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|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
5,200 |
1210.7619
|
Cms Collaboration
|
CMS Collaboration
|
Search for a non-standard-model Higgs boson decaying to a pair of new
light bosons in four-muon final states
|
Replaced with published version. Added journal reference and DOI
|
Phys. Lett. B 726 (2013) 564
|
10.1016/j.physletb.2013.09.009
|
CMS-EXO-12-012; CERN-PH-EP-2012-292
|
hep-ex
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Results are reported from a search for non-standard-model Higgs boson decays
to pairs of new light bosons, each of which decays into the oppositely charged
dimuon final state. The new bosons may be produced either promptly or via a
decay chain. The data set corresponds to an integrated luminosity of 5.3
inverse femtobarns of proton-proton collisions at sqrt(s) = 7 TeV, recorded by
the CMS experiment at the LHC in 2011. Such Higgs boson decays are predicted in
several scenarios of new physics, including supersymmetric models with extended
Higgs sectors or hidden valleys. Thus, the results of the search are relevant
for establishing whether the new particle observed in Higgs boson searches at
the LHC has the properties expected for a standard model Higgs boson. No excess
of events is observed with respect to the yields expected from standard model
processes. A model-independent upper limit of 0.86 +/- 0.06 fb on the product
of the cross section times branching fraction times acceptance is obtained. The
results, which are applicable to a broad spectrum of models, are compared with
the predictions of two benchmark scenarios as functions of a Higgs boson mass
larger than 86 GeV and of a new light boson mass within the range 0.25-3.55
GeV.
|
[{'version': 'v1', 'created': 'Mon, 29 Oct 2012 11:02:57 GMT'}
{'version': 'v2', 'created': 'Fri, 8 Nov 2013 20:24:24 GMT'}]
|
2013-11-11
|
[array(['CMS Collaboration', '', ''], dtype=object)]
|
5,201 |
hep-ph/9907468
|
Hrvoje Stefancic
|
B. Guberina, B. Melic and H. Stefancic
|
Enhancement of preasymptotic effects in inclusive beauty decays
|
Latex2e, 12 pages, 3 eps figures included
|
Phys.Lett. B469 (1999) 253-258
|
10.1016/S0370-2693(99)01198-3
|
IRB-TH-4/99
|
hep-ph
| null |
We extend Voloshin's recent analysis of charmed and beauty hyperon decays
based on SU(3) symmetry and heavy quark effective theory, by introducing a
rather moderate model-dependence, in order to obtain more predictive power,
e.g. the values of lifetimes of the (\Lambda_{b},\Xi_{b}) hyperon triplet and
the lifetime of \Omega_{b}. In this way we obtain an improvement of the ratio
\tau(\Lambda_{b})/\tau(B_{d}^{0}) \sim 0.9 and the hierarchy of lifetimes
\tau(\Lambda_{b}) \simeq \tau(\Xi_{b}^{0}) < \tau(\Xi_{b}^{-}) <
\tau(\Omega_{b}) with lifetimes of \Xi_{b}^{-} and \Omega_{b} exceeding the
lifetime of \Lambda_{b} by 22% and 35%, respectively.
|
[{'version': 'v1', 'created': 'Fri, 23 Jul 1999 11:53:57 GMT'}]
|
2009-10-31
|
[array(['Guberina', 'B.', ''], dtype=object)
array(['Melic', 'B.', ''], dtype=object)
array(['Stefancic', 'H.', ''], dtype=object)]
|
5,202 |
1402.6023
|
BaoChun Li
|
Bao-Chun Li, Ya-Zhou Wang and Fu-Hu Liu
|
Formulation of transverse mass distributions in Au-Au collisions at 200
GeV/nucleon
|
8 pages, 11 figures
|
Physics Letters B, 725(2013),352
|
10.1016/j.physletb.2013.07.043
| null |
hep-ph hep-ex nucl-ex nucl-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The transverse mass spectra of light mesons produced in Au-Au collisions at
200 GeV/nucleon are analyzed in Tsallis statistics. In high energy collisions,
it has been found that the spectra follow a generalized scaling law. We applied
Tsallis statistics to the description of different particles using the scaling
properties. The calculated results are in agreement with experimental data of
PHENIX Collaboration. And, the temperature of emission sources is extracted
consistently.
|
[{'version': 'v1', 'created': 'Tue, 25 Feb 2014 00:22:55 GMT'}]
|
2016-11-25
|
[array(['Li', 'Bao-Chun', ''], dtype=object)
array(['Wang', 'Ya-Zhou', ''], dtype=object)
array(['Liu', 'Fu-Hu', ''], dtype=object)]
|
5,203 |
hep-ph/0703270
|
Xiao-Gang He
|
Xiao-Gang He, German Valencia
|
$D-\bar{D}$ mixing constraints on FCNC with a non-universal $Z^\prime$
|
RevTex, 10 pages, 1 figure. Several typoes corrected
|
Phys.Lett.B651:135-138,2007
|
10.1016/j.physletb.2007.06.007
| null |
hep-ph hep-ex
| null |
The BaBar and Belle collaborations have recently reported evidence for
$D^0-\bar D^0$ mixing. This measurement provides the first significant
constraint on FCNC in the up-quark sector for non-universal $Z^\prime$ models.
Attributing the observed $D-\bar D$ mixing to new physics, we comment on the
resulting rare $D$ and $t$ decays. We also show that a CP violating
semileptonic asymmetry as large as $\sim 30%$ is allowed by the experimental
results.
|
[{'version': 'v1', 'created': 'Mon, 26 Mar 2007 02:12:34 GMT'}
{'version': 'v2', 'created': 'Tue, 10 Apr 2007 04:45:38 GMT'}
{'version': 'v3', 'created': 'Tue, 5 Jun 2007 00:02:50 GMT'}]
|
2008-11-26
|
[array(['He', 'Xiao-Gang', ''], dtype=object)
array(['Valencia', 'German', ''], dtype=object)]
|
5,204 |
1004.1701
|
Jos Spaan
|
Jos AE Spaan
|
The danger of pseudo science in Informetrics
| null | null | null | null |
cs.DL physics.pop-ph physics.soc-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Two papers have been archived to which this letter is complementary: 1)
Opthof and Leydesdorff arxiv:1002.2769 2) Van Raan et al. arxiv:1003.2113 Van
Raan at all claims that the order of operations (first dividing then adding)
does not apply to citation analysis. In my contribution I discuss a few
analogues in Physics and Medicine and argue that in no other field of science
where quantities have physical or financial meaning, implying that that numbers
have a real unit of measure, it would be allowed to ignore the rule of
operations. Hence, the claim of CWTS that the order of operations is not
relevant brings studies ignoring this rule as done by CWTS in the category
'Pseudo Science'.
|
[{'version': 'v1', 'created': 'Sat, 10 Apr 2010 09:40:47 GMT'}]
|
2010-04-13
|
[array(['Spaan', 'Jos AE', ''], dtype=object)]
|
5,205 |
1410.4511
|
Caucher Birkar
|
Caucher Birkar and Joe Waldron
|
Existence of Mori fibre spaces for 3-folds in char $p$
|
36 pages
| null | null | null |
math.AG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We prove the following results for projective klt pairs of dimension $3$ over
an algebraically closed field of char $p>5$: the cone theorem, the base point
free theorem, the contraction theorem, finiteness of minimal models,
termination with scaling, existence of Mori fibre spaces, etc.
|
[{'version': 'v1', 'created': 'Thu, 16 Oct 2014 17:36:56 GMT'}]
|
2014-10-17
|
[array(['Birkar', 'Caucher', ''], dtype=object)
array(['Waldron', 'Joe', ''], dtype=object)]
|
5,206 |
0709.1325
|
A. Lefevre
|
Alexandre lefevre and Giulio Biroli
|
Dynamics of interacting particle systems: stochastic process and field
theory
|
Article for the special issue of J Stat Mech on "Dynamics of Non
Equilibrium Systems"
|
J.Stat.Mech.0707:P07024,2007
|
10.1088/1742-5468/2007/07/P07024
| null |
cond-mat.stat-mech
| null |
We present an approach to the dynamics of interacting particle systems, which
allows to derive path integral formulas from purely stochastic considerations.
We show that the resulting field theory is a dual version of the standard
theory of Doi and Peliti. This clarify both the origin of the Cole-Hopf map
between the two approaches and the occurence of imaginary noises in effective
Langevin equations for reaction-diffusion systems. The advantage of our
approach is that it focuses directly on the density field. We show some
applications, in particular on the Zero Range Process, hydrodynamic limits and
large deviation functional.
|
[{'version': 'v1', 'created': 'Mon, 10 Sep 2007 08:42:23 GMT'}]
|
2008-11-26
|
[array(['lefevre', 'Alexandre', ''], dtype=object)
array(['Biroli', 'Giulio', ''], dtype=object)]
|
5,207 |
1508.00928
|
Sophie Schirmer
|
Frank Langbein, Sophie Schirmer, Edmond Jonckheere
|
Time optimal information transfer in spintronics networks
|
accepted for CDC 2015
|
Proc. IEEE 54th Annual Conference on Decision and Control (CDC),
pp. 6454-6459, 2015
|
10.1109/CDC.2015.7403236
| null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Propagation of information encoded in spin degrees of freedom through
networks of coupled spins enables important applications in spintronics and
quantum information processing. We study control of information propagation in
networks of spin-$\tfrac{1}{2}$ particles with uniform nearest neighbour
couplings forming a ring with a single excitation in the network as simple
prototype of a router for spin-based information. Specifically optimising
spatially distributed potentials, which remain constant during information
transfer, simplifies the implementation of the routing scheme. However, the
limited degrees of freedom makes finding a control that maximises the transfer
probability in a short time difficult. We show that the structure of the
eigenvalues and eigenvectors must fulfill a specific condition to be able to
maximise the transfer fidelity, and demonstrate that a specific choice among
the many potential structures that fulfill this condition significantly
improves the solutions found by optimal control.
|
[{'version': 'v1', 'created': 'Tue, 4 Aug 2015 22:07:42 GMT'}]
|
2019-10-15
|
[array(['Langbein', 'Frank', ''], dtype=object)
array(['Schirmer', 'Sophie', ''], dtype=object)
array(['Jonckheere', 'Edmond', ''], dtype=object)]
|
5,208 |
1604.01797
|
Andres Ledesma
|
Andres Ledesma and Hannu Nieminen and P\"aivi Valve and Miikka Ermes
and Holly Jimison and Misha Pavel
|
The shape of health: A comparison of five alternative ways of
visualizing personal health and wellbeing
|
in Engineering in Medicine and Biology Society (EMBC), 2015 37th
Annual International Conference of the IEEE
| null |
10.1109/EMBC.2015.7320161
| null |
cs.HC
|
http://creativecommons.org/licenses/by/4.0/
|
The combination of clinical and personal health and wellbeing data can tell
us much about our behaviors, risks and overall status. The way this data is
visualized may affect our understanding of our own health. To study this
effect, we conducted a small experiment with 30 participants in which we
presented a holistic overview of the health and wellbeing of two modeled
individuals, one of them with metabolic syndrome. We used an insight-based
methodology to assess the effectiveness of the visualizations. The results show
that adequate visualization of holistic health data helps users without medical
background to better understand the overall health situation and possible
health risks related to lifestyles. Furthermore, we found that the application
of insight-based methodology in the health and wellbeing domain remains
unexplored and additional research and methodology development are needed.
|
[{'version': 'v1', 'created': 'Wed, 6 Apr 2016 20:17:43 GMT'}]
|
2016-04-08
|
[array(['Ledesma', 'Andres', ''], dtype=object)
array(['Nieminen', 'Hannu', ''], dtype=object)
array(['Valve', 'Päivi', ''], dtype=object)
array(['Ermes', 'Miikka', ''], dtype=object)
array(['Jimison', 'Holly', ''], dtype=object)
array(['Pavel', 'Misha', ''], dtype=object)]
|
5,209 |
1103.2348
|
Lin Zhong
|
Felix Xiaozhu Lin, Zhen Wang, Robert LiKamWa, and Lin Zhong
|
Transparent Programming of Heterogeneous Smartphones for Sensing
| null | null | null | null |
cs.OS cs.PL
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Sensing on smartphones is known to be power-hungry. It has been shown that
this problem can be solved by adding an ultra low-power processor to execute
simple, frequent sensor data processing. While very effective in saving energy,
this resulting heterogeneous, distributed architecture poses a significant
challenge to application development.
We present Reflex, a suite of runtime and compilation techniques to conceal
the heterogeneous, distributed nature from developers. The Reflex automatically
transforms the developer's code for distributed execution with the help of the
Reflex runtime. To create a unified system illusion, Reflex features a novel
software distributed shared memory (DSM) design that leverages the extreme
architectural asymmetry between the low-power processor and the powerful
central processor to achieve both energy efficiency and performance.
We report a complete realization of Reflex for heterogeneous smartphones with
Maemo/Linux as the central kernel. Using a tri-processor hardware prototype and
sensing applications reported in recent literature, we evaluate the Reflex
realization for programming transparency, energy efficiency, and performance.
We show that Reflex supports a programming style that is very close to
contemporary smartphone programming. It allows existing sensing applications to
be ported with minor source code changes. Reflex reduces the system power in
sensing by up to 83%, and its runtime system only consumes 10% local memory on
a typical ultra-low power processor.
|
[{'version': 'v1', 'created': 'Fri, 11 Mar 2011 19:12:15 GMT'}]
|
2011-03-14
|
[array(['Lin', 'Felix Xiaozhu', ''], dtype=object)
array(['Wang', 'Zhen', ''], dtype=object)
array(['LiKamWa', 'Robert', ''], dtype=object)
array(['Zhong', 'Lin', ''], dtype=object)]
|
5,210 |
2112.08196
|
Furkan Luleci
|
Furkan Luleci, F. Necati Catbas, Onur Avci
|
Generative Adversarial Networks for Data Generation in Structural Health
Monitoring
| null | null |
10.3389/fbuil.2022.816644
| null |
cs.LG cs.AI stat.AP
|
http://creativecommons.org/licenses/by-nc-nd/4.0/
|
Structural Health Monitoring (SHM) has been continuously benefiting from the
advancements in the field of data science. Various types of Artificial
Intelligence (AI) methods have been utilized for the assessment and evaluation
of civil structures. In AI, Machine Learning (ML) and Deep Learning (DL)
algorithms require plenty of datasets to train; particularly, the more data DL
models are trained with, the better output it yields. Yet, in SHM applications,
collecting data from civil structures through sensors is expensive and
obtaining useful data (damage associated data) is challenging. In this paper,
1-D Wasserstein loss Deep Convolutional Generative Adversarial Networks using
Gradient Penalty (1-D WDCGAN-GP) is utilized to generate damage associated
vibration datasets that are similar to the input. For the purpose of
vibration-based damage diagnostics, a 1-D Deep Convolutional Neural Network
(1-D DCNN) is built, trained, and tested on both real and generated datasets.
The classification results from the 1-D DCNN on both datasets resulted to be
very similar to each other. The presented work in this paper shows that for the
cases of insufficient data in DL or ML-based damage diagnostics, 1-D WDCGAN-GP
can successfully generate data for the model to be trained on. Keywords: 1-D
Generative Adversarial Networks (GAN), Deep Convolutional Generative
Adversarial Networks (DCGAN), Wasserstein Generative Adversarial Networks with
Gradient Penalty (WGAN-GP), 1-D Convolutional Neural Networks (CNN), Structural
Health Monitoring (SHM), Structural Damage Diagnostics, Structural Damage
Detection
|
[{'version': 'v1', 'created': 'Tue, 7 Dec 2021 03:39:31 GMT'}
{'version': 'v2', 'created': 'Thu, 3 Mar 2022 14:09:16 GMT'}]
|
2022-04-29
|
[array(['Luleci', 'Furkan', ''], dtype=object)
array(['Catbas', 'F. Necati', ''], dtype=object)
array(['Avci', 'Onur', ''], dtype=object)]
|
5,211 |
hep-th/9712033
|
Mathias Pillin
|
M. Pillin (King's College London)
|
The Form Factors in the Sinh-Gordon Model
|
21 pages, substantially revised and expanded
|
Int.J.Mod.Phys. A13 (1998) 4469-4486
|
10.1142/S0217751X98002158
|
KCL-MTH-97-68
|
hep-th
| null |
The most general solution to the form factor problem in the sinh-Gordon model
is presented in an explicit way. The linearly independent classes of solutions
correspond to powers of the elementary field. We show how the form factors of
exponential operators can be obtained from the general solution by adjusting
free parameters. The general formula obtained in the sinh-Gordon case
reproduces the form factors of the scaling Lee-Yang model in a certain limit of
the coupling constant.
|
[{'version': 'v1', 'created': 'Wed, 3 Dec 1997 13:06:56 GMT'}
{'version': 'v2', 'created': 'Mon, 2 Feb 1998 11:32:32 GMT'}]
|
2009-10-30
|
[array(['Pillin', 'M.', '', "King's College London"], dtype=object)]
|
5,212 |
1601.06504
|
Yongming Li
|
Yongming Li
|
Quantitative Model Checking of Linear-Time Properties Based on
Generalized Possibility Measures
|
arXiv admin note: text overlap with arXiv:1409.6466
| null | null | null |
cs.LO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Model checking of linear-time properties based on possibility measures was
studied in previous work (Y. Li and L. Li, Model checking of linear-time
properties based on possibility measure, IEEE Transactions on Fuzzy Systems,
21(5)(2013), 842-854). However, the linear-time properties considered in the
previous work was classical and qualitative, possibility information of the
systems was not considered at all. We shall study quantitative model checking
of fuzzy linear-time properties based on generalized possibility measures in
the paper. Both the model of the system, as well as the properties the system
needs to adhere to, are described using possibility information to identify the
uncertainty in the model/properties. The systems are modeled by {\sl
generalized possibilistic Kripke structures} (GPKS, in short), and the
properties are described by fuzzy linear-time properties. Concretely, fuzzy
linear-time properties about reachability, always reachability, constrain
reachability, repeated reachability and persitence in GPKSs are introduced and
studied. Fuzzy regular safety properties and fuzzy $\omega-$regular properties
in GPKSs are introduced, the verification of fuzzy regular safety properties
and fuzzy $\omega-$regular properties using fuzzy finite automata are
thoroughly studied. It has been shown that the verification of fuzzy regular
safety properties and fuzzy $\omega-$regular properties in a finite GPKS can be
transformed into the verification of (always) reachability properties and
repeated reachability (persistence) properties in the product GPKS introduced
in this paper. Several examples are given to illustrate the methods presented
in the paper.
|
[{'version': 'v1', 'created': 'Mon, 25 Jan 2016 08:10:12 GMT'}]
|
2016-01-26
|
[array(['Li', 'Yongming', ''], dtype=object)]
|
5,213 |
astro-ph/0504628
|
Anders Johansen
|
Anders Johansen, Hubert Klahr, Thomas Henning (MPIA, Heidelberg)
|
Gravoturbulent formation of planetesimals
|
Accepted for publication in ApJ
|
Astrophys.J. 636 (2006) 1121-1134
| null | null |
astro-ph
| null |
We explore the effect of magnetorotational turbulence on the dynamics and
concentrations of boulders in local box simulations of a sub-Keplerian
protoplanetary disc. The solids are treated as particles each with an
independent space coordinate and velocity. We find that the turbulence has two
effects on the solids. 1) Meter and decameter bodies are strongly concentrated,
locally up to a factor 100 times the average dust density, whereas decimeter
bodies only experience a moderate density increase. The concentrations are
located in large scale radial gas density enhancements that arise from a
combination of turbulence and shear. 2) For meter-sized boulders, the
concentrations cause the average radial drift speed to be reduced by 40%. We
find that the densest clumps of solids are gravitationally unstable under
physically reasonable values for the gas column density and for the dust-to-gas
ratio due to sedimentation. We speculate that planetesimals can form in a dust
layer that is not in itself dense enough to undergo gravitational
fragmentation, and that fragmentation happens in turbulent density fluctuations
in this sublayer.
|
[{'version': 'v1', 'created': 'Thu, 28 Apr 2005 09:55:18 GMT'}
{'version': 'v2', 'created': 'Fri, 5 Aug 2005 11:43:46 GMT'}
{'version': 'v3', 'created': 'Thu, 15 Sep 2005 08:41:12 GMT'}]
|
2007-05-23
|
[array(['Johansen', 'Anders', '', 'MPIA, Heidelberg'], dtype=object)
array(['Klahr', 'Hubert', '', 'MPIA, Heidelberg'], dtype=object)
array(['Henning', 'Thomas', '', 'MPIA, Heidelberg'], dtype=object)]
|
5,214 |
1909.04241
|
Jiang Yunfeng
|
Yunfeng Jiang
|
Counting twisted sheaves and S-duality
|
51 pages, the proof of Vafa-Witten conjecture is given for any prime
rank using purely optimal cyclic gerbes corresponding to nontrivial Brauer
classes, correct the definition of Joyce-Song stable pairs, comments are very
welcome
| null | null | null |
math.AG
|
http://creativecommons.org/licenses/by/4.0/
|
We provide a definition of Tanaka-Thomas's Vafa-Witten invariants for \'etale
gerbes over smooth projective surfaces using the moduli spaces of $\mu_r$-gerbe
twisted sheaves and Higgs sheaves. Twisted sheaves and their moduli are
naturally used to study the period-index theorem for the corresponding
$\mu_r$-gerbe in the Brauer group of the surfaces. Deformation and obstruction
theory of the twisted sheaves and Higgs sheaves behave like general sheaves and
Higgs sheaves. We define virtual fundamental classes on the moduli spaces and
define the twisted Vafa-Witten invariants using virtual localization and the
Behrend function on the moduli spaces. As applications for the Langlands dual
group $\SU(r)/\zz_r$ of $\SU(r)$, we define the $\SU(r)/\zz_r$-Vafa-Witten
invariants using the twisted invariants for \'etale gerbes, and prove the
S-duality conjecture of Vafa-Witten for the projective plane in rank two and
for K3 surfaces in prime ranks. We also conjecture for other surfaces.
|
[{'version': 'v1', 'created': 'Tue, 10 Sep 2019 02:22:39 GMT'}
{'version': 'v2', 'created': 'Wed, 13 Nov 2019 07:41:46 GMT'}
{'version': 'v3', 'created': 'Fri, 3 Jan 2020 09:01:48 GMT'}
{'version': 'v4', 'created': 'Mon, 31 May 2021 15:19:08 GMT'}]
|
2021-06-01
|
[array(['Jiang', 'Yunfeng', ''], dtype=object)]
|
5,215 |
1905.11013
|
Hao Wang
|
Hao Wang, Tong Xu, Qi Liu, Defu Lian, Enhong Chen, Dongfang Du, Han
Wu, Wen Su
|
MCNE: An End-to-End Framework for Learning Multiple Conditional Network
Representations of Social Network
|
Accepted by KDD 2019 Research Track. In Proceedings of the 25th ACM
SIGKDD Conference on Knowledge Discovery and Data Mining (KDD'19)
| null |
10.1145/3292500.3330931
| null |
cs.SI cs.LG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Recently, the Network Representation Learning (NRL) techniques, which
represent graph structure via low-dimension vectors to support social-oriented
application, have attracted wide attention. Though large efforts have been
made, they may fail to describe the multiple aspects of similarity between
social users, as only a single vector for one unique aspect has been
represented for each node. To that end, in this paper, we propose a novel
end-to-end framework named MCNE to learn multiple conditional network
representations, so that various preferences for multiple behaviors could be
fully captured. Specifically, we first design a binary mask layer to divide the
single vector as conditional embeddings for multiple behaviors. Then, we
introduce the attention network to model interaction relationship among
multiple preferences, and further utilize the adapted message sending and
receiving operation of graph neural network, so that multi-aspect preference
information from high-order neighbors will be captured. Finally, we utilize
Bayesian Personalized Ranking loss function to learn the preference similarity
on each behavior, and jointly learn multiple conditional node embeddings via
multi-task learning framework. Extensive experiments on public datasets
validate that our MCNE framework could significantly outperform several
state-of-the-art baselines, and further support the visualization and transfer
learning tasks with excellent interpretability and robustness.
|
[{'version': 'v1', 'created': 'Mon, 27 May 2019 07:29:48 GMT'}]
|
2019-05-28
|
[array(['Wang', 'Hao', ''], dtype=object)
array(['Xu', 'Tong', ''], dtype=object)
array(['Liu', 'Qi', ''], dtype=object)
array(['Lian', 'Defu', ''], dtype=object)
array(['Chen', 'Enhong', ''], dtype=object)
array(['Du', 'Dongfang', ''], dtype=object)
array(['Wu', 'Han', ''], dtype=object)
array(['Su', 'Wen', ''], dtype=object)]
|
5,216 |
2110.04263
|
David Naccache
|
Eric Brier and Christophe Clavier and Linda Gutsche and David Naccache
|
The Multiplicative Persistence Conjecture Is True for Odd Targets
| null | null | null | null |
math.NT
|
http://creativecommons.org/licenses/by/4.0/
|
In 1973, Neil Sloane published a very short paper introducing an intriguing
problem: Pick a decimal integer $n$ and multiply all its digits by each other.
Repeat the process until a single digit $\Delta(n)$ is obtained. $\Delta(n)$ is
called the \textsl{multiplicative digital root of $n$} or \textsl{the target of
$n$}. The number of steps $\Xi(n)$ needed to reach $\Delta(n)$, called the
multiplicative persistence of $n$ or \textsl{the height of $n$} is conjectured
to always be at most $11$.
Like many other very simple to state number-theoretic conjectures, the
multiplicative persistence mystery resisted numerous explanation attempts.
This paper proves that the conjecture holds for all odd target values: Namely
that if $\Delta(n)\in\{1,3,7,9\}$, then $\Xi(n) \leq 1$ and that if
$\Delta(n)=5$, then $\Xi(n) \leq 5$.
Naturally, we overview the difficulties currently preventing us from
extending the approach to (nonzero) even targets.
|
[{'version': 'v1', 'created': 'Fri, 8 Oct 2021 17:20:16 GMT'}]
|
2021-10-11
|
[array(['Brier', 'Eric', ''], dtype=object)
array(['Clavier', 'Christophe', ''], dtype=object)
array(['Gutsche', 'Linda', ''], dtype=object)
array(['Naccache', 'David', ''], dtype=object)]
|
5,217 |
1702.03420
|
Urjit A. Yajnik
|
Urjit A. Yajnik
|
Why PeV scale left-right symmetry is a good thing
|
18 pages. Presented at \textsl{Pheno1} First Workshop on Beyond
Standard Model Physics, IISER Mohali April 2016 and at the program Exploring
the Energy Ladder of the Universe at Mainz Institute for Theoretical Physics
June 2016. To appear in proceedings. arXiv admin note: substantial text
overlap with arXiv:1401.8063
|
Pramana -- J. Phys. (2017) 89:59
|
10.1007/s12043-017-1461-5
| null |
hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Left-right symmetric gauge theory presents a minimal paradigm to accommodate
massive neutrinos with all known conserved symmetries duly gauged. The work
presented here is based on the argument that the see-saw mechanism does not
force the new right handed symmetry scale to be very high, and as such some of
the species from the spectrum of the new gauge and Higgs bosons can have masses
within a few orders of magnitude of the TeV scale. The scale of the left-right
parity breaking in turn can be sequestered from the Planck scale by
supersymmetry. We have studied several formulations of such Just Beyond
Standard Model (JBSM) theories for their consistency with cosmology.
Specifically the need to eliminate phenomenologically undesirable domain walls
gives many useful clues. The possibility that the exact left-right symmetry
breaks in conjunction with supersymmetry has been explored in the context of
gauge mediation, placing restrictions on the available parameter space. Finally
we have also studied a left-right symmetric model in the context of metastable
supersymmetric vacua and obtained constraints on the mass scale of Right handed
symmetry. In all the cases studied, The mass scale of right handed neutrino
$M_R$ remains bounded from above, and in some of the cases the scale $10^9$ GeV
favourable for supersymmetric thermal leptogenesis is disallowed. On the other
hand PeV scale remains a viable option, and the results warrant a more detailed
study of such models for their observability in collider and astroparticle
experiments.
|
[{'version': 'v1', 'created': 'Sat, 11 Feb 2017 12:35:35 GMT'}
{'version': 'v2', 'created': 'Wed, 1 Nov 2017 09:53:42 GMT'}]
|
2017-11-02
|
[array(['Yajnik', 'Urjit A.', ''], dtype=object)]
|
5,218 |
1809.07589
|
Roberto Interdonato
|
Roberto Interdonato, Dino Ienco, Raffaele Gaetano, Kenji Ose
|
DuPLO: A DUal view Point deep Learning architecture for time series
classificatiOn
| null | null | null | null |
cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Nowadays, modern Earth Observation systems continuously generate huge amounts
of data. A notable example is represented by the Sentinel-2 mission, which
provides images at high spatial resolution (up to 10m) with high temporal
revisit period (every 5 days), which can be organized in Satellite Image Time
Series (SITS). While the use of SITS has been proved to be beneficial in the
context of Land Use/Land Cover (LULC) map generation, unfortunately, machine
learning approaches commonly leveraged in remote sensing field fail to take
advantage of spatio-temporal dependencies present in such data.
Recently, new generation deep learning methods allowed to significantly
advance research in this field. These approaches have generally focused on a
single type of neural network, i.e., Convolutional Neural Networks (CNNs) or
Recurrent Neural Networks (RNNs), which model different but complementary
information: spatial autocorrelation (CNNs) and temporal dependencies (RNNs).
In this work, we propose the first deep learning architecture for the analysis
of SITS data, namely \method{} (DUal view Point deep Learning architecture for
time series classificatiOn), that combines Convolutional and Recurrent neural
networks to exploit their complementarity. Our hypothesis is that, since CNNs
and RNNs capture different aspects of the data, a combination of both models
would produce a more diverse and complete representation of the information for
the underlying land cover classification task. Experiments carried out on two
study sites characterized by different land cover characteristics (i.e., the
\textit{Gard} site in France and the \textit{Reunion Island} in the Indian
Ocean), demonstrate the significance of our proposal.
|
[{'version': 'v1', 'created': 'Thu, 20 Sep 2018 12:19:35 GMT'}]
|
2018-09-21
|
[array(['Interdonato', 'Roberto', ''], dtype=object)
array(['Ienco', 'Dino', ''], dtype=object)
array(['Gaetano', 'Raffaele', ''], dtype=object)
array(['Ose', 'Kenji', ''], dtype=object)]
|
5,219 |
astro-ph/0508564
|
Ryan Scranton
|
Ryan Scranton, Andrew J. Connolly, Alexander S. Szalay, Robert H.
Lupton, David Johnston, Tamas Budavari, John Brinkman, Masataka Fukugita
|
Photometric Covariance in Multi-Band Surveys: Understanding the
Photometric Error in the SDSS
|
59 pages, 20 figures, 17 tables, submitted to AJ
| null | null | null |
astro-ph
| null |
In this paper we describe a detailed analysis of the photometric
uncertainties present within the Sloan Digital Sky Survey (SDSS) imaging survey
based on repeat observations of approximately 200 square degrees of the sky. We
show that, for the standard SDSS aperture systems (petrocounts, counts_model,
psfcounts and cmodel_counts), the errors generated by the SDSS photometric
pipeline under-estimate the observed scatter in the individual bands. The
degree of disagreement is a strong function of aperture and magnitude (ranging
from 20% to more than a factor of 2). We also find that the photometry in the
five optical bands can be highly correlated for both point sources and
galaxies, although the correlation for point sources is almost entirely due to
variable objects. Without correcting for this covariance the SDSS color errors
could be in over-estimated by a factor of two to three. Combining these
opposing effects, the SDSS errors on the colors differ from the observed color
variation by approximately 10-20% for most apertures and magnitudes. We provide
a prescription to correct the errors derived from the SDSS photometric pipeline
as a function of magnitude and a semi-analytic method for generating the
appropriate covariance between the different photometric passbands. Given the
intrinsic nature of these correlations, we expect that all current and future
multi-band surveys will also observe strongly covariant magnitudes. The ability
of these surveys to complete their science goals is largely dependent on
color-based target selection and photometric redshifts; these results show the
importance of spending a significant fraction of early survey operations on
re-imaging to empirically determine the photometric covariance of any
observing/reduction pipeline.
|
[{'version': 'v1', 'created': 'Thu, 25 Aug 2005 23:36:26 GMT'}
{'version': 'v2', 'created': 'Fri, 16 Sep 2005 06:37:39 GMT'}]
|
2007-05-23
|
[array(['Scranton', 'Ryan', ''], dtype=object)
array(['Connolly', 'Andrew J.', ''], dtype=object)
array(['Szalay', 'Alexander S.', ''], dtype=object)
array(['Lupton', 'Robert H.', ''], dtype=object)
array(['Johnston', 'David', ''], dtype=object)
array(['Budavari', 'Tamas', ''], dtype=object)
array(['Brinkman', 'John', ''], dtype=object)
array(['Fukugita', 'Masataka', ''], dtype=object)]
|
5,220 |
1706.06615
|
Yuri Gomes
|
Jos\'e J. Ram\'on Mar\'i, Y.M.P. Gomes and J. A. Helay\"el-Neto
|
F-term spontaneous breaking of 3D-SUSY an algebro-geometric treatment
|
Comments are welcome
| null | null | null |
hep-th math-ph math.MP
|
http://creativecommons.org/publicdomain/zero/1.0/
|
We settle a result on generic exactness of SUSY in 3-D, and provide a
mechanism of F-term spontaneous breaking of 3-D SUSY, with a different set of
tools from those used by O'Raifeartaigh in his seminal work on 4-D SUSY. In our
study, we use techniques of projective algebraic geometry so as to deal
successfully with cubic hypersurfaces.
|
[{'version': 'v1', 'created': 'Tue, 20 Jun 2017 18:38:32 GMT'}
{'version': 'v2', 'created': 'Mon, 29 Jul 2019 17:05:48 GMT'}]
|
2019-07-30
|
[array(['Marí', 'José J. Ramón', ''], dtype=object)
array(['Gomes', 'Y. M. P.', ''], dtype=object)
array(['Helayël-Neto', 'J. A.', ''], dtype=object)]
|
5,221 |
quant-ph/0208113
|
Eric Hsu
|
Eric Hsu
|
Quantum Computing Simulation Optimizations and Operational Errors on
Various 2-qubit Multiplier Circuits
|
13 pages, 6 figures
| null | null | null |
quant-ph
| null |
Since simulating quantum computers requires exponentially more classical
resources, efficient algorithms are extremely helpful. We analyze algorithms
that create single qubit and specific controlled qubit matrix representations
of gates.
Additionally, we use the simulator to investigate errors based on different
probability distributions and to investigate the robustness of different
2-qubit multiplier circuits in the presence of operational errors.
|
[{'version': 'v1', 'created': 'Thu, 15 Aug 2002 23:20:57 GMT'}]
|
2007-05-23
|
[array(['Hsu', 'Eric', ''], dtype=object)]
|
5,222 |
1409.2619
|
Juris Kalvans Dr.phys.
|
Juris Kalvans
|
Cosmic-ray induced diffusion in interstellar ices
| null |
Baltic Astronomy, vol. 23, 137 (2014)
|
10.1515/astro-2017-0178
| null |
astro-ph.GA astro-ph.HE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Cosmic rays are able to heat interstellar dust grains. This may enhance
molecule mobility in icy mantles that have accumulated on the grains in dark
cloud cores. A three-phase astrochemical model was used to investigate the
molecule mobility in interstellar ices. Specifically, diffusion through pores
in ice between the subsurface mantle and outer surface, assisted by whole-grain
heating, was considered. It was found that the pores can serve as an efficient
transport route for light species. The diffusion of chemical radicals from the
mantle to the outer surface are most effective. These species accumulate in the
mantle because of photodissociation by the cosmic-ray induced photons. The
faster diffusion of hydrogen within the warm ice enhances the hydrogenation of
radicals on pore surfaces. The overall result of the whole grain
heating-induced radial diffusion in ice are higher abundances of the ice
species whose synthesis involve light radicals. Examples of stable species
synthesized this way include the complex organic molecules, OCS, H2O2 and
cyanoplyynes.
|
[{'version': 'v1', 'created': 'Tue, 9 Sep 2014 07:25:30 GMT'}]
|
2018-03-14
|
[array(['Kalvans', 'Juris', ''], dtype=object)]
|
5,223 |
2105.11522
|
Marco Ballesio
|
Marco Ballesio and Ajay Jasra
|
Unbiased Estimation of the Gradient of the Log-Likelihood for a Class of
Continuous-Time State-Space Models
|
24 pages
| null | null | null |
stat.ML cs.LG cs.NA math.NA
|
http://creativecommons.org/licenses/by/4.0/
|
In this paper, we consider static parameter estimation for a class of
continuous-time state-space models. Our goal is to obtain an unbiased estimate
of the gradient of the log-likelihood (score function), which is an estimate
that is unbiased even if the stochastic processes involved in the model must be
discretized in time. To achieve this goal, we apply a doubly randomized scheme,
that involves a novel coupled conditional particle filter (CCPF) on the second
level of randomization. Our novel estimate helps facilitate the application of
gradient-based estimation algorithms, such as stochastic-gradient Langevin
descent. We illustrate our methodology in the context of stochastic gradient
descent (SGD) in several numerical examples and compare with the Rhee & Glynn
estimator.
|
[{'version': 'v1', 'created': 'Mon, 24 May 2021 20:31:48 GMT'}
{'version': 'v2', 'created': 'Fri, 28 May 2021 20:56:49 GMT'}]
|
2021-06-01
|
[array(['Ballesio', 'Marco', ''], dtype=object)
array(['Jasra', 'Ajay', ''], dtype=object)]
|
5,224 |
0906.4641
|
Thorsten Renk
|
Thorsten Renk
|
From R_AA via correlations to jets - the long road to tomography
|
8 pages, 3 figures- To appear in the conference proceedings for Quark
Matter 2009, March 30 - April 4, Knoxville, Tennessee
|
Nucl.Phys.A830:123c-130c,2009
|
10.1016/j.nuclphysa.2009.10.013
| null |
hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The main motivation to investigate hard probes in heavy ion collisions is to
do tomography, i.e. to infer medium properties from the in-medium modification
of hard processes. Yet while the suppression of high P_T hadrons has been
measured for some time, solid tomographic information is slow to emerge. This
can be traced back to theoretical uncertainties and ambiguities in modelling
both medium evolution and parton-medium interaction. Ways to overcome these
difficulties are to constrain models better and to focus on more differential
observables. Correlations of high P_T hadrons offer non-trivial information
beyond what can be deduced from single hadron suppression. They reflect not
only the hard reaction being modified by the medium, but also the back reaction
of the medium to the hard probe. Models for hard back-to-back correlations are
now very well constrained by a wealth of data and allow insights into the
nature of the parton-medium interaction as well as first true tomographic
results. Models of full in-medium jet evolution are being actively developed,
but have yet to make substantial contact with data. Progress is slower in the
understanding of low P_T correlations, the ridge and the cone, although a
qualitative understanding of the nature of the physics behind these
correlations starts to emerge.
|
[{'version': 'v1', 'created': 'Thu, 25 Jun 2009 09:38:03 GMT'}
{'version': 'v2', 'created': 'Fri, 11 Sep 2009 08:48:38 GMT'}]
|
2009-11-18
|
[array(['Renk', 'Thorsten', ''], dtype=object)]
|
5,225 |
1010.1236
|
Stephen Walborn
|
S. P. Walborn, C. H. Monken, S. P\'adua and P. H. Souto Ribeiro
|
Spatial correlations in parametric down-conversion
|
116 pages, 35 figures. To appear in Physics Reports
| null |
10.1016/j.physrep.2010.06.003
| null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The transverse spatial effects observed in photon pairs produced by
parametric down-conversion provide a robust and fertile testing ground for
studies of quantum mechanics, non-classical states of light, correlated imaging
and quantum information. Over the last 20 years there has been much progress in
this area, ranging from technical advances and applications such as quantum
imaging to investigations of fundamental aspects of quantum physics such as
complementarity relations, Bell's inequality violation and entanglement. The
field has grown immensely: a quick search shows that there are hundreds of
papers published in this field. The objective of this article is to review the
building blocks and major theoretical and experimental advances in the field,
along with some possible technical applications and connections to other
research areas.
|
[{'version': 'v1', 'created': 'Wed, 6 Oct 2010 19:17:08 GMT'}]
|
2015-05-20
|
[array(['Walborn', 'S. P.', ''], dtype=object)
array(['Monken', 'C. H.', ''], dtype=object)
array(['Pádua', 'S.', ''], dtype=object)
array(['Ribeiro', 'P. H. Souto', ''], dtype=object)]
|
5,226 |
1609.07353
|
Jan Goetz
|
J. Goetz, S. Pogorzalek, F. Deppe, K. G. Fedorov, P. Eder, M. Fischer,
F. Wulschner, E. Xie, A. Marx, and R. Gross
|
Photon Statistics of Propagating Thermal Microwaves
|
containing supplemental material
|
Phys. Rev. Lett. 118, 103602 (2017)
|
10.1103/PhysRevLett.118.103602
| null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In experiments with superconducting quantum circuits, characterizing the
photon statistics of propagating microwave fields is a fundamental task. We
quantify the $n^{2}\,{+}\,n$ photon number variance of thermal microwave
photons emitted from a black-body radiator for mean photon numbers
$0.05\,{\lesssim}\,n\,{\lesssim}\,1.5$. We probe the fields using either
correlation measurements or a transmon qubit coupled to a microwave resonator.
Our experiments provide a precise quantitative characterization of weak
microwave states and information on the noise emitted by a Josephson parametric
amplifier.
|
[{'version': 'v1', 'created': 'Fri, 23 Sep 2016 13:25:04 GMT'}
{'version': 'v2', 'created': 'Mon, 26 Sep 2016 17:06:18 GMT'}
{'version': 'v3', 'created': 'Sat, 11 Mar 2017 11:11:35 GMT'}]
|
2017-03-14
|
[array(['Goetz', 'J.', ''], dtype=object)
array(['Pogorzalek', 'S.', ''], dtype=object)
array(['Deppe', 'F.', ''], dtype=object)
array(['Fedorov', 'K. G.', ''], dtype=object)
array(['Eder', 'P.', ''], dtype=object)
array(['Fischer', 'M.', ''], dtype=object)
array(['Wulschner', 'F.', ''], dtype=object)
array(['Xie', 'E.', ''], dtype=object)
array(['Marx', 'A.', ''], dtype=object)
array(['Gross', 'R.', ''], dtype=object)]
|
5,227 |
cond-mat/0407634
|
Eleni Sakellari
|
E. Sakellari, N. P. Proukakis and C. S. Adams
|
Tunnelling induced collapse of an atomic Bose-Einstein condensate in a
double-well potential
| null | null |
10.1088/0953-4075/37/18/009
| null |
cond-mat.other
| null |
The stability of a low temperature Bose-Einstein condensate with attractive
interactions in one and three dimensional double-well potentials is discussed.
In particular, the tunnelling dynamics of a condensate under the influence of a
time-dependent potential gradient is investigated. The condensate is shown to
collapse at a critical potential gradient which corresponds to a critical
number of atoms in one of the two wells. The sensitivity of this tunnelling
induced collapse could provide a useful tool in the study of condensates with
attractive interactions.
|
[{'version': 'v1', 'created': 'Fri, 23 Jul 2004 16:16:38 GMT'}]
|
2009-11-10
|
[array(['Sakellari', 'E.', ''], dtype=object)
array(['Proukakis', 'N. P.', ''], dtype=object)
array(['Adams', 'C. S.', ''], dtype=object)]
|
5,228 |
2003.05167
|
Fabien Panloup
|
Karine Bertin (CIMFAV), Nicolas Klutchnikoff, Fabien Panloup (LAREMA),
Maylis Varvenne (IMT, UT1)
|
Adaptive estimation of the stationary density of a stochastic
differential equation driven by a fractional Brownian motion
| null | null | null | null |
math.PR math.ST stat.TH
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We build and study a data-driven procedure for the estimation of the
stationary density f of an additive fractional SDE. To this end, we also prove
some new concentrations bounds for discrete observations of such dynamics in
stationary regime.
|
[{'version': 'v1', 'created': 'Wed, 11 Mar 2020 08:57:21 GMT'}]
|
2020-03-12
|
[array(['Bertin', 'Karine', '', 'CIMFAV'], dtype=object)
array(['Klutchnikoff', 'Nicolas', '', 'LAREMA'], dtype=object)
array(['Panloup', 'Fabien', '', 'LAREMA'], dtype=object)
array(['Varvenne', 'Maylis', '', 'IMT, UT1'], dtype=object)]
|
5,229 |
1705.05241
|
Ruolin Liao
|
Ruolin Liao, Ming Tang, Can Zhao, Hao Wu, Songnian Fu, Deming Liu, and
Perry Ping Shum
|
Harnessing oversampling in correlation-coded OTDR
|
7 pages, 8 figures
| null | null | null |
physics.ins-det physics.optics
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Pulse coding is an effective method to overcome the trade-off between
signal-to-noise ratio (SNR) and spatial resolution in optical-fiber sensing
systems based on optical time-domain reflectometry (OTDR). However, the coding
gain has not been yet fully exploited. We provide a comprehensive theoretical
analysis and experimental validation of the sampling criteria for
correlation-coded OTDR, showing that the coding gain can be further improved by
harnessing the oversampling. Moreover, the bandwidth-limited feature of the
photodetector can also be utilized to select the sampling rate so that
additional SNR enhancement is obtained. We believe this principle could be
applied to any practical OTDR-based optical-fiber sensing technology, and serve
to update existing systems based on correlation-coded OTDR in a straightforward
manner at a relatively low cost.
|
[{'version': 'v1', 'created': 'Fri, 12 May 2017 13:37:47 GMT'}]
|
2017-05-16
|
[array(['Liao', 'Ruolin', ''], dtype=object)
array(['Tang', 'Ming', ''], dtype=object)
array(['Zhao', 'Can', ''], dtype=object)
array(['Wu', 'Hao', ''], dtype=object)
array(['Fu', 'Songnian', ''], dtype=object)
array(['Liu', 'Deming', ''], dtype=object)
array(['Shum', 'Perry Ping', ''], dtype=object)]
|
5,230 |
1911.07372
|
Bora Uyumazturk
|
Bora Uyumazturk, Amirhossein Kiani, Pranav Rajpurkar, Alex Wang, Robyn
L. Ball, Rebecca Gao, Yifan Yu, Erik Jones, Curtis P. Langlotz, Brock Martin,
Gerald J. Berry, Michael G. Ozawa, Florette K. Hazard, Ryanne A. Brown, Simon
B. Chen, Mona Wood, Libby S. Allard, Lourdes Ylagan, Andrew Y. Ng, Jeanne
Shen
|
Deep Learning for the Digital Pathologic Diagnosis of Cholangiocarcinoma
and Hepatocellular Carcinoma: Evaluating the Impact of a Web-based Diagnostic
Assistant
|
Machine Learning for Health (ML4H) at NeurIPS 2019 - Extended
Abstract
| null | null | null |
eess.IV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
While artificial intelligence (AI) algorithms continue to rival human
performance on a variety of clinical tasks, the question of how best to
incorporate these algorithms into clinical workflows remains relatively
unexplored. We investigated how AI can affect pathologist performance on the
task of differentiating between two subtypes of primary liver cancer,
hepatocellular carcinoma (HCC) and cholangiocarcinoma (CC). We developed an AI
diagnostic assistant using a deep learning model and evaluated its effect on
the diagnostic performance of eleven pathologists with varying levels of
expertise. Our deep learning model achieved an accuracy of 0.885 on an internal
validation set of 26 slides and an accuracy of 0.842 on an independent test set
of 80 slides. Despite having high accuracy on a hold out test set, the
diagnostic assistant did not significantly improve performance across
pathologists (p-value: 0.184, OR: 1.287 (95% CI 0.886, 1.871)). Model
correctness was observed to significantly bias the pathologist decisions. When
the model was correct, assistance significantly improved accuracy across all
pathologist experience levels and for all case difficulty levels (p-value: <
0.001, OR: 4.289 (95% CI 2.360, 7.794)). When the model was incorrect,
assistance significantly decreased accuracy across all 11 pathologists and for
all case difficulty levels (p-value < 0.001, OR: 0.253 (95% CI 0.126, 0.507)).
Our results highlight the challenges of translating AI models to the clinical
setting, especially for difficult subspecialty tasks such as tumor
classification. In particular, they suggest that incorrect model predictions
could strongly bias an expert's diagnosis, an important factor to consider when
designing medical AI-assistance systems.
|
[{'version': 'v1', 'created': 'Mon, 18 Nov 2019 00:14:54 GMT'}]
|
2019-11-19
|
[array(['Uyumazturk', 'Bora', ''], dtype=object)
array(['Kiani', 'Amirhossein', ''], dtype=object)
array(['Rajpurkar', 'Pranav', ''], dtype=object)
array(['Wang', 'Alex', ''], dtype=object)
array(['Ball', 'Robyn L.', ''], dtype=object)
array(['Gao', 'Rebecca', ''], dtype=object)
array(['Yu', 'Yifan', ''], dtype=object)
array(['Jones', 'Erik', ''], dtype=object)
array(['Langlotz', 'Curtis P.', ''], dtype=object)
array(['Martin', 'Brock', ''], dtype=object)
array(['Berry', 'Gerald J.', ''], dtype=object)
array(['Ozawa', 'Michael G.', ''], dtype=object)
array(['Hazard', 'Florette K.', ''], dtype=object)
array(['Brown', 'Ryanne A.', ''], dtype=object)
array(['Chen', 'Simon B.', ''], dtype=object)
array(['Wood', 'Mona', ''], dtype=object)
array(['Allard', 'Libby S.', ''], dtype=object)
array(['Ylagan', 'Lourdes', ''], dtype=object)
array(['Ng', 'Andrew Y.', ''], dtype=object)
array(['Shen', 'Jeanne', ''], dtype=object)]
|
5,231 |
0910.3622
|
Birgitta Whaley Prof.
|
J. I. Korsbakken, F. K. Wilhelm and K. B. Whaley
|
Electronic structure of superposition states in flux qubits
|
Minor cosmetic changes. Published version.
|
Physica Scripta T137, 014022 (2009)
|
10.1088/0031-8949/2009/T137/014022
| null |
quant-ph cond-mat.supr-con
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Flux qubits, small superconducting loops interrupted by Josephson junctions,
are successful realizations of quantum coherence for macroscopic variables.
Superconductivity in these loops is carried by $\sim 10^6$ -- $10^{10}$
electrons, which has been interpreted as suggesting that coherent
superpositions of such current states are macroscopic superpositions analogous
to Schr\"odinger's cat. We provide a full microscopic analysis of such qubits,
from which the macroscopic quantum description can be derived. This reveals
that the number of microscopic constituents participating in superposition
states for experimentally accessible flux qubits is surprisingly but not
trivially small. The combination of this relatively small size with large
differences between macroscopic observables in the two branches is seen to
result from the Fermi statistics of the electrons and the large disparity
between the values of superfluid and Fermi velocity in these systems.
|
[{'version': 'v1', 'created': 'Mon, 19 Oct 2009 17:42:55 GMT'}
{'version': 'v2', 'created': 'Tue, 13 Apr 2010 22:17:24 GMT'}]
|
2015-05-14
|
[array(['Korsbakken', 'J. I.', ''], dtype=object)
array(['Wilhelm', 'F. K.', ''], dtype=object)
array(['Whaley', 'K. B.', ''], dtype=object)]
|
5,232 |
2303.16562
|
Yakov Shnir
|
Jutta Kunz and Yakov Shnir
|
Charged hairy black holes in the gauged Einstein-Friedberg-Lee-Sirlin
model
|
21 pages, 9 figures
| null |
10.1103/PhysRevD.107.104062
| null |
hep-th gr-qc
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We obtain charged spherically symmetric black holes in the two-component
scalar Einstein-Maxwell-Friedberg-Lee-Sirlin model with a symmetry breaking
potential. These asymptotically flat black holes carry resonant scalar Q-hair.
As expected, these hairy black holes give rise to non-uniqueness. When
comparing these solutions with the corresponding charged boson stars and
Reissner-Nordstr\"om black holes, we find a different pattern in the case of a
massive real scalar component and a massless one. We demonstrate that, as the
real component becomes massless, the resonant hairy black holes bifurcate from
Reissner-Nordstr\"om black holes for sufficiently small gravitational coupling.
|
[{'version': 'v1', 'created': 'Wed, 29 Mar 2023 09:43:29 GMT'}]
|
2023-06-14
|
[array(['Kunz', 'Jutta', ''], dtype=object)
array(['Shnir', 'Yakov', ''], dtype=object)]
|
5,233 |
1504.02865
|
David Gao
|
David Yang Gao and Eldar Hajilarov
|
Analytic Solutions to 3-D Finite Deformation Problems Governed by St
Venant-Kirchhoff Material
|
24 pages, Mathematics and Mechanics of Solids, 2015
| null | null | null |
math-ph math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This paper presents a detailed study on analytical solutions to a general
nonlinear boundary-value problem in finite deformation theory. Based on
canonical duality theory and the associated pure complementary energy principle
in nonlinear elasticity proposed by Gao in 1999, we show that the general
nonlinear partial differential equation for deformation is actually equivalent
to an algebraic (tensor) equation in stress space. For St Venant-Kirchhoff
materials, this coupled cubic algebraic equation can be solved principally to
obtain all possible solutions. Our results show that for any given external
source field such that the statically admissible first Piola-Kirchhoff stress
field has no-zero eigenvalues, the problem has a unique global minimal
solution, which is corresponding to a positive-definite second Piola-Kirchhoff
stress S, and at most eight local solutions corresponding to negative-definite
S. Additionally, the problem could have 15 unstable solutions corresponding to
indefinite S. This paper demonstrates that the canonical duality theory and the
pure complementary energy principle play fundamental roles in nonconvex
analysis and finite deformation theory.
|
[{'version': 'v1', 'created': 'Sat, 11 Apr 2015 12:24:03 GMT'}]
|
2015-04-14
|
[array(['Gao', 'David Yang', ''], dtype=object)
array(['Hajilarov', 'Eldar', ''], dtype=object)]
|
5,234 |
1605.09174
|
Miguel Angel Davo
|
Alfonso Ba\~nos, Miguel A. Dav\'o
|
Stability of time-delay reset systems with a nonlinear and time-varying
base system
|
13 pages,2 figures
| null | null | null |
cs.SY
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This work is devoted to investigate the stability properties of time-delay
reset systems. We present a Lyapunov-Krasovskii proposition, which generalizes
the available results in the literature, providing results for verifying the
stability of time-delay reset systems with nonlinear and time-varying base
system. We demonstrate the applicability of the proposed results in the
analysis of time-delay reset control systems, and an illustrative example with
nonlinear, time-varying base system.
|
[{'version': 'v1', 'created': 'Mon, 30 May 2016 11:07:23 GMT'}
{'version': 'v2', 'created': 'Fri, 8 Jul 2016 07:33:49 GMT'}]
|
2016-07-11
|
[array(['Baños', 'Alfonso', ''], dtype=object)
array(['Davó', 'Miguel A.', ''], dtype=object)]
|
5,235 |
2107.06607
|
Babak Maboudi Afkham
|
Babak Maboudi Afkham, Yiqiu Dong, Per Christian Hansen
|
Uncertainty Quantification of Inclusion Boundaries in the Context of
X-ray Tomography
| null | null | null | null |
math.NA cs.NA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this work, we describe a Bayesian framework for reconstructing the
boundaries of piecewise smooth regions in the X-ray computed tomography (CT)
problem in an infinite-dimensional setting. In addition to the reconstruction,
we are also able to quantify the uncertainty of the predicted boundaries. Our
approach is goal oriented, meaning that we directly detect the discontinuities
from the data, instead of reconstructing the entire image. This drastically
reduces the dimension of the problem, which makes the application of Markov
Chain Monte Carlo (MCMC) methods feasible. We show that our method provides an
excellent platform for challenging X-ray CT scenarios (e.g., in case of noisy
data, limited angle, or sparse angle imaging). We investigate the performance
and accuracy of our method on synthetic data as well as on real-world data. The
numerical results indicate that our method provides an accurate method in
detecting boundaries of piecewise smooth regions and quantifies the uncertainty
in the prediction.
|
[{'version': 'v1', 'created': 'Wed, 14 Jul 2021 10:59:56 GMT'}
{'version': 'v2', 'created': 'Mon, 19 Dec 2022 09:16:23 GMT'}]
|
2022-12-20
|
[array(['Afkham', 'Babak Maboudi', ''], dtype=object)
array(['Dong', 'Yiqiu', ''], dtype=object)
array(['Hansen', 'Per Christian', ''], dtype=object)]
|
5,236 |
astro-ph/0307161
|
Sarmistha Banik
|
Sarmistha Banik and Debades Bandyopadhyay
|
Exotic phases in compact stars
|
6 pages, presented in "Strange Quarks in Matter" (SQM2003)
conference, Atlantic Beach, NC, USA, March 12-17, 2003 and to be published in
J. Phys. G
|
J.Phys.G30:S525-S530,2004
|
10.1088/0954-3899/30/1/063
|
SINP/TNP/03-13
|
astro-ph
| null |
We discuss how the co-existence of hyperons, antikaon condensate and color
superconducting quark matter in neutron star interior influences the gross
properties of compact stars such as, the equation of state and mass-radius
relationship. We compare our results with the recent observations. We also
discuss about superdense stars in the third family branch which may contain a
pure color-flavor-locked (CFL) core.
|
[{'version': 'v1', 'created': 'Wed, 9 Jul 2003 06:20:41 GMT'}]
|
2009-11-10
|
[array(['Banik', 'Sarmistha', ''], dtype=object)
array(['Bandyopadhyay', 'Debades', ''], dtype=object)]
|
5,237 |
1801.04461
|
Yiran Wu
|
Yiran Wu, Sihao Ying, Lianmin Zheng
|
Size-to-depth: A New Perspective for Single Image Depth Estimation
| null | null | null | null |
cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper we consider the problem of single monocular image depth
estimation. It is a challenging problem due to its ill-posedness nature and has
found wide application in industry. Previous efforts belongs roughly to two
families: learning-based method and interactive method. Learning-based method,
in which deep convolutional neural network (CNN) is widely used, can achieve
good result. But they suffer low generalization ability and typically perform
poorly for unfamiliar scenes. Besides, data-hungry nature for such method makes
data aquisition expensive and time-consuming. Interactive method requires human
annotation of depth which, however, is errorneous and of large variance.
To overcome these problems, we propose a new perspective for single monocular
image depth estimation problem: size to depth. Our method require sparse label
for real-world size of object rather than raw depth. A Coarse depth map is then
inferred following geometric relationships according to size labels. Then we
refine the depth map by doing energy function optimization on conditional
random field(CRF). We experimentally demonstrate that our method outperforms
traditional depth-labeling methods and can produce satisfactory depth maps.
|
[{'version': 'v1', 'created': 'Sat, 13 Jan 2018 16:14:42 GMT'}]
|
2018-01-16
|
[array(['Wu', 'Yiran', ''], dtype=object)
array(['Ying', 'Sihao', ''], dtype=object)
array(['Zheng', 'Lianmin', ''], dtype=object)]
|
5,238 |
2109.10895
|
Md Amiruzzaman
|
Suphanut Jamonnak, Ye Zhao, Xinyi Huang, and Md Amiruzzaman
|
Geo-Context Aware Study of Vision-Based Autonomous Driving Models and
Spatial Video Data
|
11 pages, 8 figures, and 1 table. This paper is accepted and to be
published in IEEE Transactions on Visualization and Computer Graphics
|
IEEE Transactions on Visualization and Computer Graphics, 2021
|
10.1109/TVCG.2021.3114853
| null |
cs.HC cs.LG
|
http://creativecommons.org/licenses/by/4.0/
|
Vision-based deep learning (DL) methods have made great progress in learning
autonomous driving models from large-scale crowd-sourced video datasets. They
are trained to predict instantaneous driving behaviors from video data captured
by on-vehicle cameras. In this paper, we develop a geo-context aware
visualization system for the study of Autonomous Driving Model (ADM)
predictions together with large-scale ADM video data. The visual study is
seamlessly integrated with the geographical environment by combining DL model
performance with geospatial visualization techniques. Model performance
measures can be studied together with a set of geospatial attributes over map
views. Users can also discover and compare prediction behaviors of multiple DL
models in both city-wide and street-level analysis, together with road images
and video contents. Therefore, the system provides a new visual exploration
platform for DL model designers in autonomous driving. Use cases and domain
expert evaluation show the utility and effectiveness of the visualization
system.
|
[{'version': 'v1', 'created': 'Fri, 20 Aug 2021 17:33:54 GMT'}]
|
2021-09-24
|
[array(['Jamonnak', 'Suphanut', ''], dtype=object)
array(['Zhao', 'Ye', ''], dtype=object)
array(['Huang', 'Xinyi', ''], dtype=object)
array(['Amiruzzaman', 'Md', ''], dtype=object)]
|
5,239 |
2004.10782
|
Gohil Thakur Dr.
|
Gohil S. Thakur, Sumanta Chattopadhyay, Thomas Doert, T.
Herrmannsd\"orfer and Claudia Felser
|
Crystal Growth of Spin-Frustrated Ba4Nb0.8Ir3.2O12: A Possible Spin
Liquid Material
|
15 pages, 6 figures + supplementary information file
|
Crystal Growth and Design, 2020 (in print)
|
10.1021/acs.cgd.0c00262
| null |
cond-mat.mtrl-sci
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Polycrystalline Ba4NbIr3O12 has recently been shown to be a promising spin
liquid candidate. We report an easy and reliable method to grow
millimeter-sized single crystals of this trimer based spin liquid candidate
material with the actual stoichiometry of Ba4Nb0.8Ir3.2O12. The growth of large
crystals is achieved using BaCl2 as flux. The crystals show hexagonal
plate-like habit with edges up to 3 mm in length. The structure is confirmed by
single crystal X-ray diffraction and is found to be the same as of previously
reported phase Ba12Nb2.4Ir9.6O36 [Ba4Nb0.8Ir3.2O12], indeed with a mixed
occupancy of Nb/Ir at 3a site. The magnetic and calorimetric study on the
individual single crystals confirms the possibility of a spin liquid state
consistent with a recent report on a polycrystalline sample
|
[{'version': 'v1', 'created': 'Wed, 22 Apr 2020 18:34:11 GMT'}]
|
2020-04-24
|
[array(['Thakur', 'Gohil S.', ''], dtype=object)
array(['Chattopadhyay', 'Sumanta', ''], dtype=object)
array(['Doert', 'Thomas', ''], dtype=object)
array(['Herrmannsdörfer', 'T.', ''], dtype=object)
array(['Felser', 'Claudia', ''], dtype=object)]
|
5,240 |
physics/0411216
|
Maury Goodman
|
Stuart J. Freedman, Boris Kayser (Co-chairs of the organizing
committee)
|
The Neutrino Matrix
|
The DNP/DPF/DAP/DPB Joint Study on the Future of Neutrino Physics
| null | null | null |
physics.pop-ph astro-ph hep-ex nucl-ex nucl-th
| null |
To answer the very interesting questions raised by the discovery of neutrino
mass, an effective, coherent strategy is needed. To foster the development of
such a strategy, the American Physical Society's Divisions of Nuclear Physics
and of Particles and Fields, together with the Divisions of Astrophysics and
the Physics of Beams, have sponsored this yearlong Study on the Physics of
Neutrinos. The study has endeavored to identify the most important open
questions, to evaluate the physics reach of various proposed ways of answering
them, and to determine an effective, fruitful U.S. role within a global
experimental program. An important -- if challenging -- goal of the study has
been to achieve consensus regarding the future of neutrino physics.
|
[{'version': 'v1', 'created': 'Tue, 23 Nov 2004 22:55:20 GMT'}
{'version': 'v2', 'created': 'Wed, 1 Dec 2004 04:08:21 GMT'}]
|
2009-09-29
|
[array(['Freedman', 'Stuart J.', '',
'Co-chairs of the organizing\n committee'], dtype=object)
array(['Kayser', 'Boris', '', 'Co-chairs of the organizing\n committee'],
dtype=object) ]
|
5,241 |
2302.03660
|
Ricky T. Q. Chen
|
Ricky T. Q. Chen, Yaron Lipman
|
Riemannian Flow Matching on General Geometries
| null | null | null | null |
cs.LG cs.AI stat.ML
|
http://creativecommons.org/licenses/by/4.0/
|
We propose Riemannian Flow Matching (RFM), a simple yet powerful framework
for training continuous normalizing flows on manifolds. Existing methods for
generative modeling on manifolds either require expensive simulation, are
inherently unable to scale to high dimensions, or use approximations for
limiting quantities that result in biased training objectives. Riemannian Flow
Matching bypasses these limitations and offers several advantages over previous
approaches: it is simulation-free on simple geometries, does not require
divergence computation, and computes its target vector field in closed-form.
The key ingredient behind RFM is the construction of a relatively simple
premetric for defining target vector fields, which encompasses the existing
Euclidean case. To extend to general geometries, we rely on the use of spectral
decompositions to efficiently compute premetrics on the fly. Our method
achieves state-of-the-art performance on real-world non-Euclidean datasets, and
we demonstrate tractable training on general geometries, including triangular
meshes with highly non-trivial curvature and boundaries.
|
[{'version': 'v1', 'created': 'Tue, 7 Feb 2023 18:21:24 GMT'}
{'version': 'v2', 'created': 'Thu, 25 May 2023 18:28:42 GMT'}]
|
2023-05-29
|
[array(['Chen', 'Ricky T. Q.', ''], dtype=object)
array(['Lipman', 'Yaron', ''], dtype=object)]
|
5,242 |
hep-th/0601064
|
Tianjun Li
|
Ching-Ming Chen, Tianjun Li, Dimitri V. Nanopoulos
|
Type IIA Pati-Salam Flux Vacua
|
RevTex4, 44 pages, 28 tables, references added, version to appear in
NPB
|
Nucl.Phys.B740:79-104,2006
|
10.1016/j.nuclphysb.2006.01.039
|
ACT-01-06, MIFP-06-02
|
hep-th hep-ph
| null |
We show that for supersymmetric AdS vacua on Type IIA orientifolds with flux
compactifications, the RR tadpole cancellation conditions can be completely
relaxed, and then the four-dimensional N=1 supersymmetry conditions are the
main constraints on consistent intersecting D6-brane model building. We
construct two kinds of three-family Pati-Salam models. In the first kind of
models, the suitable three-family SM fermion masses and mixings can be
generated at the stringy tree level, and then the rank one problem for the SM
fermion Yukawa matrices can be solved. In the second kind of models, only the
third family of the SM fermions can obtain masses at tree level. In these
models, the complex structure parameters can be determined by supersymmetric
D6-brane configurations, and all the moduli may be stabilized. The initial
gauge symmetries U(4)_C \times U(2)_L \times U(2)_R and U(4)_C \times USp(2)_L
\times U(2)_R can be broken down to the SU(3)_C \times SU(2)_L \times
U(1)_{B-L} \times U(1)_{I_{3R}} due to the Green-Schwarz mechanism and D6-brane
splittings, and further down to the SM gauge symmetry around the string scale
via the supersymmetry preserving Higgs mechanism. Comparing to the previous
model building, we have less bidoublet Higgs fields. However, there generically
exist some exotic particles.
|
[{'version': 'v1', 'created': 'Tue, 10 Jan 2006 22:06:20 GMT'}
{'version': 'v2', 'created': 'Mon, 30 Jan 2006 20:55:54 GMT'}]
|
2008-11-26
|
[array(['Chen', 'Ching-Ming', ''], dtype=object)
array(['Li', 'Tianjun', ''], dtype=object)
array(['Nanopoulos', 'Dimitri V.', ''], dtype=object)]
|
5,243 |
2205.02902
|
Rambod Mojgani
|
Rambod Mojgani and Maciej Balajewicz and Pedram Hassanzadeh
|
Lagrangian PINNs: A causality-conforming solution to failure modes of
physics-informed neural networks
|
15 pages, 12 figures
| null |
10.1016/j.cma.2022.115810
| null |
cs.LG cs.CE cs.NA math.NA physics.comp-ph stat.ML
|
http://creativecommons.org/licenses/by-nc-nd/4.0/
|
Physics-informed neural networks (PINNs) leverage neural-networks to find the
solutions of partial differential equation (PDE)-constrained optimization
problems with initial conditions and boundary conditions as soft constraints.
These soft constraints are often considered to be the sources of the complexity
in the training phase of PINNs. Here, we demonstrate that the challenge of
training (i) persists even when the boundary conditions are strictly enforced,
and (ii) is closely related to the Kolmogorov n-width associated with problems
demonstrating transport, convection, traveling waves, or moving fronts. Given
this realization, we describe the mechanism underlying the training schemes
such as those used in eXtended PINNs (XPINN), curriculum regularization, and
sequence-to-sequence learning. For an important category of PDEs, i.e.,
governed by non-linear convection-diffusion equation, we propose reformulating
PINNs on a Lagrangian frame of reference, i.e., LPINNs, as a PDE-informed
solution. A parallel architecture with two branches is proposed. One branch
solves for the state variables on the characteristics, and the second branch
solves for the low-dimensional characteristics curves. The proposed
architecture conforms to the causality innate to the convection, and leverages
the direction of travel of the information in the domain. Finally, we
demonstrate that the loss landscapes of LPINNs are less sensitive to the
so-called "complexity" of the problems, compared to those in the traditional
PINNs in the Eulerian framework.
|
[{'version': 'v1', 'created': 'Thu, 5 May 2022 19:48:05 GMT'}]
|
2022-12-09
|
[array(['Mojgani', 'Rambod', ''], dtype=object)
array(['Balajewicz', 'Maciej', ''], dtype=object)
array(['Hassanzadeh', 'Pedram', ''], dtype=object)]
|
5,244 |
cond-mat/0408500
|
Sergei Khlebnikov
|
S. Khlebnikov
|
Tunneling in a uniform one-dimensional superfluid: emergence of a
complex instanton
|
15 pages, 3 figures; to be published in Phys. Rev. A
|
Phys. Rev. A 71, 013602 (2005)
|
10.1103/PhysRevA.71.013602
| null |
cond-mat.other cond-mat.soft
| null |
In a uniform ring-shaped one-dimensional superfluid, quantum fluctuations
that unwind the order parameter need to transfer momentum to quasiparticles
(phonons). We present a detailed calculation of the leading exponential factor
governing the rate of such phonon-assisted tunneling in a weakly-coupled Bose
gas at a low temperature $T$. We also estimate the preexponent. We find that
for small superfluid velocities the $T$-dependence of the rate is given mainly
by $\exp(-c_s P/ 2T)$, where $P$ is the momentum transfer, and $c_s$ is the
phonon speed. At low $T$, this represents a strong suppression of the rate,
compared to the non-uniform case. As a part of our calculation, we identify a
complex instanton, whose analytical continuation to suitable real-time segments
is real and describes formation and decay of coherent quasiparticle states with
nonzero total momenta.
|
[{'version': 'v1', 'created': 'Tue, 24 Aug 2004 18:01:31 GMT'}
{'version': 'v2', 'created': 'Mon, 15 Nov 2004 20:57:01 GMT'}]
|
2009-11-10
|
[array(['Khlebnikov', 'S.', ''], dtype=object)]
|
5,245 |
2107.00626
|
Pavel Terekhin
|
M. Sch\"afer (1), P.N. Terekhin (2), Y. Kang (1), G. Torosyan (1), X.
del Arco Fargas (2), S. Hirtle (2), B. Rethfeld (2) and J.A. L'huillier (1)
((1) Photonik-Zentrum Kaiserslautern e.V., (2) TU Kaiserslautern)
|
Magnetic-field assisted laser ablation of silicon
| null | null |
10.1364/JOSAB.433104
| null |
physics.optics physics.app-ph
|
http://creativecommons.org/licenses/by/4.0/
|
Understanding and manipulation of the laser processing quality during the
ablation of solids have crucial importance from fundamental and industrial
perspectives. Here we have studied the effect of external magnetic field on the
micro-material processing of silicon by ultrashort laser pulses. It was found
experimentally that such a field directed along the laser beam improves the
quality and efficiency of the material removal. Additionally, we observe that
the formation of laser-induced periodic surface structures (LIPSS) in a
multi-pulse regime is affected by the external magnetic field. Our results open
a route towards efficient and controllable ultrafast laser micromachining.
|
[{'version': 'v1', 'created': 'Thu, 1 Jul 2021 17:29:42 GMT'}]
|
2021-11-24
|
[array(['Schäfer', 'M.', '', 'Photonik-Zentrum Kaiserslautern e.V'],
dtype=object)
array(['Terekhin', 'P. N.', '', 'TU Kaiserslautern'], dtype=object)
array(['Kang', 'Y.', '', 'Photonik-Zentrum Kaiserslautern e.V'],
dtype=object)
array(['Torosyan', 'G.', '', 'Photonik-Zentrum Kaiserslautern e.V'],
dtype=object)
array(['Fargas', 'X. del Arco', '', 'TU Kaiserslautern'], dtype=object)
array(['Hirtle', 'S.', '', 'TU Kaiserslautern'], dtype=object)
array(['Rethfeld', 'B.', '', 'TU Kaiserslautern'], dtype=object)
array(["L'huillier", 'J. A.', '', 'Photonik-Zentrum Kaiserslautern e.V'],
dtype=object) ]
|
5,246 |
1712.03686
|
Maria Perez-Ortiz
|
Maria Perez-Ortiz and Rafal K. Mantiuk
|
A practical guide and software for analysing pairwise comparison
experiments
|
Code available at https://github.com/mantiuk/pwcmp
| null | null | null |
stat.AP cs.CV cs.GR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Most popular strategies to capture subjective judgments from humans involve
the construction of a unidimensional relative measurement scale, representing
order preferences or judgments about a set of objects or conditions. This
information is generally captured by means of direct scoring, either in the
form of a Likert or cardinal scale, or by comparative judgments in pairs or
sets. In this sense, the use of pairwise comparisons is becoming increasingly
popular because of the simplicity of this experimental procedure. However, this
strategy requires non-trivial data analysis to aggregate the comparison ranks
into a quality scale and analyse the results, in order to take full advantage
of the collected data. This paper explains the process of translating pairwise
comparison data into a measurement scale, discusses the benefits and
limitations of such scaling methods and introduces a publicly available
software in Matlab. We improve on existing scaling methods by introducing
outlier analysis, providing methods for computing confidence intervals and
statistical testing and introducing a prior, which reduces estimation error
when the number of observers is low. Most of our examples focus on image
quality assessment.
|
[{'version': 'v1', 'created': 'Mon, 11 Dec 2017 09:21:36 GMT'}
{'version': 'v2', 'created': 'Fri, 15 Dec 2017 14:43:34 GMT'}]
|
2017-12-18
|
[array(['Perez-Ortiz', 'Maria', ''], dtype=object)
array(['Mantiuk', 'Rafal K.', ''], dtype=object)]
|
5,247 |
2304.03734
|
Irene Ren
|
Irene Ren
|
Mirzakhani's frequencies of simple closed geodesics on hyperbolic
surfaces in large genus and with many cusps
|
12 pages
| null | null | null |
math.GT math.DG math.PR
|
http://creativecommons.org/licenses/by/4.0/
|
We present a proof of a conjecture proposed by V. Delecroix, E. Goujard, P.
Zograf, and A. Zorich, which describes the large genus asymptotic behaviours of
the ratio of frequencies of separating over nonseparating simple closed
geodesics on a closed hyperbolic surface of genus $g$ with $n$ cusps. We
explicitly give the function $f(\frac{n}{g})$ in the conjecture. The moderate
behaviour of the frequencies with respect to the growth rate of the number of
cusps compared to that of the genus drastically contrasts with the behaviour of
other geometric quantities and exhibits the topological nature of the
frequencies.
|
[{'version': 'v1', 'created': 'Fri, 7 Apr 2023 17:03:23 GMT'}]
|
2023-04-10
|
[array(['Ren', 'Irene', ''], dtype=object)]
|
5,248 |
1407.0666
|
Luca Giomi
|
H. S. Fisher, L. Giomi, H. E. Hoekstra, L. Mahadevan
|
The dynamics of sperm cooperation in a competitive environment
|
21 pages, 7 figures
| null | null | null |
q-bio.CB cond-mat.soft physics.bio-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Sperm cooperation has evolved in a variety of taxa and is often considered a
response to sperm competition, yet the benefit of this form of collective
movement remains unclear. Here we use fine-scale imaging and a minimal
mathematical model to study sperm aggregation in the rodent genus $Peromyscus$.
We demonstrate that as the number of sperm cells in an aggregate increase, the
group moves with more persistent linearity but without increasing speed; this
benefit, however, is offset in larger aggregates as the geometry of the group
forces sperm to swim against one another. The result is a non-monotonic
relationship between aggregate size and average velocity with both a
theoretically predicted and empirically observed optimum of 6-7
sperm/aggregate. To understand the role of sexual selection in driving these
sperm group dynamics, we compared two sister-species with divergent mating
systems and find that sperm of $P.\,maniculatus$ (highly promiscuous), which
have evolved under intense competition, form optimal-sized aggregates more
often than sperm of $P.\,polionotus$ (strictly monogamous), which lack
competition. Our combined mathematical and experimental study of coordinated
sperm movement reveals the importance of geometry, motion and group size on
sperm velocity and suggests how these physical variables interact with
evolutionary selective pressures to regulate cooperation in competitive
environments.
|
[{'version': 'v1', 'created': 'Wed, 2 Jul 2014 18:07:32 GMT'}]
|
2014-07-03
|
[array(['Fisher', 'H. S.', ''], dtype=object)
array(['Giomi', 'L.', ''], dtype=object)
array(['Hoekstra', 'H. E.', ''], dtype=object)
array(['Mahadevan', 'L.', ''], dtype=object)]
|
5,249 |
0708.2827
|
Dimitris Stamatellos
|
Dimitris Stamatellos, David Hubber, Anthony Whitworth (School of
Physics & Astronomy, Cardiff University, UK)
|
Brown dwarf formation by gravitational fragmentation of massive,
extended protostellar discs
|
5 pages, accepted for publication in MNRAS Letters
| null |
10.1111/j.1745-3933.2007.00383.x
| null |
astro-ph
| null |
We suggest that low-mass hydrogen-burning stars like the Sun should sometimes
form with massive extended discs; and we show, by means of radiation
hydrodynamic simulations, that the outer parts of such discs (R>100 AU) are
likely to fragment on a dynamical timescale (10^3 to $10^4 yr), forming
low-mass companions: principally brown dwarfs (BDs), but also very low-mass
hydrogen-burning stars and planetary-mass objects. A few of the BDs formed in
this way remain attached to the primary star, orbiting at large radii. The
majority are released into the field, by interactions amongst themselves; in so
doing they acquire only a low velocity dispersion (<2 km/s), and therefore they
usually retain small discs, capable of registering an infrared excess and
sustaining accretion. Some BDs form close BD/BD binaries, and these binaries
can survive ejection into the field. This BD formation mechanism appears to
avoid some of the problems associated with the `embryo ejection' scenario, and
to answer some of the questions not yet answered by the `turbulent
fragmentation' scenario.
|
[{'version': 'v1', 'created': 'Tue, 21 Aug 2007 12:52:34 GMT'}]
|
2009-11-13
|
[array(['Stamatellos', 'Dimitris', '',
'School of\n Physics & Astronomy, Cardiff University, UK'],
dtype=object)
array(['Hubber', 'David', '',
'School of\n Physics & Astronomy, Cardiff University, UK'],
dtype=object)
array(['Whitworth', 'Anthony', '',
'School of\n Physics & Astronomy, Cardiff University, UK'],
dtype=object) ]
|
5,250 |
nucl-th/9706079
|
Mikhail Krivoruchenko
|
Amand Faessler (IKP der Uni, Tuebingen), M. I. Krivoruchenko and B. V.
Martemyanov (IKP der Uni, Tuebingen and ITEP, Moscow)
|
Condensation of Dibaryons in Nuclear Matter and Its Possible Signatures
in Heavy Ion Collisions
|
9 pages, 3 figures
| null | null | null |
nucl-th
| null |
We consider the thermodynamics of the matter made up of equal number of
neutrons and protons and of scalar dibaryons. They interact via the exchange of
scalar and vector mesons. The interaction is taken into account in the mean
field approximation. The condensation of dibaryons in this matter and the phase
transition of matter to quark matter are considered. Possible signatures of
dibaryons in Heavy Ion Collisions are speculated on.
|
[{'version': 'v1', 'created': 'Fri, 27 Jun 1997 19:45:54 GMT'}
{'version': 'v2', 'created': 'Sat, 28 Jun 1997 12:54:28 GMT'}]
|
2008-02-03
|
[array(['Faessler', 'Amand', '', 'IKP der Uni, Tuebingen'], dtype=object)
array(['Krivoruchenko', 'M. I.', '',
'IKP der Uni, Tuebingen and ITEP, Moscow'], dtype=object)
array(['Martemyanov', 'B. V.', '',
'IKP der Uni, Tuebingen and ITEP, Moscow'], dtype=object)]
|
5,251 |
2305.12388
|
Sen-Yue Lou
|
S. Y. Lou
|
Ren-integrable and ren-symmetric integrable systems
|
20 pages
| null | null | null |
nlin.SI math-ph math.MP nlin.PS
|
http://creativecommons.org/licenses/by/4.0/
|
A new type of symmetry, ren-symmetry describing anyon physics and the
corresponding topological physics, is proposed. Ren-symmetry is a
generalization of super-symmetry which is widely applied in super-symmetric
physics such as the super-symmetric quantum mechanics, super-symmetric gravity,
super-symmetric string theory, super-symmetric integrable systems and so on.
The super-symmetry and Grassmann-number are, in some sense, the dual
conceptions, which turns out that these conceptions coincide for the ren
situation, that is, a similar conception of ren-number is devised to
ren-symmetry. In particular, some basic results of the ren-number and
ren-symmetry are exposed which allow one to derive, in principle, some new
types of integrable systems including ren-integrable models and ren-symmetric
integrable systems. Training examples of ren-integrable KdV type systems and
ren-symmetric KdV equations are explicitly given.
|
[{'version': 'v1', 'created': 'Sun, 21 May 2023 07:58:23 GMT'}]
|
2023-05-23
|
[array(['Lou', 'S. Y.', ''], dtype=object)]
|
5,252 |
1705.10579
|
Stefano Dafarra
|
Stefano Dafarra, Francesco Romano and Francesco Nori
|
Torque-Controlled Stepping-Strategy Push Recovery: Design and
Implementation on the iCub Humanoid Robot
| null | null |
10.1109/HUMANOIDS.2016.7803271
| null |
cs.RO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
One of the challenges for the robotics community is to deploy robots which
can reliably operate in real world scenarios together with humans. A crucial
requirement for legged robots is the capability to properly balance on their
feet, rejecting external disturbances. iCub is a state-of-the-art humanoid
robot which has only recently started to balance on its feet. While the current
balancing controller has proved successful in various scenarios, it still
misses the capability to properly react to strong pushes by taking steps. This
paper goes in this direction. It proposes and implements a control strategy
based on the Capture Point concept [1]. Instead of relying on position control,
like most of Capture Point related approaches, the proposed strategy generates
references for the momentum-based torque controller already implemented on the
iCub, thus extending its capabilities to react to external disturbances, while
retaining the advantages of torque control when interacting with the
environment. Experiments in the Gazebo simulator and on the iCub humanoid robot
validate the proposed strategy.
|
[{'version': 'v1', 'created': 'Tue, 30 May 2017 12:27:59 GMT'}]
|
2017-05-31
|
[array(['Dafarra', 'Stefano', ''], dtype=object)
array(['Romano', 'Francesco', ''], dtype=object)
array(['Nori', 'Francesco', ''], dtype=object)]
|
5,253 |
2306.11097
|
Xing Wang
|
Alexander Belyaev, R. Sekhar Chivukula, Benjamin Fuks, Elizabeth H.
Simmons, Xing Wang
|
Vector-Like Top Quark Production via an Electroweak Dipole Moment at a
Muon Collider
|
37 pages, 11 figures, 1 table
| null | null | null |
hep-ph hep-ex
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Vectorial partners of the Standard Model quarks and leptons are predicted in
many dynamical models of electroweak symmetry breaking. The most easily
accessible of these new particles, either due to mass or couplings, are
typically expected to be the partners of the third-generation fermions. It is
therefore essential to explore the signatures of these particles at future
high-energy colliders. We study the potential of a high-energy muon collider to
singly produce a vector-like top-quark partner via an electroweak dipole moment
operator, such an operator being typical of composite constructions beyond the
Standard Model. We use a phenomenological model for third-generation quarks and
their partners that satisfies an extended custodial symmetry. This
automatically protects the $W$-boson and $Z$-boson masses from receiving large
electroweak corrections, and it allows the model to be viable given current
electroweak data. We demonstrate that cross sections associated with
dipole-induced vector-like quark production can easily exceed those inherent to
more conventional single-production modes via ordinary electroweak couplings.
We then explore the associated phenomenology, and we show that at least one
(and often more than one) of the extra vector-like states can be studied at
high-energy muon colliders. Typical accessible masses are found to range up to
close to the kinematic production threshold, when the vector-like partners are
produced in combination with an ordinary top quark.
|
[{'version': 'v1', 'created': 'Mon, 19 Jun 2023 18:00:52 GMT'}]
|
2023-06-21
|
[array(['Belyaev', 'Alexander', ''], dtype=object)
array(['Chivukula', 'R. Sekhar', ''], dtype=object)
array(['Fuks', 'Benjamin', ''], dtype=object)
array(['Simmons', 'Elizabeth H.', ''], dtype=object)
array(['Wang', 'Xing', ''], dtype=object)]
|
5,254 |
1508.07914
|
Sergey Nadtochiy
|
Roman Gayduk and Sergey Nadtochiy
|
Liquidity Effects of Trading Frequency
|
Accepted in Mathematical Finance
| null | null | null |
q-fin.TR q-fin.MF
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this article, we present a discrete time modeling framework, in which the
shape and dynamics of a Limit Order Book (LOB) arise endogenously from an
equilibrium between multiple market participants (agents). We use the proposed
modeling framework to analyze the effects of trading frequency on market
liquidity in a very general setting. In particular, we demonstrate the dual
effect of high trading frequency. On the one hand, the higher frequency
increases market efficiency, if the agents choose to provide liquidity in
equilibrium. On the other hand, it also makes markets more fragile, in the
sense that the agents choose to provide liquidity in equilibrium only if they
are market-neutral (i.e., their beliefs satisfy certain martingale property).
Even a very small deviation from market-neutrality may cause the agents to stop
providing liquidity, if the trading frequency is sufficiently high, which
represents an endogenous liquidity crisis (aka flash crash) in the market. This
framework enables us to provide more insight into how such a liquidity crisis
unfolds, connecting it to the so-called adverse selection effect.
|
[{'version': 'v1', 'created': 'Mon, 31 Aug 2015 16:53:11 GMT'}
{'version': 'v2', 'created': 'Tue, 31 May 2016 17:02:48 GMT'}
{'version': 'v3', 'created': 'Fri, 4 Nov 2016 21:51:18 GMT'}
{'version': 'v4', 'created': 'Tue, 9 May 2017 03:34:15 GMT'}]
|
2017-05-10
|
[array(['Gayduk', 'Roman', ''], dtype=object)
array(['Nadtochiy', 'Sergey', ''], dtype=object)]
|
5,255 |
1906.01948
|
Mee Seong Im
|
Mee Seong Im, Shifra Reif, Vera Serganova
|
Grothendieck rings of periplectic Lie superalgebras
|
13 pages
| null | null | null |
math.RT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We describe explicitly the Grothendieck rings of finite-dimensional
representations of the periplectic Lie superalgebras. In particular, the
Grothendieck ring of the Lie supergroup $P(n)$ is isomorphic to the ring of
symmetric polynomials in $x_1^{\pm 1}, \ldots, x_n^{\pm 1}$ whose evaluation
$x_1=x_2^{-1}=t$ is independent of $t$.
|
[{'version': 'v1', 'created': 'Wed, 5 Jun 2019 11:24:55 GMT'}]
|
2019-06-06
|
[array(['Im', 'Mee Seong', ''], dtype=object)
array(['Reif', 'Shifra', ''], dtype=object)
array(['Serganova', 'Vera', ''], dtype=object)]
|
5,256 |
0705.0862
|
Quesne Christiane
|
C. Quesne
|
Spectrum generating algebras for position-dependent mass oscillator
Schrodinger equations
|
21 pages, no figure, 2 misprints corrected; published version
|
J. Phys. A: Math. Theor. 40 (2007) 13107-13119
|
10.1088/1751-8113/40/43/018
|
ULB/229/CQ/07/3
|
math-ph math.MP math.QA quant-ph
| null |
The interest of quadratic algebras for position-dependent mass Schr\"odinger
equations is highlighted by constructing spectrum generating algebras for a
class of d-dimensional radial harmonic oscillators with $d \ge 2$ and a
specific mass choice depending on some positive parameter $\alpha$. Via some
minor changes, the one-dimensional oscillator on the line with the same kind of
mass is included in this class. The existence of a single unitary irreducible
representation belonging to the positive-discrete series type for $d \ge 2$ and
of two of them for d=1 is proved. The transition to the constant-mass limit
$\alpha \to 0$ is studied and deformed su(1,1) generators are constructed.
These operators are finally used to generate all the bound-state wavefunctions
by an algebraic procedure.
|
[{'version': 'v1', 'created': 'Mon, 7 May 2007 07:48:08 GMT'}
{'version': 'v2', 'created': 'Tue, 7 Aug 2007 14:34:29 GMT'}
{'version': 'v3', 'created': 'Tue, 9 Oct 2007 14:45:44 GMT'}]
|
2009-11-13
|
[array(['Quesne', 'C.', ''], dtype=object)]
|
5,257 |
2209.06070
|
Marek Czachor
|
Marek Czachor
|
Cosmic-time quantum mechanics and the passage-of-time problem
| null |
Universe 2023, 9(4), 188
|
10.3390/universe9040188
| null |
physics.gen-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A new dynamical paradigm merging quantum dynamics with cosmology is
discussed. Time evolution involves a genuine passage of time, which
distinguishes the formalism from those where dynamics in space is equivalent to
statics in space-time. Hyperbolic spatial sections occur as asymptotic
large-cosmic-time supports of quantum wave functions. For simplicity, the wave
functions are defined on $n$-dimensional Minkowski spaces. We begin with empty
universe, but then outline the formalism that involves matter fields. As a
by-product, we arrive at a new formulation of conformal invariance of $m\neq 0$
fields.
|
[{'version': 'v1', 'created': 'Fri, 1 Jul 2022 16:54:25 GMT'}
{'version': 'v2', 'created': 'Thu, 15 Sep 2022 04:37:03 GMT'}
{'version': 'v3', 'created': 'Wed, 11 Jan 2023 06:55:23 GMT'}]
|
2023-05-03
|
[array(['Czachor', 'Marek', ''], dtype=object)]
|
5,258 |
1311.2806
|
Matthias Gorny
|
Matthias Gorny
|
The Cram\'er Condition for the Curie-Weiss Model of SOC
|
Extension of the results of arXiv:1301.6911
| null | null | null |
math.PR math-ph math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We pursue the study of the Curie-Weiss model of self-organized criticality we
designed in arXiv:1301.6911. We extend our results to more general interaction
functions and we prove that, for a class of symmetric distributions satisfying
a Cram\'er condition $(C)$ and some integrability hypothesis, the sum $S_{n}$
of the random variables behaves as in the typical critical generalized Ising
Curie-Weiss model. The fluctuations are of order $n^{3/4}$ and the limiting law
is $k \exp(-\lambda x^{4})\,dx$ where $k$ and $\lambda$ are suitable positive
constants. In arXiv:1301.6911 we obtained these results only for distributions
having an even density.
|
[{'version': 'v1', 'created': 'Tue, 12 Nov 2013 15:12:28 GMT'}
{'version': 'v2', 'created': 'Tue, 7 Oct 2014 13:55:47 GMT'}]
|
2014-10-08
|
[array(['Gorny', 'Matthias', ''], dtype=object)]
|
5,259 |
1712.01280
|
Michael Shull
|
J. Michael Shull and Charles W. Danforth
|
The Dispersion of Fast Radio Bursts from a Structured Intergalactic
Medium at Redshifts z < 1.5
|
8 pages, 2 figures, submitted to Astrophysical Journal
| null |
10.3847/2041-8213/aaa2fa
| null |
astro-ph.CO astro-ph.GA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We analyze the sources of free electrons that produce the large dispersion
measures, DM $\approx 300-1600$ (in units cm$^{-3}$ pc), observed toward fast
radio bursts (FRBs). Individual galaxies typically produce DM $\sim 25-60$
cm$^{-3}$ pc from ionized gas in their disk, disk-halo interface, and
circumgalactic medium. Toward an FRB source at redshift $z$, a homogeneous IGM
containing a fraction $f_{\rm IGM}$ of cosmological baryons will produce DM $=
(935~{\rm cm}^{-3}~{\rm pc}) f_{\rm IGM} \, h_{70}^{-1} I(z)$, where $I(z) =
(2/3 \Omega_m)[ \{ \Omega_m(1+z)^3 + \Omega_{\Lambda} \}^{1/2} - 1 ]$. A
structured IGM of photoionized Ly-alpha absorbers in the cosmic web produces
similar dispersion, modeled from the observed distribution, $f_b(N,z)$, of H I
(Lya-forest) absorbers in column density and redshift with ionization
corrections and scaling relations from cosmological simulations. An analytic
formula for DM($z$) applied to observed FRB dispersions suggests that $z_{\rm
FRB} \approx 0.2-1.5$ for an IGM containing a significant baryon fraction,
$f_{\rm IGM} = 0.6\pm0.1$. Future surveys of the statistical distribution,
DM($z)$, of FRBs identified with specific galaxies and redshifts, can be used
to calibrate the IGM baryon fraction and distribution of Ly-alpha absorbers.
Fluctuations in DM at the level $\pm10$ cm$^{-3}$ pc will arise from filaments
and voids in the cosmic web.
|
[{'version': 'v1', 'created': 'Mon, 4 Dec 2017 19:00:00 GMT'}]
|
2018-01-10
|
[array(['Shull', 'J. Michael', ''], dtype=object)
array(['Danforth', 'Charles W.', ''], dtype=object)]
|
5,260 |
1604.02213
|
Peng-Wei Zhao
|
Jie Meng and Pengwei Zhao
|
Nuclear chiral and magnetic rotation in covariant density functional
theory
|
21 pages, 19 figures, an invited comment to Physica Scripta to the
Focus Issue on Nuclear Structure: Celebrating the 75 Nobel Prize, in press
| null |
10.1088/0031-8949/91/5/053008
| null |
nucl-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Excitations of chiral rotation observed in triaxial nuclei and magnetic
and/or antimagnetic rotations seen in near-spherical nuclei have attracted a
lot of attention. Unlike conventional rotation in well-deformed or
superdeformed nuclei, here the rotational axis is not necessary coinciding with
any principal axis of the nuclear density distribution. Thus, tilted axis
cranking is mandatory to describe these excitations self-consistently in the
framework of covariant density functional theory (CDFT). We will briefly
introduce the formalism of tilted axis cranking CDFT and its application for
magnetic and antimagnetic rotation phenomena. Configuration-fixed CDFT and its
predictions for nuclear chiral configurations and for favorable triaxial
deformation parameters are also presented, and the discoveries of the multiple
chiral doublets (M\c{hi}D) in 133Ce and 103Rh are discussed.
|
[{'version': 'v1', 'created': 'Fri, 8 Apr 2016 02:26:08 GMT'}]
|
2016-05-04
|
[array(['Meng', 'Jie', ''], dtype=object)
array(['Zhao', 'Pengwei', ''], dtype=object)]
|
5,261 |
cond-mat/0205097
|
Christian Beck
|
C. Beck, E. G. D. Cohen
|
Superstatistics
|
12 pages /a few more references and comments added in revised version
| null |
10.1016/S0378-4371(03)00019-0
| null |
cond-mat.stat-mech
| null |
We consider nonequilibrium systems with complex dynamics in stationary states
with large fluctuations of intensive quantities (e.g. the temperature, chemical
potential, or energy dissipation) on long time scales. Depending on the
statistical properties of the fluctuations, we obtain different effective
statistical mechanics descriptions. Tsallis statistics is one, but other
classes of generalized statistics are obtained as well. We show that for small
variance of the fluctuations all these different statistics behave in a
universal way.
|
[{'version': 'v1', 'created': 'Mon, 6 May 2002 14:26:40 GMT'}
{'version': 'v2', 'created': 'Thu, 14 Nov 2002 10:35:16 GMT'}]
|
2009-11-07
|
[array(['Beck', 'C.', ''], dtype=object)
array(['Cohen', 'E. G. D.', ''], dtype=object)]
|
5,262 |
1704.00598
|
Deng Pan
|
Deng Pan, Hong-Xing Xu
|
Gravitational field around blackhole induces photonic spin-orbit
interaction that twists light
| null | null | null | null |
gr-qc physics.optics
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The spin-orbit interaction (SOI) of light has been intensively studied in
nanophotonics because it enables sensitive control of photons' spin degree of
freedom and thereby the trajectory of the photons, which is useful for
applications such as signal encoding and routing. A recent study showed that
the SOI of photons manifests in the presence of a gradient in the permittivity
of the medium through which the photons propagate; this enhances the scattering
of circularly polarized light and results in the photons propagating along
twisted trajectories. Here we theoretically predict that, because of the
equivalence between an inhomogeneous dielectric medium and a gravitational
field demonstrated in transformation optics, a significant SOI is induced onto
circularly polarized light passing by the gravitational lens of a black hole.
This leads to: i) the photons to propagate along chiral trajectories if the
size of the blackhole is smaller than the wavelength of the incident photons,
ii) the resulting image of the gravitational lens to manifest an azimuthal
rotation because of these chiral trajectories. The findings open for a way to
probe for and discover subwavelength-size black holes using circularly
polarized light.
|
[{'version': 'v1', 'created': 'Wed, 29 Mar 2017 15:05:14 GMT'}]
|
2017-04-04
|
[array(['Pan', 'Deng', ''], dtype=object)
array(['Xu', 'Hong-Xing', ''], dtype=object)]
|
5,263 |
1203.0111
|
Anatolij Dvurecenskij
|
Anatolij Dvurecenskij, Yongjian Xie
|
Atomic Effect Algebras with the Riesz Decomposition Property
| null | null |
10.1007/s10701-012-9655-7
| null |
math.AC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We discuss the relationships between effect algebras with the Riesz
Decomposition Property and partially ordered groups with interpolation. We show
that any $\sigma$-orthocomplete atomic effect algebra with the Riesz
Decomposition Property is an MV-effect algebras, and we apply this result for
pseudo-effect algebras and for states.
|
[{'version': 'v1', 'created': 'Thu, 1 Mar 2012 07:59:00 GMT'}]
|
2015-06-04
|
[array(['Dvurecenskij', 'Anatolij', ''], dtype=object)
array(['Xie', 'Yongjian', ''], dtype=object)]
|
5,264 |
2008.08295
|
Jungkyoung Lee
|
Jungkyoung Lee, Insuk Seo
|
Non-reversible Metastable Diffusions with Gibbs Invariant Measure II:
Markov Chain Convergence
|
39 pages, 4 figures (the article is significantly revised at
2022-07-20; the resolvent approach is used to simplify the argument)
| null | null | null |
math.PR math.AP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This article considers a class of metastable non-reversible diffusion
processes whose invariant measure is a Gibbs measure associated with a Morse
potential. In a companion paper [32], we proved the Eyring-Kramers formula for
the corresponding class of metastable diffusion processes. In this article, we
further develop this result by proving that a suitably time-rescaled metastable
diffusion process converges to a Markov chain on the deepest metastable
valleys. This article is also an extension of [45], which considered the same
problem for metastable reversible diffusion processes. Our proof is based on
the recently developed resolvent approach to metastability.
|
[{'version': 'v1', 'created': 'Wed, 19 Aug 2020 06:54:18 GMT'}
{'version': 'v2', 'created': 'Mon, 9 Aug 2021 03:29:42 GMT'}
{'version': 'v3', 'created': 'Tue, 19 Jul 2022 17:08:51 GMT'}]
|
2022-07-20
|
[array(['Lee', 'Jungkyoung', ''], dtype=object)
array(['Seo', 'Insuk', ''], dtype=object)]
|
5,265 |
1207.2132
|
David Hume
|
David Hume
|
Embedding mapping class groups into finite products of trees
|
29 pages, 19 figures, to appear in Groups Geom. Dyn
| null | null | null |
math.MG math.GR math.GT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We prove the equivalence between a relative bottleneck property and being
quasi-isometric to a tree-graded space. As a consequence, we deduce that the
quasi-trees of spaces defined axiomatically by Bestvina-Bromberg-Fujiwara are
quasi-isometric to tree-graded spaces. Using this we prove that mapping class
groups quasi-isometrically embed into a finite product of simplicial trees. In
particular, these groups have finite Assouad-Nagata dimension, direct
embeddings exhibiting $\ell^p$ compression exponent $1$ for all $p\geq 1$ and
they quasi-isometrically embed into $\ell^1(\mathbb N)$. We deduce similar
consequences for relatively hyperbolic groups whose parabolic subgroups satisfy
such conditions.
In obtaining these results we also demonstrate that curve complexes of
compact surfaces and coned-off graphs of relatively hyperbolic groups admit
quasi-isometric embeddings into finite products of trees.
|
[{'version': 'v1', 'created': 'Mon, 9 Jul 2012 19:19:59 GMT'}
{'version': 'v2', 'created': 'Tue, 23 Oct 2012 14:25:52 GMT'}
{'version': 'v3', 'created': 'Mon, 19 Nov 2012 09:24:30 GMT'}
{'version': 'v4', 'created': 'Wed, 25 Jan 2017 09:03:51 GMT'}]
|
2017-01-26
|
[array(['Hume', 'David', ''], dtype=object)]
|
5,266 |
2112.04012
|
Ashton Bradley
|
Ashton S. Bradley, R. Kishor Kumar, Sukla Pal, Xiaoquan Yu
|
Spectral analysis for compressible quantum fluids
|
17 pages. Fixed error in appendix C presentation, added references.
Results and conclusions unchanged
|
Phys. Rev. A 106, 043322 (2022)
|
10.1103/PhysRevA.106.043322
| null |
cond-mat.quant-gas math-ph math.MP quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Turbulent fluid dynamics typically involves excitations on many different
length scales. Classical incompressible fluids can be cleanly represented in
Fourier space enabling spectral analysis of energy cascades and other
turbulence phenomena. In quantum fluids, additional phase information and
singular behaviour near vortex cores thwarts the direct extension of standard
spectral techniques. We develop a formal and numerical spectral analysis for
$U(1)$ symmetry-breaking quantum fluids suitable for analyzing turbulent flows,
with specific application to the Gross-Pitaevskii fluid. Our analysis builds
naturally on the canonical approach to spectral analysis of velocity fields in
compressible quantum fluids, and establishes a clear correspondence between
energy spectral densities, power spectral densities, and autocorrelation
functions, applicable to energy residing in velocity, quantum pressure,
interaction, and potential energy of the fluid. Our formulation includes all
quantum phase information and also enables arbitrary resolution spectral
analysis, a valuable feature for numerical analysis. A central vortex in a
trapped planar Bose-Einstein condensate provides an analytically tractable
example with spectral features of interest in both the infrared and ultraviolet
regimes. Sampled distributions modelling the dipole gas, plasma, and clustered
regimes exhibit velocity correlation length increasing with vortex energy,
consistent with known qualitative behaviour across the vortex clustering
transition. The spectral analysis of compressible quantum fluids presented here
offers a rigorous tool for analysing quantum features of superfluid turbulence
in atomic or polariton condensates.
|
[{'version': 'v1', 'created': 'Tue, 7 Dec 2021 21:54:07 GMT'}
{'version': 'v2', 'created': 'Wed, 17 Aug 2022 04:28:45 GMT'}
{'version': 'v3', 'created': 'Tue, 11 Oct 2022 01:01:46 GMT'}]
|
2022-11-02
|
[array(['Bradley', 'Ashton S.', ''], dtype=object)
array(['Kumar', 'R. Kishor', ''], dtype=object)
array(['Pal', 'Sukla', ''], dtype=object)
array(['Yu', 'Xiaoquan', ''], dtype=object)]
|
5,267 |
2103.00882
|
Giannos Stamoulis
|
Ignasi Sau, Giannos Stamoulis, and Dimitrios M. Thilikos
|
k-apices of minor-closed graph classes. I. Bounding the obstructions
|
48 pages and 12 figures. arXiv admin note: text overlap with
arXiv:2004.12692
| null | null | null |
math.CO cs.DM cs.DS
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Let $\mathcal{G}$ be a minor-closed graph class. We say that a graph $G$ is a
$k$-apex of $\mathcal{G}$ if $G$ contains a set $S$ of at most $k$ vertices
such that $G\setminus S$ belongs to $\mathcal{G}.$ We denote by $\mathcal{A}_k
(\mathcal{G})$ the set of all graphs that are $k$-apices of $\mathcal{G}.$ We
prove that every graph in the obstruction set of $\mathcal{A}_k (\mathcal{G}),$
i.e., the minor-minimal set of graphs not belonging to $\mathcal{A}_k
(\mathcal{G}),$ has size at most $2^{2^{2^{2^{\mathsf{poly}(k)}}}},$ where
$\mathsf{poly}$ is a polynomial function whose degree depends on the size of
the minor-obstructions of $\mathcal{G}.$ This bound drops to
$2^{2^{\mathsf{poly}(k)}}$ when $\mathcal{G}$ excludes some apex graph as a
minor.
|
[{'version': 'v1', 'created': 'Mon, 1 Mar 2021 10:07:46 GMT'}
{'version': 'v2', 'created': 'Thu, 28 Oct 2021 10:41:53 GMT'}
{'version': 'v3', 'created': 'Wed, 5 Oct 2022 14:34:09 GMT'}
{'version': 'v4', 'created': 'Thu, 16 Mar 2023 07:12:58 GMT'}]
|
2023-03-17
|
[array(['Sau', 'Ignasi', ''], dtype=object)
array(['Stamoulis', 'Giannos', ''], dtype=object)
array(['Thilikos', 'Dimitrios M.', ''], dtype=object)]
|
5,268 |
2110.05533
|
Christopher Manser
|
Christopher J. Manser, Erik Dennihy, Boris T. G\"ansicke, John H.
Debes, Nicola P. Gentile Fusillo, J.J. Hermes, Mark Hollands, Paula
Izquierdo, B.C. Kaiser, T.R. Marsh, Joshua S. Reding, Pablo Rodr\'iguez-Gil,
Dimitri Veras, David J. Wilson
|
Velocity-imaging the rapidly precessing planetary disc around the white
dwarf HE 1349-2305 using Doppler tomography
|
14 Pages, 10 Figures, accepted for publication in MNRAS
| null |
10.1093/mnras/stab2948
| null |
astro-ph.EP astro-ph.SR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The presence of planetary material in white dwarf atmospheres, thought to be
accreted from a dusty debris disc produced via the tidal disruption of a
planetesimal, is common. Approximately five per cent of these discs host a
co-orbital gaseous component detectable via emission from atomic transitions -
usually the 8600 Angstrom CaII triplet. These emission profiles can be highly
variable in both morphology and strength. Furthermore, the morphological
variations in a few systems have been shown to be periodic, likely produced by
an apsidally precessing asymmetric disc. Of the known gaseous debris discs,
that around HE1349-2305 has the most rapidly evolving emission line morphology,
and we present updated spectroscopy of the CaII triplet of this system. The
additional observations show that the emission line morphologies vary
periodically and consistently, and we constrain the period to two aliases of
459$\pm$3d and 502$\pm$3d. We produce images of the CaII triplet emission from
the disc in velocity space using Doppler tomography - only the second such
imaging of a white dwarf debris disc. We suggest that the asymmetric nature of
these velocity images is generated by gas moving on eccentric orbits with
radially-dependent excitation conditions via photo-ionisation from the white
dwarf. We also obtained short-cadence (~ 4 min) spectroscopy to search for
variability on the time-scale of the disc's orbital period (~ hours) due to the
presence of a planetesimal, and rule out variability at a level of ~ 1.4 per
cent.
|
[{'version': 'v1', 'created': 'Mon, 11 Oct 2021 18:17:40 GMT'}]
|
2021-10-20
|
[array(['Manser', 'Christopher J.', ''], dtype=object)
array(['Dennihy', 'Erik', ''], dtype=object)
array(['Gänsicke', 'Boris T.', ''], dtype=object)
array(['Debes', 'John H.', ''], dtype=object)
array(['Fusillo', 'Nicola P. Gentile', ''], dtype=object)
array(['Hermes', 'J. J.', ''], dtype=object)
array(['Hollands', 'Mark', ''], dtype=object)
array(['Izquierdo', 'Paula', ''], dtype=object)
array(['Kaiser', 'B. C.', ''], dtype=object)
array(['Marsh', 'T. R.', ''], dtype=object)
array(['Reding', 'Joshua S.', ''], dtype=object)
array(['Rodríguez-Gil', 'Pablo', ''], dtype=object)
array(['Veras', 'Dimitri', ''], dtype=object)
array(['Wilson', 'David J.', ''], dtype=object)]
|
5,269 |
2206.14429
|
Simon Krogmann
|
Nils Bertschinger, Martin Hoefer, Simon Krogmann, Pascal Lenzner,
Steffen Schuldenzucker, Lisa Wilhelmi
|
Equilibria and Convergence in Fire Sale Games
|
To appear at the 22nd International Conference on Autonomous Agents
and Multiagent Systems (AAMAS 2023), full version
| null | null | null |
cs.GT
|
http://creativecommons.org/licenses/by/4.0/
|
The complex interactions between algorithmic trading agents can have a severe
influence on the functioning of our economy, as witnessed by recent banking
crises and trading anomalies. A common phenomenon in these situations are fire
sales, a contagious process of asset sales that trigger further sales. We study
the existence and structure of equilibria in a game-theoretic model of fire
sales. We prove that for a wide parameter range (e.g., convex price impact
functions), equilibria exist and form a complete lattice. This is contrasted
with a non-existence result for concave price impact functions. Moreover, we
study the convergence of best-response dynamics towards equilibria when they
exist. In general, best-response dynamics may cycle. However, in many settings
they are guaranteed to converge to the socially optimal equilibrium when
starting from a natural initial state. Moreover, we discuss a simplified
variant of the dynamics that is less informationally demanding and converges to
the same equilibria. We compare the dynamics in terms of convergence speed.
|
[{'version': 'v1', 'created': 'Wed, 29 Jun 2022 07:02:32 GMT'}
{'version': 'v2', 'created': 'Thu, 30 Jun 2022 07:52:46 GMT'}
{'version': 'v3', 'created': 'Fri, 26 May 2023 12:54:43 GMT'}]
|
2023-05-29
|
[array(['Bertschinger', 'Nils', ''], dtype=object)
array(['Hoefer', 'Martin', ''], dtype=object)
array(['Krogmann', 'Simon', ''], dtype=object)
array(['Lenzner', 'Pascal', ''], dtype=object)
array(['Schuldenzucker', 'Steffen', ''], dtype=object)
array(['Wilhelmi', 'Lisa', ''], dtype=object)]
|
5,270 |
2108.02906
|
Zhuoyuan Song
|
Jonathan Wallen, Maddyson Jeske, Zhuoyuan Song
|
Co-design Optimization for Underwater Vehicle Docking Systems
|
7 pages, 6 figures
| null | null | null |
cs.RO
|
http://creativecommons.org/licenses/by/4.0/
|
The design of autonomous underwater vehicles (AUVs) and their docking
stations has been a popular research topic for several decades. Although many
AUV and dock designs have been proposed, materialized, and commercialized, most
of these existing designs prioritize the functionality of the AUV over the
dock, or vise versa; there has been limited formal research in analytical
optimization for AUV docking systems. In this paper, a multidisciplinary
optimization framework is presented with the aim to fill this theoretical gap.
We propose a co-design optimization method that optimizes multiple design
parameters governing the archetype of an AUV and its docking system. Capturing
the user design intents in the optimization process, the proposed method
produces a set of optimal design parameters that satisfies a set of predefined
bounds, constraints, and initial conditions. Three cases of design optimization
are reported for different design intents. Each optimal design found in the
three cases is compared to an existing system to show the validity of this
design optimization framework.
|
[{'version': 'v1', 'created': 'Fri, 6 Aug 2021 01:34:57 GMT'}]
|
2021-08-09
|
[array(['Wallen', 'Jonathan', ''], dtype=object)
array(['Jeske', 'Maddyson', ''], dtype=object)
array(['Song', 'Zhuoyuan', ''], dtype=object)]
|
5,271 |
1609.09554
|
Mathew Zuparic Dr
|
A.B. Holder, M.L. Zuparic and A.C. Kalloniatis
|
Gaussian noise and the two-network frustrated Kuramoto model
|
55 pages, 17 figures, accepted by Physica D
| null |
10.1016/j.physd.2016.09.009
| null |
nlin.AO math.DS
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We examine analytically and numerically a variant of the stochastic Kuramoto
model for phase oscillators coupled on a general network. Two populations of
phased oscillators are considered, labelled `Blue' and `Red', each with their
respective networks, internal and external couplings, natural frequencies, and
frustration parameters in the dynamical interactions of the phases. We
disentagle the different ways that additive Gaussian noise may influence the
dynamics by applying it separately on zero modes or normal modes corresponding
to a Laplacian decomposition for the sub-graphs for Blue and Red. Under the
linearisation ansatz that the oscillators of each respective network remain
relatively phase-sychronised centroids or clusters, we are able to obtain
simple closed-form expressions using the Fokker-Planck approach for the
dynamics of the average angle of the two centroids. In some cases, this leads
to subtle effects of metastability that we may analytically describe using the
theory of ratchet potentials. These considerations are extended to a regime
where one of the populations has fragmented in two. The analytic expressions we
derive largely predict the dynamics of the non-linear system seen in numerical
simulation. In particular, we find that noise acting on a more tightly coupled
population allows for improved synchronisation of the other population where
deterministically it is fragmented.
|
[{'version': 'v1', 'created': 'Fri, 30 Sep 2016 00:43:52 GMT'}]
|
2017-02-01
|
[array(['Holder', 'A. B.', ''], dtype=object)
array(['Zuparic', 'M. L.', ''], dtype=object)
array(['Kalloniatis', 'A. C.', ''], dtype=object)]
|
5,272 |
hep-ph/9905394
|
Annelies Oosterhof-Meij
|
Wolfram Kittel
|
Interconnection Effects and W+W- Decays (a critical (p)(re)view)
|
11 pages, Latex, 12 figures (gzipped), 1 style-file
| null | null |
HEN-420
|
hep-ph
| null |
Color reconnection and Bose-Einstein correlations not only can have an
influence on the measurement of the W-mass in the fully hadronic W+W- decay
channel at LEP2, but also can give essential information on the structure of
the QCD vacuum and the space-time development of a q_1\bar q_2 system. Recent
developments are critically analyzed, with particular emphasis on the models
used in this field. More sensitive variables are needed to distinguish between
color reconnection models, while more experimental knowledge has to be built
into the Bose-Einstein models and, above all, these two closely related
phenomena have to be treated in common. Both effects are determined by the
space-time overlap of the W+ and W- decay products. Vital experimental
information on the space-time development of the decay of the q_1\bar q_2
system is becoming available from the high-statistics data on hadronic Z decay
and models will have to be able to explain this evidence before being used to
predict interference effects in hadronic W+W- decay.
|
[{'version': 'v1', 'created': 'Wed, 19 May 1999 07:44:32 GMT'}
{'version': 'v2', 'created': 'Tue, 29 Jun 1999 08:29:50 GMT'}]
|
2007-05-23
|
[array(['Kittel', 'Wolfram', ''], dtype=object)]
|
5,273 |
1712.09506
|
Haridas Mundoor
|
Haridas Mundoor, Ghadah. H. Sheetah, Sungoh Park, Paul J. Ackerman,
Ivan I. Smalyukh and Jao van de Lagemaat
|
Tuning and Switching a Plasmonic Quantum Dot Sandwich in a Nematic Line
Defect
|
Supporting information at the end
| null | null | null |
cond-mat.mes-hall cond-mat.soft
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study the quantum-mechanical effects arising in a single semiconductor
core/shell quantum dot controllably sandwiched between two plasmonic nanorods.
Control over the position and the sandwich confinement structure is achieved by
the use of a linear-trap, liquid-crystal line defect and laser tweezers that
push the sandwich together. This arrangement allows for the study of exciton
plasmon interactions in a single structure, unaltered by ensemble effects or
the complexity of dielectric interfaces. We demonstrate the effect of plasmonic
confinement on the photon-antibunching behavior of the quantum dot and its
luminescence lifetime. The quantum dot behaves as a single emitter when
nanorods are far away from the quantum dot but shows possible multiexciton
emission and a significantly decreased lifetime when tightly confined in a
plasmonic sandwich. These findings demonstrate that liquid crystal defects,
combined with laser tweezers, enable a versatile platform to study plasmonic
coupling phenomena in a nanoscale laboratory, where all elements can be
arranged almost at will.
|
[{'version': 'v1', 'created': 'Wed, 27 Dec 2017 06:27:54 GMT'}]
|
2017-12-29
|
[array(['Mundoor', 'Haridas', ''], dtype=object)
array(['Sheetah', 'Ghadah. H.', ''], dtype=object)
array(['Park', 'Sungoh', ''], dtype=object)
array(['Ackerman', 'Paul J.', ''], dtype=object)
array(['Smalyukh', 'Ivan I.', ''], dtype=object)
array(['van de Lagemaat', 'Jao', ''], dtype=object)]
|
5,274 |
2111.01774
|
Matthieu Nadini
|
Matthieu Nadini, Alberto Bracci, Abeer ElBahrawy, Philip Gradwell,
Alexander Teytelboym, Andrea Baronchelli
|
Emergence and structure of decentralised trade networks around dark web
marketplaces
| null |
Scientific Reports volume 12 (2022)
|
10.1038/s41598-022-07492-x
|
5425
|
physics.soc-ph cs.CY
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Dark web marketplaces (DWMs) are online platforms that facilitate illicit
trade among millions of users generating billions of dollars in annual revenue.
Recently, two interview-based studies have suggested that DWMs may also promote
the emergence of direct user-to-user (U2U) trading relationships. Here, we
quantify the scale of, and thoroughly investigate, U2U trading around DWMs by
analysing 31 million Bitcoin transactions among users of 40 DWMs between June
2011 and Jan 2021. We find that half of the DWM users trade through U2U pairs
generating a total trading volume greater than DWMs themselves. We then show
that hundreds of thousands of DWM users form stable trading pairs that are
persistent over time. Users in stable pairs are typically the ones with the
largest trading volume on DWMs. Then, we show that new U2U pairs often form
while both users are active on the same DWM, suggesting the marketplace may
serve as a catalyst for new direct trading relationships. Finally, we reveal
that stable U2U pairs tend to survive DWM closures and that they were not
affected by COVID-19, indicating that their trading activity is resilient to
external shocks. Our work unveils sophisticated patterns of trade emerging in
the dark web and highlights the importance of investigating user behaviour
beyond the immediate buyer-seller network on a single marketplace.
|
[{'version': 'v1', 'created': 'Tue, 2 Nov 2021 17:51:53 GMT'}]
|
2022-04-05
|
[array(['Nadini', 'Matthieu', ''], dtype=object)
array(['Bracci', 'Alberto', ''], dtype=object)
array(['ElBahrawy', 'Abeer', ''], dtype=object)
array(['Gradwell', 'Philip', ''], dtype=object)
array(['Teytelboym', 'Alexander', ''], dtype=object)
array(['Baronchelli', 'Andrea', ''], dtype=object)]
|
5,275 |
2105.05114
|
Richard D. Ball
|
Richard D. Ball and Rosalyn L. Pearson
|
Correlation of Theoretical Uncertainties in PDF Fits and Theoretical
Uncertainties in Predictions
|
35 pages, 14 figures: final published version
| null |
10.1140/epjc/s10052-021-09602-x
|
Edinburgh 2019/17
|
hep-ph
|
http://creativecommons.org/licenses/by/4.0/
|
We show how to account for correlations between theoretical uncertainties
incorporated in parton distribution function (PDF) fits, and the theoretical
uncertainties in the predictions made using these PDFs. We demonstrate by
explicit calculations, both analytical and numerical, that these correlations
can lead to corrections to the central values of the predictions, and
reductions in both the PDF uncertainties and the theoretical uncertainties in
the prediction. We illustrate our results with predictions for top production
rapidity distributions and the Higgs total cross-section at the LHC, using the
NLO NNPDF3.1 PDF set which incorporates missing higher order uncertainties. We
conclude that the inclusion of correlations can increase both the accuracy and
precision of predictions involving PDFs, particularly for processes with data
already included in the PDF fit.
|
[{'version': 'v1', 'created': 'Tue, 11 May 2021 15:12:21 GMT'}
{'version': 'v2', 'created': 'Thu, 22 Jul 2021 13:08:03 GMT'}
{'version': 'v3', 'created': 'Sun, 8 Aug 2021 14:27:45 GMT'}]
|
2021-10-04
|
[array(['Ball', 'Richard D.', ''], dtype=object)
array(['Pearson', 'Rosalyn L.', ''], dtype=object)]
|
5,276 |
0802.3568
|
Anthony G A Brown
|
Anthony G.A. Brown (Leiden Observatory)
|
Getting ready for the micro-arcsecond era
|
To appear in proceedings of IAU Symposium 248: A Giant Step: from
Milli- to Micro-arcsecond Astrometry; 10 pages, 4 figures
| null | null | null |
astro-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
As the title of this symposium implies, one of the aims is to examine the
future of astrometry as we move from an era in which thanks to the Hipparcos
Catalogue everyone has become familiar with milliarcsecond astrometry to an era
in which microarcsecond astrometry will become the norm. I will take this look
into the future by first providing an overview of present astrometric
programmes and how they fit together and then I will attempt to identify the
most promising future directions. In addition I discuss the important
conditions for the maximization of the scientific return of future large and
highly accurate astrometric catalogues; catalogue access and analysis tools,
the availability of sufficient auxiliary data and theoretical knowledge, and
the education of the future generation of astrometrists.
|
[{'version': 'v1', 'created': 'Mon, 25 Feb 2008 08:36:25 GMT'}]
|
2008-02-26
|
[array(['Brown', 'Anthony G. A.', '', 'Leiden Observatory'], dtype=object)]
|
5,277 |
2009.06972
|
Marc Teng Yen Hon
|
Marc Hon, Earl P. Bellinger, Saskia Hekker, Dennis Stello, James S.
Kuszlewicz
|
Asteroseismic Inference of Subgiant Evolutionary Parameters with Deep
Learning
|
18 pages, 15 figures. Published in MNRAS. Updated citations and
amendments to Figure 2 reference in V2
| null |
10.1093/mnras/staa2853
| null |
astro-ph.SR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
With the observations of an unprecedented number of oscillating subgiant
stars expected from NASA's TESS mission, the asteroseismic characterization of
subgiant stars will be a vital task for stellar population studies and for
testing our theories of stellar evolution. To determine the fundamental
properties of a large sample of subgiant stars efficiently, we developed a deep
learning method that estimates distributions of fundamental parameters like age
and mass over a wide range of input physics by learning from a grid of stellar
models varied in eight physical parameters. We applied our method to four
Kepler subgiant stars and compare our results with previously determined
estimates. Our results show good agreement with previous estimates for three of
them (KIC 11026764, KIC 10920273, KIC 11395018). With the ability to explore a
vast range of stellar parameters, we determine that the remaining star, KIC
10005473, is likely to have an age 1 Gyr younger than its previously determined
estimate. Our method also estimates the efficiency of overshooting,
undershooting, and microscopic diffusion processes, from which we determined
that the parameters governing such processes are generally poorly-constrained
in subgiant models. We further demonstrate our method's utility for ensemble
asteroseismology by characterizing a sample of 30 Kepler subgiant stars, where
we find a majority of our age, mass, and radius estimates agree within
uncertainties from more computationally expensive grid-based modelling
techniques.
|
[{'version': 'v1', 'created': 'Tue, 15 Sep 2020 10:29:08 GMT'}
{'version': 'v2', 'created': 'Thu, 1 Oct 2020 10:30:41 GMT'}]
|
2020-10-02
|
[array(['Hon', 'Marc', ''], dtype=object)
array(['Bellinger', 'Earl P.', ''], dtype=object)
array(['Hekker', 'Saskia', ''], dtype=object)
array(['Stello', 'Dennis', ''], dtype=object)
array(['Kuszlewicz', 'James S.', ''], dtype=object)]
|
5,278 |
1805.06791
|
Daniele Morbidelli
|
Roberto Monti and Daniele Morbidelli
|
John and uniform domains in generalized Siegel boundaries
|
Minor corrections and updated references
| null |
10.1007/s11118-019-09792-w
| null |
math.MG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Given the pair of vector fields $X=\partial_x+|z|^{2m}y\partial_t$ and $
Y=\partial_y-|z|^{2m}x \partial_t,$ where $(x,y,t)=
(z,t)\in\mathbb{R}^3=\mathbb{C}\times\mathbb{R}$, we give a condition on a
bounded domain $\Omega\subset\mathbb{R}^3$ which ensures that $\Omega$ is an
$(\epsilon,\delta)$-domain for the Carnot-Carath\'eodory metric. We also
analyze the Ahlfors regularity of the natural surface measure induced at the
boundary by the vector fields.
|
[{'version': 'v1', 'created': 'Thu, 17 May 2018 14:16:17 GMT'}
{'version': 'v2', 'created': 'Fri, 2 Aug 2019 07:06:09 GMT'}]
|
2019-08-12
|
[array(['Monti', 'Roberto', ''], dtype=object)
array(['Morbidelli', 'Daniele', ''], dtype=object)]
|
5,279 |
cond-mat/0310233
|
Do-Hyun Kim
|
D.-H. Kim, G. J. Rodgers, B. Kahng, D. Kim
|
Self-organized Model for Modular Complex Networks : Division and
Independence
|
4 pages, 5 figures
| null | null | null |
cond-mat.stat-mech
| null |
We introduce a minimal network model which generates a modular structure in a
self-organized way. To this end, we modify the Barabasi-Albert model into the
one evolving under the principle of division and independence as well as growth
and preferential attachment (PA). A newly added vertex chooses one of the
modules composed of existing vertices, and attaches edges to vertices belonging
to that module following the PA rule. When the module size reaches a proper
size, the module is divided into two, and a new module is created. The karate
club network studied by Zachary is a prototypical example. We find that the
model can reproduce successfully the behavior of the hierarchical clustering
coefficient of a vertex with degree k, C(k), in good agreement with empirical
measurements of real world networks.
|
[{'version': 'v1', 'created': 'Fri, 10 Oct 2003 04:40:04 GMT'}]
|
2007-05-23
|
[array(['Kim', 'D. -H.', ''], dtype=object)
array(['Rodgers', 'G. J.', ''], dtype=object)
array(['Kahng', 'B.', ''], dtype=object)
array(['Kim', 'D.', ''], dtype=object)]
|
5,280 |
2304.13780
|
Guo Chen
|
Guo P. Chen and Gustavo E. Scuseria
|
Robust formulation of Wick's theorem for computing matrix elements
between Hartree-Fock-Bogoliubov wavefunctions
| null | null |
10.1063/5.0156124
| null |
physics.chem-ph cond-mat.str-el nucl-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Numerical difficulties associated with computing matrix elements of operators
between Hartree-Fock-Bogoliubov (HFB) wavefunctions have plagued the
development of HFB-based many-body theories for decades. The problem arises
from divisions by zero in the standard formulation of the nonorthogonal Wick's
theorem in the limit of vanishing HFB overlap. In this paper, we present a
robust formulation of Wick's theorem that stays well-behaved regardless of
whether the HFB states are orthogonal or not. This new formulation ensures
cancellation between the zeros of the overlap and the poles of the Pfaffian,
which appears naturally in fermionic systems. Our formula explicitly eliminates
self-interaction, which otherwise causes additional numerical challenges. A
computationally efficient version of our formalism enables robust
symmetry-projected HFB calculations with the same computational cost as
mean-field theories. Moreover, we avoid potentially diverging normalization
factors by introducing a robust normalization procedure. The resulting
formalism treats even and odd number of particles on equal footing and reduces
to Hartree-Fock as a natural limit. As proof of concept, we present a
numerically stable and accurate solution to a Jordan-Wigner-transformed
Hamiltonian, whose singularities motivated the present work. Our robust
formulation of Wick's theorem is a most promising development for methods using
quasiparticle vacuum states.
|
[{'version': 'v1', 'created': 'Wed, 26 Apr 2023 18:57:49 GMT'}
{'version': 'v2', 'created': 'Fri, 12 May 2023 15:51:56 GMT'}
{'version': 'v3', 'created': 'Fri, 26 May 2023 15:31:46 GMT'}
{'version': 'v4', 'created': 'Thu, 8 Jun 2023 17:03:27 GMT'}]
|
2023-06-09
|
[array(['Chen', 'Guo P.', ''], dtype=object)
array(['Scuseria', 'Gustavo E.', ''], dtype=object)]
|
5,281 |
2003.05924
|
Guillaume St-Onge
|
Guillaume St-Onge, Vincent Thibeault, Antoine Allard, Louis J. Dub\'e
and Laurent H\'ebert-Dufresne
|
Social confinement and mesoscopic localization of epidemics on networks
|
5 pages, 4 figures
|
Phys. Rev. Lett. 126, 098301 (2021)
|
10.1103/PhysRevLett.126.098301
| null |
physics.soc-ph nlin.AO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Recommendations around epidemics tend to focus on individual behaviors, with
much less efforts attempting to guide event cancellations and other collective
behaviors since most models lack the higher-order structure necessary to
describe large gatherings. Through a higher-order description of contagions on
networks, we model the impact of a blanket cancellation of events larger than a
critical size and find that epidemics can suddenly collapse when interventions
operate over groups of individuals rather than at the level of individuals. We
relate this phenomenon to the onset of mesoscopic localization, where
contagions concentrate around dominant groups.
|
[{'version': 'v1', 'created': 'Thu, 12 Mar 2020 17:43:38 GMT'}
{'version': 'v2', 'created': 'Thu, 23 Apr 2020 12:18:53 GMT'}
{'version': 'v3', 'created': 'Thu, 5 Nov 2020 20:52:19 GMT'}
{'version': 'v4', 'created': 'Fri, 29 Jan 2021 17:06:11 GMT'}]
|
2021-03-10
|
[array(['St-Onge', 'Guillaume', ''], dtype=object)
array(['Thibeault', 'Vincent', ''], dtype=object)
array(['Allard', 'Antoine', ''], dtype=object)
array(['Dubé', 'Louis J.', ''], dtype=object)
array(['Hébert-Dufresne', 'Laurent', ''], dtype=object)]
|
5,282 |
0802.2761
|
Jian-Sheng Wang
|
Jian-Sheng Wang, Jian Wang, and J. T. Lu
|
Quantum thermal transport in nanostructures
|
24 pages, 10 figures, over 200 references
|
Eur. Phys. J. B 62, 381-404 (2008)
|
10.1140/epjb/e2008-00195-8
| null |
cond-mat.mes-hall
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this colloquia review we discuss methods for thermal transport
calculations for nanojunctions connected to two semi-infinite leads served as
heat-baths. Our emphases are on fundamental quantum theory and atomistic
models. We begin with an introduction of the Landauer formula for ballistic
thermal transport and give its derivation from scattering wave point of view.
Several methods (scattering boundary condition, mode-matching, Piccard and
Caroli formulas) of calculating the phonon transmission coefficients are given.
The nonequilibrium Green's function (NEGF) method is reviewed and the Caroli
formula is derived. We also give iterative methods and an algorithm based on a
generalized eigenvalue problem for the calculation of surface Green's
functions, which are starting point for an NEGF calculation. A systematic
exposition for the NEGF method is presented, starting with the fundamental
definitions of the Green's functions, and ending with equations of motion for
the contour ordered Green's functions and Feynman diagrammatic expansion. In
the later part, we discuss the treatments of nonlinear effects in heat
conduction, including a phenomenological expression for the transmission, NEGF
for phonon-phonon interactions, molecular dynamics (generalized Langevin) with
quantum heat-baths, and electron-phonon interactions. Some new results are also
shown. We also briefly review the experimental status of the thermal transport
measurements in nanostructures.
|
[{'version': 'v1', 'created': 'Wed, 20 Feb 2008 06:42:34 GMT'}]
|
2008-05-23
|
[array(['Wang', 'Jian-Sheng', ''], dtype=object)
array(['Wang', 'Jian', ''], dtype=object)
array(['Lu', 'J. T.', ''], dtype=object)]
|
5,283 |
2208.12710
|
Wayne Oldford
|
Pavel Shuldiner and R. Wayne Oldford
|
The Clique Structure of Johnson Graphs
|
14 pages, 2 figures (3 png files)
| null | null | null |
math.CO
|
http://creativecommons.org/licenses/by-sa/4.0/
|
Motivated by an approach to visualization of high dimensional statistical
data given in Hurley and Oldford (2011), this work examines the clique
structure of $J_n(m, m-1)$ Johnson graphs. Cliques and maximal cliques are
characterized and proved to be of one of only two types. These types are
characterized by features of the intersection and of the union of the subsets
of [n] = {1, 2, ..., n} which define the vertices of the graph. Clique numbers
and clique partition numbers follow. The results on Johnson graphs are
connected to results on intersecting families of sets related to extremal set
theory.
|
[{'version': 'v1', 'created': 'Fri, 26 Aug 2022 15:10:53 GMT'}]
|
2022-08-29
|
[array(['Shuldiner', 'Pavel', ''], dtype=object)
array(['Oldford', 'R. Wayne', ''], dtype=object)]
|
5,284 |
0904.2830
|
Feng Pan
|
Feng Pan, Ming-Xia Xie, Xin Guan, Lian-Rong Dai, and J. P. Draayer
|
New exact solutions of the standard pairing model for well-deformed
nuclei
|
10 pages, Revtex4
|
Phys.Rev.C80:044306,2009
|
10.1103/PhysRevC.80.044306
| null |
nucl-th cond-mat.str-el quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A new step-by-step diagonalization procedure for evaluating exact solutions
of the nuclear deformed mean-field plus pairing interaction model is proposed
via a simple Bethe ansatz in each step from which the eigenvalues and
corresponding eigenstates can be obtained progressively. This new approach
draws upon an observation that the original one- plus two-body problem in a
$k$-particle Hilbert subspace can be mapped unto a one-body grand hard-core
boson picture that can be solved step by step with a simple Bethe ansatz known
from earlier work. Based on this new procedure, it is further shown that the
extended pairing model for deformed nuclei [Phys. Rev. Lett. 92, 112503 (2004)
] is similar to the standard pairing model with the first step approximation,
in which only the lowest energy eigenstate of the standard pure pairing
interaction part is taken into consideration. Our analysis show that the
standard pairing model with the first step approximation displays similar pair
structures of first few exact low-lying states of the model, which, therefore,
provides a link between the two models.
|
[{'version': 'v1', 'created': 'Sat, 18 Apr 2009 08:08:48 GMT'}
{'version': 'v2', 'created': 'Wed, 5 Aug 2009 22:12:12 GMT'}]
|
2009-11-06
|
[array(['Pan', 'Feng', ''], dtype=object)
array(['Xie', 'Ming-Xia', ''], dtype=object)
array(['Guan', 'Xin', ''], dtype=object)
array(['Dai', 'Lian-Rong', ''], dtype=object)
array(['Draayer', 'J. P.', ''], dtype=object)]
|
5,285 |
gr-qc/0008006
|
Yutaka Hosotani
|
R. G. Daghigh, J. I. Kapusta, Y. Hosotani
|
False Vacuum Black Holes and Universes
|
4 pages with 2 figures. revtex
| null | null |
NUC-MINN-00/12-T, OU-HET 354, UMN-TH-1916/00
|
gr-qc hep-ph hep-th
| null |
We construct a black hole whose interior is the false vacuum and whose
exterior is the true vacuum of a classical field theory. From the outside the
metric is the usual Schwarzschild one, but from the inside the space is de
Sitter with a cosmological constant determined by the energy of the false
vacuum. The parameters of the field potential may allow for the false vacuum to
exist for more than the present age of the universe. A potentially relevant
effective field theory within the context of QCD results in a Schwarzschild
radius of about 200 km.
|
[{'version': 'v1', 'created': 'Tue, 1 Aug 2000 18:50:44 GMT'}]
|
2007-05-23
|
[array(['Daghigh', 'R. G.', ''], dtype=object)
array(['Kapusta', 'J. I.', ''], dtype=object)
array(['Hosotani', 'Y.', ''], dtype=object)]
|
5,286 |
0709.1660
|
Victor Blanco
|
Victor Blanco and Justo Puerto
|
Partial Gr\"obner bases for multiobjective integer linear optimization
|
24 pages
| null | null | null |
math.OC math.AG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper we present a new methodology for solving multiobjective integer
linear programs using tools from algebraic geometry. We introduce the concept
of partial Gr\"obner basis for a family of multiobjective programs where the
right-hand side varies. This new structure extends the notion of Gr\"obner
basis for the single objective case, to the case of multiple objectives, i.e.,
a partial ordering instead of a total ordering over the feasible vectors. The
main property of these bases is that the partial reduction of the integer
elements in the kernel of the constraint matrix by the different blocks of the
basis is zero. It allows us to prove that this new construction is a test
family for a family of multiobjective programs. An algorithm '\`a la
Buchberger' is developed to compute partial Gr\"obner bases and two different
approaches are derived, using this methodology, for computing the entire set of
efficient solutions of any multiobjective integer linear problem (MOILP). Some
examples illustrate the application of the algorithms and computational
experiments are reported on several families of problems.
|
[{'version': 'v1', 'created': 'Tue, 11 Sep 2007 15:33:16 GMT'}
{'version': 'v2', 'created': 'Thu, 19 Jun 2008 18:57:28 GMT'}]
|
2008-06-19
|
[array(['Blanco', 'Victor', ''], dtype=object)
array(['Puerto', 'Justo', ''], dtype=object)]
|
5,287 |
2107.12999
|
Joan Pau Sanchez
|
Joan Pau S\'anchez, David Morante, Pablo Hermosin, Daniel Ranuschio,
Alvaro Estalella, Dayana Viera, Simone Centuori, Geraint Jones, Colin
Snodgrass, Anny Chantal Levasseur-Regourd, Cecilia Tubiana
|
ESA F-Class Comet Interceptor: Trajectory Design to Intercept a
Yet-to-be-discovered Comet
|
Preprint version of paper accepted for Acta Astronautica
| null |
10.1016/j.actaastro.2021.07.014
| null |
astro-ph.EP astro-ph.IM physics.space-ph
|
http://creativecommons.org/licenses/by-nc-nd/4.0/
|
Comet Interceptor (Comet-I) was selected in June 2019 as the first ESA
F-Class mission. In 2029+, Comet-I will hitch a ride to a Sun-Earth L2
quasi-halo orbit, as a co-passenger of ESA's M4 ARIEL mission. It will then
remain idle at the L2 point until the right departure conditions are met to
intercept a yet-to-be-discovered long period comet (or interstellar body). The
fact that Comet-I target is thus unidentified becomes a key aspect of the
trajectory and mission design. The paper first analyses the long period comet
population and concludes that 2 to 3 feasible targets a year should be
expected. Yet, Comet-I will only be able to access some of these, depending
mostly on the angular distance between the Earth and the closest nodal point to
the Earth's orbit radius. A preliminary analysis of the transfer trajectories
has been performed to assess the trade-off between the accessible region and
the transfer time for a given spacecraft design, including a fully chemical, a
fully electric and a hybrid propulsion system. The different Earth escape
options also play a paramount role to enhance Comet-I capability to reach
possible long period comet targets. Particularly, Earth-leading intercept
configurations have the potential to benefit the most from lunar swing-by
departures. Finally, a preliminary Monte Carlo analysis shows that Comet-I has
a 95 to 99% likelihood of successfully visit a pristine newly-discovered long
period comet in less than 6 years of mission timespan.
|
[{'version': 'v1', 'created': 'Tue, 27 Jul 2021 16:01:51 GMT'}]
|
2021-07-29
|
[array(['Sánchez', 'Joan Pau', ''], dtype=object)
array(['Morante', 'David', ''], dtype=object)
array(['Hermosin', 'Pablo', ''], dtype=object)
array(['Ranuschio', 'Daniel', ''], dtype=object)
array(['Estalella', 'Alvaro', ''], dtype=object)
array(['Viera', 'Dayana', ''], dtype=object)
array(['Centuori', 'Simone', ''], dtype=object)
array(['Jones', 'Geraint', ''], dtype=object)
array(['Snodgrass', 'Colin', ''], dtype=object)
array(['Levasseur-Regourd', 'Anny Chantal', ''], dtype=object)
array(['Tubiana', 'Cecilia', ''], dtype=object)]
|
5,288 |
cond-mat/9210016
| null |
M. Fabrizio and A. Parola
|
Spin-Charge separation in a model of two coupled chains
|
12 pages, LATEX(REVTEX), SISSA 150/92/CM/MB
| null |
10.1103/PhysRevLett.70.226
| null |
cond-mat
| null |
A model of interacting electrons living on two chains coupled by a transverse
hopping $t_\perp$, is solved exactly by bosonization technique. It is shown
that $t_\perp$ does modify the shape of the Fermi surface also in presence of
interaction, although charge and spin excitations keep different velocities
$u_\rho$, $u_\sigma$. Two different regimes occur: at short distances, $x\ll
\xi = (u_\rho - u_\sigma)/4t_\perp$, the two chain model is not sensitive to
$t_\perp$, while for larger separation $x\gg \xi$ inter--chain hopping is
relevant and generates further singularities in the electron Green function
besides those due to spin-charge decoupling. (2 figures not included. Figure
requests: FABRIZIO@ITSSISSA)
|
[{'version': 'v1', 'created': 'Mon, 19 Oct 1992 10:55:39 GMT'}]
|
2009-10-22
|
[array(['Fabrizio', 'M.', ''], dtype=object)
array(['Parola', 'A.', ''], dtype=object)]
|
5,289 |
1801.01270
|
Mehdi Bennis
|
Mehdi Bennis, M\'erouane Debbah, and H. Vincent Poor
|
Ultra-Reliable and Low-Latency Wireless Communication: Tail, Risk and
Scale
|
27 pages, Proceedings of the IEEE (in press), October 2018
| null | null | null |
cs.IT eess.SP math.IT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Ensuring ultra-reliable and low-latency communication (URLLC) for 5G wireless
networks and beyond is of capital importance and is currently receiving
tremendous attention in academia and industry. At its core, URLLC mandates a
departure from expected utility-based network design approaches, in which
relying on average quantities (e.g., average throughput, average delay and
average response time) is no longer an option but a necessity. Instead, a
principled and scalable framework which takes into account delay, reliability,
packet size, network architecture, and topology (across access, edge, and core)
and decision-making under uncertainty is sorely lacking. The overarching goal
of this article is a first step to fill this void. Towards this vision, after
providing definitions of latency and reliability, we closely examine various
enablers of URLLC and their inherent tradeoffs. Subsequently, we focus our
attention on a plethora of techniques and methodologies pertaining to the
requirements of ultra-reliable and low-latency communication, as well as their
applications through selected use cases. These results provide crisp insights
for the design of low-latency and high-reliable wireless networks.
|
[{'version': 'v1', 'created': 'Thu, 4 Jan 2018 08:17:02 GMT'}
{'version': 'v2', 'created': 'Thu, 23 Aug 2018 08:02:41 GMT'}]
|
2018-08-24
|
[array(['Bennis', 'Mehdi', ''], dtype=object)
array(['Debbah', 'Mérouane', ''], dtype=object)
array(['Poor', 'H. Vincent', ''], dtype=object)]
|
5,290 |
1709.00178
|
Jonathan Detchart
|
Jonathan Detchart, J\'er\^ome Lacan
|
Improving the coding speed of erasure codes with polynomial ring
transforms
| null | null | null | null |
cs.IT math.IT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Erasure codes are widely used in today's storage systems to cope with
failures. Most of them use the finite field arithmetic. In this paper, we
propose an implementation and a coding speed evaluation of an original method
called PYRIT (PolYnomial RIng Transform) to perform operations between elements
of a finite field into a bigger ring by using fast transforms between these two
structures. Working in such a ring is much easier than working in a finite
field. Firstly, it reduces the coding complexity by design. Secondly, it allows
simple but efficient \texttt{xor}-based implementations by unrolling the
operations thanks to the properties of the ring structure. We evaluate this
proposition for Maximum Distance Separable erasure codes and we show that our
method has better performances than common codes. Compared to the best known
implementations, the coding speeds are increased by a factor varying from $1.5$
to $2$.
|
[{'version': 'v1', 'created': 'Fri, 1 Sep 2017 07:11:58 GMT'}]
|
2017-09-04
|
[array(['Detchart', 'Jonathan', ''], dtype=object)
array(['Lacan', 'Jérôme', ''], dtype=object)]
|
5,291 |
1401.7248
|
Mark Kambites
|
Mark Kambites
|
A large class of sofic monoids
| null | null | null | null |
math.GR math.DS
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We prove that a monoid is sofic, in the sense recently introduced by
Ceccherini-Silberstein and Coornaert, whenever the J-class of the identity is a
sofic group, and the quotients of this group by orbit stabilisers in the rest
of the monoid are amenable. In particular, this shows that the following are
all sofic: cancellative monoids with amenable group of units; monoids with
sofic group of units and finitely many non-units; and monoids with amenable
Schutzenberger groups and finitely many L-classes in each D-class. This
provides a very wide range of sofic monoids, subsuming most known examples
(with the notable exception of locally residually finite monoids). We conclude
by discussing some aspects of the definition, and posing some questions for
future research.
|
[{'version': 'v1', 'created': 'Tue, 28 Jan 2014 16:35:12 GMT'}]
|
2014-01-29
|
[array(['Kambites', 'Mark', ''], dtype=object)]
|
5,292 |
1803.10105
|
Colin Benjamin
|
Subhajit Pal, Colin Benjamin
|
Spin flip scattering engendered quantum spin torque in a Josephson
junction
|
16 pages, 7 figures, accepted for publication in Proceedings of the
Royal Society A (2019)
|
Proc. R. Soc. A 475: 20180775 (2019)
|
10.1098/rspa.2018.0775
| null |
cond-mat.supr-con cond-mat.mes-hall quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We examine a Josephson junction with two Ferromagnets and a spin flipper
sandwiched between two superconductors. In such Ferromagnetic Josephson
junctions, equilibrium spin torque exists only when Ferromagnets are
misaligned. This is explained via the "conventional" mechanism of spin transfer
torque, which owes its origin to the misalignment of two Ferromagnets. However,
we see surprisingly when the magnetic moments of the Ferromagnets are aligned
parallel or antiparallel, there is a finite equilibrium spin torque due to the
quantum mechanism of spin-flip scattering. We explore the properties of this
unique spin-flip scattering induced equilibrium quantum spin torque, especially
its tunability via exchange coupling and phase difference across the
superconductors.
|
[{'version': 'v1', 'created': 'Tue, 27 Mar 2018 14:27:16 GMT'}
{'version': 'v2', 'created': 'Mon, 4 Mar 2019 15:37:15 GMT'}]
|
2019-04-09
|
[array(['Pal', 'Subhajit', ''], dtype=object)
array(['Benjamin', 'Colin', ''], dtype=object)]
|
5,293 |
cond-mat/9701147
|
T. Kato
|
Takeo Kato and Masatoshi Imada (ISSP, Univ. of Tokyo)
|
Vortices and Quantum tunneling in Current-Biased 0-\pi-0 Josephson
Junctions of d-wave Superconductors
|
12 pages, LaTeX with 5 PS figures, using jpsj.sty
| null |
10.1143/JPSJ.66.1445
| null |
cond-mat.supr-con
| null |
We study a current-biased 0-\pi-0 Josephson junction made by high-T_c
superconductors, theoretically. When a length of the \pi junction is large
enough, this junction contains a vortex-antivortex pair at both ends of the \pi
junction. Magnetic flux carried by the vortices is calculated using the
sine-Gordon equation. The result shows that the magnetic flux of the vortices
is suppressed to zero as the distance between the vortices is reduced. By
applying an external current, the orientation of the vortices is reversed, and
a voltage pulse is generated. The current needed for this transition and
generated pulse energy are calculated. Macroscopic quantum tunneling (MQT) in
this transition is also studied. The tunneling rate has been evaluated by an
effective Hamiltonian with one degree of freedom.
|
[{'version': 'v1', 'created': 'Tue, 21 Jan 1997 11:24:47 GMT'}]
|
2009-10-30
|
[array(['Kato', 'Takeo', '', 'ISSP, Univ. of Tokyo'], dtype=object)
array(['Imada', 'Masatoshi', '', 'ISSP, Univ. of Tokyo'], dtype=object)]
|
5,294 |
1610.05079
|
Patrik Schmuki
|
Marco Altomare, Ole Pfoch, Alexei Tighineanu, Robin Kirchgeorg,
Kiyoung Lee, Elena Selli, and Patrik Schmuki
|
Molten o-H3PO4 - A New Electrolyte for the Anodic Synthesis of
Self-Organized Oxide Structures: WO3 Nanochannel Layers and Others
| null |
J. Am. Chem. Soc., 2015, 137 (17), pp 5646-5649
|
10.1021/jacs.5b02104
| null |
cond-mat.mtrl-sci
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We introduce the use of pure molten ortho-phosphoric acid (o-H3PO4) as an
electrolyte for selforganizing electrochemistry. This electrolyte allows for
the formation of self-organized oxide architectures (one-dimensional nanotubes,
nanochannels, nanopores) on metals such as tungsten that up to now were
regarded as very difficult to grow self-ordered anodic oxide structures. In
this work, we show particularly the fabrication of thick, vertically aligned
tungsten oxide nanochannel layers, with pore diameter of ca. 10 nm, and
illustrate their potential use in some typical applications.
|
[{'version': 'v1', 'created': 'Mon, 17 Oct 2016 12:38:13 GMT'}]
|
2016-10-18
|
[array(['Altomare', 'Marco', ''], dtype=object)
array(['Pfoch', 'Ole', ''], dtype=object)
array(['Tighineanu', 'Alexei', ''], dtype=object)
array(['Kirchgeorg', 'Robin', ''], dtype=object)
array(['Lee', 'Kiyoung', ''], dtype=object)
array(['Selli', 'Elena', ''], dtype=object)
array(['Schmuki', 'Patrik', ''], dtype=object)]
|
5,295 |
2208.11542
|
Jack Noonan
|
Jack Noonan and Anatoly Zhigljavsky
|
Improving exploration strategies in large dimensions and rate of
convergence of global random search algorithms
| null | null | null | null |
math.OC
|
http://creativecommons.org/licenses/by/4.0/
|
We consider global optimization problems, where the feasible region $\X$ is a
compact subset of $\mathbb{R}^d$ with $d \geq 10$. For these problems, we
demonstrate the following. First: the actual convergence of global random
search algorithms is much slower than that given by the classical estimates,
based on the asymptotic properties of random points. Second: the usually
recommended space exploration schemes are inefficient in the non-asymptotic
regime. Specifically, (a) uniform sampling on entire~$\X$ is much less
efficient than uniform sampling on a suitable subset of $\X$, and (b) the
effect of replacement of random points by low-discrepancy sequences is
negligible.
|
[{'version': 'v1', 'created': 'Wed, 24 Aug 2022 13:40:10 GMT'}
{'version': 'v2', 'created': 'Fri, 24 Feb 2023 09:58:33 GMT'}]
|
2023-02-27
|
[array(['Noonan', 'Jack', ''], dtype=object)
array(['Zhigljavsky', 'Anatoly', ''], dtype=object)]
|
5,296 |
2106.15958
|
Utkir A. Rozikov
|
U.A. Rozikov, S.S. Xudayarov
|
Quadratic non-stochastic operators: Examples of splitted chaos
|
12 pages, 1 figure
| null | null | null |
math.DS
|
http://creativecommons.org/licenses/by/4.0/
|
There is one-to-one correspondence between quadratic operators (mapping
$\mathbb R^m$ to itself) and cubic matrices. It is known that any quadratic
operator corresponding to a stochastic (in a fixed sense) cubic matrix
preserves the standard simplex. In this paper we find conditions on the
(non-stochastic) cubic matrix ensuring that corresponding quadratic operator
preserves simplex. Moreover, we construct several quadratic non-stochastic
operators which generate chaotic dynamical systems on the simplex. These
chaotic behaviors are \emph{splitted} meaning that the simplex is partitioned
into uncountably many invariant (with respect to quadratic operator) subsets
and the restriction of the dynamical system on each invariant set is chaos in
the sense of Devaney.
|
[{'version': 'v1', 'created': 'Wed, 30 Jun 2021 10:11:05 GMT'}]
|
2021-07-01
|
[array(['Rozikov', 'U. A.', ''], dtype=object)
array(['Xudayarov', 'S. S.', ''], dtype=object)]
|
5,297 |
1412.7877
|
S. Hamed Shams Mousavi
|
S. Hamed Shams Mousavi, Ali A. Eftekhar, Amir H. Atabaki, Ali Adibi
|
Band-edge Bilayer Plasmonic Nanostructure for Surface Enhanced Raman
Spectroscopy
| null | null |
10.1021/ph500487g
| null |
physics.optics cond-mat.mtrl-sci
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Spectroscopic analysis of large biomolecules is critical in a number of
applications, including medical diagnostics and label-free biosensing.
Recently, it has been shown that Raman spectroscopy of proteins can be used to
diagnose some diseases, including a few types of cancer. These experiments have
however been performed using traditional Raman spectroscopy and the development
of the Surface enhanced Raman spectroscopy (SERS) assays suitable for large
biomolecules could lead to a substantial decrease in the amount of specimen
necessary for these experiments. We present a new method to achieve high local
field enhancement in surface enhanced Raman spectroscopy through the
simultaneous adjustment of the lattice plasmons and localized surface plasmon
polaritons, in a periodic bilayer nanoantenna array resulting in a high
enhancement factor over the sensing area, with relatively high uniformity. The
proposed plasmonic nanostructure is comprised of two interacting nanoantenna
layers, providing a sharp band-edge lattice plasmon mode and a wide-band
localized surface plasmon for the separate enhancement of the pump and emitted
Raman signals. We demonstrate the application of the proposed nanostructure for
the spectral analysis of large biomolecules by binding a protein (streptavidin)
selectively on the hot-spots between the two stacked layers, using a low
concentration solution (100 nM) and we successfully acquire its SERS spectrum.
|
[{'version': 'v1', 'created': 'Fri, 26 Dec 2014 01:29:23 GMT'}
{'version': 'v2', 'created': 'Mon, 5 Jan 2015 14:49:35 GMT'}]
|
2017-11-28
|
[array(['Mousavi', 'S. Hamed Shams', ''], dtype=object)
array(['Eftekhar', 'Ali A.', ''], dtype=object)
array(['Atabaki', 'Amir H.', ''], dtype=object)
array(['Adibi', 'Ali', ''], dtype=object)]
|
5,298 |
1112.5704
|
Tetsuhiro Hatakeyama
|
Tetsuhiro S. Hatakeyama, Kunihiko Kaneko
|
Generic temperature compensation of biological clocks by autonomous
regulation of catalyst concentration
|
21 pages, 12 figures
| null |
10.1073/pnas.1120711109
| null |
q-bio.MN physics.bio-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Circadian clocks ubiquitous in life forms ranging bacteria to multi-cellular
organisms, often exhibit intrinsic temperature compensation; the period of
circadian oscillators is maintained constant over a range of physiological
temperatures, despite the expected Arrhenius form for the reaction coefficient.
Observations have shown that the amplitude of the oscillation depends on the
temperature but the period does not---this suggests that although not every
reaction step is temperature independent, the total system comprising several
reactions still exhibits compensation. We present a general mechanism for such
temperature compensation. Consider a system with multiple activation energy
barriers for reactions, with a common enzyme shared across several reaction
steps with a higher activation energy. These reaction steps rate-limit the
cycle if the temperature is not high. If the total abundance of the enzyme is
limited, the amount of free enzyme available to catalyze a specific reaction
decreases as more substrates bind to common enzyme. We show that this change in
free enzyme abundance compensate for the Arrhenius-type temperature dependence
of the reaction coefficient. Taking the example of circadian clocks with
cyanobacterial proteins KaiABC consisting of several phosphorylation sites, we
show that this temperature compensation mechanisms is indeed valid.
Specifically, if the activation energy for phosphorylation is larger than that
for dephosphorylation, competition for KaiA shared among the phosphorylation
reactions leads to temperature compensation. Moreover, taking a simpler model,
we demonstrate the generality of the proposed compensation mechanism,
suggesting relevance not only to circadian clocks but to other (bio)chemical
oscillators as well.
|
[{'version': 'v1', 'created': 'Sat, 24 Dec 2011 07:33:50 GMT'}]
|
2014-07-21
|
[array(['Hatakeyama', 'Tetsuhiro S.', ''], dtype=object)
array(['Kaneko', 'Kunihiko', ''], dtype=object)]
|
5,299 |
1304.6293
|
Thomas J. Haines
|
Thomas J. Haines
|
The stable Bernstein center and test functions for Shimura varieties
|
51 pages. To appear in the proceedings for the London Mathematical
Society - EPSRC Durham Symposium on Automorphic Forms and Galois
Representations, Durham, July 18-28, 2011. Typos corrected. Minor changes
made in proofs
| null | null | null |
math.AG math.NT math.RT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
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We elaborate the theory of the stable Bernstein center of a $p$-adic group
$G$, and apply it to state a general conjecture on test functions for Shimura
varieties due to the author and R. Kottwitz. This conjecture provides a
framework by which one might pursue the Langlands-Kottwitz method in a very
general situation: not necessarily PEL Shimura varieties with arbitrary level
structure at $p$. We give a concrete reinterpretation of the test function
conjecture in the context of parahoric level structure. We also use the stable
Bernstein center to formulate some of the transfer conjectures (the
"fundamental lemmas") that would be needed if one attempts to use the test
function conjecture to express the local Hasse-Weil zeta function of a Shimura
variety in terms of automorphic $L$-functions.
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[{'version': 'v1', 'created': 'Tue, 23 Apr 2013 14:08:06 GMT'}
{'version': 'v2', 'created': 'Sun, 19 May 2013 02:09:35 GMT'}
{'version': 'v3', 'created': 'Sun, 16 Feb 2014 16:01:03 GMT'}]
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2014-02-18
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[array(['Haines', 'Thomas J.', ''], dtype=object)]
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