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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1,400 |
2003.13634
|
Thorsten Pr\"ustel
|
Thorsten Pr\"ustel and Martin Meier-Schellersheim
|
Stochastic single-particle based simulations of cellular signaling
embedded into computational models of cellular morphology
|
26 pages, 7 figures
| null | null | null |
q-bio.QM
|
http://creativecommons.org/publicdomain/zero/1.0/
|
Cells exhibit a wide variety of different shapes. This diversity poses a
challenge for computational approaches that attempt to shed light on the role
cell geometry plays in regulating cell physiology and behavior. The simulation
platform Simmune is capable of embedding the computational representation of
signaling pathways into realistic models of cellular morphology. However,
Simmune's current approach to account for the cell geometry is limited to
deterministic models of reaction-diffusion processes, thus providing a
coarse-grained description that ignores stochastic local fluctuations. Here we
present an extension of Simmune that removes these limitations by employing an
alternative computational representation of cellular geometry that is smooth
and grid-free. These features make it possible to incorporate a fully
stochastic, spatially resolved description of the cellular biochemistry. The
alternative computational representation is compatible with Simmune's current
approach for specifying molecular interactions. This means that a modeler using
the approach needs to create a model of cellular biochemistry and morphology
only once to be able to use it for both, deterministic and stochastic
simulations.
|
[{'version': 'v1', 'created': 'Mon, 30 Mar 2020 17:10:04 GMT'}]
|
2020-03-31
|
[array(['Prüstel', 'Thorsten', ''], dtype=object)
array(['Meier-Schellersheim', 'Martin', ''], dtype=object)]
|
1,401 |
2208.07501
|
Ot\'avio Cury
|
Ot\'avio Cury, Guilherme Avelino, Pedro Santos Neto, Ricardo Britto,
Marco T\'ulio Valente
|
Identifying Source Code File Experts
|
Accepted at 16th International Symposium on Empirical Software
Engineering and Measurement (ESEM), 12 pages, 2022
| null | null | null |
cs.SE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In software development, the identification of source code file experts is an
important task. Identifying these experts helps to improve software maintenance
and evolution activities, such as developing new features, code reviews, and
bug fixes. Although some studies have proposed repository mining techniques to
automatically identify source code experts, there are still gaps in this area
that can be explored. For example, investigating new variables related to
source code knowledge and applying machine learning aiming to improve the
performance of techniques to identify source code experts. The goal of this
study is to investigate opportunities to improve the performance of existing
techniques to recommend source code files experts. We built an oracle by
collecting data from the development history and surveying developers of 113
software projects. Then, we use this oracle to: (i) analyze the correlation
between measures extracted from the development history and the developers
source code knowledge and (ii) investigate the use of machine learning
classifiers by evaluating their performance in identifying source code files
experts. First Authorship and Recency of Modification are the variables with
the highest positive and negative correlations with source code knowledge,
respectively. Machine learning classifiers outperformed the linear techniques
(F-Measure = 71% to 73%) in the public dataset, but this advantage is not clear
in the private dataset, with F-Measure ranging from 55% to 68% for the linear
techniques and 58% to 67% for ML techniques. Overall, the linear techniques and
the machine learning classifiers achieved similar performance, particularly if
we analyze F-Measure. However, machine learning classifiers usually get higher
precision while linear techniques obtained the highest recall values.
|
[{'version': 'v1', 'created': 'Tue, 16 Aug 2022 02:18:53 GMT'}]
|
2022-08-17
|
[array(['Cury', 'Otávio', ''], dtype=object)
array(['Avelino', 'Guilherme', ''], dtype=object)
array(['Neto', 'Pedro Santos', ''], dtype=object)
array(['Britto', 'Ricardo', ''], dtype=object)
array(['Valente', 'Marco Túlio', ''], dtype=object)]
|
1,402 |
cond-mat/0007046
|
Niels Asger Mortensen
|
Niels Asger Mortensen, Karsten Flensberg, and Antti-Pekka Jauho
|
Coulomb Drag in Coherent Mesoscopic Systems
|
4 pages including 2 figures. Minor changes. Accepted for publication
in Phys. Rev. Lett
|
Phys. Rev. Lett. 86, 1841 (2001).
|
10.1103/PhysRevLett.86.1841
| null |
cond-mat.mes-hall
| null |
We present a theory for Coulomb drag between two mesoscopic systems. Our
formalism expresses the drag in terms of scattering matrices and wave
functions, and its range of validity covers both ballistic and disordered
systems. The consequences can be worked out either by analytic means, such as
the random matrix theory, or by numerical simulations. We show that Coulomb
drag is sensitive to localized states, which usual transport measurements do
not probe. For chaotic 2D-systems we find a vanishing average drag, with a
nonzero variance. Disordered 1D-wires show a finite drag, with a large
variance, giving rise to a possible sign change of the induced current.
|
[{'version': 'v1', 'created': 'Tue, 4 Jul 2000 11:08:29 GMT'}
{'version': 'v2', 'created': 'Sat, 16 Dec 2000 10:20:17 GMT'}]
|
2007-05-23
|
[array(['Mortensen', 'Niels Asger', ''], dtype=object)
array(['Flensberg', 'Karsten', ''], dtype=object)
array(['Jauho', 'Antti-Pekka', ''], dtype=object)]
|
1,403 |
1006.2491
|
James Beacham
|
James Beacham
|
Higgs to Four Taus at ALEPH
|
To appear in the proceedings of the 45th Rencontres de Moriond on QCD
and High Energy Interactions, La Thuile, Valle d'Aosta, Italy, 13-20 Mar
2010. 4 pages, 1 figure
| null | null | null |
hep-ex hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A search has been performed on 683 pb$^{-1}$ of data collected by the ALEPH
detector at the Large Electron-Positron (LEP), collider at centre-of-mass
energies from 183 to 209 $\mathrm{GeV}$ looking for a Higgs boson decaying into
four $\tau$ leptons via intermediate pseudoscalar $a$ particles, for a Higgs
mass range of 70 to 114 $\mathrm{GeV} / c^2$ and an $a$ mass range of 4 to 12
$\mathrm{GeV} / c^2$. No excess above background is seen and a limit is placed
on $\xi^2 = \frac{\sigma(e^+ e^-\ra Z+h)}{\sigma_{SM}(e^+ e^-\ra
Z+h)}\times(h\ra aa)\times(a\ra \tau^+\tau^-)^2$ in the $m_h, m_a$ plane. For
$m_h < 107 \; \mathrm{GeV} / c^2$ and $m_a < 10 \; \mathrm{GeV} / c^2$, $\xi^2
> 1$ can be excluded at the 95\% confidence level.
|
[{'version': 'v1', 'created': 'Sat, 12 Jun 2010 20:50:22 GMT'}]
|
2010-06-15
|
[array(['Beacham', 'James', ''], dtype=object)]
|
1,404 |
physics/0601185
|
M. D. Betterton
|
Jinyu Li, Philip C. Nelson, and M. D. Betterton
|
DNA entropic elasticity for short molecules attached to beads
|
30 pages, 10 figures
| null | null | null |
physics.bio-ph cond-mat.soft q-bio.BM
| null |
Single-molecule experiments in which force is applied to DNA or RNA molecules
have enabled important discoveries of nucleic acid properties and nucleic
acid-enzyme interactions. These experiments rely on a model of the polymer
force-extension behavior to calibrate the experiments; typically the
experiments use the worm-like chain (WLC) theory for double-stranded DNA and
RNA. This theory agrees well with experiments for long molecules. Recent
single-molecule experiments have used shorter molecules, with contour lengths
in the range of 1-10 persistence lengths. Most WLC theory calculations to date
have assumed infinite molecule lengths, and do not agree well with experiments
on shorter chains. Key physical effects that become important when shorter
molecules are used include (i) boundary conditions which constrain the allowed
fluctuations at the ends of the molecule and (ii) rotational fluctuations of
the bead to which the polymer is attached, which change the apparent extension
of the molecule. We describe the finite worm-like chain (FWLC) theory, which
takes into account these effects. We show the FWLC predictions diverge from the
classic WLC solution for molecules with contour lengths a few times the
persistence length. Thus the FWLC will allow more accurate experimental
calibration for relatively short molecules, facilitating future discoveries in
single-molecule force microscopy.
|
[{'version': 'v1', 'created': 'Tue, 24 Jan 2006 02:41:24 GMT'}]
|
2011-11-09
|
[array(['Li', 'Jinyu', ''], dtype=object)
array(['Nelson', 'Philip C.', ''], dtype=object)
array(['Betterton', 'M. D.', ''], dtype=object)]
|
1,405 |
1703.03506
|
Iain Raeburn
|
Astrid an Huef, Iain Raeburn, Ilija Tolich
|
Structure theorems for star-commuting power partial isometries
| null |
Linear Algebra and its Applications 481 (2015), 107-114
| null | null |
math.FA math.OA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We give a new formulation and proof of a theorem of Halmos and Wallen on the
structure of power partial isometries on Hilbert space. We then use this
theorem to give a structure theorem for a finite set of partial isometries
which star-commute: each operator commutes with the others and with their
adjoints.
|
[{'version': 'v1', 'created': 'Fri, 10 Mar 2017 01:32:58 GMT'}]
|
2017-03-13
|
[array(['Huef', 'Astrid an', ''], dtype=object)
array(['Raeburn', 'Iain', ''], dtype=object)
array(['Tolich', 'Ilija', ''], dtype=object)]
|
1,406 |
1505.02596
|
Natalia Zorii
|
Natalia Zorii
|
Constrained Gauss variational problem for condensers with touching
plates
|
14 pages
| null | null | null |
math.CA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study a constrained minimum energy problem with an external field relative
to the Riesz kernel of an arbitrary order for a generalized condenser with
touching oppositely-charged plates. Conditions sufficient for the solvability
of the problem are obtained. Our arguments are mainly based on the definition
of an appropriate metric structure on a set of vector measures associated with
a generalized condenser and the establishment of a completeness theorem for the
corresponding metric space.
|
[{'version': 'v1', 'created': 'Mon, 11 May 2015 13:12:48 GMT'}]
|
2015-05-12
|
[array(['Zorii', 'Natalia', ''], dtype=object)]
|
1,407 |
hep-th/0612306
|
Jurgen Fuchs
|
Jens Fjelstad, Jurgen Fuchs, Ingo Runkel, Christoph Schweigert
|
Uniqueness of open/closed rational CFT with given algebra of open states
|
77 pages, several figures; v2: minor corrections, version published
in ATMP
|
Adv.Theor.Math.Phys.12:1283-1375,2008
| null |
KCL-MTH-06-18, ZMP-HH/2006-21, Hamburger Beitr. Nr. 260
|
hep-th math.CT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study the sewing constraints for rational two-dimensional conformal field
theory on oriented surfaces with possibly non-empty boundary. The boundary
condition is taken to be the same on all segments of the boundary. The
following uniqueness result is established: For a solution to the sewing
constraints with nondegenerate closed state vacuum and nondegenerate two-point
correlators of boundary fields on the disk and of bulk fields on the sphere, up
to equivalence all correlators are uniquely determined by the one-, two,- and
three-point correlators on the disk. Thus for any such theory every consistent
collection of correlators can be obtained by the TFT approach of
hep-th/0204148, hep-th/0503194. As morphisms of the category of world sheets we
include not only homeomorphisms, but also sewings; interpreting the correlators
as a natural transformation then encodes covariance both under homeomorphisms
and under sewings of world sheets.
|
[{'version': 'v1', 'created': 'Fri, 29 Dec 2006 20:33:49 GMT'}
{'version': 'v2', 'created': 'Fri, 7 Nov 2008 14:23:26 GMT'}]
|
2009-02-26
|
[array(['Fjelstad', 'Jens', ''], dtype=object)
array(['Fuchs', 'Jurgen', ''], dtype=object)
array(['Runkel', 'Ingo', ''], dtype=object)
array(['Schweigert', 'Christoph', ''], dtype=object)]
|
1,408 |
1712.10132
|
Thomas Laurent
|
Thomas Laurent and James von Brecht
|
The Multilinear Structure of ReLU Networks
| null | null | null | null |
cs.LG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study the loss surface of neural networks equipped with a hinge loss
criterion and ReLU or leaky ReLU nonlinearities. Any such network defines a
piecewise multilinear form in parameter space. By appealing to harmonic
analysis we show that all local minima of such network are non-differentiable,
except for those minima that occur in a region of parameter space where the
loss surface is perfectly flat. Non-differentiable minima are therefore not
technicalities or pathologies; they are heart of the problem when investigating
the loss of ReLU networks. As a consequence, we must employ techniques from
nonsmooth analysis to study these loss surfaces. We show how to apply these
techniques in some illustrative cases.
|
[{'version': 'v1', 'created': 'Fri, 29 Dec 2017 07:14:53 GMT'}
{'version': 'v2', 'created': 'Mon, 23 Jul 2018 16:43:19 GMT'}]
|
2018-07-24
|
[array(['Laurent', 'Thomas', ''], dtype=object)
array(['von Brecht', 'James', ''], dtype=object)]
|
1,409 |
math-ph/0607025
|
Michael Aizenman
|
Michael Aizenman
|
Perspectives in Statistical Mechanics
|
Dedicated to Barry Simon on the occasion of his sixtieth birthday
|
Spectral Theory and Mathematical Physics: B. Simon Festschrift, F.
Gesztesy, P. Deift, C. Galvez, P.Perry, W. Schlag (eds.) Proceedings of
Symposia in Pure Mathematics, vol. 76.1 (AMS, 2007).
| null | null |
math-ph math.MP
| null |
Without attempting to summarize the vast field of statistical mechanics, we
briefly mention some of the progress that was made in areas which have enjoyed
Barry Simon's interests. In particular, we focus on rigorous non-perturbative
results which provide insight on the spread of correlations in Gibbs
equilibrium states and yield information on phase transitions and critical
phenomena. Briefly mentioned also are certain spinoffs, where ideas which have
been fruitful within the context of statistical mechanics proved to be of use
in other areas, and some recent results which relate to previously open
questions and conjectures.
|
[{'version': 'v1', 'created': 'Wed, 12 Jul 2006 16:57:23 GMT'}]
|
2008-09-29
|
[array(['Aizenman', 'Michael', ''], dtype=object)]
|
1,410 |
2204.06200
|
A-Li Luo
|
Jing Chen, A-Li Luo, Yin-Bi Li, Xiang-Lei Chen, Rui Wang, Shuo Li,
Bing Du, and Xiao-Xiao Ma
|
S-type stars discovered in Medium-Resolution Spectra of LAMOST DR9
|
19 pages, 15 Figures, Accepted to publish in ApJ
| null |
10.3847/1538-4357/ac66de
| null |
astro-ph.SR astro-ph.GA
|
http://creativecommons.org/licenses/by/4.0/
|
In this paper, we report on 606 S-type stars identified from Data Release 9
of the LAMOST medium-resolution spectroscopic (MRS) survey, and 539 of them are
reported for the first time. The discovery of these stars is a three-step
process, i.e., selecting with the ZrO band indices greater than 0.25, excluding
non-S-type stars with the iterative Support Vector Machine method, and finally
retaining stars with absolute bolometric magnitude larger than -7.1. The 606
stars are consistent with the distribution of known S-type stars in the
color-magnitude diagram. We estimated the C/Os using the [C/Fe] and [O/Fe]
provided by APOGEE and the MARCS model for S-type stars, respectively, and the
results of the two methods show that C/Os of all stars are larger than 0.5.
Both the locations on the color-magnitude diagram and C/Os further verify the
nature of our S-type sample. Investigating the effect of TiO and atmospheric
parameters on ZrO with the sample, we found that log g has a more significant
impact on ZrO than Teff and [Fe/H], and both TiO and log g may negatively
correlate with ZrO. According to the criterion of Tian et al. (2020), a total
of 238 binary candidates were found by the zero-point-calibrated radial
velocities from the officially released catalog of LAMOST MRS and the catalog
of Zhang et al. (2021). A catalog of these 606 S-type stars is available from
the following link https://doi.org/10.12149/101097.
|
[{'version': 'v1', 'created': 'Wed, 13 Apr 2022 06:59:28 GMT'}]
|
2022-06-08
|
[array(['Chen', 'Jing', ''], dtype=object)
array(['Luo', 'A-Li', ''], dtype=object)
array(['Li', 'Yin-Bi', ''], dtype=object)
array(['Chen', 'Xiang-Lei', ''], dtype=object)
array(['Wang', 'Rui', ''], dtype=object)
array(['Li', 'Shuo', ''], dtype=object)
array(['Du', 'Bing', ''], dtype=object)
array(['Ma', 'Xiao-Xiao', ''], dtype=object)]
|
1,411 |
1005.1908
|
Michael Buchoff
|
Michael I. Buchoff
|
Topics in Lattice QCD and Effective Field Theory
|
Ph.D Dissertation, 86 pages, 18 figures
| null | null |
UMD-40762-478
|
hep-lat nucl-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Effective field theories provide a formalism for categorizing low-energy
effects of a high-energy fundamental theory in terms of the low-energy degrees
of freedom. This process has been well established in mapping the fundamental
theory of QCD in terms of the hadronic degrees of freedom, which allows for
quantitative connections and predictions between hardronic observables. A more
direct approach to performing the non-perturbative QCD calculations is through
lattice QCD. These computationally intensive calculations approximate continuum
physics with a discretized lattice to extract hadronic phenomena from first
principles. However, as in any approximation, there are multiple systematic
errors between lattice QCD calculation and actual hardronic phenomena. To
account for these systematic effects in terms of hadronic interactions,
effective field theory proves to be useful. However, the fundamental theory of
interest here is lattice QCD, as opposed to the usual continuum QCD. In this
work, the basics of this process are outlined, and multiple original
calculations are presented: effective field theory for anisotropic lattices,
I=2 $\pi\pi$ scattering for isotropic, anisotropic, and twisted mass lattices.
Additionally, a usage of effective field theories and the employment of an
isospin chemical potential on the lattice is proposed to extract several
computationally difficult scattering parameters. Lastly, recently proposed
local, chiral lattice actions are analyzed in the framework of effective field
theory, which illuminates various challenges in simulating such actions.
|
[{'version': 'v1', 'created': 'Tue, 11 May 2010 18:47:46 GMT'}]
|
2015-03-17
|
[array(['Buchoff', 'Michael I.', ''], dtype=object)]
|
1,412 |
1912.00753
|
Zhiwen Tang
|
Zhiwen Tang, Grace Hui Yang
|
Corpus-Level End-to-End Exploration for Interactive Systems
|
Accepted into AAAI 2020
| null |
10.1609/aaai.v34i03.5635
| null |
cs.IR cs.AI
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A core interest in building Artificial Intelligence (AI) agents is to let
them interact with and assist humans. One example is Dynamic Search (DS), which
models the process that a human works with a search engine agent to accomplish
a complex and goal-oriented task. Early DS agents using Reinforcement Learning
(RL) have only achieved limited success for (1) their lack of direct control
over which documents to return and (2) the difficulty to recover from wrong
search trajectories. In this paper, we present a novel corpus-level end-to-end
exploration (CE3) method to address these issues. In our method, an entire text
corpus is compressed into a global low-dimensional representation, which
enables the agent to gain access to the full state and action spaces, including
the under-explored areas. We also propose a new form of retrieval function,
whose linear approximation allows end-to-end manipulation of documents.
Experiments on the Text REtrieval Conference (TREC) Dynamic Domain (DD) Track
show that CE3 outperforms the state-of-the-art DS systems.
|
[{'version': 'v1', 'created': 'Sat, 23 Nov 2019 00:38:56 GMT'}
{'version': 'v2', 'created': 'Wed, 9 Jun 2021 00:30:59 GMT'}]
|
2021-06-10
|
[array(['Tang', 'Zhiwen', ''], dtype=object)
array(['Yang', 'Grace Hui', ''], dtype=object)]
|
1,413 |
1002.0167
|
Spyros Sotiriadis
|
Spyros Sotiriadis, John Cardy
|
Quantum quench in interacting field theory: a self-consistent
approximation
|
20 pages, 15 figures / new citations added, minor changes, typos
corrected.
|
Phys.Rev.B81:134305,2010
|
10.1103/PhysRevB.81.134305
| null |
quant-ph cond-mat.stat-mech hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study a composite quantum quench of the energy gap and the interactions in
the interacting \phi^4 model using a self-consistent approximation. Firstly we
review the results for free theories where a quantum quench of the energy gap
or mass leads for long times to stationary behaviour with thermal
characteristics. An exception to this rule is the 2d case with zero mass after
the quench. In the composite quench however we find that the effect of the
interactions in our approximation is simply to effectively change the value of
the mass. This means on the one hand that the interacting model also exhibits
the same stationary behaviour and on the other hand that this is now true even
for the massless 2d case.
|
[{'version': 'v1', 'created': 'Mon, 1 Feb 2010 02:02:02 GMT'}
{'version': 'v2', 'created': 'Wed, 14 Apr 2010 15:27:36 GMT'}]
|
2014-11-20
|
[array(['Sotiriadis', 'Spyros', ''], dtype=object)
array(['Cardy', 'John', ''], dtype=object)]
|
1,414 |
2103.03345
|
Christopher Plumberg
|
Nicholas Summerfield, Bing-Nan Lu, Christopher Plumberg, Dean Lee,
Jacquelyn Noronha-Hostler, Anthony Timmins
|
$^{16}\mathrm{O}^{16}\mathrm{O}$ at RHIC and the LHC comparing $\alpha$
clustering vs substructure
|
6 pages, 5 figures, 92 references
|
Phys. Rev. C 104, 041901 (2021)
|
10.1103/PhysRevC.104.L041901
| null |
nucl-th nucl-ex
|
http://creativecommons.org/licenses/by/4.0/
|
Collisions of light and heavy nuclei in relativistic heavy-ion collisions
have been shown to be sensitive to nuclear structure. With a proposed
$^{16}\mathrm{O}^{16}\mathrm{O}$ run at the LHC and RHIC we study the potential
for finding $\alpha$ clustering in $^{16}$O. Here we use the state-of-the-art
iEBE-VISHNU package with $^{16}$O nucleonic configurations from {\rm ab initio}
nuclear lattice simulations. This setup was tuned using a Bayesian analysis on
pPb and PbPb systems. We find that the $^{16}\mathrm{O}^{16}\mathrm{O}$ system
always begins far from equilibrium and that at LHC and RHIC it approaches the
regime of hydrodynamic applicability only at very late times. Finally, by
taking ratios of flow harmonics we are able to find measurable differences
between $\alpha$-clustering, nucleonic, and subnucleonic degrees of freedom in
the initial state.
|
[{'version': 'v1', 'created': 'Thu, 4 Mar 2021 21:47:36 GMT'}]
|
2021-10-13
|
[array(['Summerfield', 'Nicholas', ''], dtype=object)
array(['Lu', 'Bing-Nan', ''], dtype=object)
array(['Plumberg', 'Christopher', ''], dtype=object)
array(['Lee', 'Dean', ''], dtype=object)
array(['Noronha-Hostler', 'Jacquelyn', ''], dtype=object)
array(['Timmins', 'Anthony', ''], dtype=object)]
|
1,415 |
1505.05362
|
Francoise Truc
|
Ognjen Milatovic (UNF), Francoise Truc (IF)
|
Self-adjoint extensions of differential operators on Riemannian
manifolds
| null | null | null |
IF\_PREPUB
|
math.SP math-ph math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study $H=D^*D+V$, where $D$ is a first order elliptic differential
operator acting on sections of a Hermitian vector bundle over a Riemannian
manifold $M$, and $V$ is a Hermitian bundle endomorphism. In the case when $M$
is geodesically complete, we establish the essential self-adjointness of
positive integer powers of $H$.
In the case when $M$ is not necessarily geodesically complete, we give a
sufficient condition for the essential self-adjointness of $H$, expressed in
terms of the behavior of $V$ relative to the Cauchy boundary of $M$.
|
[{'version': 'v1', 'created': 'Wed, 20 May 2015 13:18:10 GMT'}]
|
2015-05-21
|
[array(['Milatovic', 'Ognjen', '', 'UNF'], dtype=object)
array(['Truc', 'Francoise', '', 'IF'], dtype=object)]
|
1,416 |
0806.1703
|
Christos Efthymiopoulos
|
C. Efthymiopoulos
|
On the connection between the Nekhoroshev theorem and Arnold Diffusion
|
Accepted in Celestial Mechanics and Dynamical Astronomy
| null |
10.1007/s10569-008-9151-8
| null |
nlin.CD
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The analytical techniques of the Nekhoroshev theorem are used to provide
estimates on the coefficient of Arnold diffusion along a particular resonance
in the Hamiltonian model of Froeschl\'{e} et al. (2000). A resonant normal form
is constructed by a computer program and the size of its remainder
$||R_{opt}||$ at the optimal order of normalization is calculated as a function
of the small parameter $\epsilon$. We find that the diffusion coefficient
scales as $D\propto||R_{opt}||^3$, while the size of the optimal remainder
scales as $||R_{opt}|| \propto\exp(1/\epsilon^{0.21})$ in the range
$10^{-4}\leq\epsilon \leq 10^{-2}$. A comparison is made with the numerical
results of Lega et al. (2003) in the same model.
|
[{'version': 'v1', 'created': 'Tue, 10 Jun 2008 16:37:50 GMT'}]
|
2009-11-13
|
[array(['Efthymiopoulos', 'C.', ''], dtype=object)]
|
1,417 |
gr-qc/0103080
|
Ian G. Moss
|
Wenceslao S. German and Ian G. Moss
|
Cauchy horizon stability and cosmic censorship
|
6 pages, 3 figures
|
Class.Quant.Grav. 18 (2001) 5097-5102
|
10.1088/0264-9381/18/23/306
| null |
gr-qc
| null |
Some interesting consequences of spacelike matter shells are presented, in
particular the possibility of travelling through Cauchy horizons and violating
the strong cosmic censorship principle. These show that the weak energy
condition does not guarentee cosmic censorship.
|
[{'version': 'v1', 'created': 'Thu, 22 Mar 2001 14:16:55 GMT'}]
|
2009-11-07
|
[array(['German', 'Wenceslao S.', ''], dtype=object)
array(['Moss', 'Ian G.', ''], dtype=object)]
|
1,418 |
1502.04275
|
Yukun Zhu
|
Yukun Zhu, Raquel Urtasun, Ruslan Salakhutdinov, Sanja Fidler
|
segDeepM: Exploiting Segmentation and Context in Deep Neural Networks
for Object Detection
| null | null | null | null |
cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper, we propose an approach that exploits object segmentation in
order to improve the accuracy of object detection. We frame the problem as
inference in a Markov Random Field, in which each detection hypothesis scores
object appearance as well as contextual information using Convolutional Neural
Networks, and allows the hypothesis to choose and score a segment out of a
large pool of accurate object segmentation proposals. This enables the detector
to incorporate additional evidence when it is available and thus results in
more accurate detections. Our experiments show an improvement of 4.1% in mAP
over the R-CNN baseline on PASCAL VOC 2010, and 3.4% over the current
state-of-the-art, demonstrating the power of our approach.
|
[{'version': 'v1', 'created': 'Sun, 15 Feb 2015 02:53:56 GMT'}]
|
2015-02-17
|
[array(['Zhu', 'Yukun', ''], dtype=object)
array(['Urtasun', 'Raquel', ''], dtype=object)
array(['Salakhutdinov', 'Ruslan', ''], dtype=object)
array(['Fidler', 'Sanja', ''], dtype=object)]
|
1,419 |
2008.09640
|
Fellype Nascimento
|
Fellype do Nascimento, Konstantin Kostov, Munemasa Machida, Alexander
Flacker
|
Properties of DBD Plasma Jets using Powered Electrode With and Without
Contact with the Plasma
|
15 pages, 8 figures
|
Science, Vol. 49, April 2021, pp. 1293-1301
|
10.1109/TPS.2021.3067159
| null |
physics.plasm-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
An experimental investigation comparing the properties of plasma jets in
dielectric barrier discharge (DBD) configurations using a powered electrode
with and without a dielectric barrier, while keeping a second dielectric
barrier over the grounded electrode, is reported in this work. For this
purpose, two different power sources were used to produce the plasma jets, with
one of them producing a pulsed high-voltage (HV) output and the other one
producing a pulse-like HV output, which consists of a damped sine HV waveform.
Measurements of plasma parameters were performed for both configurations using
argon and helium as working gases. As a result, if the pulsed power source is
used, significant differences were found in discharge power ($P_{plasma}$),
rotational and vibrational temperatures ($T_r$ and $T_v$, respectively) when
switching from one configuration to the other. On the other hand, using the
pulse-like HV only the $P_{plasma}$ parameter presented significant differences
when switching the electrode's configuration. For the pulsed source it has been
observed that despite the remarkable increase in $P_{plasma}$ when changing
from the double barrier configuration to the single barrier one, the values
obtained for $T_r$ and $T_v$ also increased, but not in the same proportion as
the increase in $P_{plasma}$, which suggests a non-linear dependency between
temperatures and discharge power in the plasma jet. As an example for
application of plasmas in both configurations, tests in an attempt to remove
copper films deposited on alumina substrates were performed and, as a result,
there was significant material removal only when the powered electrode was in
contact with the plasma. As a general conclusion, if higher power is really
required for some application it is better to use this configuration.
|
[{'version': 'v1', 'created': 'Fri, 21 Aug 2020 18:35:11 GMT'}
{'version': 'v2', 'created': 'Sat, 24 Oct 2020 12:23:58 GMT'}
{'version': 'v3', 'created': 'Wed, 14 Apr 2021 18:13:51 GMT'}]
|
2021-04-16
|
[array(['Nascimento', 'Fellype do', ''], dtype=object)
array(['Kostov', 'Konstantin', ''], dtype=object)
array(['Machida', 'Munemasa', ''], dtype=object)
array(['Flacker', 'Alexander', ''], dtype=object)]
|
1,420 |
hep-ph/0404053
|
Mikhail Gorshteyn
|
M. Gorchtein, D. Drechsel, M.M. Giannini, E. Santopinto, and L. Tiator
|
Generalized sum rules of the nucleon in the constituent quark model
|
26 pages, 10 figures
|
Phys.Rev.C70:055202,2004
|
10.1103/PhysRevC.70.055202
| null |
hep-ph
| null |
We study the generalized sum rules and polarizabilities of the nucleon in the
framework of the hypercentral constituent quark model. We include in the
calculation all the well known $3^*$ and $4^*$ resonances and consider all the
generalized sum rules for which there are data available. To test the model
dependence of the calculation, we compare our results to the results obtained
in the harmonic oscillator CQM. We furthermore confront our results to the
model-independent sum rules values and to the predictions of the
phenomenological MAID model. The CQM calculations provide a good description of
most of the presented generalized sum rules in the intermediate $Q^2$ region
(above $\sim0.2$ GeV$^2$) while they encounter difficulties in describing these
observables at low $Q^2$, where the effects of the pion cloud, not included in
the present calculation, are expected to be important.
|
[{'version': 'v1', 'created': 'Tue, 6 Apr 2004 14:44:37 GMT'}]
|
2010-03-02
|
[array(['Gorchtein', 'M.', ''], dtype=object)
array(['Drechsel', 'D.', ''], dtype=object)
array(['Giannini', 'M. M.', ''], dtype=object)
array(['Santopinto', 'E.', ''], dtype=object)
array(['Tiator', 'L.', ''], dtype=object)]
|
1,421 |
2005.08314
|
Pengcheng Yin
|
Pengcheng Yin, Graham Neubig, Wen-tau Yih, Sebastian Riedel
|
TaBERT: Pretraining for Joint Understanding of Textual and Tabular Data
|
To Appear at ACL 2020
| null | null | null |
cs.CL cs.LG
|
http://creativecommons.org/licenses/by/4.0/
|
Recent years have witnessed the burgeoning of pretrained language models
(LMs) for text-based natural language (NL) understanding tasks. Such models are
typically trained on free-form NL text, hence may not be suitable for tasks
like semantic parsing over structured data, which require reasoning over both
free-form NL questions and structured tabular data (e.g., database tables). In
this paper we present TaBERT, a pretrained LM that jointly learns
representations for NL sentences and (semi-)structured tables. TaBERT is
trained on a large corpus of 26 million tables and their English contexts. In
experiments, neural semantic parsers using TaBERT as feature representation
layers achieve new best results on the challenging weakly-supervised semantic
parsing benchmark WikiTableQuestions, while performing competitively on the
text-to-SQL dataset Spider. Implementation of the model will be available at
http://fburl.com/TaBERT .
|
[{'version': 'v1', 'created': 'Sun, 17 May 2020 17:26:40 GMT'}]
|
2020-05-19
|
[array(['Yin', 'Pengcheng', ''], dtype=object)
array(['Neubig', 'Graham', ''], dtype=object)
array(['Yih', 'Wen-tau', ''], dtype=object)
array(['Riedel', 'Sebastian', ''], dtype=object)]
|
1,422 |
1810.08312
|
Sydney Otten
|
Sydney Otten, Krzysztof Rolbiecki, Sascha Caron, Jong-Soo Kim, Roberto
Ruiz de Austri, Jamie Tattersall
|
DeepXS: Fast approximation of MSSM electroweak cross sections at NLO
|
7 pages, 3 figures
| null | null | null |
hep-ph hep-ex
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present a deep learning solution to the prediction of particle production
cross sections over a complicated, high-dimensional parameter space. We
demonstrate the applicability by providing state-of-the-art predictions for the
production of charginos and neutralinos at the Large Hadron Collider (LHC) at
the next-to-leading order in the phenomenological MSSM-19 and explicitly
demonstrate the performance for $pp\to\tilde{\chi}^+_1\tilde{\chi}^-_1,$
$\tilde{\chi}^0_2\tilde{\chi}^0_2$ and $\tilde{\chi}^0_2\tilde{\chi}^\pm_1$ as
a proof of concept which will be extended to all SUSY electroweak pairs. We
obtain errors that are lower than the uncertainty from scale and parton
distribution functions with mean absolute percentage errors of well below
$0.5\,\%$ allowing a safe inference at the next-to-leading order with inference
times that improve the Monte Carlo integration procedures that have been
available so far by a factor of $\mathcal{O}(10^7)$ from
$\mathcal{O}(\rm{min})$ to $\mathcal{O}(\mu\rm{s})$ per evaluation.
|
[{'version': 'v1', 'created': 'Thu, 18 Oct 2018 23:55:24 GMT'}
{'version': 'v2', 'created': 'Tue, 4 Jun 2019 21:52:43 GMT'}]
|
2019-06-06
|
[array(['Otten', 'Sydney', ''], dtype=object)
array(['Rolbiecki', 'Krzysztof', ''], dtype=object)
array(['Caron', 'Sascha', ''], dtype=object)
array(['Kim', 'Jong-Soo', ''], dtype=object)
array(['de Austri', 'Roberto Ruiz', ''], dtype=object)
array(['Tattersall', 'Jamie', ''], dtype=object)]
|
1,423 |
cond-mat/0409489
|
Cheng Chin
|
Cheng Chin
|
A simple mean field equation for condensates in the BEC-BCS crossover
regime
| null |
Phys. Rev. A 72, 041601 (2005)
|
10.1103/PhysRevA.72.041601
| null |
cond-mat.supr-con cond-mat.stat-mech
| null |
We present a mean field approach based on pairs of fermionic atoms to
describe condensates in the BEC-BCS crossover regime. By introducing an
effective potential, the mean field equation allows us to calculate the
chemical potential, the equation of states and the atomic correlation function.
The results agree surprisingly well with recent quantum Monte Carlo
calculations. We show that the smooth crossover from the bosonic mean field
repulsion between molecules to the Fermi pressure among atoms is associated
with the evolution of the atomic correlation function.
|
[{'version': 'v1', 'created': 'Mon, 20 Sep 2004 15:08:29 GMT'}
{'version': 'v2', 'created': 'Tue, 4 Jan 2005 16:17:05 GMT'}]
|
2007-05-23
|
[array(['Chin', 'Cheng', ''], dtype=object)]
|
1,424 |
2102.05937
|
Mihalis Kavousanakis
|
I. Lampropoulos and M. Kavousanakis
|
Assessment of intra-tumor heterogeneity in a two-dimensional vascular
tumor growth model
| null | null | null | null |
q-bio.PE
|
http://creativecommons.org/publicdomain/zero/1.0/
|
We present a two-dimensional continuum model of tumor growth, which treats
the tissue as a composition of six distinct fluid phases; their dynamics are
governed by the equations of mass and momentum conservation. Our model divides
the cancer cells phase into two sub-phases depending on their maturity state.
The same approach is also applied for the vasculature phase, which is divided
into young sprouts (products of angiogenesis), and fully formed-mature vessels.
The remaining two phases correspond to healthy cells and extracellular material
(ECM). Furthermore, the model foresees the existence of nutrient chemical
species, which are transferred within the tissue through diffusion or supplied
by the vasculature (blood vessels). The model is numerically solved with the
Finite Elements Method and computations are performed with the commercial
software Comsol Multiphysics. The numerical simulations predict that mature
cancer cells are well separated from young cancer cells, which form a
protective shield for the growing tumor. We study the effect of different
mitosis and death rates for mature and young cancer cells on the tumor growth
rate, and predict accelerated rates when the mitosis rate of young cancer cells
is higher compared to mature cancer cells.
|
[{'version': 'v1', 'created': 'Thu, 11 Feb 2021 10:54:40 GMT'}]
|
2021-02-12
|
[array(['Lampropoulos', 'I.', ''], dtype=object)
array(['Kavousanakis', 'M.', ''], dtype=object)]
|
1,425 |
1510.03370
|
Scott Garrabrant
|
Scott Garrabrant, Siddharth Bhaskar, Abram Demski, Joanna Garrabrant,
George Koleszarik, Evan Lloyd
|
Asymptotic Logical Uncertainty and The Benford Test
| null | null | null |
2015--11
|
cs.LG cs.AI
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We give an algorithm A which assigns probabilities to logical sentences. For
any simple infinite sequence of sentences whose truth-values appear
indistinguishable from a biased coin that outputs "true" with probability p, we
have that the sequence of probabilities that A assigns to these sentences
converges to p.
|
[{'version': 'v1', 'created': 'Mon, 12 Oct 2015 17:14:44 GMT'}]
|
2015-10-13
|
[array(['Garrabrant', 'Scott', ''], dtype=object)
array(['Bhaskar', 'Siddharth', ''], dtype=object)
array(['Demski', 'Abram', ''], dtype=object)
array(['Garrabrant', 'Joanna', ''], dtype=object)
array(['Koleszarik', 'George', ''], dtype=object)
array(['Lloyd', 'Evan', ''], dtype=object)]
|
1,426 |
cond-mat/0202122
|
Teber Sofian
|
Sofian Teber
|
Statistical properties of charged interfaces
|
17 pages, 11 figures
|
J. Phys.: Condens. Matter 14 (2002) 7811
|
10.1088/0953-8984/14/34/303
| null |
cond-mat.stat-mech
| null |
We consider the equilibrium statistical properties of interfaces submitted to
competing interactions; a long-range repulsive Coulomb interaction inherent to
the charged interface and a short-range, anisotropic, attractive one due to
either elasticity or confinement. We focus on one-dimensional interfaces such
as strings. Model systems considered for applications are mainly aggregates of
solitons in polyacetylene and other charge density wave systems, domain lines
in uniaxial ferroelectrics and the stripe phase of oxides. At zero temperature,
we find a shape instability which lead, via phase transitions, to tilted
phases. Depending on the regime, elastic or confinement, the order of the
zero-temperature transition changes. Thermal fluctuations lead to a pure
Coulomb roughening of the string, in addition to the usual one, and to the
presence of angular kinks. We suggest that such instabilities might explain the
tilting of stripes in cuprate oxides. The 3D problem of the charged wall is
also analyzed. The latter experiences instabilities towards various tilted
phases separated by a tricritical point in the elastic regime. In the
confinement regime, the increase of dimensionality favors either the melting of
the wall into a Wigner crystal of its constituent charges or a strongly
inclined wall which might have been observed in nickelate oxides.
|
[{'version': 'v1', 'created': 'Thu, 7 Feb 2002 17:17:40 GMT'}
{'version': 'v2', 'created': 'Fri, 11 Jul 2003 21:53:08 GMT'}]
|
2009-11-07
|
[array(['Teber', 'Sofian', ''], dtype=object)]
|
1,427 |
2011.14805
|
Chu Xu
|
Miguel Alvarez, Chu Xu, Manuel A. Rodriguez, Abdullah Al-Mamun,
Mohamed Wahba, Sean Brennan, and Hosam K. Fathy
|
Reducing Road Vehicle Fuel Consumption by Exploiting Connectivity and
Automation: A Literature Survey
| null |
14th International Symposium on Advanced Vehicle Control, 2018
| null | null |
eess.SY cs.SY
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This paper examines the degree to which connectivity and automation can
potentially reduce the overall fuel consumption of on-road vehicles. The paper
begins with a simulation study highlighting the tradeoff between: (i) the fuel
that a vehicle can save through speed trajectory shaping, versus (ii) the
additional inter-vehicle spacing needed for this trajectory shaping to be
feasible. This study shows that connectivity and automation are essential,
rather than merely useful, for substantial reductions in the fuel consumed by
fixed on-road vehicle powertrain/chassis configurations in traffic. Motivated
by this insight, we survey the literature on the fuel savings achievable
through different connected/automated vehicle technologies. This includes
optimal vehicle routing, eco-arrival/departure at intersections, platooning,
speed trajectory optimization, predictive driveline disengagement, predictive
gear shifting, and predictive powertrain accessory control. This survey shows
that the ability to shape vehicle speed trajectories collaboratively plays a
dominant role in reducing urban/suburban fuel consumption, while platooning
plays a dominant role in influencing the attainable fuel savings on the
highway. Moreover, the survey shows that the degree to which
connectivity/automation can reduce on-road vehicle fuel consumption, in both
urban/suburban and highway settings, depends critically on the integration of
powertrain- and chassis-level control.
|
[{'version': 'v1', 'created': 'Mon, 30 Nov 2020 14:04:28 GMT'}]
|
2020-12-01
|
[array(['Alvarez', 'Miguel', ''], dtype=object)
array(['Xu', 'Chu', ''], dtype=object)
array(['Rodriguez', 'Manuel A.', ''], dtype=object)
array(['Al-Mamun', 'Abdullah', ''], dtype=object)
array(['Wahba', 'Mohamed', ''], dtype=object)
array(['Brennan', 'Sean', ''], dtype=object)
array(['Fathy', 'Hosam K.', ''], dtype=object)]
|
1,428 |
hep-th/0108168
|
Gleb Arutjunov
|
G. Arutyunov
|
On Exceptional Non-renormalization Properties Of N=4 SYM
|
Contribution to the proceedings of the conference SUSY01 held in
Dubna, June 2001; Latex, 4p
| null |
10.1142/9789812778192_0073
|
AEI-2001-107
|
hep-th
| null |
We discuss non-renormalization properties of some composite operators in N=4
supersymmetric Yang-Mills theory.
|
[{'version': 'v1', 'created': 'Wed, 22 Aug 2001 16:57:15 GMT'}]
|
2017-08-23
|
[array(['Arutyunov', 'G.', ''], dtype=object)]
|
1,429 |
1308.0036
|
Sebastian Reineke
|
Sebastian Reineke, Nico Seidler, Shane R. Yost, Ferry Prins, William
A. Tisdale, and Marc A. Baldo
|
Highly efficient, dual state emission from an organic semiconductor
| null | null |
10.1063/1.4819444
| null |
cond-mat.mtrl-sci
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We report highly efficient, simultaneous fluorescence and phosphorescence
(74% yield) at room temperature from a single molecule ensemble of (BzP)PB
dispersed into a polymer host. The slow phosphorescence (208 ms lifetime) is
very efficient (50%) at room temperature and only possible because the
non-radiative rate for the triplet state is extremely low. The ability of an
organic molecule to function as an efficient dual state emitter at room
temperature is unusual and opens new fields of applications including the use
as broadband down-conversion emitters, optical sensors and attenuators, exciton
probes, and spin-independent intermediates for F\"orster resonant energy
transfer.
|
[{'version': 'v1', 'created': 'Wed, 31 Jul 2013 20:45:29 GMT'}]
|
2015-06-16
|
[array(['Reineke', 'Sebastian', ''], dtype=object)
array(['Seidler', 'Nico', ''], dtype=object)
array(['Yost', 'Shane R.', ''], dtype=object)
array(['Prins', 'Ferry', ''], dtype=object)
array(['Tisdale', 'William A.', ''], dtype=object)
array(['Baldo', 'Marc A.', ''], dtype=object)]
|
1,430 |
2112.05633
|
Peter Pauli
|
Peter Pauli (for the GlueX collaboration)
|
Accessing glue through photoproduction measurements at GlueX
|
Conference proceeding. Submitted to Suplemento de la Revista Mexicana
de F\'isica, 19th International conference on hadron spectroscopy and
structure in memoriam Simon Eidelman
| null | null | null |
hep-ex nucl-ex
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Photoproduction experiments are a key tool in the investigation of the
spectrum of hadronic states and the way gluons contribute to this spectrum. The
GlueX experiment, located at Jefferson Lab, features a linearly polarized
tagged photon beam and its detector system is optimized to measure a wide range
of neutral and charged final states. GlueX offers unique capabilities to study
the spectrum of hadrons and is dedicated to the search for hybrid mesons,
states with gluonic degrees of freedom. This talk presents first results from
our initial campaign of data taking which finished in 2018.
|
[{'version': 'v1', 'created': 'Fri, 10 Dec 2021 16:05:56 GMT'}]
|
2021-12-13
|
[array(['Pauli', 'Peter', '', 'for the GlueX collaboration'], dtype=object)]
|
1,431 |
1901.09932
|
Jeremy Leconte
|
Anthony Caldas, J\'er\'emy Leconte, Franck Selsis, Ingo Waldmann,
Pascal Bord\'e, Marco Rocchetto, Benjamin Charnay
|
Effects of a fully 3D atmospheric structure on exoplanet transmission
spectra: retrieval biases due to day-night temperature gradients
|
Accepted for publication at Astronomy and Astrophysics. Abstract
abridged to meet ArXiv size limit
|
A&A 623, A161 (2019)
|
10.1051/0004-6361/201834384
| null |
astro-ph.EP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Transmission spectroscopy provides us with information on the atmospheric
properties at the limb, which is often intuitively assumed to be a narrow
annulus around the planet. Consequently, studies have focused on the effect of
atmospheric horizontal heterogeneities along the limb. Here we demonstrate that
the region probed in transmission -- the limb -- extends significantly toward
the day and night sides of the planet. We show that the strong day-night
thermal and compositional gradients expected on synchronous exoplanets create
sufficient heterogeneities across the limb to result in important systematic
effects on the spectrum and bias its interpretation. To quantify these effects,
we developed a 3D radiative transfer model able to generate transmission
spectra of atmospheres based on 3D atmospheric structures. We first produce
synthetic JWST observations from a simulation of GJ 1214b and demonstrate the
necessity of a real 3D approach to model data for such precise observatories.
Second, we investigate how day-night temperature gradients cause a systematic
bias in retrieval analysis performed with 1D forward models. For that purpose
we synthesize a large set of forward spectra for prototypical HD 209458 b and
GJ 1214 b type planets varying the temperatures of the day and night sides as
well as the width of the transition region. We then perform typical retrieval
analyses and compare the retrieved parameters to the ground truth of the input
model. This study reveals systematic biases on the retrieved temperature (found
to be higher than the terminator temperature) and abundances. This is due to
the fact that the hotter dayside is more extended vertically and screens the
nightside. These biases are difficult to detect as the 1D profiles used in the
retrieval are found to provide an excellent match to the observed spectra. This
needs to be kept in mind when interpreting real data.
|
[{'version': 'v1', 'created': 'Mon, 28 Jan 2019 19:00:02 GMT'}]
|
2019-03-27
|
[array(['Caldas', 'Anthony', ''], dtype=object)
array(['Leconte', 'Jérémy', ''], dtype=object)
array(['Selsis', 'Franck', ''], dtype=object)
array(['Waldmann', 'Ingo', ''], dtype=object)
array(['Bordé', 'Pascal', ''], dtype=object)
array(['Rocchetto', 'Marco', ''], dtype=object)
array(['Charnay', 'Benjamin', ''], dtype=object)]
|
1,432 |
1809.04163
|
Edoardo Maria Ponti
|
Edoardo Maria Ponti, Ivan Vuli\'c, Goran Glava\v{s}, Nikola
Mrk\v{s}i\'c and Anna Korhonen
|
Adversarial Propagation and Zero-Shot Cross-Lingual Transfer of Word
Vector Specialization
|
Accepted at EMNLP 2018
| null |
10.18653/v1/D18-1026
| null |
cs.CL
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Semantic specialization is the process of fine-tuning pre-trained
distributional word vectors using external lexical knowledge (e.g., WordNet) to
accentuate a particular semantic relation in the specialized vector space.
While post-processing specialization methods are applicable to arbitrary
distributional vectors, they are limited to updating only the vectors of words
occurring in external lexicons (i.e., seen words), leaving the vectors of all
other words unchanged. We propose a novel approach to specializing the full
distributional vocabulary. Our adversarial post-specialization method
propagates the external lexical knowledge to the full distributional space. We
exploit words seen in the resources as training examples for learning a global
specialization function. This function is learned by combining a standard
L2-distance loss with an adversarial loss: the adversarial component produces
more realistic output vectors. We show the effectiveness and robustness of the
proposed method across three languages and on three tasks: word similarity,
dialog state tracking, and lexical simplification. We report consistent
improvements over distributional word vectors and vectors specialized by other
state-of-the-art specialization frameworks. Finally, we also propose a
cross-lingual transfer method for zero-shot specialization which successfully
specializes a full target distributional space without any lexical knowledge in
the target language and without any bilingual data.
|
[{'version': 'v1', 'created': 'Tue, 11 Sep 2018 21:08:00 GMT'}]
|
2018-11-02
|
[array(['Ponti', 'Edoardo Maria', ''], dtype=object)
array(['Vulić', 'Ivan', ''], dtype=object)
array(['Glavaš', 'Goran', ''], dtype=object)
array(['Mrkšić', 'Nikola', ''], dtype=object)
array(['Korhonen', 'Anna', ''], dtype=object)]
|
1,433 |
2205.15540
|
Wenzhuo Yang
|
Wenzhuo Yang and Jia Li and Caiming Xiong and Steven C.H. Hoi
|
MACE: An Efficient Model-Agnostic Framework for Counterfactual
Explanation
|
9 pages, 2 figures
| null | null | null |
cs.AI cs.LG
|
http://creativecommons.org/licenses/by-nc-sa/4.0/
|
Counterfactual explanation is an important Explainable AI technique to
explain machine learning predictions. Despite being studied actively, existing
optimization-based methods often assume that the underlying machine-learning
model is differentiable and treat categorical attributes as continuous ones,
which restricts their real-world applications when categorical attributes have
many different values or the model is non-differentiable. To make
counterfactual explanation suitable for real-world applications, we propose a
novel framework of Model-Agnostic Counterfactual Explanation (MACE), which
adopts a newly designed pipeline that can efficiently handle non-differentiable
machine-learning models on a large number of feature values. in our MACE
approach, we propose a novel RL-based method for finding good counterfactual
examples and a gradient-less descent method for improving proximity.
Experiments on public datasets validate the effectiveness with better validity,
sparsity and proximity.
|
[{'version': 'v1', 'created': 'Tue, 31 May 2022 04:57:06 GMT'}]
|
2022-06-01
|
[array(['Yang', 'Wenzhuo', ''], dtype=object)
array(['Li', 'Jia', ''], dtype=object)
array(['Xiong', 'Caiming', ''], dtype=object)
array(['Hoi', 'Steven C. H.', ''], dtype=object)]
|
1,434 |
2306.17416
|
Josephine Oppotsch
|
Josephine Oppotsch, Matthias Steinke, Miriam Fritsch, Fritz-Herbert
Heinsius, Thomas Held, Nikoline Hilse, Viktor Scherer, Ulrich Wiedner
|
A Simulation Study on Spatial and Time Resolution for a Cost-Effective
Positron Emission Particle Tracking System
|
Submitted to Particuology
| null | null | null |
hep-ex physics.ins-det
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This work is the second part of a simulation study investigating the
processing of densely packed and moving granular assemblies by positron
emission particle tracking (PEPT). Since medical PET scanners commonly used for
PEPT are very expensive, a PET-like detector system based on cost-effective
organic plastic scintillator bars is being developed and tested for its
capabilities. In this context, the spatial resolution of a resting positron
source, a source moving on a freely designed model path, and a particle motion
given by a DEM (Discrete Element Method) simulation is studied using Monte
Carlo simulations and the software toolkit Geant4. This not only extended the
simulation and reconstruction to a moving source but also significantly
improved the spatial resolution compared to previous work by adding
oversampling and iteration to the reconstruction algorithm. Furthermore, in the
case of a source following a trajectory developed from DEM simulations, a very
good resolution of about 1 mm in all three directions and an average
three-dimensional deviation between simulated and reconstructed events of 2.3
mm could be determined. Thus, the resolution for a realistic particle motion
within the generic grate system (which is the test rig for further experimental
studies) is well below the smallest particle size. The simulation of the
dependence of the reconstruction accuracy on tracer particle location revealed
a nearly constant efficiency within the entire detector system which
demonstrates that boundary effects can be neglected.
|
[{'version': 'v1', 'created': 'Fri, 30 Jun 2023 06:10:47 GMT'}]
|
2023-07-03
|
[array(['Oppotsch', 'Josephine', ''], dtype=object)
array(['Steinke', 'Matthias', ''], dtype=object)
array(['Fritsch', 'Miriam', ''], dtype=object)
array(['Heinsius', 'Fritz-Herbert', ''], dtype=object)
array(['Held', 'Thomas', ''], dtype=object)
array(['Hilse', 'Nikoline', ''], dtype=object)
array(['Scherer', 'Viktor', ''], dtype=object)
array(['Wiedner', 'Ulrich', ''], dtype=object)]
|
1,435 |
1904.13084
|
Junping Hu
|
Junping Hu, Chengyong Zhong, Weikang Wu, Ning Liu, Yu Liu, Shengyuan
A. Yang, Chuying Ouyang
|
Two-dimensional honeycomb borophene oxide: A promising anode material
offering super high capacity for Li/Na-ion batteries
| null |
J. Phys.: Condens. Matter 32 (2020) 065001
|
10.1088/1361-648X/ab4f4d
| null |
cond-mat.mtrl-sci
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Rational design of novel two-dimensional (2D) electrode materials with high
capacity is crucial for the further development of Li-ion and Na-ion batteries.
Herein, based on first-principles calculations, we systemically investigate Li
and Na storage behaviors in the recently discovered 2D topological nodal-loop
metal - the honeycomb borophene oxide (h-B2O). We show that h-B2O is an almost
ideal anode material. It has good conductivity before and after Li/Na
adsorption, fast ion diffusion with diffusion barrier less than 0.5 eV, low
open-circuit voltage (less than 1 V), and small lattice change (less than 6.2%)
during intercalation. Most remarkably, its theoretical storage capacity is
extremely high, reaching up to 2137 mAh/g for Li and 1425 mAh/g for Na. Its Li
storage capacity is more than six times higher than graphite (372 mAh/g), and
is actually the highest among all 2D materials discovered to date. Our results
strongly suggest that 2D h-B2O is an exceedingly promising anode material for
both Li- and Na-ion batteries with super high capacity.
|
[{'version': 'v1', 'created': 'Tue, 30 Apr 2019 07:34:30 GMT'}]
|
2019-11-22
|
[array(['Hu', 'Junping', ''], dtype=object)
array(['Zhong', 'Chengyong', ''], dtype=object)
array(['Wu', 'Weikang', ''], dtype=object)
array(['Liu', 'Ning', ''], dtype=object)
array(['Liu', 'Yu', ''], dtype=object)
array(['Yang', 'Shengyuan A.', ''], dtype=object)
array(['Ouyang', 'Chuying', ''], dtype=object)]
|
1,436 |
astro-ph/0111431
|
H. K. C. Yee
|
H.K.C. Yee and M.D. Gladders
|
Optical Surveys for Galaxy Clusters
|
14 pages, 7 figures, invited review in the proceedings of TAW8:
"AMiBA 2001: High-z Clusters, Missing Baryons, and CMB Polarization"; to be
published in ASP Conference Series, Eds. L.-W. Chen et al
| null | null | null |
astro-ph
| null |
We present a brief review of the history of optical searches of galaxy
clusters, starting from that of Abell. The traditional application of this
survey method suffers from contamination due to projection of galaxies along
the line of sight, which becomes increasingly more severe at higher redshift.
The new generation of wide-field CCD imagers has provided a renewed impetus for
optical surveys for clusters. We describe a new cluster finding technique using
the red sequence of early-type galaxies in galaxy groups and clusters, which
eliminates the projection problem by essentially producing a 3-D distribution
of red galaxies using two-filter imaging data. The Red-Sequence Cluster Survey
(RCS) is a 100 square degree optical survey, carried out using 4m class
telescopes, which is optimally designed to search for clusters at $0.5<z<1.4$\
utilizing this technique. We present preliminary results which indicate that
the RCS is extremely efficient in detecting galaxy clusters at these redshifts,
including a number of clusters with multiple strong lensing arcs.
|
[{'version': 'v1', 'created': 'Wed, 21 Nov 2001 23:19:18 GMT'}]
|
2009-09-25
|
[array(['Yee', 'H. K. C.', ''], dtype=object)
array(['Gladders', 'M. D.', ''], dtype=object)]
|
1,437 |
1108.2964
|
Dmitry Nerukh
|
Alexander G. Nerukh, Denis A. Zolotariov, Dmitry A. Nerukh
|
Bifurcating trajectory of non-diffractive electromagnetic Airy pulse
| null | null | null | null |
physics.optics
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The explicit expression for spatial-temporal Airy pulse is derived from the
Maxwell's equations in paraxial approximation. The trajectory of the pulse in
the time-space coordinates is analysed. The existence of a bifurcation point
that separates regions with qualitatively different features of the pulse
propagation is demonstrated. At this point the velocity of the pulse becomes
infinite and the orientation of it changes to the opposite.
|
[{'version': 'v1', 'created': 'Mon, 15 Aug 2011 10:12:51 GMT'}]
|
2011-08-16
|
[array(['Nerukh', 'Alexander G.', ''], dtype=object)
array(['Zolotariov', 'Denis A.', ''], dtype=object)
array(['Nerukh', 'Dmitry A.', ''], dtype=object)]
|
1,438 |
astro-ph/9712327
|
Ranjeev Misra
|
R. Misra, A. K. Kembhavi
|
Broadening of the Iron emission line in MCG-6-30-15 by Comptonization
|
2 figures. uses aasms4.sty, accepted by ApJ, email:
[email protected]
| null |
10.1086/305645
| null |
astro-ph
| null |
We show that the Iron K emission line from MCG-6-30-15 could be broadened due
to Comptonization by a surrounding highly ionized cloud with radius $\sim
10^{14}$ cms. We calculate the temperature of the cloud to be $\sim0.21\kev$,
provided a reasonable estimate of the UV flux is made. The X-ray/$\gamma$-ray
emission observed from the source is compatible with this model. Such a cloud
should be highly ionized and strong absorption edges are not expected from the
source (Fabian et al 1995).
For a $\onlyten{6}\msol$ black hole the size of the could corresponds to
about 300 Schwarzschild radius. The intrinsic line could then be emitted far
from the black hole and gravitational red-shift and Doppler effects would be
negligible. If the black hole mass is much larger than $\onlyten{6}\msol$,
gravitational/Doppler red-shifts would also contribute significantly to the
broadening.
We argue that the broad red wing observed in the source does not by itself
imply emission from regions close ($R < 5 r_s$) to the black hole. However,
Comptonization cannot produce a double peak. The presence of such a feature is
a clear sign of inner disk emission influenced by gravitational and Doppler
effects, perhaps broadened by the Comptonization. We note that simultaneous
broad band (2-100 keV) study of this source can also reveal (or rule out) the
presence of such a Comptonizing cloud.
|
[{'version': 'v1', 'created': 'Thu, 25 Dec 1997 11:54:06 GMT'}]
|
2015-06-24
|
[array(['Misra', 'R.', ''], dtype=object)
array(['Kembhavi', 'A. K.', ''], dtype=object)]
|
1,439 |
1708.04523
|
Weibo Gao WB Gao
|
Yu Zhou, Ziyu Wang, Abdullah Rasmita, Sejeong Kim, Amanuel Berhane,
Zoltan Bodrog, Giorgio Adamo, Adam Gali, Igor Aharonovich, Wei-bo Gao
|
Room-temperature solid state quantum emitters in the telecom range
|
Comments welcome
| null | null | null |
quant-ph cs.ET physics.app-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
On demand single photon emitters (SPEs) play a key role across a broad range
of quantum technologies, including quantum computation, quantum simulation,
quantum metrology and quantum communications. In quantum networks and quantum
key distribution protocols, where photons are employed as flying qubits,
telecom wavelength operation is preferred due to the reduced fibre loss.
However, despite the tremendous efforts to develop various triggered SPE
platforms, a robust source of triggered SPEs operating at room temperature and
the telecom wavelength is still missing. Here we report a triggered, optically
stable, room temperature solid state SPE operating at telecom wavelengths. The
emitters exhibit high photon purity (~ 5% multiphoton events) and a record-high
brightness of ~ 1.5 MHz. The emission is attributed to localized defects in a
gallium nitride (GaN) crystal. The high performance SPEs embedded in a
technologically mature semiconductor are promising for on-chip quantum
simulators and practical quantum communication technologies.
|
[{'version': 'v1', 'created': 'Wed, 2 Aug 2017 08:09:31 GMT'}]
|
2017-08-16
|
[array(['Zhou', 'Yu', ''], dtype=object)
array(['Wang', 'Ziyu', ''], dtype=object)
array(['Rasmita', 'Abdullah', ''], dtype=object)
array(['Kim', 'Sejeong', ''], dtype=object)
array(['Berhane', 'Amanuel', ''], dtype=object)
array(['Bodrog', 'Zoltan', ''], dtype=object)
array(['Adamo', 'Giorgio', ''], dtype=object)
array(['Gali', 'Adam', ''], dtype=object)
array(['Aharonovich', 'Igor', ''], dtype=object)
array(['Gao', 'Wei-bo', ''], dtype=object)]
|
1,440 |
2303.00017
|
Samuele Grandi
|
Chetan Deshmukh and Eduardo Beattie and Bernardo Casabone and Samuele
Grandi and Diana Serrano and Alban Ferrier and Philippe Goldner and David
Hunger and Hugues de Riedmatten
|
Detection of single ions in a nanoparticle coupled to a fiber cavity
| null | null | null | null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Many quantum information protocols require the storage and manipulation of
information over long times, and its exchange between nodes of a quantum
network across long distances. Implementing these protocols requires an
advanced quantum hardware, featuring, for example, a register of long-lived and
interacting qubits with an efficient optical interface in the telecommunication
band. Here we present the Purcell-enhanced detection of single solid-state ions
in erbium-doped nanoparticles placed in a fiber cavity, emitting photons at
1536 nm. The open-access design of the cavity allows for complete tunability
both in space and frequency, selecting individual particles and ions. The ions
are confined in a volume two orders of magnitude smaller than in previous
realizations, increasing the probability of finding ions separated only by a
few nanometers which could then interact. We report the detection of individual
spectral features presenting saturation of the emission count rate and
linewidth, as expected for two-level systems. We also report an uncorrected
$g^{(2)} \left ( 0 \right )$ of 0.24(5) for the emitted field, confirming the
presence of a single emitter. Our fully fiber-integrated system is an important
step towards the realization of the initially envisioned quantum hardware.
|
[{'version': 'v1', 'created': 'Tue, 28 Feb 2023 19:00:04 GMT'}]
|
2023-03-02
|
[array(['Deshmukh', 'Chetan', ''], dtype=object)
array(['Beattie', 'Eduardo', ''], dtype=object)
array(['Casabone', 'Bernardo', ''], dtype=object)
array(['Grandi', 'Samuele', ''], dtype=object)
array(['Serrano', 'Diana', ''], dtype=object)
array(['Ferrier', 'Alban', ''], dtype=object)
array(['Goldner', 'Philippe', ''], dtype=object)
array(['Hunger', 'David', ''], dtype=object)
array(['de Riedmatten', 'Hugues', ''], dtype=object)]
|
1,441 |
1302.1309
|
Maria Harsoula
|
Christos Efthymiopoulos and Mirella Harsoula
|
The speed of Arnold diffusion
|
39 pages, 11 figures
| null |
10.1016/j.physd.2013.01.016
| null |
math-ph math.MP nlin.CD
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A detailed numerical study is presented of the slow diffusion (Arnold
diffusion) taking place around resonance crossings in nearly integrable
Hamiltonian systems of three degrees of freedom in the so-called `Nekhoroshev
regime'. The aim is to construct estimates regarding the speed of diffusion
based on the numerical values of a truncated form of the so-called remainder of
a normalized Hamiltonian function, and to compare them with the outcomes of
direct numerical experiments using ensembles of orbits. In this comparison we
examine, one by one, the main steps of the so-called analytic and geometric
parts of the Nekhoroshev theorem. We are led to two main results: i) We
construct in our concrete example a convenient set of variables, proposed first
by Benettin and Gallavotti (1986), in which the phenomenon of Arnold diffusion
in doubly resonant domains can be clearly visualized. ii) We determine, by
numerical fitting of our data the dependence of the local diffusion coefficient
"D" on the size "||R_{opt}||" of the optimal remainder function, and we compare
this with a heuristic argument based on the assumption of normal diffusion. We
find a power law "D\propto ||R_{opt}||^{2(1+b)}", where the constant "b" has a
small positive value depending also on the multiplicity of the resonance
considered.
|
[{'version': 'v1', 'created': 'Wed, 6 Feb 2013 10:15:07 GMT'}]
|
2015-06-12
|
[array(['Efthymiopoulos', 'Christos', ''], dtype=object)
array(['Harsoula', 'Mirella', ''], dtype=object)]
|
1,442 |
hep-th/0501194
|
Tirthabir Biswas
|
Tirthabir Biswas, Robert Brandenberger, Damien A. Easson, and Anupam
Mazumdar
|
Coupled Inflation and Brane Gases
|
11 pages
|
Phys.Rev. D71 (2005) 083514
|
10.1103/PhysRevD.71.083514
| null |
hep-th astro-ph gr-qc hep-ph
| null |
We study an effective four-dimensional theory with an action with two scalar
fields minimally coupled to gravity, and with a matter action which couples to
the two scalar fields via an overall field-dependent coefficient in the action.
Such a theory could arise from a dimensional reduction of supergravity coupled
to a gas of branes winding the compactified dimensions. We show the existence
of solutions corresponding to power-law inflation. The graceful exit from
inflation can be obtained by postulating the decay of the branes, as would
occur if the branes are unstable in the vacuum and stabilized at high densities
by plasma effects. This construction provides an avenue for connecting string
gas cosmology and the late-time universe.
|
[{'version': 'v1', 'created': 'Mon, 24 Jan 2005 20:17:45 GMT'}
{'version': 'v2', 'created': 'Tue, 8 Feb 2005 16:54:10 GMT'}]
|
2009-11-11
|
[array(['Biswas', 'Tirthabir', ''], dtype=object)
array(['Brandenberger', 'Robert', ''], dtype=object)
array(['Easson', 'Damien A.', ''], dtype=object)
array(['Mazumdar', 'Anupam', ''], dtype=object)]
|
1,443 |
2205.07759
|
Giorgio Di Tizio
|
Giorgio Di Tizio, Michele Armellini, Fabio Massacci
|
Software Updates Strategies: a Quantitative Evaluation against Advanced
Persistent Threats
| null | null |
10.1109/TSE.2022.3176674
| null |
cs.CR
|
http://creativecommons.org/licenses/by/4.0/
|
Software updates reduce the opportunity for exploitation. However, since
updates can also introduce breaking changes, enterprises face the problem of
balancing the need to secure software with updates with the need to support
operations. We propose a methodology to quantitatively investigate the
effectiveness of software updates strategies against attacks of Advanced
Persistent Threats (APTs). We consider strategies where the vendor updates are
the only limiting factors to cases in which enterprises delay updates from 1 to
7 months based on SANS data. Our manually curated dataset of APT attacks covers
86 APTs and 350 campaigns from 2008 to 2020. It includes information about
attack vectors, exploited vulnerabilities (e.g. 0-days vs public
vulnerabilities), and affected software and versions. Contrary to common
belief, most APT campaigns employed publicly known vulnerabilities. If an
enterprise could theoretically update as soon as an update is released, it
would face lower odds of being compromised than those waiting one (4.9x) or
three (9.1x) months. However, if attacked, it could still be compromised from
14% to 33% of the times. As in practice enterprises must do regression testing
before applying an update, our major finding is that one could perform 12% of
all possible updates restricting oneself only to versions fixing publicly known
vulnerabilities without significant changes to the odds of being compromised
compared to a company that updates for all versions.
|
[{'version': 'v1', 'created': 'Mon, 16 May 2022 15:33:36 GMT'}
{'version': 'v2', 'created': 'Wed, 25 May 2022 09:30:38 GMT'}]
|
2022-05-26
|
[array(['Di Tizio', 'Giorgio', ''], dtype=object)
array(['Armellini', 'Michele', ''], dtype=object)
array(['Massacci', 'Fabio', ''], dtype=object)]
|
1,444 |
0704.3930
|
Ferenc Gl\"uck
|
J. Bonn, K. Eitel, F. Gl\"uck, D. Sevilla-Sanchez and N. Titov
|
The KATRIN sensitivity to the neutrino mass and to right-handed currents
in beta decay
|
4 pages, 2 figures, 12 references
|
Phys.Lett.B703:310-312,2011
|
10.1016/j.physletb.2011.08.005
| null |
hep-ph
| null |
The aim of the KArlsruhe TRItium Neutrino experiment KATRIN is the
determination of the absolute neutrino mass scale down to 0.2 eV, with
essentially smaller model dependence than from cosmology and neutrinoless
double beta decay. For this purpose, the integral electron energy spectrum is
measured close to the endpoint of molecular tritium beta decay. The endpoint,
together with the neutrino mass, should be fitted from the KATRIN data as a
free parameter. The right-handed couplings change the electron energy spectrum
close to the endpoint, therefore they have some effect also to the precise
neutrino mass determination. The statistical calculations show that, using the
endpoint as a free parameter, the unaccounted right-handed couplings
constrained by many beta decay experiments can change the fitted neutrino mass
value, relative to the true neutrino mass, by not larger than about 5-10 %.
Using, incorrectly, the endpoint as a fixed input parameter, the above change
of the neutrino mass can be much larger, order of 100 %, and for some cases it
can happen that for large true neutrino mass value the fitted neutrino mass
squared is negative. Publications using fixed endpoint and presenting large
right-handed coupling effects to the neutrino mass determination are not
relevant for the KATRIN experiment.
|
[{'version': 'v1', 'created': 'Mon, 30 Apr 2007 12:53:21 GMT'}]
|
2011-09-07
|
[array(['Bonn', 'J.', ''], dtype=object)
array(['Eitel', 'K.', ''], dtype=object)
array(['Glück', 'F.', ''], dtype=object)
array(['Sevilla-Sanchez', 'D.', ''], dtype=object)
array(['Titov', 'N.', ''], dtype=object)]
|
1,445 |
2203.01056
|
Alberto Amo
|
Albert F. Adiyatullin, Lavi K. Upreti, Corentin Lechevalier, Clement
Evain, Francois Copie, Pierre Suret, Stephane Randoux, Pierre Delplace,
Alberto Amo
|
Topological properties of Floquet winding bands in a photonic lattice
|
Published version. Includes supplementary information
|
Phys. Rev. Lett. 130, 056901 (2023)
|
10.1103/PhysRevLett.130.056901
| null |
physics.optics
|
http://creativecommons.org/licenses/by-sa/4.0/
|
The engineering of synthetic materials characterised by more than one class
of topological invariants is one of the current challenges of solid-state based
and synthetic materials. Using a synthetic photonic lattice implemented in a
two-coupled ring system we engineer an anomalous Floquet metal that is gapless
in the bulk and shows simultaneously two different topological properties. On
the one hand, this synthetic lattice presents bands characterised by a winding
number. The winding emerges from the breakup of inversion symmetry and it
directly relates to the appearance of Bloch suboscillations within its bulk. On
the other hand, the Floquet nature of the lattice results in well-known
anomalous insulating phases with topological edge states. The combination of
broken inversion symmetry and periodic time modulation studied here enrich the
variety of topological phases available in lattices subject to Floquet driving
and suggest the possible emergence of novel phases when periodic modulation is
combined with the breakup of spatial symmetries.
|
[{'version': 'v1', 'created': 'Wed, 2 Mar 2022 12:11:57 GMT'}
{'version': 'v2', 'created': 'Sat, 4 Feb 2023 14:00:10 GMT'}]
|
2023-02-07
|
[array(['Adiyatullin', 'Albert F.', ''], dtype=object)
array(['Upreti', 'Lavi K.', ''], dtype=object)
array(['Lechevalier', 'Corentin', ''], dtype=object)
array(['Evain', 'Clement', ''], dtype=object)
array(['Copie', 'Francois', ''], dtype=object)
array(['Suret', 'Pierre', ''], dtype=object)
array(['Randoux', 'Stephane', ''], dtype=object)
array(['Delplace', 'Pierre', ''], dtype=object)
array(['Amo', 'Alberto', ''], dtype=object)]
|
1,446 |
astro-ph/0302234
|
Catherine Brocksopp
|
A.E.Tarasov (Crimean Astrophysical Observatory, Ukraine), C. Brocksopp
(MSSL, UK), V.M. Lyuty (Sternberg Astronomical Institute, Russia)
|
Variability of the Halpha emission of Cygnus X-1 and its connection with
the soft X-ray radiation
|
Accepted for publication in A&A
|
Astron.Astrophys.402:237-246,2003
|
10.1051/0004-6361:20030148
| null |
astro-ph
| null |
High-resolution Halpha monitoring of Cyg X-1, HD226868 was carried out during
1996-2002 and the resultant spectra analysed in conjunction with 1.5-12 keV
X-ray monitoring. We demonstrate that the Halpha line-profiles have complex
variability on different timescales, controlled in particular by the orbital
period and the focused wind model of mass loss. We find that long-term
variability of the mass loss by the supergiant and short-term variability due
to clumpy structure of the stellar wind dominate during the low/hard X-ray
state and that X-ray photoionization has a relatively small influence on the
line-profile shape and EW variability. During the high/soft X-ray state and
flaring the effect of photoionization the line-profile and EW of Halpha
increases but is still unable to describe the loose anti-correlation between EW
and the low energy X-ray emission. We propose that variability of the mass loss
by the supergiant can change wind velocities in the Stromgren zone around the
accretion disc of the secondary, leading to an increase in accretion rate
through the disc.
|
[{'version': 'v1', 'created': 'Wed, 12 Feb 2003 13:57:39 GMT'}]
|
2011-05-23
|
[array(['Tarasov', 'A. E.', '',
'Crimean Astrophysical Observatory, Ukraine'], dtype=object)
array(['Brocksopp', 'C.', '', 'MSSL, UK'], dtype=object)
array(['Lyuty', 'V. M.', '', 'Sternberg Astronomical Institute, Russia'],
dtype=object) ]
|
1,447 |
astro-ph/0301199
|
Alan H. Guth
|
Alan H. Guth (MIT)
|
Time Since the Beginning
|
13 pages, including 4 figures, LaTeX 2.09, attached style file
AATS2.sty required. Review talk given at "Astrophysical Ages and Time
Scales," Hilo, Hawaii, 5-9 February 2001. The paper has already been
published
|
Astrophysical Ages and Time Scales," Astronomical Society of the
Pacific Conference Series, vol. 245, pp. 3-17 (2001)
| null |
MIT-CTP-3285
|
astro-ph
| null |
While there is no consensus about the history of time since the beginning, in
this paper I will discuss some possibilities. We have a pretty clear picture of
cosmic history from the electroweak phase transition through the time of
recombination, a period which includes the QCD phase transition and big bang
nucleosynthesis. This paper includes a quantitative discussion of the age of
the universe, of the radiation-matter transition, and of hydrogen
recombination. There is much evidence that at earlier times the universe
underwent inflation, but the details of how and when inflation happened are
still far from certain. There is even more uncertainty about what happened
before inflation, and how inflation began. I will describe the possibility of
``eternal'' inflation, which proposes that our universe evolved from an
infinite tree of inflationary spacetime. Most likely, however, inflation can be
eternal only into the future, but still must have a beginning.
|
[{'version': 'v1', 'created': 'Mon, 13 Jan 2003 10:33:37 GMT'}]
|
2007-05-23
|
[array(['Guth', 'Alan H.', '', 'MIT'], dtype=object)]
|
1,448 |
1902.05829
|
Vassilis Pitsikalis
|
Nikolaos Gkanatsios, Vassilis Pitsikalis, Petros Koutras, Athanasia
Zlatintsi, Petros Maragos
|
Deeply Supervised Multimodal Attentional Translation Embeddings for
Visual Relationship Detection
| null | null | null | null |
cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Detecting visual relationships, i.e. <Subject, Predicate, Object> triplets,
is a challenging Scene Understanding task approached in the past via linguistic
priors or spatial information in a single feature branch. We introduce a new
deeply supervised two-branch architecture, the Multimodal Attentional
Translation Embeddings, where the visual features of each branch are driven by
a multimodal attentional mechanism that exploits spatio-linguistic similarities
in a low-dimensional space. We present a variety of experiments comparing
against all related approaches in the literature, as well as by re-implementing
and fine-tuning several of them. Results on the commonly employed VRD dataset
[1] show that the proposed method clearly outperforms all others, while we also
justify our claims both quantitatively and qualitatively.
|
[{'version': 'v1', 'created': 'Fri, 15 Feb 2019 14:53:40 GMT'}]
|
2019-02-18
|
[array(['Gkanatsios', 'Nikolaos', ''], dtype=object)
array(['Pitsikalis', 'Vassilis', ''], dtype=object)
array(['Koutras', 'Petros', ''], dtype=object)
array(['Zlatintsi', 'Athanasia', ''], dtype=object)
array(['Maragos', 'Petros', ''], dtype=object)]
|
1,449 |
1003.0583
|
Miguel Angel Go\~ni
|
M.A. Go\~ni
|
Hyperfine Effects in Ionic Orbital Electron Capture
| null | null | null | null |
nucl-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The K-orbital electron capture in ions with one or two electrons is analized
for a general allowed nuclear transition. For ionic hyperfine states the
angular neutrino distribution and the electron capture rate are given in terms
of nuclear matrix elements. A possible application towards the determination of
neutrino parameters is outlined.
|
[{'version': 'v1', 'created': 'Tue, 2 Mar 2010 13:22:57 GMT'}]
|
2010-03-03
|
[array(['Goñi', 'M. A.', ''], dtype=object)]
|
1,450 |
1006.2395
|
Philip Phillips
|
Frank Kr\"uger, Seungmin Hong, and Philip Phillips
|
Two distinct Mott-Insulator to Bose-glass transitions and breakdown of
self averaging in the disordered Bose-Hubbard model
|
Extended, published version
|
Phys. Rev. B, vol. 84, 115118 (2011)
|
10.1103/PhysRevB.84.115118
| null |
cond-mat.dis-nn
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We investigate the instabilities of the Mott-insulating phase of the weakly
disordered Bose-Hubbard model within a renormalization group analysis of the
replica field theory obtained by a strong-coupling expansion around the atomic
limit. We identify a new order parameter and associated correlation length
scale that is capable of capturing the transition from a state with zero
compressibility, the Mott insulator, to one in which the compressibility is
finite, the Bose glass. The order parameter is the relative variance of the
disorder-induced mass distribution. In the Mott insulator, the relative
variance renormalizes to zero, whereas it diverges in the Bose glass. The
divergence of the relative variance signals the breakdown of self-averaging.
The length scale governing the breakdown of self-averaging is the distance
between rare regions. This length scale is finite in the Bose glass but
diverges at the transition to the Mott insulator with an exponent of $\nu=1/D$
for incommensurate fillings. Likewise, the compressibility vanishes with an
exponent of $\gamma=4/D-1$ at the transition. At commensurate fillings, the
transition is controlled by a different fixed point at which both the disorder
and interaction vertices are relevant.
|
[{'version': 'v1', 'created': 'Fri, 11 Jun 2010 20:15:55 GMT'}
{'version': 'v2', 'created': 'Mon, 19 Sep 2011 16:49:14 GMT'}]
|
2013-05-29
|
[array(['Krüger', 'Frank', ''], dtype=object)
array(['Hong', 'Seungmin', ''], dtype=object)
array(['Phillips', 'Philip', ''], dtype=object)]
|
1,451 |
1804.05351
|
Yucheng Fu
|
Yucheng Fu, Rong Liu, Yang Liu and Jiawei Lu
|
Intertrochanteric Fracture Visualization and Analysis Using a Map
Projection Technique
|
17 pages, 10 figures, this article can be accessed via:
https://rdcu.be/88ud, Med Biol Eng Comput (2018)
| null |
10.1007/s11517-018-1905-1
| null |
q-bio.QM
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Understanding intertrochanteric fracture distribution is an important topic
in orthopaedics due to its high morbidity and mortality. The intertrochanteric
fracture can contain high-dimensional information including complicated 3D
fracture lines, which often make it difficult to visualize or to obtain
valuable statistics for clinical diagnosis and prognosis applications. This
paper proposed a map projection technique to map the high-dimensional
information into a 2D parametric space. This method can preserve the 3D
proximal femur surface and structure while visualizing the entire fracture line
with a single plot/view. Using this method and a standardization technique, a
total of 100 patients with different ages and genders are studied based on the
original radiographs acquired by CT scan. The comparison shows that the
proposed map projection representation is more efficient and rich in
information visualization than the conventional heat map technique. Using the
proposed method, a fracture probability can be obtained at any location in the
2D parametric space, from which the most probable fracture region can be
accurately identified. The study shows that age and gender have significant
influences on intertrochanteric fracture frequency and fracture line
distribution.
|
[{'version': 'v1', 'created': 'Sun, 15 Apr 2018 12:59:44 GMT'}
{'version': 'v2', 'created': 'Sat, 13 Oct 2018 13:25:19 GMT'}]
|
2018-10-16
|
[array(['Fu', 'Yucheng', ''], dtype=object)
array(['Liu', 'Rong', ''], dtype=object)
array(['Liu', 'Yang', ''], dtype=object)
array(['Lu', 'Jiawei', ''], dtype=object)]
|
1,452 |
1309.3102
|
Remy Chicheportiche
|
R\'emy Chicheportiche and Jean-Philippe Bouchaud
|
A nested factor model for non-linear dependences in stock returns
| null | null |
10.1080/14697688.2014.994668
| null |
q-fin.RM q-fin.PM q-fin.ST
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The aim of our work is to propose a natural framework to account for all the
empirically known properties of the multivariate distribution of stock returns.
We define and study a "nested factor model", where the linear factors part is
standard, but where the log-volatility of the linear factors and of the
residuals are themselves endowed with a factor structure and residuals. We
propose a calibration procedure to estimate these log-vol factors and the
residuals. We find that whereas the number of relevant linear factors is
relatively large (10 or more), only two or three log-vol factors emerge in our
analysis of the data. In fact, a minimal model where only one log-vol factor is
considered is already very satisfactory, as it accurately reproduces the
properties of bivariate copulas, in particular the dependence of the
medial-point on the linear correlation coefficient, as reported in
Chicheportiche and Bouchaud (2012). We have tested the ability of the model to
predict Out-of-Sample the risk of non-linear portfolios, and found that it
performs significantly better than other schemes.
|
[{'version': 'v1', 'created': 'Thu, 12 Sep 2013 10:37:21 GMT'}]
|
2015-01-15
|
[array(['Chicheportiche', 'Rémy', ''], dtype=object)
array(['Bouchaud', 'Jean-Philippe', ''], dtype=object)]
|
1,453 |
1008.1159
|
Ignace Jarrige
|
I. Jarrige, Y. Q. Cai, S. R. Shieh, H. Ishii, N. Hiraoka, S. Karna,
and W.-H. Li
|
Charge transfer in FeOCl intercalation compounds and its pressure
dependence: An x-ray spectroscopic study
| null | null |
10.1103/PhysRevB.82.165121
| null |
cond-mat.mtrl-sci
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present a study of charge transfer in Na-intercalated FeOCl and
polyaniline-intercalated FeOCl using high-resolution x-ray absorption
spectroscopy and resonant x-ray emission spectroscopy at the Fe-K edge. By
comparing the experimental data with ab-initio simulations, we are able to
unambiguously distinguish the spectral changes which appear due to
intercalation into those of electronic origin and those of structural origin.
For both systems, we find that about 25% of the Fe sites are reduced to Fe2+
via charge transfer between FeOCl and the intercalate. This is about twice as
large as the Fe2+ fraction reported in studies using Mossbauer spectroscopy.
This discrepancy is ascribed to the fact that the charge transfer occurs on the
same time scale as the Mossbauer effect itself. Our result suggests that every
intercalated atom or molecule is involved in the charge-transfer process, thus
making this process a prerequisite for intercalation. The Fe2+ fraction is
found to increase with pressure for polyaniline-FeOCl, hinting at an
enhancement of the conductivity in the FeOCl intercalation compounds under
pressure.
|
[{'version': 'v1', 'created': 'Fri, 6 Aug 2010 11:02:24 GMT'}
{'version': 'v2', 'created': 'Mon, 9 Aug 2010 00:31:23 GMT'}]
|
2015-05-19
|
[array(['Jarrige', 'I.', ''], dtype=object)
array(['Cai', 'Y. Q.', ''], dtype=object)
array(['Shieh', 'S. R.', ''], dtype=object)
array(['Ishii', 'H.', ''], dtype=object)
array(['Hiraoka', 'N.', ''], dtype=object)
array(['Karna', 'S.', ''], dtype=object)
array(['Li', 'W. -H.', ''], dtype=object)]
|
1,454 |
q-bio/0506026
|
Ulrich Gerland
|
Richard A. Neher and Ulrich Gerland
|
DNA as a programmable viscoelastic nanoelement
|
10 pages, 7 figures; final version to appear in Biophysical Journal
|
Biophysical Journal, 89, 3846-3855 (2005)
|
10.1529/biophysj.105.068866
| null |
q-bio.BM cond-mat.soft
| null |
The two strands of a DNA molecule with a repetitive sequence can pair into
many different basepairing patterns. For perfectly periodic sequences, early
bulk experiments of Poerschke indicate the existence of a sliding process,
permitting the rapid transition between different relative strand positions
[Biophys. Chem. 2 (1974) 83]. Here, we use a detailed theoretical model to
study the basepairing dynamics of periodic and nearly periodic DNA. As
suggested by Poerschke, DNA sliding is mediated by basepairing defects (bulge
loops), which can diffuse along the DNA. Moreover, a shear force f on opposite
ends of the two strands yields a characteristic dynamic response: An outward
average sliding velocity v~1/N is induced in a double strand of length N,
provided f is larger than a threshold f_c. Conversely, if the strands are
initially misaligned, they realign even against an external force less than
f_c. These dynamics effectively result in a viscoelastic behavior of DNA under
shear forces, with properties that are programmable through the choice of the
DNA sequence. We find that a small number of mutations in periodic sequences
does not prevent DNA sliding, but introduces a time delay in the dynamic
response. We clarify the mechanism for the time delay and describe it
quantitatively within a phenomenological model. Based on our findings, we
suggest new dynamical roles for DNA in artificial nanoscale devices. The
basepairing dynamics described here is also relevant for the extension of
repetitive sequences inside genomic DNA.
|
[{'version': 'v1', 'created': 'Fri, 17 Jun 2005 11:59:55 GMT'}
{'version': 'v2', 'created': 'Mon, 19 Sep 2005 13:57:17 GMT'}]
|
2007-05-23
|
[array(['Neher', 'Richard A.', ''], dtype=object)
array(['Gerland', 'Ulrich', ''], dtype=object)]
|
1,455 |
1507.06163
|
Jerome Kasparian
|
Nicolas Berti, Wahb Ettoumi, Sylvain Hermelin, J\'er\^ome Kasparian,
Jean-Pierre Wolf
|
Non-linear Synthesis of Complex Laser Waveforms at Remote Distances
|
17 pages, 6 figures
|
Physical Review A 91, 063833 (2015)
|
10.1103/PhysRevA.91.063833
| null |
physics.optics
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Strong deformation of ultrashort laser pulse shapes is unavoidable when
delivering high intensities at remote distances due to non-linear effects
taking place while propagating. Relying on the reversibility of laser
filamentation, we propose to explicitly design laser pulse shapes so that
propagation serves as a non-linear field synthesizer at a remote target
location. Such an approach allows, for instance, coherent control of molecules
at a remote distance, in the context of standoff detection of pathogens or
explosives.
|
[{'version': 'v1', 'created': 'Wed, 22 Jul 2015 12:48:39 GMT'}]
|
2015-07-23
|
[array(['Berti', 'Nicolas', ''], dtype=object)
array(['Ettoumi', 'Wahb', ''], dtype=object)
array(['Hermelin', 'Sylvain', ''], dtype=object)
array(['Kasparian', 'Jérôme', ''], dtype=object)
array(['Wolf', 'Jean-Pierre', ''], dtype=object)]
|
1,456 |
1507.06525
|
Rachel Howe
|
R. Howe, R.W. Komm, D. Baker, L. Harra, L. van Driel-Gesztelyi, R.S.
Bogart
|
Persistent Near-Surface Flow Structures from Local Helioseismology
| null | null |
10.1007/s11207-015-0747-3
| null |
astro-ph.SR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Near-surface flows measured by the ring-diagram technique of local
helioseismology show structures that persist over multiple rotations. We
examine these phenomena using data from the {\em Global Oscillation Network
Group} (GONG) and the {\em Helioseismic and Magnetic Imager} (HMI) and show
that a correlation analysis of the structures can be used to estimate the
rotation rate as a function of latitude, giving a result consistent with the
near-surface rate from global helioseismology and slightly slower than that
obtained from a similar analysis of the surface magnetic field strength. At
latitudes of 60$^{\circ}$ and above the HMI flow data reveal a strong signature
of a two-sided zonal flow structure. This signature may be related to recent
reports of "giant cells" in solar convection.
|
[{'version': 'v1', 'created': 'Thu, 23 Jul 2015 15:15:03 GMT'}]
|
2015-08-19
|
[array(['Howe', 'R.', ''], dtype=object)
array(['Komm', 'R. W.', ''], dtype=object)
array(['Baker', 'D.', ''], dtype=object)
array(['Harra', 'L.', ''], dtype=object)
array(['van Driel-Gesztelyi', 'L.', ''], dtype=object)
array(['Bogart', 'R. S.', ''], dtype=object)]
|
1,457 |
2002.10885
|
Uicheol Jang
|
Uicheol Jang and Yu Yi and Hongsu Kim
|
Thick accretion disk and Its super Eddington luminosity around spinning
blackholes
| null | null |
10.5140/JASS.2021.38.1.39
| null |
astro-ph.HE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In the general accretion disk model theory, the accretion disk surrounding an
astronomical object comprises fluid rings obeying Keplerian motion. However, we
should consider relativistic and rotational effects as we close in toward the
center of accretion disk surrounding spinning compact massive objects such as a
black hole or a neutron star. In this study, we explore the geometry of the
inner portion of the accretion disk in the context of Mukhopadhyay's pseudo
Newtonian potential approximation for the full general relativity theory. We
found that the shape of the accretion disk "puffs up" or becomes thicker and
the luminosity of the disk could exceed the Eddington luminosity near the
surface of the compact spinning black hole.
|
[{'version': 'v1', 'created': 'Mon, 24 Feb 2020 06:37:05 GMT'}
{'version': 'v2', 'created': 'Fri, 19 Mar 2021 07:31:20 GMT'}]
|
2021-05-12
|
[array(['Jang', 'Uicheol', ''], dtype=object)
array(['Yi', 'Yu', ''], dtype=object)
array(['Kim', 'Hongsu', ''], dtype=object)]
|
1,458 |
1506.05940
|
Agn\`es Fert\'e
|
A. Ferte
|
Statistics of the CMB polarised anisotropies
|
214 pages, PhD thesis, can be found at :
http://www.theses.fr/2014PA112223
| null | null | null |
astro-ph.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This PhD thesis (defended in 2014) is focused on the estimation of the CMB
polarised anisotropies power spectra on a masked sky and on forecasts of
constraints set on the primordial universe physics thanks to these
anisotropies. After an introduction on the light polarisation, the standard
model of cosmology and the CMB properties, I show the results obtained on the
use and efficiency of pseudospectrum methods to correct for the so-called
E-to-B leakage. Afterwards, I present the forecasts obtained on the detection
of the tensor-to-scalar ratio r and on the detection of chiral gravity, using
the pure pseudospectrum method. The study of forecasts of a primordial magnetic
field detection using the CMB polarised anisotropies is finally briefly
tackled.
|
[{'version': 'v1', 'created': 'Fri, 19 Jun 2015 10:08:16 GMT'}]
|
2015-06-22
|
[array(['Ferte', 'A.', ''], dtype=object)]
|
1,459 |
1404.7345
|
Carmel Rotschild
|
Assaf Manor, Leopoldo L. Martin and Carmel Rotschild
|
Optical Refrigeration for Ultra-Efficient Photovoltaics
|
12 pages
| null |
10.1117/12.2076275
| null |
physics.optics
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Improving the conversion efficiency of solar energy to electricity is most
important to mankind. For single-junction photovoltaic solar-cells, the
Shockley-Queisser thermodynamic efficiency limit is extensively due to the heat
dissipation, inherently accompanying the quantum process of electro-chemical
potential generation. Concepts such as solar thermo-photovoltaics and
thermo-photonics, have been suggested to harness this wasted heat, yet
efficiencies exceeding the Shockley-Queisser limit have not been demonstrated
due to the challenge of operating at high temperatures. Here, we present a
highly efficient converter based on endothermic photoluminescence, which
operates at relative low temperatures. The thermally induced blue-shifted
photoluminescence of a low-bandgap absorber is coupled to a high-bandgap
photovoltaic cell. The high absorber's photo-current and the high cell's
voltage results in 69% maximal theoretical conversion efficiencies. We
experimentally demonstrate tenfold thermal-enhancement of useful radiation for
the high-bandgap cell and 107% enhancement in average photon energy. This paves
the way for introducing disruptive-innovation in photovoltaics.
|
[{'version': 'v1', 'created': 'Tue, 29 Apr 2014 13:09:40 GMT'}]
|
2015-06-11
|
[array(['Manor', 'Assaf', ''], dtype=object)
array(['Martin', 'Leopoldo L.', ''], dtype=object)
array(['Rotschild', 'Carmel', ''], dtype=object)]
|
1,460 |
2012.13480
|
Zhenhua Wang
|
Shuzhou Wang and Zhenhua Wang
|
Relative operator entropies and Tsallis relative operator entropies in
JB-algebras
|
16 pages. arXiv admin note: text overlap with arXiv:2012.13127
| null | null | null |
math.FA math-ph math.MP quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We initiate the study of relative operator entropies and Tsallis relative
operator entropies in the setting of JB-algebras. We establish their basic
properties and extend the operator inequalities on relative operator entropies
and Tsallis relative operator entropies to this setting. In addition, we
improve the lower and upper bounds of the relative operator $(\alpha,
\beta)$-entropy in the setting of JB-algebras that were established in Hilbert
space operators setting by Nikoufar [18, 20]. Though we employ the same
notation as in the classical setting of Hilbert space operators, the
inequalities in the setting of JB-algebras have different connotations and
their proofs requires techniques in JB-algebras.
|
[{'version': 'v1', 'created': 'Fri, 25 Dec 2020 01:46:53 GMT'}
{'version': 'v2', 'created': 'Thu, 29 Jul 2021 18:31:39 GMT'}]
|
2021-08-02
|
[array(['Wang', 'Shuzhou', ''], dtype=object)
array(['Wang', 'Zhenhua', ''], dtype=object)]
|
1,461 |
2012.08570
|
Astrid Eichhorn
|
Johanna N. Borissova and Astrid Eichhorn
|
Towards black-hole singularity-resolution in the Lorentzian
gravitational path integral
|
18 pages plus references, 4 figures
| null | null | null |
gr-qc
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Quantum Gravity is expected to resolve the singularities of classical General
Relativity. Based on destructive interference of singular
spacetime-configurations in the path integral, we find that higher-order
curvature terms may allow to resolve black-hole singularities both in the
spherically symmetric and axisymmetric case. In contrast, the Einstein action
does not provide a dynamical mechanism for singularity-resolution through
destructive interference of these configurations.
|
[{'version': 'v1', 'created': 'Tue, 15 Dec 2020 19:30:55 GMT'}]
|
2020-12-17
|
[array(['Borissova', 'Johanna N.', ''], dtype=object)
array(['Eichhorn', 'Astrid', ''], dtype=object)]
|
1,462 |
1108.1767
|
Ana Carolina Bruno Machado Miss
|
A. C. B. Machado, J. C. Montero and V. Pleitez
|
On fermion masses and mixing in a model with $A_4$ symmetry
|
Version accepted for publication in International Journal of Modern
Physics A. In this version we added a discussion on the charged lepton and
neutrino masses. The title has been changed. Other minor changes do not
modify the conclusions
| null |
10.1142/S0217751X12500686
| null |
hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In a recently proposed multi-Higgs extension of the standard model in which
discrete symmetries, $A_4$ and $Z_3$ are imposed we show that, after
accommodating the fermion masses and the mixing matrices in the charged
currents, the mixing matrices in the neutral currents induced by neutral
scalars are numerically obtained. However, the flavor changing neutral currents
are under control mainly by mixing and/or mass suppressions in the neutral
scalar sector.
|
[{'version': 'v1', 'created': 'Mon, 8 Aug 2011 18:04:18 GMT'}
{'version': 'v2', 'created': 'Tue, 24 Apr 2012 19:04:02 GMT'}]
|
2012-04-25
|
[array(['Machado', 'A. C. B.', ''], dtype=object)
array(['Montero', 'J. C.', ''], dtype=object)
array(['Pleitez', 'V.', ''], dtype=object)]
|
1,463 |
2009.11392
|
Yuji Nakatsukasa
|
Yuji Nakatsukasa
|
Fast and stable randomized low-rank matrix approximation
| null | null | null | null |
math.NA cs.NA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Randomized SVD has become an extremely successful approach for efficiently
computing a low-rank approximation of matrices. In particular the paper by
Halko, Martinsson, and Tropp (SIREV 2011) contains extensive analysis, and has
made it a very popular method. The typical complexity for a rank-$r$
approximation of $m\times n$ matrices is $O(mn\log n+(m+n)r^2)$ for dense
matrices. The classical Nystr{\"o}m method is much faster, but applicable only
to positive semidefinite matrices. This work studies a generalization of
Nystr{\"o}m method applicable to general matrices, and shows that (i) it has
near-optimal approximation quality comparable to competing methods, (ii) the
computational cost is the near-optimal $O(mn\log n+r^3)$ for dense matrices,
with small hidden constants, and (iii) crucially, it can be implemented in a
numerically stable fashion despite the presence of an ill-conditioned
pseudoinverse. Numerical experiments illustrate that generalized Nystr{\"o}m
can significantly outperform state-of-the-art methods, especially when $r\gg
1$, achieving up to a 10-fold speedup. The method is also well suited to
updating and downdating the matrix.
|
[{'version': 'v1', 'created': 'Wed, 23 Sep 2020 21:40:36 GMT'}]
|
2020-09-25
|
[array(['Nakatsukasa', 'Yuji', ''], dtype=object)]
|
1,464 |
hep-ph/0003234
|
Dalibor Kekez
|
D. Kekez, D. Klabucar and M. D. Scadron
|
Revisiting the U_A(1) problems
|
revtex, one eps figure, 25 pages, discussion on two mixing angles
scheme included, references added, version to appear in J. Phys. G
|
J.Phys.G26:1335-1354,2000
|
10.1088/0954-3899/26/9/305
|
ZTF-00/03
|
hep-ph nucl-th
| null |
We survey various U_A(1) problems and attempt to resolve the two puzzles
related to the eta mesons that have experimental verification. Specifically, we
first explore the Goldstone structure of the eta and eta' mesons in the context
of eta-eta' mixing using ideas based on QCD. Then we study the eta decays
eta->3pi0, eta'->3pi0 and eta'->eta pi pi. Finally we arrive at essentially the
same picture in the dynamical scheme based on consistently coupled
Schwinger-Dyson and Bethe-Salpeter integral equations. This chirally
well-behaved bound-state approach clarifies the distinction between the usual
axial-current decay constants and the gamma gamma decay constants in the
eta-eta' complex. Allowing for the effects of the SU(3) flavor symmetry
breaking in the quark-antiquark annihilation, leads to the improved eta-eta'
mass matrix.
|
[{'version': 'v1', 'created': 'Thu, 23 Mar 2000 16:02:45 GMT'}
{'version': 'v2', 'created': 'Wed, 21 Jun 2000 12:47:46 GMT'}]
|
2008-11-26
|
[array(['Kekez', 'D.', ''], dtype=object)
array(['Klabucar', 'D.', ''], dtype=object)
array(['Scadron', 'M. D.', ''], dtype=object)]
|
1,465 |
2009.02418
|
Tom Grimes
|
Tom Grimes, Eric Church, William Pitts, Lynn Wood
|
Explanation of Unintended Radiated Emission Classification via LIME
|
7 pages, 11 Figures
| null | null | null |
cs.CV cs.LG eess.SP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Unintended radiated emissions arise during the use of electronic devices.
Identifying and mitigating the effects of these emissions is a key element of
modern power engineering and associated control systems. Signal processing of
the electrical system can identify the sources of these emissions. A dataset
known as Flaming Moes includes captured unintended radiated emissions from
consumer electronics. This dataset was analyzed to construct next-generation
methods for device identification. To this end, a neural network based on
applying the ResNet-18 image classification architecture to the short time
Fourier transforms of short segments of voltage signatures was constructed.
Using this classifier, the 18 device classes and background class were
identified with close to 100 percent accuracy. By applying LIME to this
classifier and aggregating the results over many classifications for the same
device, it was possible to determine the frequency bands used by the classifier
to make decisions. Using ensembles of classifiers trained on very similar
datasets from the same parent data distribution, it was possible to recover
robust sets of features of device output useful for identification. The
additional understanding provided by the application of LIME enhances the
trainability, trustability, and transferability of URE analysis networks.
|
[{'version': 'v1', 'created': 'Fri, 4 Sep 2020 23:14:50 GMT'}
{'version': 'v2', 'created': 'Tue, 8 Sep 2020 16:37:29 GMT'}]
|
2020-09-09
|
[array(['Grimes', 'Tom', ''], dtype=object)
array(['Church', 'Eric', ''], dtype=object)
array(['Pitts', 'William', ''], dtype=object)
array(['Wood', 'Lynn', ''], dtype=object)]
|
1,466 |
1309.7757
|
Carlo Orrieri
|
Carlo Orrieri
|
A stochastic maximum principle with dissipativity conditions
| null |
Discrete Contin. Dyn. Syst (A), 35 (2015) 5499-5519
| null | null |
math.OC math.PR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper we prove a version of the maximum principle, in the sense of
Pontryagin, for the optimal control of a finite dimensional stochastic
differential equation, driven by a multidimensional Wiener process. We drop the
usual Lipschitz assumption on the drift term and substitute it with
dissipativity conditions, allowing polynomial growth. The control enter both
the drift and the diffusion term and takes values in a general metric space.
|
[{'version': 'v1', 'created': 'Mon, 30 Sep 2013 08:52:37 GMT'}]
|
2017-03-14
|
[array(['Orrieri', 'Carlo', ''], dtype=object)]
|
1,467 |
1510.00283
|
Jean-Sebastien Gagnon
|
Jean-Sebastien Gagnon, David Hochberg, Juan Perez-Mercader
|
Small-scale properties of a stochastic cubic-autocatalytic
reaction-diffusion model
|
14 pages, 12 figures
|
Phys.Rev.E92:042114,2015
|
10.1103/PhysRevE.92.042114
| null |
cond-mat.stat-mech nlin.PS
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We investigate the small-scale properties of a stochastic cubic-autocatalytic
reaction-diffusion (CARD) model using renormalization techniques. We
renormalize noise-induced ultraviolet divergences and obtain beta functions for
the decay rate and coupling at one-loop. Assuming colored (power law) noise,
our results show that the behavior of both decay rate and coupling with scale
depends crucially on the noise exponent. Interpreting the CARD model as a proxy
for a (very simple) living system, our results suggest that power law
correlations in environmental fluctuations can both decrease or increase the
growth of structures at smaller scales.
|
[{'version': 'v1', 'created': 'Thu, 1 Oct 2015 15:27:31 GMT'}]
|
2015-10-16
|
[array(['Gagnon', 'Jean-Sebastien', ''], dtype=object)
array(['Hochberg', 'David', ''], dtype=object)
array(['Perez-Mercader', 'Juan', ''], dtype=object)]
|
1,468 |
1702.07822
|
Arthur Yang
|
Yi Wang, Arthur L.B. Yang
|
Total positivity of Narayana matrices
|
10 pages
| null | null | null |
math.CO math.CA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We prove the total positivity of the Narayana triangles of type $A$ and type
$B$, and thus affirmatively confirm a conjecture of Chen, Liang and Wang and a
conjecture of Pan and Zeng. We also prove the strict total positivity of the
Narayana squares of type $A$ and type $B$.
|
[{'version': 'v1', 'created': 'Sat, 25 Feb 2017 02:46:57 GMT'}]
|
2017-02-28
|
[array(['Wang', 'Yi', ''], dtype=object)
array(['Yang', 'Arthur L. B.', ''], dtype=object)]
|
1,469 |
1502.07171
|
Todor M. Mishonov
|
Todor M. Mishonov
|
Comment on "Interface tension of Bose-Einstein condensates" by Bert Van
Schaeybroeck, Phys. Rev. A 78, 023624-9 (2008)
|
1 page, no figures, corrected version
| null | null | null |
cond-mat.quant-gas cond-mat.supr-con
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The purpose of the comment is to point out that the leading term of the
Ginzburg-Landau nonanalytical correction to the interface tension of
Bose-Einstein condensates with strong segregation and the surface tension of
extreme type-I superconductors are described by a common coefficient derived
from the universal equation for the phase boundary. The agreement between the
numerical value of the coefficients gives a hint that this can be an exact
result which deserves to be checked. The outcome will be of interest for
physicists working in both fields.
|
[{'version': 'v1', 'created': 'Wed, 25 Feb 2015 14:13:23 GMT'}
{'version': 'v2', 'created': 'Sat, 11 Apr 2015 19:23:32 GMT'}]
|
2015-06-01
|
[array(['Mishonov', 'Todor M.', ''], dtype=object)]
|
1,470 |
2205.03780
|
Somdatta Goswami
|
Somdatta Goswami, David S. Li, Bruno V. Rego, Marcos Latorre, Jay D.
Humphrey, George Em Karniadakis
|
Neural operator learning of heterogeneous mechanobiological insults
contributing to aortic aneurysms
|
37 Pages, 16 Figures
| null | null | null |
cs.LG q-bio.TO
|
http://creativecommons.org/licenses/by/4.0/
|
Thoracic aortic aneurysm (TAA) is a localized dilatation of the aorta
resulting from compromised wall composition, structure, and function, which can
lead to life-threatening dissection or rupture. Several genetic mutations and
predisposing factors that contribute to TAA have been studied in mouse models
to characterize specific changes in aortic microstructure and material
properties that result from a wide range of mechanobiological insults.
Assessments of TAA progression in vivo is largely limited to measurements of
aneurysm size and growth rate. It has been shown that aortic geometry alone is
not sufficient to predict the patient-specific progression of TAA but
computational modeling of the evolving biomechanics of the aorta could predict
future geometry and properties from initiating insults. In this work, we
present an integrated framework to train a deep operator network
(DeepONet)-based surrogate model to identify contributing factors for TAA by
using FE-based datasets of aortic growth and remodeling resulting from
prescribed insults. For training data, we investigate multiple types of TAA
risk factors and spatial distributions within a constrained mixture model to
generate axial--azimuthal maps of aortic dilatation and distensibility. The
trained network is then capable of predicting the initial distribution and
extent of the insult from a given set of dilatation and distensibility
information. Two DeepONet frameworks are proposed, one trained on sparse
information and one on full-field grayscale images, to gain insight into a
preferred neural operator-based approach. Performance of the surrogate models
is evaluated through multiple simulations carried out on insult distributions
varying from fusiform to complex. We show that the proposed approach can
predict patient-specific mechanobiological insult profile with a high accuracy,
particularly when based on full-field images.
|
[{'version': 'v1', 'created': 'Sun, 8 May 2022 04:37:49 GMT'}]
|
2022-05-11
|
[array(['Goswami', 'Somdatta', ''], dtype=object)
array(['Li', 'David S.', ''], dtype=object)
array(['Rego', 'Bruno V.', ''], dtype=object)
array(['Latorre', 'Marcos', ''], dtype=object)
array(['Humphrey', 'Jay D.', ''], dtype=object)
array(['Karniadakis', 'George Em', ''], dtype=object)]
|
1,471 |
0804.4418
|
Andrzej Wereszczynski
|
C. Adam, J. Sanchez-Guillen, A. Wereszczynski
|
Infinitely many conservation laws in self-dual Yang--Mills theory
|
12 pages, extensively revised version. One section on previous
results and some references added
|
JHEP0809:014,2008
|
10.1088/1126-6708/2008/09/014
| null |
hep-th math-ph math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Using a nonlocal field transformation for the gauge field known as
Cho--Faddeev--Niemi--Shabanov decomposition as well as ideas taken from
generalized integrability, we derive a new family of infinitely many conserved
currents in the self-dual sector of SU(2) Yang-Mills theory. These currents may
be related to the area preserving diffeomorphisms on the reduced target space.
The calculations are performed in a completely covariant manner and, therefore,
can be applied to the self-dual equations in any space-time dimension with
arbitrary signature.
|
[{'version': 'v1', 'created': 'Mon, 28 Apr 2008 14:22:27 GMT'}
{'version': 'v2', 'created': 'Wed, 9 Jul 2008 15:52:46 GMT'}]
|
2008-11-26
|
[array(['Adam', 'C.', ''], dtype=object)
array(['Sanchez-Guillen', 'J.', ''], dtype=object)
array(['Wereszczynski', 'A.', ''], dtype=object)]
|
1,472 |
1703.03793
|
Vincenzo Galdi
|
Massimo Moccia, Giuseppe Castaldi, Giuliana D'Alterio, Maurizio Feo,
Roberto Vitiello, Vincenzo Galdi
|
Transformation-Optics-Based Design of a Metamaterial Radome for
Extending the Scanning Angle of a Phased Array Antenna
|
9 pages, 10 figures; minor revisions
| null | null | null |
physics.class-ph cond-mat.mtrl-sci
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We apply the transformation-optics approach to the design of a metamaterial
radome that can extend the scanning angle of a phased-array antenna. For
moderate enhancement of the scanning angle, via suitable parameterization and
optimization of the coordinate transformation, we obtain a design that admits a
technologically viable, robust and potentially broadband implementation in
terms of thin-metallic-plate inclusions. Our results, validated via
finite-element-based numerical simulations, indicate an alternative route to
the design of metamaterial radomes which does not require negative-valued
and/or extreme constitutive parameters.
|
[{'version': 'v1', 'created': 'Thu, 9 Mar 2017 14:37:19 GMT'}
{'version': 'v2', 'created': 'Tue, 2 May 2017 19:48:41 GMT'}]
|
2017-05-04
|
[array(['Moccia', 'Massimo', ''], dtype=object)
array(['Castaldi', 'Giuseppe', ''], dtype=object)
array(["D'Alterio", 'Giuliana', ''], dtype=object)
array(['Feo', 'Maurizio', ''], dtype=object)
array(['Vitiello', 'Roberto', ''], dtype=object)
array(['Galdi', 'Vincenzo', ''], dtype=object)]
|
1,473 |
1501.04526
|
Daniel Loughran
|
Ariyan Javanpeykar, Daniel Loughran
|
Good reduction of algebraic groups and flag varieties
|
11 pages
| null | null | null |
math.NT math.AG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In 1983, Faltings proved that there are only finitely many abelian varieties
over a number field of fixed dimension and with good reduction outside a given
set of places. In this paper, we consider the analogous problem for other
algebraic groups and their homogeneous spaces, such as flag varieties.
|
[{'version': 'v1', 'created': 'Mon, 19 Jan 2015 15:42:08 GMT'}]
|
2015-01-20
|
[array(['Javanpeykar', 'Ariyan', ''], dtype=object)
array(['Loughran', 'Daniel', ''], dtype=object)]
|
1,474 |
nucl-th/0203056
|
Khan
|
E. Khan, N. Sandulescu, M. Grasso, Nguyen Van Giai
|
Continuum quasiparticle random phase approximation and the time
dependent Hartree-Fock-Bogoliubov approach
|
17 pages, 7 figures. Revised version with comments and references
added
|
Phys.Rev.C66:024309,2002
|
10.1103/PhysRevC.66.024309
| null |
nucl-th
| null |
Quadrupole excitations of neutron-rich nuclei are analyzed by using the
linear response method in the Quasiparticle Random Phase Approximation (QRPA).
The QRPA response is derived starting from the time-dependent
Hartree-Fock-Bogoliubov (HFB) equations. The residual interaction between the
quasiparticles is determined consistently from the two-body force used in the
HFB equations, and the continuum coupling is treated exactly.
Calculations are done for the neutron-rich oxygen isotopes. It is found that
pairing correlations affect the low-lying states, and that a full treatment of
the continuum can change the structure of the states in the giant resonance
region.
|
[{'version': 'v1', 'created': 'Thu, 21 Mar 2002 16:23:10 GMT'}
{'version': 'v2', 'created': 'Fri, 7 Jun 2002 14:33:20 GMT'}]
|
2016-09-08
|
[array(['Khan', 'E.', ''], dtype=object)
array(['Sandulescu', 'N.', ''], dtype=object)
array(['Grasso', 'M.', ''], dtype=object)
array(['Van Giai', 'Nguyen', ''], dtype=object)]
|
1,475 |
cond-mat/9611009
|
Lucas du Croo de Jongh
|
M.S.L. du Croo de Jongh, P.J.H. Denteneer
|
Spin stiffness in the frustrated Heisenberg antiferromagnet
|
12 pages, 2 figures included. Accepted as brief report in Phys. Rev.
B
| null | null | null |
cond-mat.stat-mech
| null |
We calculate the spin stiffness of the S=1/2 frustrated Heisenberg
antiferromagnet directly from a general formula which is evaluated in the
Schwinger boson mean-field approximation. Both N\'eel and collinear ordering
are considered. For collinear ordering, we take the anisotropy of this phase
into account, unlike previous approaches. For N\'eel ordering, a detailed study
is made of the finite-size scaling behavior of the two terms that make up the
spin stiffness. The exponents of the scaling with the system size of the two
terms comprising the spin stiffness turn out to be identical to those of the
unfrustrated case.
|
[{'version': 'v1', 'created': 'Fri, 1 Nov 1996 16:16:41 GMT'}]
|
2016-08-31
|
[array(['de Jongh', 'M. S. L. du Croo', ''], dtype=object)
array(['Denteneer', 'P. J. H.', ''], dtype=object)]
|
1,476 |
1502.03187
|
Zsofia Nagy
|
Z. Nagy, F. F. S. van der Tak, G. A. Fuller, R. Plume
|
Physical and chemical differentiation of the luminous star-forming
region W49A - Results from the JCMT Spectral Legacy Survey
|
Proposed for acceptance in A&A, abstract abridged
|
A&A 577, A127 (2015)
|
10.1051/0004-6361/201425014
| null |
astro-ph.GA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The massive and luminous star-forming region W49A is a well known Galactic
candidate to probe the physical conditions and chemistry similar to those
expected in external starburst galaxies. We aim to probe the physical and
chemical structure of W49A on a spatial scale of ~0.8 pc based on the JCMT
Spectral Legacy Survey, which covers the frequency range between 330 and 373
GHz. The wide 2x2 arcminutes field and the high spectral resolution of the HARP
instrument on JCMT provides information on the spatial structure and kinematics
of the cloud. For species where multiple transitions are available, we estimate
excitation temperatures and column densities. We detected 255 transitions
corresponding to 60 species in the 330-373 GHz range at the center position of
W49A. Excitation conditions can be probed for 16 molecules. The chemical
composition suggests the importance of shock-, PDR-, and hot core chemistry.
Many molecular lines show a significant spatial extent across the maps
including high density tracers (e.g. HCN, HNC, CS, HCO+) and tracers of
UV-irradiation (e.g. CN and C2H). Large variations are seen between the
sub-regions with mostly blue-shifted emission toward the Eastern tail, mostly
red-shifted emission toward the Northern clump, and emission peaking around the
expected source velocity toward the South-west clump. A comparison of column
density ratios of characteristic species observed toward W49A to Galactic PDRs
suggests that while the chemistry toward the W49A center is driven by a
combination of UV-irradiation and shocks, UV-irradiation dominates for the
Northern Clump, Eastern tail, and South-west clump regions. A comparison to a
starburst galaxy and an AGN suggests similar C2H, CN, and H2CO abundances (with
respect to the dense gas tracer 34CS) between the ~0.8 pc scale probed for W49A
and the >1 kpc regions in external galaxies with global star-formation.
|
[{'version': 'v1', 'created': 'Wed, 11 Feb 2015 03:23:19 GMT'}]
|
2015-05-20
|
[array(['Nagy', 'Z.', ''], dtype=object)
array(['van der Tak', 'F. F. S.', ''], dtype=object)
array(['Fuller', 'G. A.', ''], dtype=object)
array(['Plume', 'R.', ''], dtype=object)]
|
1,477 |
hep-th/9808016
|
Michael Douglas
|
Tom Banks, Michael R. Douglas, Gary T. Horowitz and Emil Martinec
|
AdS Dynamics from Conformal Field Theory
|
harvmac, 26 pp
| null | null |
NSF-ITP-98-082, EFI-98-30, RU-98-xx
|
hep-th
| null |
We explore the extent to which a local string theory dynamics in anti-de
Sitter space can be determined from its proposed Conformal Field Theory (CFT)
description. Free fields in the bulk are constructed from the CFT operators,
but difficulties are encountered when one attempts to incorporate interactions.
We also discuss general features of black hole dynamics as seen from the CFT
perspective. In particular, we argue that the singularity of AdS_3 black holes
is resolved in the CFT description.
|
[{'version': 'v1', 'created': 'Tue, 4 Aug 1998 21:49:51 GMT'}]
|
2007-05-23
|
[array(['Banks', 'Tom', ''], dtype=object)
array(['Douglas', 'Michael R.', ''], dtype=object)
array(['Horowitz', 'Gary T.', ''], dtype=object)
array(['Martinec', 'Emil', ''], dtype=object)]
|
1,478 |
2303.10970
|
Ivan Hejn\'y
|
Ivan Hejn\'y, Jonas Wallin, Ma{\l}gorzata Bogdan
|
Weak pattern convergence for SLOPE and its robust versions
|
30 pages
| null | null | null |
math.ST stat.TH
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The Sorted L-One Estimator (SLOPE) is a popular regularization method in
regression, which induces clustering of the estimated coefficients. That is,
the estimator can have coefficients of identical magnitude. In this paper, we
derive an asymptotic distribution of SLOPE for the ordinary least squares,
Huber, and Quantile loss functions, and use it to study the clustering behavior
in the limit. This requires a stronger type of convergence since clustering
properties do not follow merely from the classical weak convergence. For this
aim, we utilize the Hausdorff distance, which provides a suitable notion of
convergence for the penalty subdifferentials and a bridge toward weak
convergence of the clustering pattern. We establish asymptotic control of the
false discovery rate for the asymptotic orthogonal design of the regressor. We
also show how to extend the framework to a broader class of regularizers other
than SLOPE.
|
[{'version': 'v1', 'created': 'Mon, 20 Mar 2023 09:46:05 GMT'}
{'version': 'v2', 'created': 'Wed, 22 Mar 2023 12:39:04 GMT'}
{'version': 'v3', 'created': 'Fri, 14 Apr 2023 16:12:19 GMT'}]
|
2023-04-17
|
[array(['Hejný', 'Ivan', ''], dtype=object)
array(['Wallin', 'Jonas', ''], dtype=object)
array(['Bogdan', 'Małgorzata', ''], dtype=object)]
|
1,479 |
1804.05481
|
Matthias Fripp
|
Josiah Johnston, Rodrigo Henr\'iquez, Benjam\'in Maluenda and Matthias
Fripp
|
Switch 2.0: A Modern Platform for Planning High-Renewable Power Systems
| null |
"Switch 2.0: A modern platform for planning high-renewable power
systems", SoftwareX 10:10051, 2019
|
10.1016/j.softx.2019.100251
| null |
math.OC physics.soc-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This paper describes Switch 2.0, an open-source modeling platform for
planning transitions to low-emission electric power grids, designed to satisfy
21st century grid planning requirements. Switch is capable of long-, medium-
and short-term planning of investments and operations with conventional or
smart grids, integrating large shares of renewable power, storage and/or demand
response. Applications include integrated resource planning, investment
planning, economic and policy analyses as well as basic research. Potential
users include researchers, educators, industry and regulators. Switch
formulates generation and transmission capacity planning as a mixed integer
linear program where investment and operation are co-optimized across sampled
time series during multiple investment periods. High-resolution production cost
modeling is supported by freezing investment decisions and including longer
time series and more operational details. Modeling features include unit
commitment, part-load efficiency, planning and operating reserves, fuel supply
curves, storage, hydroelectric networks, policy constraints and demand
response. Switch has a modular architecture that allows users to flexibly
compose models by choosing built-in modules 'a la carte' or writing custom
modules. This paper describes the software architecture and model formulation
of Switch 2.0 and provides a case study in which the model was used to identify
the best options for obtaining load-shifting and reserve services from
batteries and demand response in a 100% renewable power system.
|
[{'version': 'v1', 'created': 'Mon, 16 Apr 2018 02:29:14 GMT'}
{'version': 'v2', 'created': 'Thu, 2 Aug 2018 00:37:17 GMT'}
{'version': 'v3', 'created': 'Wed, 17 Oct 2018 23:17:14 GMT'}]
|
2019-06-24
|
[array(['Johnston', 'Josiah', ''], dtype=object)
array(['Henríquez', 'Rodrigo', ''], dtype=object)
array(['Maluenda', 'Benjamín', ''], dtype=object)
array(['Fripp', 'Matthias', ''], dtype=object)]
|
1,480 |
2204.02155
|
Siddharth Sadhwani
|
Siddharth Sadhwani, Nishant Grover, Md Akhtar, Tanmoy Chakraborty
|
Detecting Anchors' Opinion in Hinghlish News Delivery
| null | null | null | null |
cs.CL
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Humans like to express their opinions and crave the opinions of others.
Mining and detecting opinions from various sources are beneficial to
individuals, organisations, and even governments. One such organisation is news
media, where a general norm is not to showcase opinions from their side.
Anchors are the face of the digital media, and it is required for them not to
be opinionated. However, at times, they diverge from the accepted norm and
insert their opinions into otherwise straightforward news reports, either
purposefully or unintentionally. This is primarily seen in debates as it
requires the anchors to be spontaneous, thus making them vulnerable to add
their opinions. The consequence of such mishappening might lead to biased news
or even supporting a certain agenda at the worst. To this end, we propose a
novel task of anchors' opinion detection in debates. We curate code-mixed news
debates and develop the ODIN dataset. A total of 2054 anchors' utterances in
the dataset are marked as opinionated or non-opinionated. Lastly, we propose
DetONADe, an interactive attention-based framework for classifying anchors'
utterances and obtain the best weighted-F1 score of 0.703. A thorough analysis
and evaluation show many interesting patterns in the dataset and predictions.
|
[{'version': 'v1', 'created': 'Tue, 5 Apr 2022 12:26:46 GMT'}]
|
2022-04-06
|
[array(['Sadhwani', 'Siddharth', ''], dtype=object)
array(['Grover', 'Nishant', ''], dtype=object)
array(['Akhtar', 'Md', ''], dtype=object)
array(['Chakraborty', 'Tanmoy', ''], dtype=object)]
|
1,481 |
nucl-th/9307026
| null |
J.Resag, C.R.M\"unz, B.C.Metsch, H.R.Petry
|
Analysis of the instantaneous Bethe-Salpeter equation for
\(q\bar{q}\)-bound-states
|
11 pages, RevTeX, TK-93-13
|
Nucl.Phys. A578 (1994) 397-417
|
10.1016/0375-9474(94)90753-6
| null |
nucl-th hep-ph
| null |
We investigate the structure of the instantaneous Bethe-Salpeter equation for
\(q\bar{q}\)-bound states in the general case of unequal quark masses and
develop a numerical scheme for the calculation of mass spectra and
Bethe-Salpeter amplitudes. In order to appreciate the merits of the various
competing models beyond the reproduction of the mass spectra we present
explicit formulas to calculate electroweak decays. The results for an explicit
quark model will be compared to experimental data in a subsequent paper
|
[{'version': 'v1', 'created': 'Wed, 28 Jul 1993 17:12:42 GMT'}]
|
2009-10-22
|
[array(['Resag', 'J.', ''], dtype=object)
array(['Münz', 'C. R.', ''], dtype=object)
array(['Metsch', 'B. C.', ''], dtype=object)
array(['Petry', 'H. R.', ''], dtype=object)]
|
1,482 |
1403.4209
|
Daniel Muscat Mr
|
Daniel Muscat
|
High-Performance Image Synthesis for Radio Interferometry
|
This is a Masters Thesis read at the University of Malta
| null | null | null |
astro-ph.IM
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A radio interferometer indirectly measures the intensity distribution of the
sky over the celestial sphere. Since measurements are made over an irregularly
sampled Fourier plane, synthesising an intensity image from interferometric
measurements requires substantial processing. Furthermore there are distortions
that have to be corrected. In this thesis, a new high-performance image
synthesis tool (imaging tool) for radio interferometry is developed.
Implemented in C++ and CUDA, the imaging tool achieves unprecedented
performance by means of Graphics Processing Units (GPUs). The imaging tool is
divided into several components, and the back-end handling numerical
calculations is generalised in a new framework. A new feature termed
compression arbitrarily increases the performance of an already highly
efficient GPU-based implementation of the w-projection algorithm. Compression
takes advantage of the behaviour of oversampled convolution functions and the
baseline trajectories. A CPU-based component prepares data for the GPU which is
multi-threaded to ensure maximum use of modern multi-core CPUs. Best
performance can only be achieved if all hardware components in a system do work
in parallel. The imaging tool is designed such that disk I/O and work on CPU
and GPUs is done concurrently. Test cases show that the imaging tool performs
nearly 100$\times$ faster than another general CPU-based imaging tool.
Unfortunately, the tool is limited in use since deconvolution and A-projection
are not yet supported. It is also limited by GPU memory. Future work will
implement deconvolution and A-projection, whilst finding ways of overcoming the
memory limitation.
|
[{'version': 'v1', 'created': 'Mon, 17 Mar 2014 18:46:25 GMT'}]
|
2014-03-18
|
[array(['Muscat', 'Daniel', ''], dtype=object)]
|
1,483 |
nucl-th/0405036
|
Azfar Adil
|
Azfar Adil and Miklos Gyulassy
|
Energy Systematics of Jet Tomography at RHIC: sqrt{s} = 62.4 vs 200 AGeV
|
6 pages revtex; 8 encapsulated postscript figures. Accepted for
publication in Physics Letters B. Final Refereed version updated
|
Phys.Lett.B602:52-59,2004
|
10.1016/j.physletb.2004.09.043
| null |
nucl-th
| null |
The collision energy dependence of jet tomography is investigated within the
GLV formalism. The emphasis is on estimating systematic uncertainties resulting
from the interplay of energy loss fluctuations and the rapid increase of the
parton transverse momentum slopes as sqrt{s} decreases from 200 to 62 AGeV.
|
[{'version': 'v1', 'created': 'Wed, 12 May 2004 19:40:15 GMT'}
{'version': 'v2', 'created': 'Wed, 22 Sep 2004 19:53:13 GMT'}]
|
2009-10-09
|
[array(['Adil', 'Azfar', ''], dtype=object)
array(['Gyulassy', 'Miklos', ''], dtype=object)]
|
1,484 |
cond-mat/0109319
|
Marco Grilli
|
C. Di Castro, M. Grilli, and S. Caprara
|
Strong correlation, electron-phonon interaction and critical
fluctuations: Isotope effect, pseudogap formation, and phase diagram of the
cuprates
|
Invited paper to the SNS 2001 Sixth International Conference on
"Spectroscopies of Novel Superconductors" - Chicago, May 13-17, 2001. To
appear on J. Phys. Chem. Sol
| null |
10.1016/S0022-3697(02)00234-2
| null |
cond-mat.supr-con cond-mat.str-el
| null |
Within the Hubbard-Holstein model with long-range Coulomb forces, we revisit
the charge-ordering scenario for the superconducting cuprates and account for
the presence or the absence of a formed stripe phase in different classes of
cuprates. We also evaluate the mean-field and the fluctuation-corrected
critical lines for charge ordering and we relate them with the various
pseudogap crossover lines occurring in the cuprates and we discuss a mechanism
for their peculiar isotopic dependence. Considering the dynamical nature of the
charge-ordering transition, we explain the spread of T* and of its isotopic
shift, obtained with experimental probes with different characteristic time
scales.
|
[{'version': 'v1', 'created': 'Tue, 18 Sep 2001 13:02:53 GMT'}]
|
2009-11-07
|
[array(['Di Castro', 'C.', ''], dtype=object)
array(['Grilli', 'M.', ''], dtype=object)
array(['Caprara', 'S.', ''], dtype=object)]
|
1,485 |
1311.0803
|
Marcin Makowski
|
Marcin Makowski, Edward W. Piotrowski
|
When "I cut, you choose" method implies intransitivity
| null |
Physica A: Statistical Mechanics and its Applications (2014) 415C
pp. 189-193
|
10.1016/j.physa.2014.05.074
| null |
cs.GT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
There is a common belief that humans and many animals follow transitive
inference (choosing A over C on the basis of knowing that A is better than B
and B is better than C). Transitivity seems to be the essence of rational
choice. We present a theoretical model of a repeated game in which the players
make a choice between three goods (e.g. food). The rules of the game refer to
the simple procedure of fair division among two players, known as the "I cut,
you choose" mechanism which has been widely discussed in the literature. In
this game one of the players has to make intransitive choices in order to
achieve the optimal result (for him/her and his/her co-player). The point is
that an intransitive choice can be rational. Previously, an increase in the
significance of intransitive strategies was achieved by referring to models of
quantum games. We show that \textit{relevant intransitive strategies} also
appear in the classic description of decision algorithms.
|
[{'version': 'v1', 'created': 'Thu, 31 Oct 2013 18:43:03 GMT'}
{'version': 'v2', 'created': 'Mon, 2 Dec 2013 09:28:54 GMT'}
{'version': 'v3', 'created': 'Sat, 20 Sep 2014 10:48:02 GMT'}]
|
2014-09-23
|
[array(['Makowski', 'Marcin', ''], dtype=object)
array(['Piotrowski', 'Edward W.', ''], dtype=object)]
|
1,486 |
2202.08668
|
Yair Litman
|
Y. Litman, E. S. P\'os, C. L. Box, R. Martinazzo, R. J. Maurer, and M.
Rossi
|
Dissipative Tunneling Rates through the Incorporation of
First-Principles Electronic Friction in Instanton Rate Theory I: Theory
| null | null |
10.1063/5.0088399
| null |
physics.chem-ph cond-mat.mtrl-sci
|
http://creativecommons.org/licenses/by-sa/4.0/
|
Reactions involving adsorbates on metallic surfaces and impurities in bulk
metals are ubiquitous in a wide range of technological applications. The
theoretical modelling of such reactions presents a formidable challenge for
theory because nuclear quantum effects (NQEs) can play a prominent role and the
coupling of the atomic motion with the electrons in the metal gives rise to
important non-adiabatic effects (NAEs) that alter atomic dynamics. In this
work, we derive a theoretical framework that captures both NQEs and NAEs and,
due to its high efficiency, can be applied to first-principles calculations of
reaction rates in high-dimensional realistic systems. In more detail, we
develop a method that we coin ring polymer instanton with explicit friction
(RPI-EF), starting from the ring-polymer instanton formalism applied to a
system-bath model. We derive general equations that incorporate the spatial and
frequency dependence of the friction tensor, and then combine this method with
the \textit{ab initio} electronic friction formalism for the calculation of
thermal reaction rates. We show that the connection between RPI-EF and the form
of the electronic friction tensor presented in this work does not require any
further approximations, and it is expected to be valid as long as the
approximations of both underlying theories remain valid.
|
[{'version': 'v1', 'created': 'Thu, 17 Feb 2022 14:03:28 GMT'}
{'version': 'v2', 'created': 'Wed, 9 Mar 2022 21:30:00 GMT'}]
|
2022-05-17
|
[array(['Litman', 'Y.', ''], dtype=object)
array(['Pós', 'E. S.', ''], dtype=object)
array(['Box', 'C. L.', ''], dtype=object)
array(['Martinazzo', 'R.', ''], dtype=object)
array(['Maurer', 'R. J.', ''], dtype=object)
array(['Rossi', 'M.', ''], dtype=object)]
|
1,487 |
hep-lat/0110057
|
Meinulf Goeckeler
|
M. G\"ockeler, R. Horsley, D. Pleiter, P.E.L. Rakow, S. Schaefer, A.
Sch\"afer, G. Schierholz
|
The spin structure of the Lambda hyperon in quenched lattice QCD
|
Lattice2001(matrixelement), 3 pages, 2 figures
|
Nucl.Phys.Proc.Suppl.106:305-307,2002
|
10.1016/S0920-5632(01)01696-6
|
DESY 01-144
|
hep-lat hep-ph
| null |
It has been suggested to use the production of Lambda hyperons for
investigating the nucleon spin structure. The viability of this idea depends
crucially on the spin structure of the Lambda. Using nonperturbatively O(a)
improved Wilson fermions in the quenched approximation we have studied matrix
elements of two-quark operators in the Lambda. We present results for the axial
vector current, which give us the contributions of the u, d, and s quarks to
the Lambda spin.
|
[{'version': 'v1', 'created': 'Fri, 12 Oct 2001 08:28:55 GMT'}]
|
2008-11-26
|
[array(['Göckeler', 'M.', ''], dtype=object)
array(['Horsley', 'R.', ''], dtype=object)
array(['Pleiter', 'D.', ''], dtype=object)
array(['Rakow', 'P. E. L.', ''], dtype=object)
array(['Schaefer', 'S.', ''], dtype=object)
array(['Schäfer', 'A.', ''], dtype=object)
array(['Schierholz', 'G.', ''], dtype=object)]
|
1,488 |
2205.02417
|
Haotian Wu
|
Haotian Wu, Yulin Shao, Krystian Mikolajczyk, Deniz G\"und\"uz
|
Channel-Adaptive Wireless Image Transmission with OFDM
|
IEEE Wireless Communications Letters
| null |
10.1109/LWC.2022.3204837
| null |
cs.IT eess.SP math.IT
|
http://creativecommons.org/licenses/by/4.0/
|
We present a learning-based channel-adaptive joint source and channel coding
(CA-JSCC) scheme for wireless image transmission over multipath fading
channels. The proposed method is an end-to-end autoencoder architecture with a
dual-attention mechanism employing orthogonal frequency division multiplexing
(OFDM) transmission. Unlike the previous works, our approach is adaptive to
channel-gain and noise-power variations by exploiting the estimated channel
state information (CSI). Specifically, with the proposed dual-attention
mechanism, our model can learn to map the features and allocate
transmission-power resources judiciously based on the estimated CSI. Extensive
numerical experiments verify that CA-JSCC achieves state-of-the-art performance
among existing JSCC schemes. In addition, CA-JSCC is robust to varying channel
conditions and can better exploit the limited channel resources by transmitting
critical features over better subchannels.
|
[{'version': 'v1', 'created': 'Thu, 5 May 2022 03:26:45 GMT'}
{'version': 'v2', 'created': 'Thu, 8 Sep 2022 09:22:04 GMT'}]
|
2022-09-09
|
[array(['Wu', 'Haotian', ''], dtype=object)
array(['Shao', 'Yulin', ''], dtype=object)
array(['Mikolajczyk', 'Krystian', ''], dtype=object)
array(['Gündüz', 'Deniz', ''], dtype=object)]
|
1,489 |
2203.09804
|
Ulf-G. Mei{\ss}ner
|
Chao-Wei Shen, Ulf-G. Mei{\ss}ner
|
Prediction of five-flavored pentaquarks
|
5+2 pages, 5 figures
|
Phys. Lett. B 831 (2022), 137197
|
10.1016/j.physletb.2022.137197
| null |
hep-ph hep-ex nucl-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We analyze the possibility of the existence of a fully exotic pentaquark
state $udsc\bar{b}$, which is made from the five different flavors
participarting in the strong interactions. We investigate the coupled channel
effects of the $B^{(*)} \Xi_c-B^{(*)} \Xi_c^\prime$ system through $t$-channel
vector meson exchange to search for such states. A $B \Xi_c$ and a $B
\Xi_c^\prime$ bound state are found to have binding energies of about
$10-30$~MeV with $B_s\Lambda_c$ and $B_c\Lambda$ being the possible decay
channels. Similarly, a bound state is formed in the $B^* \Xi_c$ and $B^*
\Xi_c^\prime$ channels, respectively. These states could be searched for
through the $pp\to B_c\Lambda X$ or $pp\to B_s^{(*)}\Lambda_c X$ processes by
the LHCb collaboration.
|
[{'version': 'v1', 'created': 'Fri, 18 Mar 2022 09:09:03 GMT'}]
|
2022-06-08
|
[array(['Shen', 'Chao-Wei', ''], dtype=object)
array(['Meißner', 'Ulf-G.', ''], dtype=object)]
|
1,490 |
cond-mat/0610507
|
Juha Karvanen
|
Juha Karvanen, Juha J. Vartiainen, Andrey Timofeev and Jukka Pekola
|
Experimental Designs for Binary Data in Switching Measurements on
Superconducting Josephson Junctions
| null |
Journal of the Royal Statistical Society: Series C (Applied
Statistics) 2007, Vol. 56, 167-181
|
10.1111/j.1467-9876.2007.00572.x
| null |
cond-mat.supr-con physics.data-an stat.AP
| null |
We study the optimal design of switching measurements of small Josephson
junction circuits which operate in the macroscopic quantum tunnelling regime.
Starting from the D-optimality criterion we derive the optimal design for the
estimation of the unknown parameters of the underlying Gumbel type
distribution. As a practical method for the measurements, we propose a
sequential design that combines heuristic search for initial estimates and
maximum likelihood estimation. The presented design has immediate applications
in the area of superconducting electronics implying faster data acquisition.
The presented experimental results confirm the usefulness of the method. KEY
WORDS: optimal design, D-optimality, logistic regression, complementary log-log
link, quantum physics, escape measurements
|
[{'version': 'v1', 'created': 'Wed, 18 Oct 2006 11:40:38 GMT'}]
|
2008-02-07
|
[array(['Karvanen', 'Juha', ''], dtype=object)
array(['Vartiainen', 'Juha J.', ''], dtype=object)
array(['Timofeev', 'Andrey', ''], dtype=object)
array(['Pekola', 'Jukka', ''], dtype=object)]
|
1,491 |
1701.03858
|
Masahiro Shiota
|
Masahiro Shiota
|
Semialgebraic metric spcaes and resolution of singularities of definable
sets
|
24 pages, 4 figures
| null | null | null |
math.AG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Consider the semialgebraic structure over the real field. More generally, let
an ominimal structure be over a real closed field. We show that a definable
metric space X with a definable metric d is embedded into a Euclidean space so
that its closure is compact and the metric on the image induced by d is
extended to a definable metric on the closure if and only if the limit of
d(r(t);r(t)) is 0 as t converges to 0 for any definable continuous curve r from
(0, 1] to X (Theorem 1). We also find two compact semialgebraic metric spaces
over the real field which are isometric but not semialgebraically isometric
(Theorem 2). A version of blow up is the key to the proof of Theorem 1. Using
it in the same way, we prove a resolution of singularities of definable sets
(Theorem 3). We prove the theorems by a constructive procedure.
|
[{'version': 'v1', 'created': 'Sat, 14 Jan 2017 01:03:55 GMT'}
{'version': 'v2', 'created': 'Sun, 27 Aug 2017 02:29:28 GMT'}
{'version': 'v3', 'created': 'Wed, 30 Aug 2017 06:16:13 GMT'}]
|
2017-08-31
|
[array(['Shiota', 'Masahiro', ''], dtype=object)]
|
1,492 |
hep-th/9212120
| null |
J.G. Russo
|
Classical Solutions in Two-Dimensional String Theory and Gravitational
Collapse
|
7 pages, UTTG-31-92
|
Phys.Rev.D47:4188-4191,1993
|
10.1103/PhysRevD.47.R4188
| null |
hep-th
| null |
A general solution to the $D=2$ 1-loop beta functions equations including
tachyonic back reaction on the metric is presented. Dynamical black hole
(classical) solutions representing gravitational collapse of tachyons are
constructed. A discussion on the correspondence with the matrix-model approach
is given.
|
[{'version': 'v1', 'created': 'Sun, 20 Dec 1992 23:47:33 GMT'}]
|
2009-12-30
|
[array(['Russo', 'J. G.', ''], dtype=object)]
|
1,493 |
0804.0912
|
Petr Kopnin
|
P. N. Kopnin (1 and 2), M. I. Vysotsky (1) ((1) Institute for
Theoretical and Experimental Physics, (2) Moscow Institute of Physics and
Technology)
|
Manifestation of a singlet heavy up-type quark in the branching ratios
of rare decays K to \pi \nu \bar{\nu}, B to \pi \nu \bar{\nu} and B to K \nu
\bar{\nu}
|
13 pages, 3 figures. Submitted to the JETP Letters. A reference
added, minor typos corrected
|
JETP Lett.87:517-523,2008
|
10.1134/S0021364008100019
| null |
hep-ph hep-ex
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We investigate the implications of the model with a SU(2)-singlet up-type
quark, heavy enough not to be produced at the LHC, namely, the contribution of
the new quark to the branching ratios of the K to \pi \nu \bar{\nu}, B to \pi
\nu \bar{\nu} and B to K \nu \bar{\nu} decays. We show that the deviation from
the Standard Model can be up to 10% in the case of a 5 TeV quark. Precise
measurements of these branching ratios at the future experiments will allow to
observe the contributions of the new quark or to impose stronger constraints on
its mass.
|
[{'version': 'v1', 'created': 'Sun, 6 Apr 2008 15:06:47 GMT'}
{'version': 'v2', 'created': 'Tue, 22 Apr 2008 17:47:54 GMT'}]
|
2011-02-01
|
[array(['Kopnin', 'P. N.', '', '1 and 2'], dtype=object)
array(['Vysotsky', 'M. I.', ''], dtype=object)]
|
1,494 |
cond-mat/0605574
|
Supriyo Bandyopadhyay
|
Supriyo Bandyopadhyay
|
Power dissipation in spintronic devices: A general perspective
|
To appear in Journal of Nanoscience and Nanotechnology
|
Journal of Nanoscience and Nanotechnology, 7, 168 (2007)
| null | null |
cond-mat.mes-hall
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Champions of spintronics often claim that spin based signal processing
devices will vastly increase speed and/or reduce power dissipation compared to
traditional charge based electronic devices. Yet, not a single spintronic
device exists today that can lend credence to this claim. Here, I show that no
spintronic device that clones conventional electronic devices, such as field
effect transistors and bipolar junction transistors, is likely to reduce power
dissipation significantly. For that to happen, spin-based devices must forsake
the transistor paradigm of switching states by physical movement of charges,
and instead, switch states by flipping spins of stationary charges. An
embodiment of this approach is the single spin logic idea proposed more than 10
years ago. Here, I revisit that idea and present estimates of the switching
speed and power dissipation. I show that the Single Spin Switch is far superior
to the Spin Field Effect Transistor (or any of its clones) in terms of power
dissipation. I also introduce the notion of matrix element engineering which
will allow one to switch devices without raising and lowering energy barriers
between logic states, thereby circumventing the kTln2 limit on energy
dissipation. Finally, I briefly discuss single spin implementations of
classical reversible (adiabatic) logic.
|
[{'version': 'v1', 'created': 'Tue, 23 May 2006 14:52:46 GMT'}
{'version': 'v2', 'created': 'Fri, 12 Oct 2012 20:04:32 GMT'}]
|
2012-10-16
|
[array(['Bandyopadhyay', 'Supriyo', ''], dtype=object)]
|
1,495 |
2103.16038
|
Kohei Yamamoto
|
Kohei Yamamoto, Tomoyuki Tsuyama, Suguru Ito, Kou Takubo, Iwao
Matsuda, Niko Pontius, Christian Sch\"u{\ss}ler-Langeheine, Makoto Minohara,
Hiroshi Kumigashira, Yuichi Yamasaki, Hironori Nakao, Youichi Murakami,
Takayoshi Katase, Toshio Kamiya, Hiroki Wadati
|
Photoinduced Transient States of Antiferromagnetic Orderings in
La${}_{1/3}$Sr${}_{2/3}$FeO${}_{3}$ and SrFeO${}_{3}$ Thin Films Observed
through Time-resolved Resonant Soft X-ray Scattering
|
7 pages, 5 figures
| null |
10.1088/1367-2630/ac5f31
| null |
cond-mat.str-el cond-mat.mtrl-sci
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The relationship between the magnetic interaction and photoinduced dynamics
in antiferromagnetic perovskites is investigated in this study. In
La${}_{1/3}$Sr${}_{2/3}$FeO${}_{3}$ thin films, commensurate spin ordering is
accompanied by charge disproportionation, whereas SrFeO${}_{3}$ thin films show
incommensurate helical antiferromagnetic spin ordering due to increased
ferromagnetic coupling compared to La${}_{1/3}$Sr${}_{2/3}$FeO${}_{3}$. To
understand the photoinduced spin dynamics in these materials, we investigate
the spin ordering through time-resolved resonant soft X-ray scattering. In
La${}_{1/3}$Sr${}_{2/3}$FeO${}_{3}$, ultrafast quenching of the magnetic
ordering within 130 fs through a nonthermal process is observed, triggered by
charge transfer between the Fe atoms. We compare this to the photoinduced
dynamics of the helical magnetic ordering of SrFeO${}_{3}$. We find that the
change in the magnetic coupling through optically induced charge transfer can
offer an even more efficient channel for spin-order manipulation.
|
[{'version': 'v1', 'created': 'Tue, 30 Mar 2021 02:45:38 GMT'}]
|
2022-04-20
|
[array(['Yamamoto', 'Kohei', ''], dtype=object)
array(['Tsuyama', 'Tomoyuki', ''], dtype=object)
array(['Ito', 'Suguru', ''], dtype=object)
array(['Takubo', 'Kou', ''], dtype=object)
array(['Matsuda', 'Iwao', ''], dtype=object)
array(['Pontius', 'Niko', ''], dtype=object)
array(['Schüßler-Langeheine', 'Christian', ''], dtype=object)
array(['Minohara', 'Makoto', ''], dtype=object)
array(['Kumigashira', 'Hiroshi', ''], dtype=object)
array(['Yamasaki', 'Yuichi', ''], dtype=object)
array(['Nakao', 'Hironori', ''], dtype=object)
array(['Murakami', 'Youichi', ''], dtype=object)
array(['Katase', 'Takayoshi', ''], dtype=object)
array(['Kamiya', 'Toshio', ''], dtype=object)
array(['Wadati', 'Hiroki', ''], dtype=object)]
|
1,496 |
1011.0932
|
Adam Ginsburg
|
John Bally, James Aguirre, Cara Battersby, Eric Todd Bradley, Claudia
Cyganowski, Darren Dowell, Meredith Drosback, Miranda K Dunham, Neal J. Evans
II, Adam Ginsburg, Jason Glenn, Paul Harvey, Elisabeth Mills, Manuel Merello,
Erik Rosolowsky, Wayne Schlingman, Yancy L. Shirley, Guy S. Stringfellow,
Josh Walawender, and Jonathan Williams
|
The Bolocam Galactic Plane Survey IV: 1.1 and 0.35 mm Dust Continuum
Emission in the Galactic Center Region
|
76 pages, 22 figures, published in ApJ:
http://iopscience.iop.org/0004-637X/721/1/137/
|
Astrophys.J.721:137-163,2010
|
10.1088/0004-637X/721/1/137
| null |
astro-ph.GA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The Bolocam Galactic Plane Survey (BGPS) data for a six square degree region
of the Galactic plane containing the Galactic center is analyzed and compared
to infrared and radio continuum data. The BGPS 1.1 mm emission consists of
clumps interconnected by a network of fainter filaments surrounding cavities, a
few of which are filled with diffuse near-IR emission indicating the presence
of warm dust or with radio continuum characteristic of HII regions or supernova
remnants. New 350 {\mu}m images of the environments of the two brightest
regions, Sgr A and B, are presented. Sgr B2 is the brightest mm-emitting clump
in the Central Molecular Zone and may be forming the closest analog to a super
star cluster in the Galaxy. The Central Molecular Zone (CMZ) contains the
highest concentration of mm and sub-mm emitting dense clumps in the Galaxy.
Most 1.1 mm features at positive longitudes are seen in silhouette against the
3.6 to 24 {\mu}m background observed by the Spitzer Space Telescope. However,
only a few clumps at negative longitudes are seen in absorption, confirming the
hypothesis that positive longitude clumps in the CMZ tend to be on the
near-side of the Galactic center, consistent with the suspected orientation of
the central bar in our Galaxy. Some 1.1 mm cloud surfaces are seen in emission
at 8 {\mu}m, presumably due to polycyclic aromatic hydrocarbons (PAHs). A
~0.2\degree (~30 pc) diameter cavity and infrared bubble between l \approx
0.0\degree and 0.2\degree surrounds the Arches and Quintuplet clusters and Sgr
A. The bubble contains several clumpy dust filaments that point toward Sgr
A\ast; its potential role in their formation is explored. [abstract truncated]
|
[{'version': 'v1', 'created': 'Wed, 3 Nov 2010 16:46:15 GMT'}]
|
2010-11-30
|
[array(['Bally', 'John', ''], dtype=object)
array(['Aguirre', 'James', ''], dtype=object)
array(['Battersby', 'Cara', ''], dtype=object)
array(['Bradley', 'Eric Todd', ''], dtype=object)
array(['Cyganowski', 'Claudia', ''], dtype=object)
array(['Dowell', 'Darren', ''], dtype=object)
array(['Drosback', 'Meredith', ''], dtype=object)
array(['Dunham', 'Miranda K', ''], dtype=object)
array(['Evans', 'Neal J.', 'II'], dtype=object)
array(['Ginsburg', 'Adam', ''], dtype=object)
array(['Glenn', 'Jason', ''], dtype=object)
array(['Harvey', 'Paul', ''], dtype=object)
array(['Mills', 'Elisabeth', ''], dtype=object)
array(['Merello', 'Manuel', ''], dtype=object)
array(['Rosolowsky', 'Erik', ''], dtype=object)
array(['Schlingman', 'Wayne', ''], dtype=object)
array(['Shirley', 'Yancy L.', ''], dtype=object)
array(['Stringfellow', 'Guy S.', ''], dtype=object)
array(['Walawender', 'Josh', ''], dtype=object)
array(['Williams', 'Jonathan', ''], dtype=object)]
|
1,497 |
1401.3733
|
Ed Bennett
|
Ed Bennett, Luigi Del Debbio, Kirk Jordan, Biagio Lucini, Agostino
Patella, Claudio Pica, Antonio Rago
|
BSMBench: a flexible and scalable supercomputer benchmark from
computational particle physics
|
6 pages, 5 figures; version as presented at High Performance
Computing and Simulation, HPCS 2016
|
2016 International Conference on High Performance Computing &
Simulation (HPCS), Innsbruck, Austria, 2016, pp. 834-839
|
10.1109/HPCSim.2016.7568421
|
CP3-Origins-2014-001 DNRF90 & DIAS-2014-1
|
cs.DC hep-lat
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Lattice Quantum ChromoDynamics (QCD), and by extension its parent field,
Lattice Gauge Theory (LGT), make up a significant fraction of supercomputing
cycles worldwide. As such, it would be irresponsible not to evaluate machines'
suitability for such applications. To this end, a benchmark has been developed
to assess the performance of LGT applications on modern HPC platforms. Distinct
from previous QCD-based benchmarks, this allows probing the behaviour of a
variety of theories, which allows varying the ratio of demands between on-node
computations and inter-node communications. The results of testing this
benchmark on various recent HPC platforms are presented, and directions for
future development are discussed.
|
[{'version': 'v1', 'created': 'Wed, 15 Jan 2014 20:33:38 GMT'}
{'version': 'v2', 'created': 'Thu, 22 Sep 2016 12:27:22 GMT'}]
|
2016-09-23
|
[array(['Bennett', 'Ed', ''], dtype=object)
array(['Del Debbio', 'Luigi', ''], dtype=object)
array(['Jordan', 'Kirk', ''], dtype=object)
array(['Lucini', 'Biagio', ''], dtype=object)
array(['Patella', 'Agostino', ''], dtype=object)
array(['Pica', 'Claudio', ''], dtype=object)
array(['Rago', 'Antonio', ''], dtype=object)]
|
1,498 |
1309.2147
|
Evgeny Mukhin
|
B. Feigin, M. Jimbo, T. Miwa, and E. Mukhin
|
Branching rules for quantum toroidal gl(n)
|
Latex, 38 pages, misprints corrected
|
Advances in Mathematics, 300 (2016), 229-274
| null | null |
math.QA math-ph math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We construct an analog of the subalgebra $Ugl(n)\otimes Ugl(m)$ of $Ugl(m+n)$
in the setting of quantum toroidal algebras and study the restrictions of
various representations to this subalgebra.
|
[{'version': 'v1', 'created': 'Mon, 9 Sep 2013 13:08:20 GMT'}
{'version': 'v2', 'created': 'Fri, 4 Apr 2014 16:07:43 GMT'}
{'version': 'v3', 'created': 'Sat, 13 Jan 2018 00:44:26 GMT'}]
|
2018-01-16
|
[array(['Feigin', 'B.', ''], dtype=object)
array(['Jimbo', 'M.', ''], dtype=object)
array(['Miwa', 'T.', ''], dtype=object)
array(['Mukhin', 'E.', ''], dtype=object)]
|
1,499 |
1508.02357
|
Samantha Usman
|
Samantha A. Usman, Alexander H. Nitz, Ian W. Harry, Christopher M.
Biwer, Duncan A. Brown, Miriam Cabero, Collin D. Capano, Tito Dal Canton,
Thomas Dent, Stephen Fairhurst, Marcel S. Kehl, Drew Keppel, Badri Krishnan,
Amber Lenon, Andrew Lundgren, Alex B. Nielsen, Larne P. Pekowsky, Harald P.
Pfeiffer, Peter R. Saulson, Matthew West, Joshua L. Willis
|
The PyCBC search for gravitational waves from compact binary coalescence
|
29 pages, 7 figures, accepted by Classical and Quantum Gravity
| null |
10.1088/0264-9381/33/21/215004
|
LIGO-P1500086
|
gr-qc astro-ph.IM
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We describe the PyCBC search for gravitational waves from compact-object
binary coalescences in advanced gravitational-wave detector data. The search
was used in the first Advanced LIGO observing run and unambiguously identified
two black hole binary mergers, GW150914 and GW151226. At its core, the PyCBC
search performs a matched-filter search for binary merger signals using a bank
of gravitational-wave template waveforms. We provide a complete description of
the search pipeline including the steps used to mitigate the effects of noise
transients in the data, identify candidate events and measure their statistical
significance. The analysis is able to measure false-alarm rates as low as one
per million years, required for confident detection of signals. Using data from
initial LIGO's sixth science run, we show that the new analysis reduces the
background noise in the search, giving a 30% increase in sensitive volume for
binary neutron star systems over previous searches.
|
[{'version': 'v1', 'created': 'Mon, 10 Aug 2015 19:07:10 GMT'}
{'version': 'v2', 'created': 'Sat, 14 May 2016 17:31:30 GMT'}
{'version': 'v3', 'created': 'Wed, 14 Sep 2016 13:54:17 GMT'}]
|
2016-10-19
|
[array(['Usman', 'Samantha A.', ''], dtype=object)
array(['Nitz', 'Alexander H.', ''], dtype=object)
array(['Harry', 'Ian W.', ''], dtype=object)
array(['Biwer', 'Christopher M.', ''], dtype=object)
array(['Brown', 'Duncan A.', ''], dtype=object)
array(['Cabero', 'Miriam', ''], dtype=object)
array(['Capano', 'Collin D.', ''], dtype=object)
array(['Canton', 'Tito Dal', ''], dtype=object)
array(['Dent', 'Thomas', ''], dtype=object)
array(['Fairhurst', 'Stephen', ''], dtype=object)
array(['Kehl', 'Marcel S.', ''], dtype=object)
array(['Keppel', 'Drew', ''], dtype=object)
array(['Krishnan', 'Badri', ''], dtype=object)
array(['Lenon', 'Amber', ''], dtype=object)
array(['Lundgren', 'Andrew', ''], dtype=object)
array(['Nielsen', 'Alex B.', ''], dtype=object)
array(['Pekowsky', 'Larne P.', ''], dtype=object)
array(['Pfeiffer', 'Harald P.', ''], dtype=object)
array(['Saulson', 'Peter R.', ''], dtype=object)
array(['West', 'Matthew', ''], dtype=object)
array(['Willis', 'Joshua L.', ''], dtype=object)]
|
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