a
non-reciprocal interaction without dissipation. The system was described using
a biorthogonal family of energy eigenvectors, the dynamics of the system was
determined by the Schr\"odinger equation, and unitarity was effectively
restored by proper normalization of the state vectors. The results show that
the tunneling rates are indeed asymmetrical in this model, leading to an
equilibrium that displays unequal occupation of the degenerate systems even in
the absence of external interactions.
|
[{'version': 'v1', 'created': 'Wed, 23 Apr 2014 20:34:21 GMT'}
{'version': 'v2', 'created': 'Fri, 13 Jun 2014 21:47:47 GMT'}
{'version': 'v3', 'created': 'Mon, 25 Aug 2014 22:55:57 GMT'}]
|
2014-11-18
|
[array(['Santos', 'Roberto Baginski B.', ''], dtype=object)
array(['da Silva', 'Vinícius Rocha', ''], dtype=object)]
|
5,626 |
0708.3067
|
Roman Shvydkoy
|
Alexey Cheskidov, Roman Shvydkoy
|
On the regularity of weak solutions of the 3D Navier-Stokes equations in
$B^{-1}_{\infty,\infty}$
|
updated version -- a reference was added and a bug fixed
| null | null | null |
math.AP
| null |
We show that if a Leray-Hopf solution $u$ to the 3D Navier-Stokes equation
belongs to $C((0,T]; B^{-1}_{\infty,\infty})$ or its jumps in the
$B^{-1}_{\infty,\infty}$-norm do not exceed a constant multiple of viscosity,
then $u$ is regular on $(0,T]$. Our method uses frequency local estimates on
the nonlinear term, and yields an extension of the classical
Ladyzhenskaya-Prodi-Serrin criterion.
|
[{'version': 'v1', 'created': 'Wed, 22 Aug 2007 18:15:53 GMT'}
{'version': 'v2', 'created': 'Thu, 6 Sep 2007 20:31:06 GMT'}]
|
2007-09-06
|
[array(['Cheskidov', 'Alexey', ''], dtype=object)
array(['Shvydkoy', 'Roman', ''], dtype=object)]
|
5,627 |
2305.01752
|
Vladimir Lazi\'c
|
Vladimir Lazi\'c, Zhixin Xie
|
Nakayama-Zariski decomposition and the termination of flips
|
arXiv admin note: text overlap with arXiv:2007.06458
| null | null | null |
math.AG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We show that for pseudoeffective projective pairs the termination of one
sequence of flips implies the termination of all flips, assuming a natural
conjecture on the behaviour of the Nakayama-Zariski decomposition under the
operations of a Minimal Model Program.
|
[{'version': 'v1', 'created': 'Tue, 2 May 2023 19:36:48 GMT'}]
|
2023-05-04
|
[array(['Lazić', 'Vladimir', ''], dtype=object)
array(['Xie', 'Zhixin', ''], dtype=object)]
|
5,628 |
2301.12593
|
James Queeney
|
James Queeney and Mouhacine Benosman
|
Risk-Averse Model Uncertainty for Distributionally Robust Safe
Reinforcement Learning
| null | null | null | null |
cs.LG cs.AI stat.ML
|
http://creativecommons.org/licenses/by/4.0/
|
Many real-world domains require safe decision making in the presence of
uncertainty. In this work, we propose a deep reinforcement learning framework
for approaching this important problem. We consider a risk-averse perspective
towards model uncertainty through the use of coherent distortion risk measures,
and we show that our formulation is equivalent to a distributionally robust
safe reinforcement learning problem with robustness guarantees on performance
and safety. We propose an efficient implementation that only requires access to
a single training environment, and we demonstrate that our framework produces
robust, safe performance on a variety of continuous control tasks with safety
constraints in the Real-World Reinforcement Learning Suite.
|
[{'version': 'v1', 'created': 'Mon, 30 Jan 2023 00:37:06 GMT'}]
|
2023-01-31
|
[array(['Queeney', 'James', ''], dtype=object)
array(['Benosman', 'Mouhacine', ''], dtype=object)]
|
5,629 |
2303.10914
|
Atanu Nandy
|
Atanu Nandy
|
Localization property of a periodic chain of atoms with aperiodically
coupled quantum dots
|
5 pages (brief communication as conference publication), Proceedings
of International Conference on Recent Trends in Physics and Allied Sciences,
Vol. No. 1, Page-73-77 (2023), ISBN-978-93-89817-84-3
| null | null | null |
cond-mat.mes-hall
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The spectral landscape and the transport property of a translationally
invariant network with side-coupled quantum dots are demonstrated within the
tight-binding framework. For periodic environment band structure is
demonstrated analytically in details. Moreover, if the side-coupling here
follows a typical quasiperiodic Aubry-Andre-Harper type of modulation then such
off-diagonal disorder invites an exotic spectral feature for this model quantum
system. We perform an in-depth numerical analysis followed by the evaluation of
the density of eigenstates and the inverse participation ratio. The description
shows that this network creates a typical self-similar kind of multifractal
pattern in the energy landscape. The impacts of the strength of such aperiodic
connectivity and the slowness parameter are reported in this analysis. In the
present era of advanced technology and lithography techniques all such
non-trivial results definitely throw an achievable challenge to the
experimentalists to study the localization of excitation in such network
|
[{'version': 'v1', 'created': 'Mon, 20 Mar 2023 07:15:11 GMT'}]
|
2023-03-21
|
[array(['Nandy', 'Atanu', ''], dtype=object)]
|
5,630 |
quant-ph/9802021
|
Asher Peres
|
Asher Peres
|
Comparing the strengths of various Bell inequalities
|
This paper has been withdrawn
| null | null | null |
quant-ph
| null |
This paper has been withdrawn because it is superseded by quant-ph/9905084
"Bayesian analysis of Bell inequalities.
|
[{'version': 'v1', 'created': 'Mon, 9 Feb 1998 08:09:08 GMT'}
{'version': 'v2', 'created': 'Fri, 11 Jun 1999 07:58:39 GMT'}]
|
2007-05-23
|
[array(['Peres', 'Asher', ''], dtype=object)]
|
5,631 |
2102.07519
|
Nir Gov
|
Rituparno Mandal, Saroj Kumar Nandi, Chandan Dasgupta, Peter Sollich
and Nir S. Gov
|
The random first-order transition theory of active glass in the
high-activity regime
| null | null | null | null |
cond-mat.soft
|
http://creativecommons.org/licenses/by/4.0/
|
Dense active matter, in the fluid or amorphous-solid form, has generated
intense interest as a model for the dynamics inside living cells and
multicellular systems. An extension of the random first-order transition theory
(RFOT) to include activity was developed, whereby the activity of the
individual particles was added to the free energy of the system in the form of
the potential energy of an active particle, trapped by a harmonic potential
that describes the effective confinement by the surrounding medium. This
active-RFOT model was shown to successfully account for the dependence of the
structural relaxation time in the active glass, extracted from simulations, as
a function of the activity parameters: the magnitude of the active force
($f_0$) and its persistence time ($\tau_p$). However, significant deviations
were found in the limit of large activity (large $f_0$ and/or $\tau_p$). Here
we extend the active-RFOT model to high activity using an activity-dependent
harmonic confining potential, which we solve self-consistently. The extended
model predicts qualitative changes in the high activity regime, which agree
with the results of simulations in both three-dimensional and two-dimensional
models of active glass.
|
[{'version': 'v1', 'created': 'Mon, 15 Feb 2021 12:46:02 GMT'}]
|
2021-02-16
|
[array(['Mandal', 'Rituparno', ''], dtype=object)
array(['Nandi', 'Saroj Kumar', ''], dtype=object)
array(['Dasgupta', 'Chandan', ''], dtype=object)
array(['Sollich', 'Peter', ''], dtype=object)
array(['Gov', 'Nir S.', ''], dtype=object)]
|
5,632 |
1503.05542
|
Sa\v{s}a Novakovi\'c
|
Sa\v{s}a Novakovi\'c
|
Tilting objects on twisted forms of some relative flag varieties
| null | null | null | null |
math.AG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We prove the existence of tilting objects on generalized Brauer--Severi
varieties, some relative flags and some twisted forms of relative flags. As an
application we obtain tilting objects on certain homogeneous varieties of
classical type and on certain twisted forms of homogeneous varieties of type
$A_n$ and $C_n$.
|
[{'version': 'v1', 'created': 'Wed, 18 Mar 2015 19:33:13 GMT'}]
|
2015-03-19
|
[array(['Novaković', 'Saša', ''], dtype=object)]
|
5,633 |
0704.0900
|
Benoit Doucot
|
Benoit Doucot and Lev B. Ioffe
|
Voltage-Current curves for small Josephson junction arrays
|
12 pages, 4 figures
| null |
10.1103/PhysRevB.76.214507
| null |
cond-mat.supr-con cond-mat.mes-hall
| null |
We compute the current voltage characteristic of a chain of identical
Josephson circuits characterized by a large ratio of Josephson to charging
energy that are envisioned as the implementation of topologically protected
qubits. We show that in the limit of small coupling to the environment it
exhibits a non-monotonous behavior with a maximum voltage followed by a
parametrically large region where $V\propto 1/I$. We argue that its
experimental measurement provides a direct probe of the amplitude of the
quantum transitions in constituting Josephson circuits and thus allows their
full characterization.
|
[{'version': 'v1', 'created': 'Fri, 6 Apr 2007 17:10:23 GMT'}]
|
2009-11-13
|
[array(['Doucot', 'Benoit', ''], dtype=object)
array(['Ioffe', 'Lev B.', ''], dtype=object)]
|
5,634 |
2201.04401
|
M. Hakan Erkut
|
Mehmet Hakan Erkut
|
On the Spin Period of the Neutron Star in the Ultraluminous X-Ray Source
M51 ULX-8
|
6 pages, 2 figures, already published in European Journal of Science
and Technology
|
European Journal of Science and Technology, (25), 525-530 (2021)
|
10.31590/ejosat.931622
| null |
astro-ph.HE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The recent discovery of periodic pulsations from several members of the
ultraluminous X-ray source (ULX) family in nearby galaxies as well as in our
own galaxy unveiled the nature of the accreting compact object. Neutron stars
rather than black holes are currently believed to power a substantial number of
ULXs whether or not pulsations are observed. The detection of cyclotron
absorption lines in the X-ray spectrum of a ULX provides an alternative way to
identify the compact object as a neutron star. Among the non-pulsating ULXs,
the presence of a cyclotron resonance scattering feature (CRSF) in the spectrum
of M51 ULX-8 has been reported. In the present work, the magnetic field
strength on the surface of the neutron star in M51 ULX-8 is inferred from the
energy of the observed CRSF to estimate the beaming fraction in X-ray emission
and more importantly the observable range for the elusive neutron-star spin
period to be hopefully discovered by the forthcoming space missions in the near
future.
|
[{'version': 'v1', 'created': 'Wed, 12 Jan 2022 10:36:03 GMT'}]
|
2022-01-13
|
[array(['Erkut', 'Mehmet Hakan', ''], dtype=object)]
|
5,635 |
funct-an/9301002
|
Larry Schweitzer
|
Larry B. Schweitzer
|
Summary of Spectral Invariance Results
|
7 pages, plain Tex version 2.95, 1-23-93
|
C.R. Math. Acad. Sciences Canada XV(1) (1993), 13-18
| null | null |
funct-an math.OA
| null |
The author's recent results on spectral invariant dense subalgebras of
C*-algebras associated with dynamical systems are summarized. If G is a
compactly generated polynomial growth Type R Lie group, and the action of G on
S(M) (Schwartz functions on a locally compact G-space M) is tempered in a
certain sense, then there is a natural smooth crossed product S(G X M) which is
dense and spectral invariant in the C*-crossed product C*(G X M).
|
[{'version': 'v1', 'created': 'Sat, 23 Jan 1993 08:59:51 GMT'}]
|
2016-02-15
|
[array(['Schweitzer', 'Larry B.', ''], dtype=object)]
|
5,636 |
1701.07049
|
Sandeep Kumar
|
Paul C Lou and Sandeep Kumar
|
Spin mediated enhanced negative magnetoresistance in Ni80Fe20 and
p-silicon bilayer
|
17 pages 4 main figures and 2 supplementary figures
| null |
10.1016/j.ssc.2017.05.007
| null |
cond-mat.mes-hall cond-mat.mtrl-sci
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this work, we present an experimental study of spin mediated enhanced
negative magnetoresistance in Ni80Fe20 (50 nm)/p-Si (350 nm) bilayer. The
resistance measurement shows a reduction of ~2.5% for the bilayer specimen as
compared to 1.3% for Ni80Fe20 (50 nm) on oxide specimen for an out-of-plane
applied magnetic field of 3T. In the Ni80Fe20-only film, the negative
magnetoresistance behavior is attributed to anisotropic magnetoresistance. We
propose that spin polarization due to spin-Hall effect is the underlying cause
of the enhanced negative magnetoresistance observed in the bilayer. Silicon has
weak spin orbit coupling so spin Hall magnetoresistance measurement is not
feasible. We use V2{\omega} and V3{\omega} measurement as a function of
magnetic field and angular rotation of magnetic field in direction normal to
electric current to elucidate the spin-Hall effect. The angular rotation of
magnetic field shows a sinusoidal behavior for both V2{\omega} and V3{\omega},
which is attributed to the spin phonon interactions resulting from the
spin-Hall effect mediated spin polarization. We propose that the spin
polarization leads to a decrease in hole-phonon scattering resulting in
enhanced negative magnetoresistance.
|
[{'version': 'v1', 'created': 'Tue, 24 Jan 2017 19:38:48 GMT'}]
|
2017-05-08
|
[array(['Lou', 'Paul C', ''], dtype=object)
array(['Kumar', 'Sandeep', ''], dtype=object)]
|
5,637 |
2012.01511
|
Sina Honari
|
Sina Honari, Victor Constantin, Helge Rhodin, Mathieu Salzmann, Pascal
Fua
|
Temporal Representation Learning on Monocular Videos for 3D Human Pose
Estimation
|
Accepted in "IEEE Transactions on Pattern Analysis and Machine
Intelligence (TPAMI)"
|
IEEE Transactions on Pattern Analysis and Machine Intelligence,
2022
|
10.1109/TPAMI.2022.3215307
| null |
cs.CV cs.LG
|
http://creativecommons.org/licenses/by-nc-sa/4.0/
|
In this paper we propose an unsupervised feature extraction method to capture
temporal information on monocular videos, where we detect and encode subject of
interest in each frame and leverage contrastive self-supervised (CSS) learning
to extract rich latent vectors. Instead of simply treating the latent features
of nearby frames as positive pairs and those of temporally-distant ones as
negative pairs as in other CSS approaches, we explicitly disentangle each
latent vector into a time-variant component and a time-invariant one. We then
show that applying contrastive loss only to the time-variant features and
encouraging a gradual transition on them between nearby and away frames while
also reconstructing the input, extract rich temporal features, well-suited for
human pose estimation. Our approach reduces error by about 50% compared to the
standard CSS strategies, outperforms other unsupervised single-view methods and
matches the performance of multi-view techniques. When 2D pose is available,
our approach can extract even richer latent features and improve the 3D pose
estimation accuracy, outperforming other state-of-the-art weakly supervised
methods.
|
[{'version': 'v1', 'created': 'Wed, 2 Dec 2020 20:27:35 GMT'}
{'version': 'v2', 'created': 'Thu, 25 Mar 2021 18:17:03 GMT'}
{'version': 'v3', 'created': 'Thu, 14 Apr 2022 13:42:57 GMT'}
{'version': 'v4', 'created': 'Wed, 19 Oct 2022 14:24:17 GMT'}
{'version': 'v5', 'created': 'Fri, 25 Nov 2022 17:00:59 GMT'}]
|
2022-11-28
|
[array(['Honari', 'Sina', ''], dtype=object)
array(['Constantin', 'Victor', ''], dtype=object)
array(['Rhodin', 'Helge', ''], dtype=object)
array(['Salzmann', 'Mathieu', ''], dtype=object)
array(['Fua', 'Pascal', ''], dtype=object)]
|
5,638 |
2204.07471
|
David Radke
|
David Radke, Kate Larson, Tim Brecht
|
The Importance of Credo in Multiagent Learning
|
12 pages, 8 figures, Proceedings of the 22nd International Conference
on Autonomous Agents and Multiagent Systems (AAMAS 2023)
| null | null | null |
cs.AI
|
http://creativecommons.org/publicdomain/zero/1.0/
|
We propose a model for multi-objective optimization, a credo, for agents in a
system that are configured into multiple groups (i.e., teams). Our model of
credo regulates how agents optimize their behavior for the groups they belong
to. We evaluate credo in the context of challenging social dilemmas with
reinforcement learning agents. Our results indicate that the interests of
teammates, or the entire system, are not required to be fully aligned for
achieving globally beneficial outcomes. We identify two scenarios without full
common interest that achieve high equality and significantly higher mean
population rewards compared to when the interests of all agents are aligned.
|
[{'version': 'v1', 'created': 'Fri, 15 Apr 2022 14:12:13 GMT'}
{'version': 'v2', 'created': 'Wed, 12 Apr 2023 15:04:45 GMT'}]
|
2023-04-13
|
[array(['Radke', 'David', ''], dtype=object)
array(['Larson', 'Kate', ''], dtype=object)
array(['Brecht', 'Tim', ''], dtype=object)]
|
5,639 |
2301.11743
|
Valentin Pellhammer
|
Valentin Pellhammer
|
Oscillating Shock Profiles in Relativistic Fluid Dynamics
|
10 pages, 1 figure
| null | null | null |
math.AP math-ph math.MP physics.flu-dyn
|
http://creativecommons.org/licenses/by/4.0/
|
This note studies a model for relativistic pure-radiation fluids with
viscosity that was recently proposed by Bemfica, Disconzi and Noronha, and
shows that there are shock waves whose continuous shock profiles, if existing,
are oscillating in any variables. This behavior differs significantly from the
situation in classical fluid dynamics, in which canonical state variables are
monotone along the shock profile.
|
[{'version': 'v1', 'created': 'Fri, 27 Jan 2023 14:30:36 GMT'}]
|
2023-01-30
|
[array(['Pellhammer', 'Valentin', ''], dtype=object)]
|
5,640 |
1411.6183
|
Sukmoon Huh
|
Edoardo Ballico, Sukmoon Huh, Francesco Malaspina
|
Globally generated vector bundles on complete intersection Calabi-Yau
threefolds
|
35 pages; Comments welcome; minor corrections
| null | null | null |
math.AG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We investigate the globally generated vector bundles on complete intersection
Calabi-Yau threefolds with the first Chern class at most 2. We classify all the
globally generated vector bundles of an arbitrary rank on quintic in
$\mathbb{P}^4$ and investigate the globally generated vector bundles of rank 2
on complete intersection Calabi-Yau threefolds of codimension 2.
|
[{'version': 'v1', 'created': 'Sun, 23 Nov 2014 02:17:51 GMT'}
{'version': 'v2', 'created': 'Thu, 22 Jan 2015 18:51:40 GMT'}]
|
2015-01-23
|
[array(['Ballico', 'Edoardo', ''], dtype=object)
array(['Huh', 'Sukmoon', ''], dtype=object)
array(['Malaspina', 'Francesco', ''], dtype=object)]
|
5,641 |
0905.1489
|
Dan Burghelea
|
Dan Burghelea
|
Cyclic theory for commutative differential graded algebras and
s-cohomology
| null | null | null | null |
math.AT math.KT
|
http://creativecommons.org/licenses/by/3.0/
|
In this paper one considers three homotopy functors on the category of
manifolds, $hH^\ast, cH^\ast, sH^\ast,$ and parallel them with other three
homotopy functors on the category of connected commutative differential graded
algebras, $HH^\ast, CH^\ast, SH^\ast.$ If $P$ is a smooth 1-connected manifold
and the algebra is the de-Rham algebra of $P$ the two pairs of functors agree
but in general do not. The functors $ HH^\ast $ and $CH^\ast$ can be also
derived as Hochschild resp. cyclic homology of commutative differential graded
algebra, but this is not the way they are introduced here. The third $SH^\ast
,$ although inspired from negative cyclic homology, can not be identified with
any sort of cyclic homology of any algebra. The functor $sH^\ast$ might play
some role in topology. Important tools in the construction of the functors
$HH^\ast, CH^\ast $and $SH^\ast ,$ in addition to the linear algebra suggested
by cyclic theory, are Sullivan minimal model theorem and the "free loop"
construction described in this paper.
|
[{'version': 'v1', 'created': 'Sun, 10 May 2009 16:32:57 GMT'}]
|
2009-05-12
|
[array(['Burghelea', 'Dan', ''], dtype=object)]
|
5,642 |
2201.12090
|
Louis Filstroff
|
Ayush Bharti, Louis Filstroff, Samuel Kaski
|
Approximate Bayesian Computation with Domain Expert in the Loop
|
Accepted for publication at ICML 2022. Code available at
https://github.com/lfilstro/HITL-ABC
| null | null | null |
stat.ML cs.LG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Approximate Bayesian computation (ABC) is a popular likelihood-free inference
method for models with intractable likelihood functions. As ABC methods usually
rely on comparing summary statistics of observed and simulated data, the choice
of the statistics is crucial. This choice involves a trade-off between loss of
information and dimensionality reduction, and is often determined based on
domain knowledge. However, handcrafting and selecting suitable statistics is a
laborious task involving multiple trial-and-error steps. In this work, we
introduce an active learning method for ABC statistics selection which reduces
the domain expert's work considerably. By involving the experts, we are able to
handle misspecified models, unlike the existing dimension reduction methods.
Moreover, empirical results show better posterior estimates than with existing
methods, when the simulation budget is limited.
|
[{'version': 'v1', 'created': 'Fri, 28 Jan 2022 12:58:51 GMT'}
{'version': 'v2', 'created': 'Mon, 20 Jun 2022 08:26:38 GMT'}]
|
2022-06-22
|
[array(['Bharti', 'Ayush', ''], dtype=object)
array(['Filstroff', 'Louis', ''], dtype=object)
array(['Kaski', 'Samuel', ''], dtype=object)]
|
5,643 |
1011.4592
|
Amine Asselah
|
Amine Asselah, Alexandre Gaudilli\`ere
|
Sublogarithmic fluctuations for internal DLA
|
Published in at http://dx.doi.org/10.1214/11-AOP735 the Annals of
Probability (http://www.imstat.org/aop/) by the Institute of Mathematical
Statistics (http://www.imstat.org)
|
Annals of Probability 2013, Vol. 41, No. 3A, 1160-1179
|
10.1214/11-AOP735
|
IMS-AOP-AOP735
|
math.PR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider internal diffusion limited aggregation in dimension larger than
or equal to two. This is a random cluster growth model, where random walks
start at the origin of the d-dimensional lattice, one at a time, and stop
moving when reaching a site that is not occupied by previous walks. It is known
that the asymptotic shape of the cluster is a sphere. When the dimension is two
or more, we have shown in a previous paper that the inner (resp., outer)
fluctuations of its radius is at most of order $\log(\mathrm{radius})$ [resp.,
$\log^2(\mathrm{radius})$]. Using the same approach, we improve the upper bound
on the inner fluctuation to $\sqrt{\log(\mathrm{radius})}$ when d is larger
than or equal to three. The inner fluctuation is then used to obtain a similar
upper bound on the outer fluctuation.
|
[{'version': 'v1', 'created': 'Sat, 20 Nov 2010 17:40:08 GMT'}
{'version': 'v2', 'created': 'Fri, 24 Dec 2010 09:07:08 GMT'}
{'version': 'v3', 'created': 'Sun, 27 Nov 2011 16:24:24 GMT'}
{'version': 'v4', 'created': 'Fri, 24 May 2013 12:19:04 GMT'}]
|
2013-05-27
|
[array(['Asselah', 'Amine', ''], dtype=object)
array(['Gaudillière', 'Alexandre', ''], dtype=object)]
|
5,644 |
2004.11460
|
Jimmy Jose
|
Amruthlal M, Devika S, Ameer Suhail P A, Aravind K Menon, Vignesh
Krishnan, Alan Thomas, Manu Thomas, Sanjay G, Lakshmi Kanth L R, Jimmy Jose,
Harikrishnan S
|
Development of a Machine Learning Model and Mobile Application to Aid in
Predicting Dosage of Vitamin K Antagonists Among Indian Patients
| null | null | null | null |
q-bio.QM cs.CY cs.LG stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Patients who undergo mechanical heart valve replacements or have conditions
like Atrial Fibrillation have to take Vitamin K Antagonists (VKA) drugs to
prevent coagulation of blood. These drugs have narrow therapeutic range and
need to be very closely monitored due to life threatening side effects. The
dosage of VKA drug is determined and revised by a physician based on
Prothrombin Time - International Normalised Ratio (PT-INR) value obtained
through a blood test. Our work aimed at predicting the maintenance dosage of
warfarin, the present most widely recommended anticoagulant drug, using the
de-identified medical data collected from 109 patients from Kerala. A Support
Vector Machine (SVM) Regression model was built to predict the maintenance
dosage of warfarin, for patients who have been undergoing treatment from a
physician and have reached stable INR values between 2.0 and 4.0.
|
[{'version': 'v1', 'created': 'Sun, 19 Apr 2020 05:54:58 GMT'}]
|
2020-04-27
|
[array(['M', 'Amruthlal', ''], dtype=object)
array(['S', 'Devika', ''], dtype=object)
array(['A', 'Ameer Suhail P', ''], dtype=object)
array(['Menon', 'Aravind K', ''], dtype=object)
array(['Krishnan', 'Vignesh', ''], dtype=object)
array(['Thomas', 'Alan', ''], dtype=object)
array(['Thomas', 'Manu', ''], dtype=object)
array(['G', 'Sanjay', ''], dtype=object)
array(['R', 'Lakshmi Kanth L', ''], dtype=object)
array(['Jose', 'Jimmy', ''], dtype=object)
array(['S', 'Harikrishnan', ''], dtype=object)]
|
5,645 |
0910.3957
|
Adrian E. Feiguin
|
A. E. Feiguin and G. A. Fiete
|
Spectral properties of a spin-incoherent Luttinger Liquid
|
7 pages, 5 figures
|
Phys. Rev. B 81, 075108 (2010)
|
10.1103/PhysRevB.81.075108
| null |
cond-mat.str-el
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present time-dependent density matrix renormalization group (DMRG) results
for strongly interacting one dimensional fermionic systems at finite
temperature. When interactions are strong the characteristic spin energy can be
greatly suppressed relative to the characteristic charge energy, allowing for
the possibility of spin-incoherent Luttinger liquid physics when the
temperature is high compared to the spin energy, but small compared to the
charge energy. Using DMRG we compute the spectral properties of the $t-J$ model
at arbitrary temperatures with respect to both spin and charge energies. We
study the full crossover from the Luttinger liquid regime to the
spin-incoherent regime,focusing on small $J/t$, where the signatures of
spin-incoherent behavior are more manifest. Our method allows us to access the
analytically intractable regime where temperature is of the order of the spin
energy, $T\sim J$. Our results should be helpful in the interpretation of
experiments that may be in the crossover regime, $T\sim J$, and apply to
one-dimensional cold atomic gases where finite-temperature effects are
appreciable. The technique may also be used to guide the development of
analytical approximations for the crossover regime.
|
[{'version': 'v1', 'created': 'Tue, 20 Oct 2009 20:06:44 GMT'}]
|
2010-02-18
|
[array(['Feiguin', 'A. E.', ''], dtype=object)
array(['Fiete', 'G. A.', ''], dtype=object)]
|
5,646 |
cond-mat/0304351
|
Ian McCulloch
|
M. Gulacsi, I. P. McCulloch, A. Juozapavicius, A. Rosengren
|
Magnetism in the dilute Kondo lattice model
|
11 pages, 2 figures
| null |
10.1103/PhysRevB.69.174425
| null |
cond-mat.str-el
| null |
The one dimensional dilute Kondo lattice model is investigated by means of
bosonization for different dilution patterns of the array of impurity spins.
The physical picture is very different if a commensurate or incommensurate
doping of the impurity spins is considered. For the commensurate case, the
obtained phase diagram is verified using a non-Abelian density-matrix
renormalization-group algorithm. The paramagnetic phase widens at the expense
of the ferromagnetic phase as the $f$-spins are diluted. For the incommensurate
case, antiferromagnetism is found at low doping, which distinguishes the dilute
Kondo lattice model from the standard Kondo lattice model.
|
[{'version': 'v1', 'created': 'Tue, 15 Apr 2003 22:35:39 GMT'}]
|
2009-11-10
|
[array(['Gulacsi', 'M.', ''], dtype=object)
array(['McCulloch', 'I. P.', ''], dtype=object)
array(['Juozapavicius', 'A.', ''], dtype=object)
array(['Rosengren', 'A.', ''], dtype=object)]
|
5,647 |
1802.07981
|
David Benisty
|
David Benisty, Eduardo I. Guendelman
|
Unified Dark Energy and Dark Matter from Dynamical Space Time
|
Accepted for publication in Phys.Rev.D
|
Phys. Rev. D 98, 023506 (2018)
|
10.1103/PhysRevD.98.023506
| null |
gr-qc astro-ph.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A unification of dark matter and dark energy based on a dynamical space time
theory is suggested. By introducing a dynamical space time vector field
$\chi_\mu$ as a Lagrange multiplier, a conservation of an energy momentum
tensor $T^{\mu\nu}_{(\chi)}$ is implemented. This Lagrangian generalizes the
"Unified dark energy and dark matter from a scalar field different from
quintessence" [Phys.RevD 81, 043520 (2010)] which did not consider a Lagrangian
formulation. This generalization allows the solutions which were found
previously, but in addition to that also non singular bouncing solutions that
rapidly approach to the $\Lambda$CDM model. The dynamical time vector field
exactly coincides with the cosmic time for the a $\Lambda$CDM solution and
suffers a slight shift (advances slower) with respect to the cosmic time in the
region close to the bounce for the bouncing non singular solutions. In addition
we introduced some exponential potential which could enter into the
$T^{\mu\nu}_{(\chi)}$ stress energy tensor or coupled directly to the measure
$\sqrt{-g}$, gives a possible interaction between DE and DM and could explain
the coincidence problem.
|
[{'version': 'v1', 'created': 'Thu, 22 Feb 2018 11:18:32 GMT'}
{'version': 'v2', 'created': 'Wed, 28 Feb 2018 10:44:00 GMT'}
{'version': 'v3', 'created': 'Sat, 12 May 2018 19:26:28 GMT'}
{'version': 'v4', 'created': 'Tue, 26 Jun 2018 20:19:26 GMT'}]
|
2018-07-11
|
[array(['Benisty', 'David', ''], dtype=object)
array(['Guendelman', 'Eduardo I.', ''], dtype=object)]
|
5,648 |
1811.01967
|
Fran\c{c}ois Mernier
|
F. Mernier, V. Biffi, H. Yamaguchi, P. Medvedev, A. Simionescu, S.
Ettori, N. Werner, J. S. Kaastra, J. de Plaa, L. Gu
|
Enrichment of the hot intracluster medium: observations
|
49 pages. Review paper. Accepted for publication on Space Science
Reviews. This is the companion review of "Enrichment of the hot intracluster
medium: numerical simulations"
|
Space Science Reviews (2018) Volume 214, Issue 8, article id. 129,
40 pp
|
10.1007/s11214-018-0565-7
| null |
astro-ph.HE astro-ph.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Four decades ago, the firm detection of an Fe-K emission feature in the X-ray
spectrum of the Perseus cluster revealed the presence of iron in its hot
intracluster medium (ICM). With more advanced missions successfully launched
over the last 20 years, this discovery has been extended to many other metals
and to the hot atmospheres of many other galaxy clusters, groups, and giant
elliptical galaxies, as evidence that the elemental bricks of life -
synthesized by stars and supernovae - are also found at the largest scales of
the Universe. Because the ICM, emitting in X-rays, is in collisional ionisation
equilibrium, its elemental abundances can in principle be accurately measured.
These abundance measurements, in turn, are valuable to constrain the physics
and environmental conditions of the Type Ia and core-collapse supernovae that
exploded and enriched the ICM over the entire cluster volume. On the other
hand, the spatial distribution of metals across the ICM constitutes a
remarkable signature of the chemical history and evolution of clusters, groups,
and ellipticals. Here, we summarise the most significant achievements in
measuring elemental abundances in the ICM, from the very first attempts up to
the era of XMM-Newton, Chandra, and Suzaku and the unprecedented results
obtained by Hitomi. We also discuss the current systematic limitations of these
measurements and how the future missions XRISM and Athena will further improve
our current knowledge of the ICM enrichment.
|
[{'version': 'v1', 'created': 'Mon, 5 Nov 2018 19:00:04 GMT'}
{'version': 'v2', 'created': 'Thu, 8 Nov 2018 09:53:19 GMT'}
{'version': 'v3', 'created': 'Wed, 6 Feb 2019 15:09:55 GMT'}]
|
2019-02-07
|
[array(['Mernier', 'F.', ''], dtype=object)
array(['Biffi', 'V.', ''], dtype=object)
array(['Yamaguchi', 'H.', ''], dtype=object)
array(['Medvedev', 'P.', ''], dtype=object)
array(['Simionescu', 'A.', ''], dtype=object)
array(['Ettori', 'S.', ''], dtype=object)
array(['Werner', 'N.', ''], dtype=object)
array(['Kaastra', 'J. S.', ''], dtype=object)
array(['de Plaa', 'J.', ''], dtype=object)
array(['Gu', 'L.', ''], dtype=object)]
|
5,649 |
astro-ph/0111502
|
Manfred P. Leubner
|
Manfred P. Leubner
|
A measure of gravitational entropy and structure formation
|
Talk presented at the COSMO-01 Workshop, Rovaniemi, Finnland, August
30 - September 4, 2001. 14 pages, LaTeX, 3 eps figures
| null | null | null |
astro-ph
| null |
Increasing inhomogeneity due to gravitational clumping reflects increasing
gravitational entropy in a time evolving universe. Starting from an ensemble of
uniformly distributed particles it is demonstrated that gravitational
clustering is subject to a specific quantization rule for the amount of
increase of gravitational entropy during the formation of inhomogeneities. The
gain of gravitational entropy at each higher order merging process within the
system is shown to result as a natural consequence from an extremal condition
involved. The resulting discrete spectrum of nested, bound structures of
specific mass and radius, ranging from the particle physics scale to galaxies
and super clusters, provides a unified view of fundamental inhomogeneity scales
in the universe from gravitational entropy considerations. Consequently, also
the gravitational arrow of time points in the direction of stepwise increasing
entropy or inhomogeneity, respectively.
|
[{'version': 'v1', 'created': 'Tue, 27 Nov 2001 14:54:22 GMT'}]
|
2007-05-23
|
[array(['Leubner', 'Manfred P.', ''], dtype=object)]
|
5,650 |
1806.10070
|
Michael Pravikoff
|
M.S.Pravikoff, Ph. Hubert and H. Ohsumi
|
Radioactivity measurements of green tea leaves from Japan after the
Fukushima incident
|
10 pages, 7 figures, 1 table
| null | null | null |
physics.pop-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A series of 32 green tea leaves samples from different Asian producers were
analyzed by direct {\gamma}-ray spectrometry at the PRISNA facility in
Bordeaux. All the samples contain about 500 Bq/kg of 40K and 10 Bq/kg of 210Pb.
As expected, most of the recent Japanese samples contain also the 137Cs and
134Cs radio-isotopes, whose activity distributions are studied as a function of
the geographical origin in order to get an insight on the outspread and fallout
of radionuclides stemming from the 2011 Fukushima Dai-ichi Nuclear Power Plant
incident.
|
[{'version': 'v1', 'created': 'Tue, 26 Jun 2018 15:43:45 GMT'}]
|
2018-06-27
|
[array(['Pravikoff', 'M. S.', ''], dtype=object)
array(['Hubert', 'Ph.', ''], dtype=object)
array(['Ohsumi', 'H.', ''], dtype=object)]
|
5,651 |
2105.06421
|
Mahdi Pourmirzaei
|
Mahdi Pourmirzaei, Gholam Ali Montazer, Farzaneh Esmaili
|
Using Self-Supervised Auxiliary Tasks to Improve Fine-Grained Facial
Representation
| null | null | null | null |
cs.CV cs.AI cs.LG
|
http://creativecommons.org/licenses/by-nc-sa/4.0/
|
In this paper, at first, the impact of ImageNet pre-training on fine-grained
Facial Emotion Recognition (FER) is investigated which shows that when enough
augmentations on images are applied, training from scratch provides better
result than fine-tuning on ImageNet pre-training. Next, we propose a method to
improve fine-grained and in-the-wild FER, called Hybrid Multi-Task Learning
(HMTL). HMTL uses Self-Supervised Learning (SSL) as an auxiliary task during
classical Supervised Learning (SL) in the form of Multi-Task Learning (MTL).
Leveraging SSL during training can gain additional information from images for
the primary fine-grained SL task. We investigate how proposed HMTL can be used
in the FER domain by designing two customized version of common pre-text task
techniques, puzzling and in-painting. We achieve state-of-the-art results on
the AffectNet benchmark via two types of HMTL, without utilizing pre-training
on additional data. Experimental results on the common SSL pre-training and
proposed HMTL demonstrate the difference and superiority of our work. However,
HMTL is not only limited to FER domain. Experiments on two types of
fine-grained facial tasks, i.e., head pose estimation and gender recognition,
reveals the potential of using HMTL to improve fine-grained facial
representation.
|
[{'version': 'v1', 'created': 'Thu, 13 May 2021 16:56:36 GMT'}
{'version': 'v2', 'created': 'Thu, 19 Aug 2021 18:10:15 GMT'}
{'version': 'v3', 'created': 'Mon, 8 Aug 2022 17:48:09 GMT'}]
|
2022-08-09
|
[array(['Pourmirzaei', 'Mahdi', ''], dtype=object)
array(['Montazer', 'Gholam Ali', ''], dtype=object)
array(['Esmaili', 'Farzaneh', ''], dtype=object)]
|
5,652 |
1807.01459
|
Sheng Jin
|
Sheng Jin, Hongxun Yao, Xiaoshuai Sun, Shangchen Zhou, Lei Zhang,
Xiansheng Hua
|
Deep Saliency Hashing
| null | null | null | null |
cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In recent years, hashing methods have been proved to be effective and
efficient for the large-scale Web media search. However, the existing general
hashing methods have limited discriminative power for describing fine-grained
objects that share similar overall appearance but have subtle difference. To
solve this problem, we for the first time introduce the attention mechanism to
the learning of fine-grained hashing codes. Specifically, we propose a novel
deep hashing model, named deep saliency hashing (DSaH), which automatically
mines salient regions and learns semantic-preserving hashing codes
simultaneously. DSaH is a two-step end-to-end model consisting of an attention
network and a hashing network. Our loss function contains three basic
components, including the semantic loss, the saliency loss, and the
quantization loss. As the core of DSaH, the saliency loss guides the attention
network to mine discriminative regions from pairs of images. We conduct
extensive experiments on both fine-grained and general retrieval datasets for
performance evaluation. Experimental results on fine-grained datasets,
including Oxford Flowers-17, Stanford Dogs-120, and CUB Bird demonstrate that
our DSaH performs the best for fine-grained retrieval task and beats the
strongest competitor (DTQ) by approximately 10% on both Stanford Dogs-120 and
CUB Bird. DSaH is also comparable to several state-of-the-art hashing methods
on general datasets, including CIFAR-10 and NUS-WIDE.
|
[{'version': 'v1', 'created': 'Wed, 4 Jul 2018 06:31:13 GMT'}
{'version': 'v2', 'created': 'Fri, 1 Feb 2019 05:30:49 GMT'}]
|
2019-02-04
|
[array(['Jin', 'Sheng', ''], dtype=object)
array(['Yao', 'Hongxun', ''], dtype=object)
array(['Sun', 'Xiaoshuai', ''], dtype=object)
array(['Zhou', 'Shangchen', ''], dtype=object)
array(['Zhang', 'Lei', ''], dtype=object)
array(['Hua', 'Xiansheng', ''], dtype=object)]
|
5,653 |
2303.04850
|
Pauline Besserve
|
Thomas Ayral, Pauline Besserve, Denis Lacroix, Edgar Andres Ruiz
Guzman
|
Quantum computing with and for many-body physics
| null | null | null | null |
quant-ph cond-mat.str-el nucl-th
|
http://creativecommons.org/licenses/by/4.0/
|
Quantum computing technologies are making steady progress. This has opened
new opportunities for tackling problems whose complexity prevents their
description on classical computers. A prototypical example of these complex
problems are interacting quantum many-body systems: on the one hand, these
systems are known to become rapidly prohibitive to describe using classical
computers when their size increases. On the other hand, these systems are
precisely those which are used in the laboratory to build quantum computing
platforms. This arguably makes them one of the most promising early use cases
of quantum computing. In this review, we explain how quantum many-body systems
are used to build quantum processors, and how, in turn, current and future
quantum processors can be used to describe large many-body systems of fermions
such as electrons and nucleons. The review includes an introduction to analog
and digital quantum devices, the mapping of Fermi systems and their
Hamiltonians onto qubit registers, as well as an overview of methods to access
their static and dynamical properties. We also highlight some aspects related
to entanglement, and touch on the description, influence and processing of
decoherence in quantum devices.
|
[{'version': 'v1', 'created': 'Wed, 8 Mar 2023 19:34:55 GMT'}]
|
2023-03-10
|
[array(['Ayral', 'Thomas', ''], dtype=object)
array(['Besserve', 'Pauline', ''], dtype=object)
array(['Lacroix', 'Denis', ''], dtype=object)
array(['Guzman', 'Edgar Andres Ruiz', ''], dtype=object)]
|
5,654 |
0704.3055
|
Maurice Kleman
|
Maurice Kleman, Jacques Friedel
|
Disclinations, dislocations and continuous defects: a reappraisal
|
72 pages, 36 figures
|
Rev. Mod. Phys. January-March 2008, 80, 61-115
|
10.1103/RevModPhys.80.61
| null |
cond-mat.soft
| null |
Disclinations, first observed in mesomorphic phases, are relevant to a number
of ill-ordered condensed matter media, with continuous symmetries or frustrated
order. They also appear in polycrystals at the edges of grain boundaries. They
are of limited interest in solid single crystals, where, owing to their large
elastic stresses, they mostly appear in close pairs of opposite signs. The
relaxation mechanisms associated with a disclination in its creation, motion,
change of shape, involve an interplay with continuous or quantized dislocations
and/or continuous disclinations. These are attached to the disclinations or are
akin to Nye's dislocation densities, well suited here. The notion of 'extended
Volterra process' takes these relaxation processes into account and covers
different situations where this interplay takes place. These concepts are
illustrated by applications in amorphous solids, mesomorphic phases and
frustrated media in their curved habit space. The powerful topological theory
of line defects only considers defects stable against relaxation processes
compatible with the structure considered. It can be seen as a simplified case
of the approach considered here, well suited for media of high plasticity
or/and complex structures. Topological stability cannot guarantee energetic
stability and sometimes cannot distinguish finer details of structure of
defects.
|
[{'version': 'v1', 'created': 'Mon, 23 Apr 2007 19:30:04 GMT'}]
|
2009-11-13
|
[array(['Kleman', 'Maurice', ''], dtype=object)
array(['Friedel', 'Jacques', ''], dtype=object)]
|
5,655 |
1611.06464
|
Lior Shamir
|
Lior Shamir
|
Morphology-based query for galaxy image databases
|
PASP, accepted
| null |
10.1088/1538-3873/129/972/024003
| null |
astro-ph.IM
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Galaxies of rare morphology are of paramount scientific interest, as they
carry important information about the past, present, and future universe. Once
a rare galaxy is identified, studying it more effectively requires a set of
galaxies of similar morphology, allowing generalization and statistical
analysis that cannot be done when $N=1$. Databases generated by digital sky
surveys can contain a very large number of galaxy images, and therefore once a
rare galaxy of interest is identified it is possible that more instances of the
same morphology are also present in the database. However, when a researcher
identifies a certain galaxy of rare morphology in the database, it is virtually
impossible to mine the database manually in the search for galaxies of similar
morphology. Here we propose a computer method that can automatically search
databases of galaxy images and identify galaxies that are morphologically
similar to a certain user-defined query galaxy. That is, the researcher
provides an image of a galaxy of interest, and the pattern recognition system
automatically returns a list of galaxies that are visually similar to the
target galaxy. The algorithm uses a comprehensive set of descriptors, allowing
it to support different types of galaxies, and it is not limited to a finite
set of known morphology. While the list of returned galaxies is neither clean
nor complete, it contains a far higher frequency of galaxies of the morphology
of interest, providing a substantial reduction of the data. Such algorithms can
be integrated into data management systems of autonomous digital sky surveys
such as the Large Synoptic Survey Telescope (LSST), where the number of
galaxies in the database is extremely large. The source code of the method is
available at http://vfacstaff.ltu.edu/lshamir/downloads/udat.
|
[{'version': 'v1', 'created': 'Sun, 20 Nov 2016 03:12:05 GMT'}]
|
2017-01-04
|
[array(['Shamir', 'Lior', ''], dtype=object)]
|
5,656 |
2005.01521
|
Christophe Cornut
|
Christophe Cornut (IMJ-PRG)
|
On triangles with a minuscule side
|
in French
|
Journal of Lie Theory, Heldermann Verlag, A para{\^i}tre, 31,
pp.957-968
| null | null |
math.GR math.RT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Let $W\subset O(V)$ be the Weyl group of a root system $R\subset V$. If
$a+b+c=0=a'+b'+c'$ with $a$, $b$ and $c$ respectively conjugated to $a'$, $b'$
and $c'$ in V , then $(a,b,c)$ is conjugated to $(a',b',c')$ in $V^3$ when each
projection of $a$ to an irreducible component of $V$ is co-linear to a
minuscule coweight.
|
[{'version': 'v1', 'created': 'Mon, 4 May 2020 14:33:52 GMT'}
{'version': 'v2', 'created': 'Wed, 1 Dec 2021 10:31:48 GMT'}]
|
2021-12-02
|
[array(['Cornut', 'Christophe', '', 'IMJ-PRG'], dtype=object)]
|
5,657 |
0912.3624
|
Dimitrios Giataganas
|
Dimitrios Giataganas
|
On the non-BPS string solutions in Sasaki-Einstein gauge/gravity duality
|
35 pages, 9 figures
|
JHEP 1006:016,2010
|
10.1007/JHEP06(2010)016
|
WITS-CTP-050
|
hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present an extensive analysis on several string solutions in AdS_5 x Ypq
and find some interesting properties of their energy-spin relations. Their
energy depends always on the parameter a(p,q) which characterizes these
manifolds. The range of this parameter for the string solutions is constrained
by the Sasaki-Einstein constraints that the solutions should satisfy. Hence
some string solutions we find are not valid for the whole class of Ypq
manifolds. For some of our solutions, when the maximum allowed value of a(p,q)
corresponds to the string approaching the poles of the squashed sphere in Ypq,
their energy at this limit approaches the BPS one. Thus certain non-BPS string
solutions in the whole class of Sasaki-Einstein manifolds, can become BPS in
particular manifolds. For the solutions with this property we point out that
this behavior is independent of the string motion in the other directions on
the manifold. We expect that in the field theory the corresponding generic
operators to these semi-classical strings, become BPS at certain quivers.
|
[{'version': 'v1', 'created': 'Fri, 18 Dec 2009 16:57:42 GMT'}]
|
2014-11-20
|
[array(['Giataganas', 'Dimitrios', ''], dtype=object)]
|
5,658 |
2102.09936
|
Sara Sangtarash
|
Sara Sangtarash
|
Dual attenuation factor in nanographene molecular wires
| null | null | null | null |
cond-mat.mes-hall cond-mat.mtrl-sci
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Designing molecular nanowires with high electrical conductance that
facilitate efficient charge transport over long distances are highly desirable
for future molecular-scale circuitry. However most of the molecular wires act
as tunnel barriers and their electrical conductance is decaying exponentially
with increasing the length. Just recently a few studies have shown increasing
conductance with length. In this study, for the first time, we have identified
new class of molecular wires that exhibit both increase and decrease of room
temperature conductance with length (dual attenuation factor) depend on their
connection points to electrodes. We show that this dual attenuation factor is
an inherent property of these graphene-like nanowires and its demonstration
depends on the constructive quantum interference pattern for different
connectivities to electrode. This is significant because a given nanographene
molecular wire can show both negative and positive attenuation factor. This
enables a systematic design of connectivity dependent high/low-conductance
molecular wires for future molecular-scale circuitry.
|
[{'version': 'v1', 'created': 'Fri, 19 Feb 2021 13:54:11 GMT'}]
|
2021-02-22
|
[array(['Sangtarash', 'Sara', ''], dtype=object)]
|
5,659 |
2112.07799
|
Shu Wang
|
Shu Wang, Linhua Jiang, Yue Shen, Luis C. Ho, Marianne Vestergaard,
Eduardo Banados, Chris J. Willott, Jin Wu, Siwei Zou, Jinyi Yang, Feige Wang,
Xiaohui Fan, and Xue-Bing Wu
|
Metallicity in Quasar Broad Line Regions at Redshift $\sim$ 6
|
ApJ, in press
| null |
10.3847/1538-4357/ac3a69
| null |
astro-ph.GA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Broad line regions (BLRs) in high-redshift quasars provide crucial
information of chemical enrichment in the early universe. Here we present a
study of BLR metallicities in 33 quasars at redshift $5.7<z<6.4$. Using the
near-IR spectra of the quasars obtained from the Gemini telescope, we measure
their rest-frame UV emission line flux and calculate flux ratios. We then
estimate BLR metallicities with empirical calibrations based on photoionization
models. The inferred median metallicity of our sample is a few times the solar
value, indicating that the BLR gas had been highly metal-enriched at $z\sim6$.
We compare our sample with a low-redshift quasar sample with similar
luminosities and find no evidence of redshift evolution in quasar BLR
metallicities. This is consistent with previous studies. The Fe II$/$Mg II flux
ratio, a proxy for the Fe$/\alpha$ element abundance ratio, shows no redshift
evolution as well, further supporting rapid nuclear star formation at $z\sim6$.
We also find that the black hole mass-BLR metallicity relation at $z\sim6$ is
consistent with the relation measured at $2<z<5$, suggesting that our results
are not biased by a selection effect due to this relation.
|
[{'version': 'v1', 'created': 'Tue, 14 Dec 2021 23:59:59 GMT'}]
|
2022-02-09
|
[array(['Wang', 'Shu', ''], dtype=object)
array(['Jiang', 'Linhua', ''], dtype=object)
array(['Shen', 'Yue', ''], dtype=object)
array(['Ho', 'Luis C.', ''], dtype=object)
array(['Vestergaard', 'Marianne', ''], dtype=object)
array(['Banados', 'Eduardo', ''], dtype=object)
array(['Willott', 'Chris J.', ''], dtype=object)
array(['Wu', 'Jin', ''], dtype=object)
array(['Zou', 'Siwei', ''], dtype=object)
array(['Yang', 'Jinyi', ''], dtype=object)
array(['Wang', 'Feige', ''], dtype=object)
array(['Fan', 'Xiaohui', ''], dtype=object)
array(['Wu', 'Xue-Bing', ''], dtype=object)]
|
5,660 |
2302.10250
|
Jayden Newstead
|
Bhaskar Dutta, Wei-Chih Huang, Jayden L. Newstead
|
Probing the dark sector with nuclear transition photons
|
5 pages, 4 figures. V2 updated with bounds from KARMEN and
projections for PIP2BD
| null | null | null |
hep-ph nucl-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Here we present a novel probe of light ($\lesssim O(100)$ MeV) dark matter
(DM) using pion decay-at-rest experiments. Dark sector particles produced
during pion decay can be detected when they scatter in a distant detector. The
decay of nuclei excited by the inelastic scattering of DM is an unexploited
channel which has significantly lower background compared to similar searches
using the elastic scattering channel. Using this channel, %with an additional
timing cut to further reduce the background, we demonstrate an increased
sensitivity to a dark photon portal DM model compared to the existing
constraints. The sensitivity of the DM parameter space is not restricted by the
detector threshold as in the elastic channel. With existing experiments
world-leading constraints on this parameter space have been obtained, reaching
the thermal relic benchmark for scalar DM. Future experiments will be able to
reach the thermal relic benchmark for fermionic DM.
|
[{'version': 'v1', 'created': 'Mon, 20 Feb 2023 19:28:59 GMT'}
{'version': 'v2', 'created': 'Fri, 16 Jun 2023 00:39:18 GMT'}]
|
2023-06-19
|
[array(['Dutta', 'Bhaskar', ''], dtype=object)
array(['Huang', 'Wei-Chih', ''], dtype=object)
array(['Newstead', 'Jayden L.', ''], dtype=object)]
|
5,661 |
math-ph/0703081
|
Paolo Facchi
|
M. Asorey, P. Facchi, V.I. Man'ko, G. Marmo, S. Pascazio, E.G.C.
Sudarshan
|
Radon transform on the cylinder and tomography of a particle on the
circle
|
9 pages, 3 figures
|
Phys. Rev. A 76, 012117 (2007)
|
10.1103/PhysRevA.76.012117
| null |
math-ph math.MP
| null |
The tomographic probability distribution on the phase space (cylinder)
related to a circle or an interval is introduced. The explicit relations of the
tomographic probability densities and the probability densities on the phase
space for the particle motion on a torus are obtained and the relation of the
suggested map to the Radon transform on the plane is elucidated. The
generalization to the case of a multidimensional torus is elaborated and the
geometrical meaning of the tomographic probability densities as marginal
distributions on the helix discussed.
|
[{'version': 'v1', 'created': 'Wed, 28 Mar 2007 16:36:15 GMT'}]
|
2010-01-31
|
[array(['Asorey', 'M.', ''], dtype=object)
array(['Facchi', 'P.', ''], dtype=object)
array(["Man'ko", 'V. I.', ''], dtype=object)
array(['Marmo', 'G.', ''], dtype=object)
array(['Pascazio', 'S.', ''], dtype=object)
array(['Sudarshan', 'E. G. C.', ''], dtype=object)]
|
5,662 |
2111.09959
|
Chen Peng
|
Chen Peng
|
Predictive Scheduling of Collaborative Mobile Robots for Improved
Crop-transport Logistics of Manually Harvested Crops
|
PhD Dissertation
| null | null | null |
cs.RO cs.SY eess.SY
|
http://creativecommons.org/licenses/by/4.0/
|
Mechanizing the manual harvesting of fresh market fruits constitutes one of
the biggest challenges to the sustainability of the fruit industry. During
manual harvesting of some fresh-market crops like strawberries and table
grapes, pickers spend significant amounts of time walking to carry full trays
to a collection station at the edge of the field. A step toward increasing
harvest automation for such crops is to deploy harvest-aid collaborative robots
(co-bots) that transport the empty and full trays, thus increasing harvest
efficiency by reducing pickers' non-productive walking times. This work
presents the development of a co-robotic harvest-aid system and its evaluation
during commercial strawberry harvesting. At the heart of the system lies a
predictive stochastic scheduling algorithm that minimizes the expected
non-picking time, thus maximizing the harvest efficiency. During the evaluation
experiments, the co-robots improved the mean harvesting efficiency by around
10% and reduced the mean non-productive time by 60%, when the robot-to-picker
ratio was 1:3. The concepts developed in this work can be applied to robotic
harvest-aids for other manually harvested crops that involve walking for crop
transportation.
|
[{'version': 'v1', 'created': 'Thu, 18 Nov 2021 22:13:24 GMT'}]
|
2021-11-22
|
[array(['Peng', 'Chen', ''], dtype=object)]
|
5,663 |
2208.05147
|
Eric Burkholder
|
Christopher Barua, Eric Burkholder, Gabriel Fragoso, Zsuzsanna
Szaniszlo
|
Analyzing a Graph Theory Game
|
16 pages, 17 figures
| null | null | null |
math.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We are investigating who has the winning strategy in a game in which two
players take turns drawing arrows trying to complete cycle cells in a graph. A
cycle cell is a cycle with no chords. We examine game boards where the winning
strategy was previously unknown. Starting with a $C_{5}$ sharing two
consecutive edges with a $C_{7}$ we solve multiple classes of graphs involving
"stacked" polygons. We then expand upon and improve previous theorems and
conjectures, and offer some new directions of research related to the Game of
Cycles. The original game was described by Francis Su in his book Mathematics
for Human Flourishing. The first results on the game were published in The Game
of Cycles arXiv:arch-ive/04.00776.
|
[{'version': 'v1', 'created': 'Wed, 10 Aug 2022 04:54:40 GMT'}]
|
2022-08-11
|
[array(['Barua', 'Christopher', ''], dtype=object)
array(['Burkholder', 'Eric', ''], dtype=object)
array(['Fragoso', 'Gabriel', ''], dtype=object)
array(['Szaniszlo', 'Zsuzsanna', ''], dtype=object)]
|
5,664 |
2108.05750
|
Davide Lonigro
|
Daniel Burgarth, Paolo Facchi, Davide Lonigro, Kavan Modi
|
Quantum non-Markovianity elusive to interventions
|
10 pages, 3 figures
|
Phys. Rev. A 104, L050404 (2021)
|
10.1103/PhysRevA.104.L050404
| null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The non-Markovian nature of open quantum dynamics lies in the structure of
the multitime correlations, which are accessible by means of interventions.
Here, by examining multitime correlations, we show that it is possible to
engineer non-Markovian systems with only long-term memory but seemingly no
short-term memory, so that their non-Markovianity is completely non-detectable
by any interventions up to an arbitrarily large time. Our results raise the
question about the assessibility of non-Markovianity: in principle,
non-Markovian effects that are perfectly elusive to interventions may emerge at
much later times.
|
[{'version': 'v1', 'created': 'Thu, 12 Aug 2021 13:40:00 GMT'}]
|
2021-11-22
|
[array(['Burgarth', 'Daniel', ''], dtype=object)
array(['Facchi', 'Paolo', ''], dtype=object)
array(['Lonigro', 'Davide', ''], dtype=object)
array(['Modi', 'Kavan', ''], dtype=object)]
|
5,665 |
cond-mat/0008179
|
Haye Hinrichsen
|
Haye Hinrichsen (Duisburg)
|
First order phase transition with a logarithmic singularity in a model
with absorbing states
|
revtex, 4 pages, 5 eps figures
|
Phys. Rev. E 63, 16109 (2001)
|
10.1103/PhysRevE.63.016109
| null |
cond-mat.stat-mech
| null |
Recently, Lipowski [cond-mat/0002378] investigated a stochastic lattice model
which exhibits a discontinuous transition from an active phase into infinitely
many absorbing states. Since the transition is accompanied by an apparent
power-law singularity, it was conjectured that the model may combine features
of first- and second-order phase transitions. In the present work it is shown
that this singularity emerges as an artifact of the definition of the model in
terms of products. Instead of a power law, we find a logarithmic singularity at
the transition. Moreover, we generalize the model in such a way that the
second-order phase transition becomes accessible. As expected, this transition
belongs to the universality class of directed percolation.
|
[{'version': 'v1', 'created': 'Fri, 11 Aug 2000 08:57:31 GMT'}]
|
2009-10-31
|
[array(['Hinrichsen', 'Haye', '', 'Duisburg'], dtype=object)]
|
5,666 |
quant-ph/0206130
|
Dima Shepelyansky
|
G.Benenti, G.Casati, S.Montangero and D.L.Shepelyansky (Univ. of
Insubria, Como and CNRS, Toulouse)
|
Statistical properties of eigenvalues for an operating quantum computer
with static imperfections
|
9 pages, 10 figures
|
Eur. Phys. J. D 22, 285 (2003)
|
10.1140/epjd/e2002-00241-9
| null |
quant-ph cond-mat nlin.CD
| null |
We investigate the transition to quantum chaos, induced by static
imperfections, for an operating quantum computer that simulates efficiently a
dynamical quantum system, the sawtooth map. For the different dynamical regimes
of the map, we discuss the quantum chaos border induced by static imperfections
by analyzing the statistical properties of the quantum computer eigenvalues.
For small imperfection strengths the level spacing statistics is close to the
case of quasi-integrable systems while above the border it is described by the
random matrix theory. We have found that the border drops exponentially with
the number of qubits, both in the ergodic and quasi-integrable dynamical
regimes of the map characterized by a complex phase space structure. On the
contrary, the regime with integrable map dynamics remains more stable against
static imperfections since in this case the border drops only algebraically
with the number of qubits.
|
[{'version': 'v1', 'created': 'Wed, 19 Jun 2002 09:16:10 GMT'}]
|
2007-05-23
|
[array(['Benenti', 'G.', '',
'Univ. of\n Insubria, Como and CNRS, Toulouse'], dtype=object)
array(['Casati', 'G.', '',
'Univ. of\n Insubria, Como and CNRS, Toulouse'], dtype=object)
array(['Montangero', 'S.', '',
'Univ. of\n Insubria, Como and CNRS, Toulouse'], dtype=object)
array(['Shepelyansky', 'D. L.', '',
'Univ. of\n Insubria, Como and CNRS, Toulouse'], dtype=object)]
|
5,667 |
2303.15532
|
Zhiwei Zhou
|
Zhiwei Zhou and Erick Elejalde
|
Stance Inference in Twitter through Graph Convolutional Collaborative
Filtering Networks with Minimal Supervision
| null | null | null | null |
cs.SI
|
http://creativecommons.org/licenses/by/4.0/
|
Social Media (SM) has become a stage for people to share thoughts, emotions,
opinions, and almost every other aspect of their daily lives. This abundance of
human interaction makes SM particularly attractive for social sensing.
Especially during polarizing events such as political elections or referendums,
users post information and encourage others to support their side, using
symbols such as hashtags to represent their attitudes. However, many users
choose not to attach hashtags to their messages, use a different language, or
show their position only indirectly. Thus, automatically identifying their
opinions becomes a more challenging task. To uncover these implicit
perspectives, we propose a collaborative filtering model based on Graph
Convolutional Networks that exploits the textual content in messages and the
rich connections between users and topics. Moreover, our approach only requires
a small annotation effort compared to state-of-the-art solutions. Nevertheless,
the proposed model achieves competitive performance in predicting individuals'
stances. We analyze users' attitudes ahead of two constitutional referendums in
Chile in 2020 and 2022. Using two large Twitter datasets, our model achieves
improvements of 3.4% in recall and 3.6% in accuracy over the baselines.
|
[{'version': 'v1', 'created': 'Mon, 27 Mar 2023 18:14:47 GMT'}
{'version': 'v2', 'created': 'Thu, 30 Mar 2023 16:50:10 GMT'}]
|
2023-03-31
|
[array(['Zhou', 'Zhiwei', ''], dtype=object)
array(['Elejalde', 'Erick', ''], dtype=object)]
|
5,668 |
1610.03404
|
Huazhong Tang
|
Jian Zhao and Huazhong Tang
|
Runge-Kutta discontinuous Galerkin methods for the special relativistic
magnetohydrodynamics
|
53 pages
| null |
10.1016/j.jcp.2017.04.027
| null |
math.NA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This paper develops $P^K$-based non-central and central Runge-Kutta
discontinuous Galerkin (DG) methods with WENO limiter for the one- and
two-dimensional special relativistic magnetohydrodynamical (RMHD) equations,
$K=1,2,3$. The non-central DG methods are locally divergence-free, while the
central DG are "exactly" divergence-free but have to find two approximate
solutions defined on mutually dual meshes. The adaptive WENO limiter first
identifies the "troubled" cells by using a modified TVB minmod function, and
then uses the WENO technique to locally reconstruct a new polynomial of degree
$(2K+1)$ inside the "troubled" cells replacing the DG solution by based on the
cell average values of the DG solutions in the neighboring cells as well as the
original cell averages of the "troubled" cells. The WENO limiting procedure
does not destroy the locally or "exactly" divergence-free property of magnetic
field and is only employed for finite "troubled" cells so that the
computational cost can be as little as possible. Several test problems in one
and two dimensions are solved by using our non-central and central Runge-Kutta
DG methods with WENO limiter. The numerical results demonstrate that our
methods are stable, accurate, and robust in resolving complex wave structures.
|
[{'version': 'v1', 'created': 'Thu, 6 Oct 2016 13:44:53 GMT'}]
|
2017-05-24
|
[array(['Zhao', 'Jian', ''], dtype=object)
array(['Tang', 'Huazhong', ''], dtype=object)]
|
5,669 |
2109.04330
|
Steffen B\"orm
|
Steffen B\"orm
|
On iterated interpolation
| null | null | null | null |
math.NA cs.NA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Matrices resulting from the discretization of a kernel function, e.g., in the
context of integral equations or sampling probability distributions, can
frequently be approximated by interpolation. In order to improve the
efficiency, a multi-level approach can be employed that involves interpolating
the kernel function and its approximations multiple times.
This article presents a new approach to analyze the error incurred by these
iterated interpolation procedures that is considerably more elegant than its
predecessors and allows us to treat not only the kernel function itself, but
also its derivatives.
|
[{'version': 'v1', 'created': 'Thu, 9 Sep 2021 15:08:58 GMT'}
{'version': 'v2', 'created': 'Wed, 8 Dec 2021 20:21:42 GMT'}]
|
2021-12-10
|
[array(['Börm', 'Steffen', ''], dtype=object)]
|
5,670 |
2012.04926
|
Chonghyuk Song
|
Chonghyuk Song, Eunseok Kim, Inwook Shim
|
Improving Gradient Flow with Unrolled Highway Expectation Maximization
|
Accepted at AAAI 2021. Preprint
| null | null | null |
cs.LG cs.CV cs.NE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Integrating model-based machine learning methods into deep neural
architectures allows one to leverage both the expressive power of deep neural
nets and the ability of model-based methods to incorporate domain-specific
knowledge. In particular, many works have employed the expectation maximization
(EM) algorithm in the form of an unrolled layer-wise structure that is jointly
trained with a backbone neural network. However, it is difficult to
discriminatively train the backbone network by backpropagating through the EM
iterations as they are prone to the vanishing gradient problem. To address this
issue, we propose Highway Expectation Maximization Networks (HEMNet), which is
comprised of unrolled iterations of the generalized EM (GEM) algorithm based on
the Newton-Rahpson method. HEMNet features scaled skip connections, or
highways, along the depths of the unrolled architecture, resulting in improved
gradient flow during backpropagation while incurring negligible additional
computation and memory costs compared to standard unrolled EM. Furthermore,
HEMNet preserves the underlying EM procedure, thereby fully retaining the
convergence properties of the original EM algorithm. We achieve significant
improvement in performance on several semantic segmentation benchmarks and
empirically show that HEMNet effectively alleviates gradient decay.
|
[{'version': 'v1', 'created': 'Wed, 9 Dec 2020 09:11:45 GMT'}]
|
2020-12-10
|
[array(['Song', 'Chonghyuk', ''], dtype=object)
array(['Kim', 'Eunseok', ''], dtype=object)
array(['Shim', 'Inwook', ''], dtype=object)]
|
5,671 |
2304.01407
|
Mantas Mikaitis
|
Mantas Mikaitis
|
Monotonicity of Multi-Term Floating-Point Adders
| null | null | null | null |
cs.MS cs.AR cs.NA math.NA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In the literature on algorithms for performing the multi-term addition
$s_n=\sum_{i=1}^n x_i$ using floating-point arithmetic it is often shown that a
hardware unit that has single normalization and rounding improves precision,
area, latency, and power consumption, compared with the use of standard add or
fused multiply-add units. However, non-monotonicity can appear when computing
sums with a subclass of multi-term addition units, which currently is not
explored in the literature. We demonstrate that common techniques for
performing multi-term addition with $n\geq 4$, without normalization of
intermediate quantities, can result in non-monotonicity -- increasing one of
the addends $x_i$ decreases the sum $s_n$. Summation is required in dot product
and matrix multiplication operations, operations that have increasingly started
appearing in the hardware of supercomputers, thus knowing where monotonicity is
preserved can be of interest to the users of these machines. Our results
suggest that non-monotonicity of summation, in some of the commercial hardware
devices that implement a specific class of multi-term adders, is a feature that
may have appeared unintentionally as a consequence of design choices that
reduce circuit area and other metrics. To demonstrate our findings, we use
formal proofs as well as a numerical simulation of non-monotonic multi-term
adders in MATLAB.
|
[{'version': 'v1', 'created': 'Mon, 3 Apr 2023 22:45:14 GMT'}]
|
2023-04-05
|
[array(['Mikaitis', 'Mantas', ''], dtype=object)]
|
5,672 |
1010.6136
|
Allan Sly
|
Sourav Chatterjee, Persi Diaconis, Allan Sly
|
Properties of Uniform Doubly Stochastic Matrices
| null | null | null | null |
math.PR math.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We investigate the properties of uniform doubly stochastic random matrices,
that is non-negative matrices conditioned to have their rows and columns sum to
1. The rescaled marginal distributions are shown to converge to exponential
distributions and indeed even large sub-matrices of side-length
$o(n^{1/2-\epsilon})$ behave like independent exponentials. We determine the
limiting empirical distribution of the singular values the the matrix. Finally
the mixing time of the associated Markov chains is shown to be exactly 2 with
high probability.
|
[{'version': 'v1', 'created': 'Fri, 29 Oct 2010 06:58:54 GMT'}]
|
2010-11-01
|
[array(['Chatterjee', 'Sourav', ''], dtype=object)
array(['Diaconis', 'Persi', ''], dtype=object)
array(['Sly', 'Allan', ''], dtype=object)]
|
5,673 |
1807.00691
|
Elizabeth Denne
|
Elizabeth Denne
|
Folded ribbon knots in the plane
|
12 pages, 10 figures. arXiv admin note: text overlap with
arXiv:1602.08084
| null | null | null |
math.GT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This survey reviews Kauffman's model of folded ribbon knots: knots made of a
thin strip of paper folded flat in the plane. The ribbonlength is the length to
width ratio of such a ribbon, and the ribbonlength problem asks to minimize the
ribbonlength for a given knot type. We give a summary of known results. For the
most part, these are upper bounds of ribbonlength of twist knots and certain
families of torus knots. We discuss result of G. Tian, which give upper bounds
of ribbonlength in terms of crossing number. In addition, it turns out the
choice of fold affects the ribbonlength. We end with a discussion of three
different types of folded ribbon equivalence and give examples illustrating
their relationship to ribbonlength.
|
[{'version': 'v1', 'created': 'Fri, 29 Jun 2018 13:54:20 GMT'}]
|
2018-07-03
|
[array(['Denne', 'Elizabeth', ''], dtype=object)]
|
5,674 |
cond-mat/0312709
|
Cyril Malyshev
|
C. Malyshev
|
A Modified Screw Dislocation With Non-Singular Core of Finite Radius
From Einstein-Like Gauge Equation (Non-Linear Approach)
|
39 pages, LaTeX 2e
| null | null | null |
cond-mat.mtrl-sci gr-qc
| null |
A continual model of non-singular screw dislocation lying along a straight
infinitely long circular cylinder is investigated in the framework of
translational gauge approach with the Hilbert--Einstein gauge Lagrangian. The
stress--strain constitutive law implies the elastic energy of isotropic
continuum which includes the terms of second and third orders in the strain
components. The Einstein-type gauge equation with the elastic stress tensor as
a driving source is investigated perturbatively, and second order contribution
to the stress potential of the modified screw dislocation is obtained. A
stress-free boundary condition is imposed at the cylinder's external surface. A
cut-off of the classical approach which excludes from consideration a tubular
vicinity of the defect's axis is avoided, and the total stress obtained for the
screw dislocation is valid in the whole body. An expression for the radius of
the dislocation's core in terms of the second and third order elastic constants
is obtained.
|
[{'version': 'v1', 'created': 'Tue, 30 Dec 2003 19:00:57 GMT'}]
|
2007-05-23
|
[array(['Malyshev', 'C.', ''], dtype=object)]
|
5,675 |
1002.2750
|
Jonathan Pietarila Graham
|
Jonathan Pietarila Graham, Robert Cameron, and Manfred Schuessler
|
Turbulent small-scale dynamo action in solar surface simulations
|
accepted by ApJ
|
ApJ 714, 1606 (2010)
|
10.1088/0004-637X/714/2/1606
| null |
astro-ph.SR physics.flu-dyn physics.plasm-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We demonstrate that a magneto-convection simulation incorporating essential
physical processes governing solar surface convection exhibits turbulent
small-scale dynamo action. By presenting a derivation of the energy balance
equation and transfer functions for compressible magnetohydrodynamics (MHD), we
quantify the source of magnetic energy on a scale-by-scale basis. We rule out
the two alternative mechanisms for the generation of small-scale magnetic field
in the simulations: the tangling of magnetic field lines associated with the
turbulent cascade and Alfvenization of small-scale velocity fluctuations
("turbulent induction"). Instead, we find the dominant source of small-scale
magnetic energy is stretching by inertial-range fluid motions of small-scale
magnetic field lines against the magnetic tension force to produce (against
Ohmic dissipation) more small-scale magnetic field. The scales involved become
smaller with increasing Reynolds number, which identifies the dynamo as a
small-scale turbulent dynamo.
|
[{'version': 'v1', 'created': 'Sun, 14 Feb 2010 04:35:32 GMT'}
{'version': 'v2', 'created': 'Thu, 15 Apr 2010 10:57:20 GMT'}
{'version': 'v3', 'created': 'Fri, 16 Apr 2010 09:43:51 GMT'}]
|
2010-04-23
|
[array(['Graham', 'Jonathan Pietarila', ''], dtype=object)
array(['Cameron', 'Robert', ''], dtype=object)
array(['Schuessler', 'Manfred', ''], dtype=object)]
|
5,676 |
1409.0654
|
Annalisa Fierro
|
Annalisa Fierro, Sergio Cocozza, Antonella Monticelli, Giovanni Scala
and Gennaro Miele
|
Continuous and Discontinuous Phase Transitions in the evolution of a
polygenic trait under stabilizing selective pressure
|
8 pages, 7 figures, 1 table
| null | null | null |
q-bio.PE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The presence of phenomena analogous to phase transition in Statistical
Mechanics, has been suggested in the evolution of a polygenic trait under
stabilizing selection, mutation and genetic drift.
By using numerical simulations of a model system, we analyze the evolution of
a population of $N$ diploid hermaphrodites in random mating regime. The
population evolves under the effect of drift, selective pressure in form of
viability on an additive polygenic trait, and mutation. The analysis allows to
determine a phase diagram in the plane of mutation rate and strength of
selection. The involved pattern of phase transitions is characterized by a line
of critical points for weak selective pressure (smaller than a threshold),
whereas discontinuous phase transitions, characterized by metastable
hysteresis, are observed for strong selective pressure. A finite size scaling
analysis suggests the analogy between our system and the mean field Ising model
for selective pressure approaching the threshold from weaker values. In this
framework, the mutation rate, which allows the system to explore the accessible
microscopic states, is the parameter controlling the transition from large
heterozygosity (disordered phase) to small heterozygosity (ordered one).
|
[{'version': 'v1', 'created': 'Tue, 2 Sep 2014 10:15:44 GMT'}
{'version': 'v2', 'created': 'Mon, 8 Sep 2014 13:06:03 GMT'}
{'version': 'v3', 'created': 'Fri, 10 Feb 2017 11:26:39 GMT'}]
|
2017-02-13
|
[array(['Fierro', 'Annalisa', ''], dtype=object)
array(['Cocozza', 'Sergio', ''], dtype=object)
array(['Monticelli', 'Antonella', ''], dtype=object)
array(['Scala', 'Giovanni', ''], dtype=object)
array(['Miele', 'Gennaro', ''], dtype=object)]
|
5,677 |
1611.04957
|
Tadeusz Domanski
|
S. Glodzik, K.P. W\'ojcik, I. Weymann, T. Domanski
|
Interplay between electron pairing and Dicke effect in triple quantum
dots structures
|
10 pages, 16 figures
|
Phys. Rev. B 95, 125419 (2017)
|
10.1103/PhysRevB.95.125419
| null |
cond-mat.mes-hall cond-mat.str-el cond-mat.supr-con
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study the influence of the proximity-induced pairing on electronic version
of the Dicke effect in a heterostructure, comprising three quantum dots
vertically coupled between the metallic and superconducting leads. We discuss a
feasible experimental procedure for detecting the narrow/broad
(subradiant/superradiant) contributions by means of the subgap Andreev
spectroscopy. In the Kondo regime and for small energy level detuning the Dicke
effect is manifested in the differential conductance.
|
[{'version': 'v1', 'created': 'Tue, 15 Nov 2016 17:41:30 GMT'}
{'version': 'v2', 'created': 'Mon, 27 Feb 2017 07:08:38 GMT'}]
|
2017-03-16
|
[array(['Glodzik', 'S.', ''], dtype=object)
array(['Wójcik', 'K. P.', ''], dtype=object)
array(['Weymann', 'I.', ''], dtype=object)
array(['Domanski', 'T.', ''], dtype=object)]
|
5,678 |
0811.2764
|
Gabriella Sciolla
|
Gabriella Sciolla (MIT)
|
Directional detection of Dark Matter
|
17 pages, 11 postscript figures, mini-review submitted to Modern
Physics Letters A (MPLA). Submitted to Modern Physics Letters A (MPLA)
|
Mod.Phys.Lett.A24:1793-1809,2009
|
10.1142/S0217732309031569
| null |
astro-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Among the many experimental techniques available, those providing directional
information have the potential of yielding an unambiguous observation of WIMPs
even in the presence of insidious backgrounds. A measurement of the
distribution of arrival direction of WIMPs can also discriminate between
Galactic Dark Matter halo models. In this article, I will discuss the
motivation for directional detectors and review the experimental techniques
used by the various experiments. I will then describe one of them, the DMTPC
detector, in more detail.
|
[{'version': 'v1', 'created': 'Mon, 17 Nov 2008 19:47:14 GMT'}
{'version': 'v2', 'created': 'Tue, 18 Nov 2008 00:04:39 GMT'}
{'version': 'v3', 'created': 'Mon, 13 Jul 2009 21:41:01 GMT'}]
|
2014-11-18
|
[array(['Sciolla', 'Gabriella', '', 'MIT'], dtype=object)]
|
5,679 |
gr-qc/9906021
|
Fredrik Stahl
|
Fredrik St{\aa}hl
|
Degeneracy of the b-boundary in General Relativity
|
25 pages, AMS-LaTeX v1.2, AMSFonts, submitted to Commun. Math. Phys
|
Commun.Math.Phys. 208 (1999) 331-353
|
10.1007/s002200050761
|
Univ. of Umea, Dept. of Mathematics research reports no. 7, 1999
|
gr-qc
| null |
The b-boundary construction by B. Schmidt is a general way of providing a
boundary to a manifold with connection. It has been shown to have undesirable
topological properties however. C. J. S. Clarke gave a result showing that for
space-times, non-Hausdorffness is to be expected in general, but the argument
contains some errors. We show that under somewhat different conditions on the
curvature, the b-boundary will be non-Hausdorff, and illustrate the degeneracy
by applying the conditions to some well known exact solutions of general
relativity.
|
[{'version': 'v1', 'created': 'Sat, 5 Jun 1999 11:31:17 GMT'}]
|
2009-10-31
|
[array(['Ståhl', 'Fredrik', ''], dtype=object)]
|
5,680 |
2303.02271
|
Lingjie Kong
|
Yangxin Zhong, Jiajie He, and Lingjie Kong
|
Double A3C: Deep Reinforcement Learning on OpenAI Gym Games
| null | null | null | null |
cs.AI cs.LG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Reinforcement Learning (RL) is an area of machine learning figuring out how
agents take actions in an unknown environment to maximize its rewards. Unlike
classical Markov Decision Process (MDP) in which agent has full knowledge of
its state, rewards, and transitional probability, reinforcement learning
utilizes exploration and exploitation for the model uncertainty. Under the
condition that the model usually has a large state space, a neural network (NN)
can be used to correlate its input state to its output actions to maximize the
agent's rewards. However, building and training an efficient neural network is
challenging. Inspired by Double Q-learning and Asynchronous Advantage
Actor-Critic (A3C) algorithm, we will propose and implement an improved version
of Double A3C algorithm which utilizing the strength of both algorithms to play
OpenAI Gym Atari 2600 games to beat its benchmarks for our project.
|
[{'version': 'v1', 'created': 'Sat, 4 Mar 2023 00:06:27 GMT'}]
|
2023-03-07
|
[array(['Zhong', 'Yangxin', ''], dtype=object)
array(['He', 'Jiajie', ''], dtype=object)
array(['Kong', 'Lingjie', ''], dtype=object)]
|
5,681 |
2204.08931
|
Arthur Lipstein
|
Connor Armstrong, Humberto Gomez, Renann Lipinski Jusinskas, Arthur
Lipstein, Jiajie Mei
|
Effective Field Theories and Cosmological Scattering Equations
|
v2. minor changes, published in JHEP
|
JHEP08(2022)054
|
10.1007/JHEP08(2022)054
| null |
hep-th
|
http://creativecommons.org/licenses/by/4.0/
|
We propose worldsheet formulae for wavefunction coefficients of the massive
non-linear sigma model (NLSM), scalar Dirac-Born-Infeld (DBI), and special
Galileon (sGal) theories in de Sitter momentum space in terms of the recently
proposed cosmological scattering equations constructed from conformal
generators in the future boundary. The four-point integrands are assembled from
simple building blocks and we identify a double copy prescription mapping the
NLSM wavefunction coefficient to the DBI and sGal wavefunction coefficients,
including mass deformations and curvature corrections. Finally, we compute the
soft limits of these wavefunction coefficients and find that they can be
written in terms of boundary conformal generators acting on contact diagrams.
|
[{'version': 'v1', 'created': 'Tue, 19 Apr 2022 15:00:02 GMT'}
{'version': 'v2', 'created': 'Sun, 7 Aug 2022 21:47:27 GMT'}]
|
2022-08-09
|
[array(['Armstrong', 'Connor', ''], dtype=object)
array(['Gomez', 'Humberto', ''], dtype=object)
array(['Jusinskas', 'Renann Lipinski', ''], dtype=object)
array(['Lipstein', 'Arthur', ''], dtype=object)
array(['Mei', 'Jiajie', ''], dtype=object)]
|
5,682 |
hep-ph/0102074
|
Brenna Flaugher
|
T. Affolder, et al. (CDF Collaboration)
|
Measurement of the Inclusive Jet Cross Section in ${\bar p p}$
collisions at $\sqrt{s}=1.8$ TeV
|
123 pages, 46 figures
|
Phys.Rev.D64:032001,2001; Erratum-ibid.D65:039903,2002
|
10.1103/PhysRevD.64.032001 10.1103/PhysRevD.65.039903
|
fnal-pub-01/008-E
|
hep-ph hep-ex
| null |
We present results from the measurement of the inclusive jet cross section
for jet transverse energies from 40 to 465 GeV in the pseudo-rapidity range
$0.1<|\eta|<0.7$. The results are based on 87 $pb^{-1}$ of data collected by
the CDF collaboration at the Fermilab Tevatron Collider. The data are
consistent with previously published results. The data are also consistent with
QCD predictions given the flexibility allowed from current knowledge of the
proton parton distributions. We develop a new procedure for ranking the
agreement of the parton distributions with data and find that the data are best
described by QCD predictions using the parton distribution functions which have
a large gluon contribution at high $E_T$ (CTEQ4HJ).
|
[{'version': 'v1', 'created': 'Tue, 6 Feb 2001 23:05:13 GMT'}]
|
2014-11-17
|
[array(['Affolder', 'T.', ''], dtype=object)]
|
5,683 |
1905.12545
|
Konstanze Zwintz
|
K. Zwintz, D. R. Reese, C. Neiner, A. Pigulski, R. Kuschnig, M.
Muellner, S. Zieba, L. Abe, T. Guillot, G. Handler, M. Kenworthy, R. Stuik,
A. F. J. Moffat, A. Popowicz, S. M. Rucinski, G. A. Wade, W. W. Weiss, J. I.
Bailey III, S. Crawford, M. Ireland, R. Kuhn, B. Lomberg, E. E. Mamajek, S.
N. Mellon, G. J. Talens
|
Revisiting the pulsational characteristics of the exoplanet host star
$\beta$ Pictoris
|
26 pages, 19 figures, accepted in Astronomy & Astrophysics
|
A&A 627, A28 (2019)
|
10.1051/0004-6361/201834744
| null |
astro-ph.SR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Exoplanet properties crucially depend on their host stars' parameters. In
case the exoplanet host star shows pulsations, asteroseismology can be used for
an improved description of the stellar parameters. We aim to revisit the
pulsational properties of beta Pic and identify its pulsation modes from
normalised amplitudes in five different passbands. We also investigate the
potential presence of a magnetic field. We conduct a frequency analysis using
three seasons of BRITE-Constellation observations in the BRITE blue and red
filters, the ~620-day long bRing light curve and the nearly 8-year long SMEI
photometric time series. We calculate normalised amplitudes using all passbands
including previously published values obtained from ASTEP observations. We
investigate the magnetic properties of beta Pic using spectropolarimetric
observations conducted with the HARPSpol instrument. Using 2D rotating models,
we fit the normalised amplitudes and frequencies through Monte Carlo Markov
Chains. We identify 15 pulsation frequencies in the range from 34 to 55c/d,
where two display clear amplitude variability. We use the normalised amplitudes
in up to five passbands to identify the modes as three l = 1, six l = 2 and six
l = 3 modes. beta Pic is shown to be non-magnetic with an upper limit of the
possible undetected dipolar field of 300G. Multiple fits to the frequencies and
normalised amplitudes are obtained including one with a near equator-on
inclination for beta Pic, which corresponds to our expectations based on the
orbital inclination of beta Pic b and the orientation of the circumstellar
disk. This solution leads to a rotation rate of 27% of the Keplerian break-up
velocity, a radius of 1.497+-0.025Rsun, and a mass of 1.797+-0.035Msun. The ~2%
errors in radius and mass do not account for uncertainties in the models and a
potentially erroneous mode-identification.
|
[{'version': 'v1', 'created': 'Wed, 29 May 2019 15:50:01 GMT'}]
|
2019-07-03
|
[array(['Zwintz', 'K.', ''], dtype=object)
array(['Reese', 'D. R.', ''], dtype=object)
array(['Neiner', 'C.', ''], dtype=object)
array(['Pigulski', 'A.', ''], dtype=object)
array(['Kuschnig', 'R.', ''], dtype=object)
array(['Muellner', 'M.', ''], dtype=object)
array(['Zieba', 'S.', ''], dtype=object)
array(['Abe', 'L.', ''], dtype=object)
array(['Guillot', 'T.', ''], dtype=object)
array(['Handler', 'G.', ''], dtype=object)
array(['Kenworthy', 'M.', ''], dtype=object)
array(['Stuik', 'R.', ''], dtype=object)
array(['Moffat', 'A. F. J.', ''], dtype=object)
array(['Popowicz', 'A.', ''], dtype=object)
array(['Rucinski', 'S. M.', ''], dtype=object)
array(['Wade', 'G. A.', ''], dtype=object)
array(['Weiss', 'W. W.', ''], dtype=object)
array(['Bailey', 'J. I.', 'III'], dtype=object)
array(['Crawford', 'S.', ''], dtype=object)
array(['Ireland', 'M.', ''], dtype=object)
array(['Kuhn', 'R.', ''], dtype=object)
array(['Lomberg', 'B.', ''], dtype=object)
array(['Mamajek', 'E. E.', ''], dtype=object)
array(['Mellon', 'S. N.', ''], dtype=object)
array(['Talens', 'G. J.', ''], dtype=object)]
|
5,684 |
astro-ph/0010205
|
Hume A. Feldman
|
Hume A. Feldman (Kansas) Joshua A. Frieman (Fermilab), J. N. Fry
(Florida) & Roman Scoccimarro (IAS)
|
Constraints on Galaxy Bias, Matter Density, and Primordial
Non--Gausianity from the PSCz Galaxy Redshift Survey
|
4 pages, 3 embedded figures, uses revtex style file, minor changes to
reflect published version
|
Phys.Rev.Lett. 86 (2001) 1434
|
10.1103/PhysRevLett.86.1434
| null |
astro-ph
| null |
We compute the bispectrum for the \IRAS PSCz catalog and find that the galaxy
distribution displays the characteristic signature of gravity. Assuming
Gaussian initial conditions, we obtain galaxy biasing parameters
$1/b_1=1.20^{+0.18}_{-0.19}$ and $b_2/b_1^2=-0.42\pm0.19$, with no sign of
scale-dependent bias for $k\leq 0.3$ h/Mpc. These results impose stringent
constraints on non-Gaussian initial conditions. For dimensional scaling models
with $\chi^2_N$ statistics, we find N>49, which implies a constraint on
primordial skewness $B_3<0.35$.
|
[{'version': 'v1', 'created': 'Tue, 10 Oct 2000 23:02:28 GMT'}
{'version': 'v2', 'created': 'Wed, 4 Apr 2001 15:19:51 GMT'}]
|
2009-10-31
|
[array(['Feldman', 'Hume A.', '', 'Kansas'], dtype=object)
array(['Frieman', 'Joshua A.', '', 'Fermilab'], dtype=object)
array(['Fry', 'J. N.', '', 'Florida'], dtype=object)
array(['Scoccimarro', 'Roman', '', 'IAS'], dtype=object)]
|
5,685 |
1007.5258
|
\'Alvaro S\'anchez-Monge
|
Alvaro Sanchez-Monge, Aina Palau, Robert Estalella, Stan Kurtz, Qizhou
Zhang, James Di Francesco and Debra Shepherd
|
IRAS 22198+6336: Discovery of an Intermediate-Mass Hot Core
|
Accepted for publication in The Astrophysical Journal Letters [5
pages, 4 figures, 1 table]
| null |
10.1088/2041-8205/721/2/L107
| null |
astro-ph.GA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present new SMA and PdBI observations of the intermediate-mass object IRAS
22198+6336 in the millimeter continuum and in several molecular line
transitions. The millimeter continuum emission reveals a strong and compact
source with a mass of around 5 Msun and with properties of Class 0 objects. CO
emission shows an outflow with a quadrupolar morphology centered on the
position of the dust condensation. The CO outflow emission seems to come from
two distinct outflows, one of them associated with SiO outflow emission. A
large set of molecular lines has been detected toward a compact dense core
clearly coincident with the compact millimeter source, and showing a velocity
gradient perpendicular to the outflow traced by CO and SiO. The chemically rich
spectrum and the rotational temperatures derived from CH$_3$CN and CH$_3$OH
(100-150 K) indicate that IRAS 22198+6336 is harbouring one the few
intermediate-mass hot cores known at present.
|
[{'version': 'v1', 'created': 'Thu, 29 Jul 2010 16:29:09 GMT'}
{'version': 'v2', 'created': 'Sat, 31 Jul 2010 21:08:16 GMT'}]
|
2015-05-19
|
[array(['Sanchez-Monge', 'Alvaro', ''], dtype=object)
array(['Palau', 'Aina', ''], dtype=object)
array(['Estalella', 'Robert', ''], dtype=object)
array(['Kurtz', 'Stan', ''], dtype=object)
array(['Zhang', 'Qizhou', ''], dtype=object)
array(['Di Francesco', 'James', ''], dtype=object)
array(['Shepherd', 'Debra', ''], dtype=object)]
|
5,686 |
2105.02035
|
Juan Pablo Madrigal Cianci
|
Juan Pablo Madrigal-Cianci, Fabio Nobile, Raul Tempone
|
Analysis of a class of Multi-Level Markov Chain Monte Carlo algorithms
based on Independent Metropolis-Hastings
| null | null | null | null |
math.NA cs.NA
|
http://creativecommons.org/licenses/by/4.0/
|
In this work, we present, analyze, and implement a class of Multi-Level
Markov chain Monte Carlo (ML-MCMC) algorithms based on independent
Metropolis-Hastings proposals for Bayesian inverse problems. In this context,
the likelihood function involves solving a complex differential model, which is
then approximated on a sequence of increasingly accurate discretizations. The
key point of this algorithm is to construct highly coupled Markov chains
together with the standard Multi-level Monte Carlo argument to obtain a better
cost-tolerance complexity than a single-level MCMC algorithm. Our method
extends the ideas of Dodwell, et al. "A hierarchical multilevel Markov chain
Monte Carlo algorithm with applications to uncertainty quantification in
subsurface flow," \textit{SIAM/ASA Journal on Uncertainty Quantification 3.1
(2015): 1075-1108,} to a wider range of proposal distributions. We present a
thorough convergence analysis of the ML-MCMC method proposed, and show, in
particular, that (i) under some mild conditions on the (independent) proposals
and the family of posteriors, there exists a unique invariant probability
measure for the coupled chains generated by our method, and (ii) that such
coupled chains are uniformly ergodic. We also generalize the cost-tolerance
theorem of Dodwell et al., to our wider class of ML-MCMC algorithms. Finally,
we propose a self-tuning continuation-type ML-MCMC algorithm (C-ML-MCMC). The
presented method is tested on an array of academic examples, where some of our
theoretical results are numerically verified. These numerical experiments
evidence how our extended ML-MCMC method is robust when targeting some
\emph{pathological} posteriors, for which some of the previously proposed
ML-MCMC algorithms fail.
|
[{'version': 'v1', 'created': 'Wed, 5 May 2021 13:07:48 GMT'}]
|
2021-05-06
|
[array(['Madrigal-Cianci', 'Juan Pablo', ''], dtype=object)
array(['Nobile', 'Fabio', ''], dtype=object)
array(['Tempone', 'Raul', ''], dtype=object)]
|
5,687 |
0911.3483
|
Harald Haakh
|
H. Haakh, F. Intravaia, C. Henkel
|
Thermal effects in the magnetic Casimir-Polder interaction
| null | null |
10.1142/9789814289931_0021
| null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We investigate the magnetic dipole coupling between a metallic surface and an
atom in a thermal state, ground state and excited hyperine state. This
interaction results in a repulsive correction and - unlike the electrical
dipole contribution - depends sensitively on the Ohmic dissipation in the
material.
|
[{'version': 'v1', 'created': 'Wed, 18 Nov 2009 08:55:05 GMT'}]
|
2016-05-17
|
[array(['Haakh', 'H.', ''], dtype=object)
array(['Intravaia', 'F.', ''], dtype=object)
array(['Henkel', 'C.', ''], dtype=object)]
|
5,688 |
1108.2690
|
Max Jauregui
|
M. Jauregui, C. Tsallis and E.M.F. Curado
|
q-Moments remove the degeneracy associated with the inversion of the
q-Fourier transform
|
11 pages, 12 figures
|
J. Stat. Mech. (2011) P10016
|
10.1088/1742-5468/2011/10/P10016
| null |
math-ph cond-mat.stat-mech math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
It was recently proven [Hilhorst, JSTAT, P10023 (2010)] that the
q-generalization of the Fourier transform is not invertible in the full space
of probability density functions for q > 1. It has also been recently shown
that this complication disappears if we dispose of the q-Fourier transform not
only of the function itself, but also of all of its shifts [Jauregui and
Tsallis, Phys. Lett. A 375, 2085 (2011)]. Here we show that another road exists
for completely removing the degeneracy associated with the inversion of the
q-Fourier transform of a given probability density function. Indeed, it is
possible to determine this density if we dispose of some extra information
related to its q-moments.
|
[{'version': 'v1', 'created': 'Fri, 12 Aug 2011 19:12:56 GMT'}]
|
2011-10-18
|
[array(['Jauregui', 'M.', ''], dtype=object)
array(['Tsallis', 'C.', ''], dtype=object)
array(['Curado', 'E. M. F.', ''], dtype=object)]
|
5,689 |
1711.04547
|
Ivica Martinjak
|
Ivica Martinjak, Riste \v{S}krekovski
|
Lah numbers and Lindstr\"om's lemma
|
4 pages, 1 figure
| null | null | null |
math.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We provide a combinatorial interpretation of Lah numbers by means of planar
networks. Henceforth, as a conesquence of Lindstr\"om's lemma, we conclude that
the related Lah matrix possesses a remarkable property of total non-negativity.
|
[{'version': 'v1', 'created': 'Mon, 13 Nov 2017 12:15:25 GMT'}]
|
2017-11-15
|
[array(['Martinjak', 'Ivica', ''], dtype=object)
array(['Škrekovski', 'Riste', ''], dtype=object)]
|
5,690 |
1609.00563
|
I. M. Verloop
|
I. M. Verloop
|
Asymptotically optimal priority policies for indexable and nonindexable
restless bandits
|
Published at http://dx.doi.org/10.1214/15-AAP1137 in the Annals of
Applied Probability (http://www.imstat.org/aap/) by the Institute of
Mathematical Statistics (http://www.imstat.org)
|
Annals of Applied Probability 2016, Vol. 26, No. 4, 1947-1995
|
10.1214/15-AAP1137
|
IMS-AAP-AAP1137
|
math.PR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study the asymptotic optimal control of multi-class restless bandits. A
restless bandit is a controllable stochastic process whose state evolution
depends on whether or not the bandit is made active. Since finding the optimal
control is typically intractable, we propose a class of priority policies that
are proved to be asymptotically optimal under a global attractor property and a
technical condition. We consider both a fixed population of bandits as well as
a dynamic population where bandits can depart and arrive. As an example of a
dynamic population of bandits, we analyze a multi-class $\mathit{M/M/S+M}$
queue for which we show asymptotic optimality of an index policy. We combine
fluid-scaling techniques with linear programming results to prove that when
bandits are indexable, Whittle's index policy is included in our class of
priority policies. We thereby generalize a result of Weber and Weiss [J. Appl.
Probab. 27 (1990) 637-648] about asymptotic optimality of Whittle's index
policy to settings with (i) several classes of bandits, (ii) arrivals of new
bandits and (iii) multiple actions. Indexability of the bandits is not required
for our results to hold. For nonindexable bandits, we describe how to select
priority policies from the class of asymptotically optimal policies and present
numerical evidence that, outside the asymptotic regime, the performance of our
proposed priority policies is nearly optimal.
|
[{'version': 'v1', 'created': 'Fri, 2 Sep 2016 11:53:12 GMT'}]
|
2016-09-05
|
[array(['Verloop', 'I. M.', ''], dtype=object)]
|
5,691 |
1511.04311
|
Nicholas Keeley
|
N. Keeley, K. W. Kemper and K. Rusek
|
Strong Multi-step Interference Effects in 12C(d,p) to the 9/2+ State in
13C
|
Accepted for publication in Phys. Rev. C
|
Phys. Rev. C 92, 054618 (2015)
|
10.1103/PhysRevC.92.054618
| null |
nucl-ex nucl-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The population of the 9.50 MeV 9/2+ resonance in 13C by single neutron
transfer reactions is expected to be dominated by the two-step route through
the 12C 2+ (4.44 MeV) state, with another possible contribution via the
strongly excited 3- (9.64 MeV) resonance in 12C. However, we find that a good
description of the angular distribution for population of this state via the
12C(d,p)13C reaction is only possible when both direct 0+ x g_9/2 and two-step
(via the 4.44 MeV 12C 2+ state) 2+ x d_5/2 paths are included in a coupled
reaction channel calculation. While the calculated angular distribution is
almost insensitive to the presence of the two-step path via the 9.64 MeV 12C 3-
resonance, despite a much greater contribution to the wave function from the 3-
x f_7/2 configuration, its inclusion is required to fit the details of the
experimental angular distribution. The very large interference between the
various components of the calculations, even when these are small, arises
through the ``kinematic'' effect associated with the different transfer routes.
|
[{'version': 'v1', 'created': 'Fri, 13 Nov 2015 15:23:08 GMT'}]
|
2018-05-24
|
[array(['Keeley', 'N.', ''], dtype=object)
array(['Kemper', 'K. W.', ''], dtype=object)
array(['Rusek', 'K.', ''], dtype=object)]
|
5,692 |
0907.0339
|
Ralf Meyer
|
Alcides Buss, Chenchang Zhu, Ralf Meyer
|
Non-Hausdorff Symmetries of C*-algebras
|
very minor changes. To appear in Math. Ann
|
Math. Ann. 352 (2011), 73-97
|
10.1007/s00208-010-0630-3
| null |
math.OA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Symmetry groups or groupoids of C*-algebras associated to non-Hausdorff
spaces are often non-Hausdorff as well. We describe such symmetries using
crossed modules of groupoids. We define actions of crossed modules on
C*-algebras and crossed products for such actions, and justify these
definitions with some basic general results and examples.
|
[{'version': 'v1', 'created': 'Thu, 2 Jul 2009 10:48:37 GMT'}
{'version': 'v2', 'created': 'Thu, 3 Dec 2009 21:08:52 GMT'}]
|
2012-06-29
|
[array(['Buss', 'Alcides', ''], dtype=object)
array(['Zhu', 'Chenchang', ''], dtype=object)
array(['Meyer', 'Ralf', ''], dtype=object)]
|
5,693 |
1705.02825
|
Denise Erb
|
Denise Erb, Kai Schlage, Lars Bocklage, Ren\'e H\"ubner, Daniel Geza
Merkel, Rudolf R\"uffer, Hans-Christian Wille, Ralf R\"ohlsberger
|
Disentangling magnetic order on nanostructured surfaces
| null |
Phys. Rev. Materials 1, 023001 (2017)
|
10.1103/PhysRevMaterials.1.023001
| null |
cond-mat.mes-hall
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present a synchrotron-based X-ray scattering technique which allows
disentangling magnetic properties of heterogeneous systems with nanopatterned
surfaces. This technique combines the nmrange spatial resolution of surface
morphology features provided by Grazing Incidence Small Angle X-ray Scattering
and the high sensitivity of Nuclear Resonant Scattering to magnetic order. A
single experiment thus allows attributing magnetic properties to structural
features of the sample; chemical and structural properties may be correlated
analogously. We demonstrate how this technique shows the correlation between
structural growth and evolution of magnetic properties for the case of a
remarkable magnetization reversal in a structurally and magnetically
nanopatterned sample system.
|
[{'version': 'v1', 'created': 'Mon, 8 May 2017 11:03:41 GMT'}
{'version': 'v2', 'created': 'Thu, 6 Jul 2017 15:23:58 GMT'}]
|
2017-07-26
|
[array(['Erb', 'Denise', ''], dtype=object)
array(['Schlage', 'Kai', ''], dtype=object)
array(['Bocklage', 'Lars', ''], dtype=object)
array(['Hübner', 'René', ''], dtype=object)
array(['Merkel', 'Daniel Geza', ''], dtype=object)
array(['Rüffer', 'Rudolf', ''], dtype=object)
array(['Wille', 'Hans-Christian', ''], dtype=object)
array(['Röhlsberger', 'Ralf', ''], dtype=object)]
|
5,694 |
1608.04102
|
Mohammad Nakhaee
|
Mohammad Nakhaee, S Ahmad Ketabi
|
Polymer as a function of monomer: Analytical quantum modeling
| null | null | null | null |
cond-mat.mes-hall physics.atm-clus physics.chem-ph physics.comp-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
To identify an analytical relation between the properties of polymers and
their's monomer a Metal-Molecule-Metal (MMM) junction has been presented as an
interesting and widely used object of research in which the molecule is a
polymer which is able to conduct charge. The method used in this study is based
on the Green's function approach in the tight-binding approximation using basic
properties of matrices. For a polymer base MMM system, transmission, density of
states (DOS) and local density of states (LDOS) have been calculated as a
function of the hamiltonian of the monomer. After that, we have obtained a
frequency for LDOS variations in pass from a subunit to the next one which is a
function of energy.
|
[{'version': 'v1', 'created': 'Sun, 14 Aug 2016 13:30:36 GMT'}]
|
2016-08-16
|
[array(['Nakhaee', 'Mohammad', ''], dtype=object)
array(['Ketabi', 'S Ahmad', ''], dtype=object)]
|
5,695 |
1505.04533
|
Thorsten Tarrach
|
Pavol \v{C}ern\'y, Edmund M. Clarke, Thomas A. Henzinger, Arjun
Radhakrishna, Leonid Ryzhyk, Roopsha Samanta, Thorsten Tarrach
|
From Non-preemptive to Preemptive Scheduling using Synchronization
Synthesis
|
Liss is published as open-source at
https://github.com/thorstent/Liss, Computer Aided Verification 2015
| null | null | null |
cs.PL
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present a computer-aided programming approach to concurrency. The approach
allows programmers to program assuming a friendly, non-preemptive scheduler,
and our synthesis procedure inserts synchronization to ensure that the final
program works even with a preemptive scheduler. The correctness specification
is implicit, inferred from the non-preemptive behavior. Let us consider
sequences of calls that the program makes to an external interface. The
specification requires that any such sequence produced under a preemptive
scheduler should be included in the set of such sequences produced under a
non-preemptive scheduler. The solution is based on a finitary abstraction, an
algorithm for bounded language inclusion modulo an independence relation, and
rules for inserting synchronization. We apply the approach to device-driver
programming, where the driver threads call the software interface of the device
and the API provided by the operating system. Our experiments demonstrate that
our synthesis method is precise and efficient, and, since it does not require
explicit specifications, is more practical than the conventional approach based
on user-provided assertions.
|
[{'version': 'v1', 'created': 'Mon, 18 May 2015 07:25:17 GMT'}]
|
2015-05-19
|
[array(['Černý', 'Pavol', ''], dtype=object)
array(['Clarke', 'Edmund M.', ''], dtype=object)
array(['Henzinger', 'Thomas A.', ''], dtype=object)
array(['Radhakrishna', 'Arjun', ''], dtype=object)
array(['Ryzhyk', 'Leonid', ''], dtype=object)
array(['Samanta', 'Roopsha', ''], dtype=object)
array(['Tarrach', 'Thorsten', ''], dtype=object)]
|
5,696 |
1706.06845
|
Rasmus Kr{\ae}mmer Rendsvig
|
Dominik Klein and Rasmus K. Rendsvig
|
Turing Completeness of Finite, Epistemic Programs
| null | null | null | null |
cs.FL cs.LO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this note, we show the class of finite, epistemic programs to be Turing
complete. Epistemic programs is a widely used update mechanism used in
epistemic logic, where it such are a special type of action models: One which
does not contain postconditions.
|
[{'version': 'v1', 'created': 'Wed, 21 Jun 2017 11:56:38 GMT'}]
|
2017-06-22
|
[array(['Klein', 'Dominik', ''], dtype=object)
array(['Rendsvig', 'Rasmus K.', ''], dtype=object)]
|
5,697 |
1209.2666
|
Benjamin Oberhof
|
Benjamin Oberhof (for the BaBar Collaboration)
|
Search for low-mass Higgs and dark bosons at BaBar
|
4 pages, 7 figures, Proceeding to QCD 2012 conference
| null |
10.1016/j.nuclphysbps.2012.11.009
| null |
hep-ex
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
I present BaBar latest results for the direct search of a light CP-odd Higgs
boson using radiative decays of the Y(nS) (n=1,2,3) resonances in different
final states. I also present the results for the search of a hidden sector
gauge and Higgs bosons using the full BaBar datasample.
|
[{'version': 'v1', 'created': 'Wed, 12 Sep 2012 17:00:58 GMT'}]
|
2019-08-13
|
[array(['Oberhof', 'Benjamin', '', 'for the BaBar Collaboration'],
dtype=object) ]
|
5,698 |
1310.8215
|
David Bailin
|
David Bailin and Alex Love
|
Intersecting D6-branes on the Z_{12}-II orientifold
|
Slightly revised version to be published in JHEP, 24 pages
| null |
10.1007/JHEP01(2014)009
| null |
hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Much work has been done by a number of authors with the aim of constructing
the supersymmetric Standard Model in type IIA intersecting-brane theories
compactified on an orientifold with various Z_N or Z_M x Z_N point groups. Here
we consider the Z_{12} point group which has previously received comparatively
little attention. We consider intersecting D6-branes that wrap 3-cycles
consisting of a 2-cycle of the 4-dimensional lattice upon which the Z_{12} is
realised times a 1-cycle of the remaining 2-torus. Our discussion is restricted
to the case when these 2-cycles are "factorisable" in the sense discussed in
section 3. Although it is possible to find models with the correct
supersymmetric Standard Model quark-doublet content, we have not found it
possible to obtain the correct quark-singlet content.
|
[{'version': 'v1', 'created': 'Wed, 30 Oct 2013 16:16:30 GMT'}
{'version': 'v2', 'created': 'Mon, 4 Nov 2013 11:49:07 GMT'}
{'version': 'v3', 'created': 'Fri, 8 Nov 2013 11:26:34 GMT'}
{'version': 'v4', 'created': 'Mon, 6 Jan 2014 14:24:04 GMT'}]
|
2015-06-17
|
[array(['Bailin', 'David', ''], dtype=object)
array(['Love', 'Alex', ''], dtype=object)]
|
5,699 |
hep-ph/0108221
|
Michael Melles
|
Michael Melles
|
Resummation of angular dependent corrections in spontaneously broken
gauge theories
|
22 pages, 3 eps-figures, uses LaTeX2e
|
Eur.Phys.J.C24:193-204,2002
|
10.1007/s100520200942
|
PSI-PR-01-11
|
hep-ph
| null |
Recent investigations of electroweak radiative corrections have revealed the
importance of higher order contributions in high energy processes, where the
size of typical corrections can exceed those associated with QCD considerably.
Beyond one loop, only universal (angular independent) corrections are known to
all orders except for massless $e^+ e^- \longrightarrow f {\overline f}$
processes where also angular dependent corrections exist in the literature. In
this paper we present general arguments for the consistent resummation of
angular dependent subleading (SL) logarithmic corrections to all orders in the
regime where all invariants are still large compared to the gauge boson masses.
We discuss soft isospin correlations, fermion mass and gauge boson mass gap
effects, the longitudinal and Higgs boson sector as well as mixing
contributions including CKM effects for massive quarks. Two loop arguments are
interpreted in the context of the effective high energy effective theory based
on the Standard Model Lagrangian in the symmetric basis with the appropriate
matching conditions to include the soft QED regime. The result is expressed in
exponentiated operator form in a CKM-extended isospin space in the symmetric
basis. Thus, a full electroweak SL treatment based on the infrared evolution
equation method is formulated for arbitrary high energy processes at future
colliders. Comparisons with known results are presented.
|
[{'version': 'v1', 'created': 'Mon, 27 Aug 2001 13:14:44 GMT'}]
|
2011-09-13
|
[array(['Melles', 'Michael', ''], dtype=object)]
|
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.