Unnamed: 0
int64 0
20k
| id
stringlengths 9
16
| submitter
stringlengths 1
50
⌀ | authors
stringlengths 5
15.2k
| title
stringlengths 7
294
| comments
stringlengths 1
682
⌀ | journal-ref
stringlengths 4
256
⌀ | doi
stringlengths 13
133
⌀ | report-no
stringlengths 2
187
⌀ | categories
stringlengths 5
90
| license
stringclasses 9
values | abstract
stringlengths 21
2.62k
| versions
stringlengths 62
2.35k
| update_date
stringlengths 10
10
| authors_parsed
stringlengths 39
44.4k
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
4,200 |
math/0702253
|
Alexander Pushnitski
|
Alexander Pushnitski
|
Differences of spectral projections and scattering matrix
|
Latex, 14 pages
| null | null | null |
math.SP
| null |
In the scattering theory framework, we point out a connection between the
spectrum of the scattering matrix of two operators and the spectrum of the
difference of spectral projections of these operators.
|
[{'version': 'v1', 'created': 'Fri, 9 Feb 2007 11:43:57 GMT'}]
|
2007-05-23
|
[array(['Pushnitski', 'Alexander', ''], dtype=object)]
|
4,201 |
2303.12099
|
Evan Anders
|
Evan H. Anders, May G. Pedersen
|
Convective boundary mixing in main-sequence stars: theory and empirical
constraints
|
Appears roughly as published; invited review in the Galaxies special
issue, "The Structure and Evolution of Stars". Supplementary materials can be
found online in a Zenodo repository at https://zenodo.org/record/7735067
|
Galaxies 2023, 11(2), 56
|
10.3390/galaxies11020056
| null |
astro-ph.SR physics.flu-dyn
|
http://creativecommons.org/licenses/by/4.0/
|
The convective envelopes of solar-type stars and the convective cores of
intermediate- and high-mass stars share boundaries with stable radiative zones.
Through a host of processes we collectively refer to as "convective boundary
mixing" (CBM), convection can drive efficient mixing in these nominally stable
regions. In this review, we discuss the current state of CBM research in the
context of main-sequence stars through three lenses. (1) We examine the most
frequently implemented 1D prescriptions of CBM -- exponential overshoot, step
overshoot, and convective penetration -- and we include a discussion of
implementation degeneracies and how to convert between various prescriptions.
(2) Next, we examine the literature of CBM from a fluid dynamical perspective,
with a focus on three distinct processes: convective overshoot, entrainment,
and convective penetration. (3) Finally, we discuss observational inferences
regarding how much mixing should occur in the cores of intermediate- and
high-mass stars, and the implied constraints that these observations place on
1D CBM implementations. We conclude with a discussion of pathways forward for
future studies to place better constraints on this difficult challenge in
stellar evolution modeling.
|
[{'version': 'v1', 'created': 'Tue, 21 Mar 2023 18:00:00 GMT'}
{'version': 'v2', 'created': 'Sat, 15 Apr 2023 20:15:13 GMT'}]
|
2023-04-18
|
[array(['Anders', 'Evan H.', ''], dtype=object)
array(['Pedersen', 'May G.', ''], dtype=object)]
|
4,202 |
0911.3366
|
YanYan Li
|
YanYan Li and Luc Nguyen
|
A fully nonlinear version of the Yamabe problem on locally conformally
flat manifolds with umbilic boundary
| null | null | null | null |
math.AP math.DG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper we establish existence and compactness of solutions to a
general fully nonlinear version of the Yamabe problem on locally conformally
flat Riemannian manifolds with umbilic boundary.
|
[{'version': 'v1', 'created': 'Tue, 17 Nov 2009 18:29:57 GMT'}]
|
2009-11-18
|
[array(['Li', 'YanYan', ''], dtype=object)
array(['Nguyen', 'Luc', ''], dtype=object)]
|
4,203 |
2209.07634
|
Qingyang Wu
|
Qingyang Wu and Zhou Yu
|
Stateful Memory-Augmented Transformers for Efficient Dialogue Modeling
| null | null | null | null |
cs.CL
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Transformer encoder-decoder models have achieved great performance in
dialogue generation tasks, however, their inability to process long dialogue
history often leads to truncation of the context To address this problem, we
propose a novel memory-augmented transformer that is compatible with existing
pre-trained encoder-decoder models and enables efficient preservation of the
dialogue history information. By incorporating a separate memory module
alongside the pre-trained transformer, the model can effectively interchange
information between the memory states and the current input context. We
evaluate our model on three dialogue datasets and two language modeling
datasets. Experimental results show that our method has achieved superior
efficiency and performance compared to other pre-trained Transformer baselines.
|
[{'version': 'v1', 'created': 'Thu, 15 Sep 2022 22:37:22 GMT'}
{'version': 'v2', 'created': 'Tue, 23 May 2023 05:59:06 GMT'}]
|
2023-05-24
|
[array(['Wu', 'Qingyang', ''], dtype=object)
array(['Yu', 'Zhou', ''], dtype=object)]
|
4,204 |
cond-mat/0211178
|
Marc-Henri Julien
|
M.-H. Julien
|
Magnetic order and superconductivity in LSCO: a review
|
To appear in Physica B (LT23 proceedings)
|
Physica B 329-333, p. 693 (2003)
|
10.1016/S0921-4526(02)01997-X
| null |
cond-mat.supr-con cond-mat.str-el
| null |
High-Tc copper oxides of the LSCO family show a very clear case of
competition between antiferromagnetic (AF) order and superconductivity.
Magnetic order can, however, coexist with superconductivity, and the
experimental evidence for frozen magnetic moments in superconducting samples is
reviewed here. The primary characteristics of the magnetic order are summarized
and some open questions are outlined, particularly concerning the intrinsic or
extrinsic nature of this order around x=0.12.
|
[{'version': 'v1', 'created': 'Sat, 9 Nov 2002 09:59:31 GMT'}]
|
2009-11-07
|
[array(['Julien', 'M. -H.', ''], dtype=object)]
|
4,205 |
2211.06402
|
Anjana Wijekoon
|
Anjana Wijekoon and David Corsar and Nirmalie Wiratunga
|
Behaviour Trees for Creating Conversational Explanation Experiences
| null | null | null | null |
cs.AI
|
http://creativecommons.org/licenses/by/4.0/
|
This paper presented an XAI system specification and an interactive dialogue
model to facilitate the creation of Explanation Experiences (EE). Such
specifications combine the knowledge of XAI, domain and system experts of a use
case to formalise target user groups and their explanation needs and to
implement explanation strategies to address those needs. Formalising the XAI
system promotes the reuse of existing explainers and known explanation needs
that can be refined and evolved over time using user evaluation feedback. The
abstract EE dialogue model formalised the interactions between a user and an
XAI system. The resulting EE conversational chatbot is personalised to an XAI
system at run-time using the knowledge captured in its XAI system
specification. This seamless integration is enabled by using Behaviour Trees
(BT) to conceptualise both the EE dialogue model and the explanation
strategies. In the evaluation, we discussed several desirable properties of
using BTs over traditionally used STMs or FSMs. BTs promote the reusability of
dialogue components through the hierarchical nature of the design. Sub-trees
are modular, i.e. a sub-tree is responsible for a specific behaviour, which can
be designed in different levels of granularity to improve human
interpretability. The EE dialogue model consists of abstract behaviours needed
to capture EE, accordingly, it can be implemented as a conversational,
graphical or text-based interface which caters to different domains and users.
There is a significant computational cost when using BTs for modelling
dialogue, which we mitigate by using memory. Overall, we find that the ability
to create robust conversational pathways dynamically makes BTs a good candidate
for designing and implementing conversation for creating explanation
experiences.
|
[{'version': 'v1', 'created': 'Fri, 11 Nov 2022 18:39:38 GMT'}
{'version': 'v2', 'created': 'Fri, 6 Jan 2023 10:01:49 GMT'}]
|
2023-01-09
|
[array(['Wijekoon', 'Anjana', ''], dtype=object)
array(['Corsar', 'David', ''], dtype=object)
array(['Wiratunga', 'Nirmalie', ''], dtype=object)]
|
4,206 |
2306.09772
|
Xiangyu Y Hu
|
Massoud Rezavand and Xiangyu Hu
|
Numerical simulation of two-phase slug flows in horizontal pipelines: A
3-D smoothed particle hydrodynamics application
|
33 pages and 14 figures
| null | null | null |
physics.flu-dyn
|
http://creativecommons.org/licenses/by/4.0/
|
A fundamental difficulty of studying gas-liquid pipe flows is the prediction
of the occurrence and characteristics of the slug flow regime, which plays a
crucial role in the safety design of oil pipelines. Current empirical methods
and one-dimensional computational models only achieve limited success. While
3-D numerical simulations are highly recommended, they have been very seldom
used. We perform 3-D Lagrangian numerical simulations of gas-liquid pipe flows,
and focus on the interfacial instabilities leading to slug formation. We adapt
an existing multi-phase smoothed particle hydrodynamics (SPH) method based on a
Riemann solver to achieve an efficient solver with no dependency on empirical
correlations. To realize the high inlet velocities of gas and liquid an in- and
outlet boundary condition is presented. The results are validated against
existing experimental data, numerical simulations and analytical solutions.
Multiple gas-liquid pipe flow patterns are predicted, namely, smooth
stratified, stratified wavy, bubble flow, slug flow and bubble flow. Several
principle characteristics of slug flows, e.g., pressure gradient, slug
development and slug frequency are analyzed.
|
[{'version': 'v1', 'created': 'Fri, 16 Jun 2023 11:10:07 GMT'}]
|
2023-06-19
|
[array(['Rezavand', 'Massoud', ''], dtype=object)
array(['Hu', 'Xiangyu', ''], dtype=object)]
|
4,207 |
2002.09596
|
Shinya Kumashiro
|
J\"urgen Herzog, Shinya Kumashiro, Dumitru I. Stamate
|
Graded Bourbaki ideals of graded modules
|
29 pages
| null | null | null |
math.AC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper we study graded Bourbaki ideals. It is a well-known fact that
for torsionfree modules over Noetherian normal domains, Bourbaki sequences
exist. We give criteria in terms of certain attached matrices for a
homomorphism of modules to induce a Bourbaki sequence. Special attention is
given to graded Bourbaki sequences. In the second part of the paper, we apply
these results to the Koszul cycles of the residue class field and determine
particular Bourbaki ideals explicitly. We also obtain in a special case the
relationship between the structure of the Rees algebra of a Koszul cycle and
the Rees algebra of its Bourbaki ideal.
|
[{'version': 'v1', 'created': 'Sat, 22 Feb 2020 01:40:25 GMT'}
{'version': 'v2', 'created': 'Mon, 11 Jan 2021 05:05:27 GMT'}]
|
2021-01-12
|
[array(['Herzog', 'Jürgen', ''], dtype=object)
array(['Kumashiro', 'Shinya', ''], dtype=object)
array(['Stamate', 'Dumitru I.', ''], dtype=object)]
|
4,208 |
1303.0254
|
Amaury Triaud
|
Amaury H. M. J. Triaud, D. R. Anderson, A. Collier Cameron, A. P.
Doyle, A. Fumel, M. Gillon, C. Hellier, E. Jehin, M. Lendl, C. Lovis, P. F.
L. Maxted, F. Pepe, D. Pollacco, D. Queloz, D. Segransan, B. Smalley, A. M.
S. Smith, S. Udry, R. G. West and P. J. Wheatley
|
WASP-80b: a gas giant transiting a cool dwarf
|
Accepted in A&A, five pages, three figures and one table. RV and
photometric data available at the CDS
|
2013, A&A 551, A80
|
10.1051/0004-6361/201220900
| null |
astro-ph.EP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We report the discovery of a planet transiting the star WASP-80 (1SWASP
J201240.26-020838.2; 2MASS J20124017-0208391; TYC 5165-481-1; BPM 80815;
V=11.9, K=8.4). Our analysis shows this is a 0.55 +/- 0.04 Mjup, 0.95 +/- 0.03
Rjup gas giant on a circular 3.07 day orbit around a star with a spectral type
between K7V and M0V. This system produces one of the largest transit depths so
far reported, making it a worthwhile target for transmission spectroscopy. We
find a large discrepancy between the v sin i inferred from stellar line
broadening and the observed amplitude of the Rossiter-McLaughlin effect. This
can be understood either by an orbital plane nearly perpendicular to the
stellar spin or by an additional, unaccounted for source of broadening.
|
[{'version': 'v1', 'created': 'Fri, 1 Mar 2013 19:18:16 GMT'}]
|
2013-03-04
|
[array(['Triaud', 'Amaury H. M. J.', ''], dtype=object)
array(['Anderson', 'D. R.', ''], dtype=object)
array(['Cameron', 'A. Collier', ''], dtype=object)
array(['Doyle', 'A. P.', ''], dtype=object)
array(['Fumel', 'A.', ''], dtype=object)
array(['Gillon', 'M.', ''], dtype=object)
array(['Hellier', 'C.', ''], dtype=object)
array(['Jehin', 'E.', ''], dtype=object)
array(['Lendl', 'M.', ''], dtype=object)
array(['Lovis', 'C.', ''], dtype=object)
array(['Maxted', 'P. F. L.', ''], dtype=object)
array(['Pepe', 'F.', ''], dtype=object)
array(['Pollacco', 'D.', ''], dtype=object)
array(['Queloz', 'D.', ''], dtype=object)
array(['Segransan', 'D.', ''], dtype=object)
array(['Smalley', 'B.', ''], dtype=object)
array(['Smith', 'A. M. S.', ''], dtype=object)
array(['Udry', 'S.', ''], dtype=object)
array(['West', 'R. G.', ''], dtype=object)
array(['Wheatley', 'P. J.', ''], dtype=object)]
|
4,209 |
1912.07583
|
Markus Hausmann
|
Markus Hausmann
|
Global group laws and equivariant bordism rings
|
Final version to appear in Annals of Mathematics
| null | null |
CPH-SYM-DNRF92
|
math.AT math.AG math.GT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
For every abelian compact Lie group A, we prove that the homotopical
A-equivariant complex bordism ring, introduced by tom Dieck (1970), is
isomorphic to the A-equivariant Lazard ring, introduced by Cole-Greenlees-Kriz
(2000). This settles a conjecture of Greenlees. We also show an analog for
homotopical real bordism rings over elementary abelian 2-groups. Our results
generalize classical theorems of Quillen (1969) on the connection between
non-equivariant bordism rings and formal group laws, and extend the case $A =
C_2$ due to Hanke-Wiemeler (2018).
We work in the framework of global homotopy theory, which is essential for
our proof. In addition to the statements for a fixed group A, we also prove a
global algebraic universal property that characterizes the collection of all
equivariant complex bordism rings simultaneously. We show that they form the
universal contravariant functor from abelian compact Lie groups to commutative
rings that is equipped with a coordinate; the coordinate is given by the
universal Euler class at the circle group. More generally, the ring of n-fold
cooperations of equivariant complex bordism is shown to be universal among
functors equipped with a strict n-tuple of coordinates.
|
[{'version': 'v1', 'created': 'Mon, 16 Dec 2019 18:55:32 GMT'}
{'version': 'v2', 'created': 'Mon, 7 Feb 2022 14:18:38 GMT'}]
|
2022-02-08
|
[array(['Hausmann', 'Markus', ''], dtype=object)]
|
4,210 |
2004.06030
|
Yilun Du
|
Yilun Du, Shuang Li, Igor Mordatch
|
Compositional Visual Generation and Inference with Energy Based Models
|
NeurIPS 2020 Spotlight; Website at
https://energy-based-model.github.io/compositional-generation-inference/
| null | null | null |
cs.CV cs.LG stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A vital aspect of human intelligence is the ability to compose increasingly
complex concepts out of simpler ideas, enabling both rapid learning and
adaptation of knowledge. In this paper we show that energy-based models can
exhibit this ability by directly combining probability distributions. Samples
from the combined distribution correspond to compositions of concepts. For
example, given a distribution for smiling faces, and another for male faces, we
can combine them to generate smiling male faces. This allows us to generate
natural images that simultaneously satisfy conjunctions, disjunctions, and
negations of concepts. We evaluate compositional generation abilities of our
model on the CelebA dataset of natural faces and synthetic 3D scene images. We
also demonstrate other unique advantages of our model, such as the ability to
continually learn and incorporate new concepts, or infer compositions of
concept properties underlying an image.
|
[{'version': 'v1', 'created': 'Mon, 13 Apr 2020 16:01:40 GMT'}
{'version': 'v2', 'created': 'Fri, 23 Oct 2020 22:50:40 GMT'}
{'version': 'v3', 'created': 'Thu, 17 Dec 2020 09:26:00 GMT'}]
|
2020-12-18
|
[array(['Du', 'Yilun', ''], dtype=object)
array(['Li', 'Shuang', ''], dtype=object)
array(['Mordatch', 'Igor', ''], dtype=object)]
|
4,211 |
1701.06986
|
Shicheng Jiang
|
Shicheng Jiang, Chao Yu, Guanglu Yuan, Tong Wu, Ziwen Wang, and
Ruifeng Lu
|
Quantum-trajectory analysis for charge transfer in solid materials
induced by strong laser fields
| null | null |
10.1088/1361-648X/aa7195
| null |
physics.optics cond-mat.mtrl-sci
|
http://creativecommons.org/licenses/by-nc-sa/4.0/
|
We investigate the dependence of charge transfer on the intensity of driving
laser field when SiO2 crystal is irradiated by an 800 nm laser. It is
surprising that the direction of charge transfer undergoes a sudden reversal
when the driving laser intensity exceeds critical values with different carrier
envelope phases. By applying quantum-trajectory analysis, we find that the
Bloch oscillation plays an important role in charge transfer in solid. Also, we
study the interaction of strong laser with gallium nitride (GaN) that is widely
used in optoelectronics. A pump-probe scheme is applied to control the quantum
trajectories of the electrons in the conduction band. The signal of charge
transfer is controlled successfully by means of theoretically proposed
approach.
|
[{'version': 'v1', 'created': 'Tue, 24 Jan 2017 17:20:56 GMT'}]
|
2017-06-28
|
[array(['Jiang', 'Shicheng', ''], dtype=object)
array(['Yu', 'Chao', ''], dtype=object)
array(['Yuan', 'Guanglu', ''], dtype=object)
array(['Wu', 'Tong', ''], dtype=object)
array(['Wang', 'Ziwen', ''], dtype=object)
array(['Lu', 'Ruifeng', ''], dtype=object)]
|
4,212 |
cond-mat/0408524
|
Minoru Kawamura
|
M. Kawamura, H. Yaguchi, N. Kikugawa, Y. Maeno, H. Takayanagi
|
Tunneling properties at the interface between superconducting Sr2RuO4
and a Ru micro-inclusion
|
4 pages, 4 figures, to appear in J. Phys. Soc. Jpn. vol. 74 no. 2
|
J. Phys. Soc. Jpn., Vol.74, No.2, p.531-534 (2005)
|
10.1143/JPSJ.74.531
| null |
cond-mat.supr-con
| null |
We have investigated the magnetic field and temperature dependence of the
tunneling spectra of the eutectic system Sr2RuO4-Ru. Electric contacts to
individual Ru lamellae embedded in Sr2RuO4 enable the tunneling spectra at the
interface between ruthenate and a Ru microinclusion to be measured. A zero bias
conductance peak (ZBCP) was observed in the bias voltage dependence of the
differential conductance, suggesting that Andreev bound states are present at
the interface. The ZBCP starts to appear at a temperature well below the
superconducting transition temperature. The onset magnetic field of the ZBCP is
also considerably smaller than the upper critical field when the magnetic field
is parallel to the ab-plane. We propose that the difference between the onset
of the ZBCP and the onset of superconductivity can be understood in terms of
the existence of the single-component state predicted by Sigrist and Monien.
|
[{'version': 'v1', 'created': 'Wed, 25 Aug 2004 01:49:56 GMT'}
{'version': 'v2', 'created': 'Mon, 13 Dec 2004 02:27:05 GMT'}]
|
2009-11-10
|
[array(['Kawamura', 'M.', ''], dtype=object)
array(['Yaguchi', 'H.', ''], dtype=object)
array(['Kikugawa', 'N.', ''], dtype=object)
array(['Maeno', 'Y.', ''], dtype=object)
array(['Takayanagi', 'H.', ''], dtype=object)]
|
4,213 |
1910.00551
|
Wenlong Mou
|
Wenlong Mou, Nicolas Flammarion, Martin J. Wainwright, Peter L.
Bartlett
|
An Efficient Sampling Algorithm for Non-smooth Composite Potentials
| null | null | null | null |
stat.ML cs.DS cs.LG stat.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider the problem of sampling from a density of the form $p(x) \propto
\exp(-f(x)- g(x))$, where $f: \mathbb{R}^d \rightarrow \mathbb{R}$ is a smooth
and strongly convex function and $g: \mathbb{R}^d \rightarrow \mathbb{R}$ is a
convex and Lipschitz function. We propose a new algorithm based on the
Metropolis-Hastings framework, and prove that it mixes to within TV distance
$\varepsilon$ of the target density in at most $O(d \log (d/\varepsilon))$
iterations. This guarantee extends previous results on sampling from
distributions with smooth log densities ($g = 0$) to the more general composite
non-smooth case, with the same mixing time up to a multiple of the condition
number. Our method is based on a novel proximal-based proposal distribution
that can be efficiently computed for a large class of non-smooth functions $g$.
|
[{'version': 'v1', 'created': 'Tue, 1 Oct 2019 17:25:55 GMT'}]
|
2019-10-02
|
[array(['Mou', 'Wenlong', ''], dtype=object)
array(['Flammarion', 'Nicolas', ''], dtype=object)
array(['Wainwright', 'Martin J.', ''], dtype=object)
array(['Bartlett', 'Peter L.', ''], dtype=object)]
|
4,214 |
1812.04959
|
Nicholas Mainardi
|
Alessandro Barenghi, Nicholas Mainardi, Gerardo Pelosi
|
Systematic Parsing of X.509: Eradicating Security Issues with a Parse
Tree
| null |
Journal of Computer Security, Volume 26, Issue 6, 30th October
2018
|
10.3233/JCS-171110
| null |
cs.CR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
X.509 certificate parsing and validation is a critical task which has shown
consistent lack of effectiveness, with practical attacks being reported with a
steady rate during the last 10 years. In this work we analyze the X.509
standard and provide a grammar description of it amenable to the automated
generation of a parser with strong termination guarantees, providing
unambiguous input parsing. We report the results of analyzing a 11M X.509
certificate dump of the HTTPS servers running on the entire IPv4 space, showing
that 21.5% of the certificates in use are syntactically invalid. We compare the
results of our parsing against 7 widely used TLS libraries showing that 631k to
1,156k syntactically incorrect certificates are deemed valid by them
(5.7%--10.5%), including instances with security critical mis-parsings. We
prove the criticality of such mis-parsing exploiting one of the syntactic flaws
found in existing certificates to perform an impersonation attack.
|
[{'version': 'v1', 'created': 'Wed, 12 Dec 2018 14:16:02 GMT'}]
|
2018-12-13
|
[array(['Barenghi', 'Alessandro', ''], dtype=object)
array(['Mainardi', 'Nicholas', ''], dtype=object)
array(['Pelosi', 'Gerardo', ''], dtype=object)]
|
4,215 |
1705.04954
|
Elliot Krop
|
Elliot Krop, Pritul Patel, and Gaspar Porta
|
Vizing-type bounds for graphs with induced subgraph restrictions
|
9 pages
| null | null | null |
math.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
For any graphs $G$ and $H$, we say that a bound is of Vizing-type if
$\gamma(G\square H)\geq c \gamma(G)\gamma(H)$ for some constant $c$. We show
several bounds of Vizing-type for graphs $G$ with forbidden induced subgraphs.
In particular, if $G$ is a triangle and $K_{1,r}$-free graph, then for any
graph $H$, $\gamma(G\square H)\geq \frac{r}{2r-1}\gamma(G)\gamma(H)$. If $G$ is
a $K_r$ and $P_5$-free graph for some integer $r\geq 2$, then for any graph
$H$, $\gamma(G\square H)\geq \frac{r-1}{2r-3}\gamma(G)\gamma(H)$. We do this by
bounding the power of $G$, $\pi(G)$. We show that if $G$ is claw-free and
$P_6$-free or $K_4$ and $P_5$-free, then for any graph $H$, $\gamma(G\square
H)\geq \gamma(G)\gamma(H)$. Furthermore, we show Vizing-type bounds in terms of
the diameter of $G$.
|
[{'version': 'v1', 'created': 'Sun, 14 May 2017 11:51:46 GMT'}]
|
2017-05-16
|
[array(['Krop', 'Elliot', ''], dtype=object)
array(['Patel', 'Pritul', ''], dtype=object)
array(['Porta', 'Gaspar', ''], dtype=object)]
|
4,216 |
math/0512558
|
Victor Gichev
|
V.M. Gichev
|
On complete affine structures in Lie groups
|
11 pages. This is a translation of a paper published in Russian with
nonessential changes in the exposition; the mathematical content is identical
|
Essays in differential equations and algebra, IITPM, Omsk (1992),
67-80 (in Russian)
| null | null |
math.DG math-ph math.MP math.RA
| null |
Left invariant affine structures in a Lie group $G$ are in one-to-one
correspondence with left-symmetric algebras over its Lie algebra $\mathfrak
g=T_eG$ (``over'' means that the commutator $[x,y]=xy-yx$ coincides with the
Lie bracket; left-symmetric algebras can be defined as Lie-admissible algebras
such that the multiplication by left defines a representation of the underlying
Lie algebra). An affine structure (and the corresponding left symmetric
algebra) is complete if $G$ is affinely equivalent to $\mathfrak g$. By the
main result of this paper, a complete left symmetric algebra admits a canonical
decomposition: there is a Cartan subalgebra $\mathfrak h$ such that the root
subspaces for the representations $L$ (by left multiplications) and $\ad$
coincide. Then operators $L(x)$ and $\ad(x)$ have equal semisimple parts for
all $x\in\mathfrak h$. This decomposition is unique. For simple complete
left-symmetric algebras whose canonical decomposition consists of one
dimensional spaces we define two types of graphs and prove some their
properties. This makes possible to describe, for dimensions less or equal to 5,
these graphs and algebras.
|
[{'version': 'v1', 'created': 'Sat, 24 Dec 2005 06:47:28 GMT'}]
|
2007-05-23
|
[array(['Gichev', 'V. M.', ''], dtype=object)]
|
4,217 |
1501.00252
|
A.K. Srivastava Dr.
|
K. Murawski, A. Solov'ev, Z.E. Musielak, A.K. Srivastava, J.
Kraskiewicz
|
Torsional Alfven Waves in Solar Magnetic Flux Tubes of Axial Symmetry
|
12 pages; 12 Figures, Astron. Astrophys. (A&A); Comment :
High-resolution images will be appeared with the final paper
|
A&A 577, A126 (2015)
|
10.1051/0004-6361/201424545
| null |
astro-ph.SR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Aims: Propagation and energy transfer of torsional Alfv\'en waves in solar
magnetic flux tubes of axial symmetry is studied. Methods: An analytical model
of a solar magnetic flux tube of axial symmetry is developed by specifying a
magnetic flux and deriving general analytical formulae for the equilibrium mass
density and a gas pressure. The main advantage of this model is that it can be
easily adopted to any axisymmetric magnetic structure. The model is used to
simulate numerically the propagation of nonlinear Alfv\'en waves in such 2D
flux tubes of axial symmetry embedded in the solar atmosphere. The waves are
excited by a localized pulse in the azimuthal component of velocity and
launched at the top of the solar photosphere, and they propagate through the
solar chromosphere, transition region, and into the solar corona. Results: The
results of our numerical simulations reveal a complex scenario of twisted
magnetic field lines and flows associated with torsional Alfv\'en waves as well
as energy transfer to the magnetoacoustic waves that are triggered by the
Alfv\'en waves and are akin to the vertical jet flows. Alfv\'en waves
experience about 5 % amplitude reflection at the transition region. Magnetic
(velocity) field perturbations experience attenuation (growth) with height is
agreement with analytical findings. Kinetic energy of magnetoacoustic waves
consists of 25 % of the total energy of Alfv\'en waves. The energy transfer may
lead to localized mass transport in the form of vertical jets, as well as to
localized heating as slow magnetoacoustic waves are prone to dissipation in the
inner corona.
|
[{'version': 'v1', 'created': 'Thu, 1 Jan 2015 06:19:15 GMT'}]
|
2015-05-20
|
[array(['Murawski', 'K.', ''], dtype=object)
array(["Solov'ev", 'A.', ''], dtype=object)
array(['Musielak', 'Z. E.', ''], dtype=object)
array(['Srivastava', 'A. K.', ''], dtype=object)
array(['Kraskiewicz', 'J.', ''], dtype=object)]
|
4,218 |
cs/0407062
|
Judith Beumer
|
Xuehai Zhang and Jennifer M. Schopf
|
Performance Analysis of the Globus Toolkit Monitoring and Discovery
Service, MDS2
| null | null | null |
Preprint ANL/MCS-P1115-0104
|
cs.DC cs.PF
| null |
Monitoring and information services form a key component of a distributed
system, or Grid. A quantitative study of such services can aid in understanding
the performance limitations, advise in the deployment of the monitoring system,
and help evaluate future development work. To this end, we examined the
performance of the Globus Toolkit(reg. trdmrk) Monitoring and Discovery Service
(MDS2) by instrumenting its main services using NetLogger. Our study shows a
strong advantage to caching or prefetching the data, as well as the need to
have primary components at well-connected sites.
|
[{'version': 'v1', 'created': 'Wed, 28 Jul 2004 14:07:58 GMT'}]
|
2007-05-23
|
[array(['Zhang', 'Xuehai', ''], dtype=object)
array(['Schopf', 'Jennifer M.', ''], dtype=object)]
|
4,219 |
1312.3560
|
Brent Covele
|
Brent Covele, Prashant Valanju, Mike Kotschenreuther, Swadesh Mahajan
|
An Exploration of Advanced X-Divertors on ITER
| null | null |
10.1088/0029-5515/54/7/072006
| null |
physics.plasm-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
It is found that the X-Divertor (XD) configuration [1-3] can be made with the
conventional PF coil set on ITER[4], where all PF coils are outside the TF
coils. Desirable configurations are possible where the PF currents are below
the present maximum design limits on ITER, and where the baseline divertor
cassette is used. It is possible that the XD could be used to assist in
high-power operation on ITER, but some further issues need examination. Note
that the increased major radius of the Super X-Divertor (SXD) [5-8] is not a
feature of the XD geometry. In addition, we present an XD configuration for
K-DEMO [9], to demonstrate that it is also possible to attain the XD
configuration in advanced tokamak reactors with all PF coils outside the TF
coils. The results given here for the XD are far more encouraging than recent
calculations by Lackner and Zohm [10] for the Snowflake [11,12], where the
required high PF currents represent a major technological challenge. The
magnetic field structure in the outboard divertor SOL [13] in the recently
created XD configurations reproduces what was presented in the earlier XD
papers [1-3]. Consequently, the same advantages accrue, but no close-in PF
coils are employed.
|
[{'version': 'v1', 'created': 'Thu, 12 Dec 2013 17:38:27 GMT'}]
|
2015-06-18
|
[array(['Covele', 'Brent', ''], dtype=object)
array(['Valanju', 'Prashant', ''], dtype=object)
array(['Kotschenreuther', 'Mike', ''], dtype=object)
array(['Mahajan', 'Swadesh', ''], dtype=object)]
|
4,220 |
2012.15392
|
James Van Yperen
|
James Van Yperen, Eduard Campillo-Funollet, Rebecca Inkpen, Anjum
Memon, Anotida Madzvamuse
|
A hospital demand and capacity intervention approach for COVID-19 in the
UK
| null |
PLoS ONE 18 (2023)
|
10.1371/journal.pone.0283350
| null |
q-bio.PE math.GM physics.soc-ph
|
http://creativecommons.org/licenses/by/4.0/
|
The mathematical interpretation of interventions for the mitigation of
epidemics and pandemics in the literature often involves finding the optimal
time to initiate an intervention and/or the use of infections to manage impact.
Whilst these methods may work in theory, in order to implement they may require
information which is likely not available whilst one is in the midst of an
epidemic, or they may require impeccable data about infection levels in the
community. In practice, testing and cases data is only as good as the policy of
implementation and the compliance of the individuals, which means that
understanding the levels of infections becomes difficult or complicated from
the data that is provided. In this paper, we aim to develop a different
approach to the mathematical modelling of interventions, not based on
optimality, but based on demand and capacity of local authorities who have to
deal with the epidemic on a day to day basis. In particular, we use data-driven
modelling to calibrate an Susceptible Exposed Infectious Recovered-Died
(SEIR-D) model to infer parameters that depict the dynamics of the epidemic in
a region of the UK. We use the calibrated parameters for forecasting scenarios
and understand, given a maximum capacity of hospital healthcare services, how
the timing of interventions, severity of interventions, and conditions for the
releasing of interventions affect the overall epidemic-picture.
|
[{'version': 'v1', 'created': 'Thu, 31 Dec 2020 01:39:21 GMT'}
{'version': 'v2', 'created': 'Thu, 9 Jun 2022 14:35:08 GMT'}]
|
2023-05-17
|
[array(['Van Yperen', 'James', ''], dtype=object)
array(['Campillo-Funollet', 'Eduard', ''], dtype=object)
array(['Inkpen', 'Rebecca', ''], dtype=object)
array(['Memon', 'Anjum', ''], dtype=object)
array(['Madzvamuse', 'Anotida', ''], dtype=object)]
|
4,221 |
1101.6063
|
Diego Guarin Mr.
|
Diego Guarin, Edilson Delgado, Alvaro Orozco
|
Band-phase-randomized Surrogates to assess nonlinearity in
non-stationary time series
|
submitted to IEEE Transactions on Biomedical Engineering
| null | null | null |
stat.AP physics.data-an
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Testing for nonlinearity is one of the most important preprocessing steps in
nonlinear time series analysis. Typically, this is done by means of the linear
surrogate data methods. But it is a known fact that the validity of the results
heavily depends on the stationarity of the time series. Since most
physiological signals are non-stationary, it is easy to falsely detect
nonlinearity using the linear surrogate data methods. In this document, we
propose a methodology to extend the procedure for generating constrained
surrogate time series in order to assess nonlinearity in non-stationary data.
The method is based on the band-phase-randomized surrogates, which consists
(contrary to the linear surrogate data methods) in randomizing only a portion
of the Fourier phases in the high frequency band. Analysis of simulated time
series showed that in comparison to the linear surrogate data method, our
method is able to discriminate between linear stationarity, linear
non-stationary and nonlinear time series. When applying our methodology to
heart rate variability (HRV) time series that present spikes and other kinds of
nonstationarities, we where able to obtain surrogate time series that look like
the data and preserves linear correlations, something that is not possible to
do with the existing surrogate data methods.
|
[{'version': 'v1', 'created': 'Mon, 31 Jan 2011 20:13:01 GMT'}]
|
2011-02-01
|
[array(['Guarin', 'Diego', ''], dtype=object)
array(['Delgado', 'Edilson', ''], dtype=object)
array(['Orozco', 'Alvaro', ''], dtype=object)]
|
4,222 |
nucl-th/9504028
| null |
G. Q. Li and C. M. Ko
|
Kaon production cross sections from baryon-baryon interactions
|
24 pages, RevTeX,14 figures available from [email protected]
|
Nucl.Phys. A594 (1995) 439-459
|
10.1016/0375-9474(95)00369-C
|
T-950X
|
nucl-th
| null |
In a one-pion plus one-kaon exchange model, we calculate the kaon production
cross sections in nucleon-nucleon, nucleon-delta and delta-delta interactions.
We find that this model describes reasonably well the experimental data on kaon
production in the proton-proton interaction. Near the kaon production
threshold, the cross section obtained from this model is smaller than that from
the linear parameterization of Randrup and Ko. For kaon production cross
sections from the nucleon-delta and delta-delta interactions, the cross
sections are singular in free space, so we calculate them in a nuclear medium
by including the (complex) pion self-energy. The results are compared with the
scaling ansatz of Randrup and Ko. The theoretical cross sections are then used
in a transport model to study kaon production from Au+Au collisions at 1
GeV/nucleon.
|
[{'version': 'v1', 'created': 'Wed, 26 Apr 1995 18:39:37 GMT'}]
|
2015-06-26
|
[array(['Li', 'G. Q.', ''], dtype=object)
array(['Ko', 'C. M.', ''], dtype=object)]
|
4,223 |
1812.09451
|
Enrico Valdinoci
|
Elisa Affili, Serena Dipierro, and Enrico Valdinoci
|
Decay estimates in time for classical and anomalous diffusion
| null | null | null | null |
math.AP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present a series of results focused on the decay in time of solutions of
classical and anomalous diffusive equations in a bounded domain. The size of
the solution is measured in a Lebesgue space, and the setting comprises
time-fractional and space-fractional equations and operators of nonlinear type.
We also discuss how fractional operators may affect long-time asymptotics.
|
[{'version': 'v1', 'created': 'Sat, 22 Dec 2018 05:22:50 GMT'}
{'version': 'v2', 'created': 'Thu, 8 Aug 2019 10:15:38 GMT'}]
|
2019-08-09
|
[array(['Affili', 'Elisa', ''], dtype=object)
array(['Dipierro', 'Serena', ''], dtype=object)
array(['Valdinoci', 'Enrico', ''], dtype=object)]
|
4,224 |
gr-qc/0310014
|
Carlos Kozameh
|
C.N. Kozameh and M.F. Parisi
|
Lorentz Invariance and the semiclassical approximation of loop quantum
gravity
|
6 pages
|
Class.Quant.Grav. 21 (2004) 2617-2621
|
10.1088/0264-9381/21/11/007
| null |
gr-qc
| null |
It is shown that the field equations derived from an effective interaction
hamiltonian for Maxwell and gravitational fields in the semiclassical
approximation of loop quantum gravity using rotational invariant states (such
as weave states) are Lorentz invariant. To derive this result, which is in
agreement with the observational evidence, we use the geometrical properties of
the electromagnetic field.
|
[{'version': 'v1', 'created': 'Thu, 2 Oct 2003 17:11:38 GMT'}
{'version': 'v2', 'created': 'Mon, 12 Apr 2004 20:53:36 GMT'}]
|
2009-11-10
|
[array(['Kozameh', 'C. N.', ''], dtype=object)
array(['Parisi', 'M. F.', ''], dtype=object)]
|
4,225 |
1707.01886
|
Raiyan Abdul Baten
|
Rasoul Shafipour, Raiyan Abdul Baten, Md Kamrul Hasan, Gourab Ghoshal,
Gonzalo Mateos, and Mohammed Ehsan Hoque
|
Buildup of Speaking Skills in an Online Learning Community: A
Network-Analytic Exploration
| null |
Palgrave Communications, vol. 4, June 2018
|
10.1057/s41599-018-0116-6
| null |
cs.SI cs.HC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this study, we explore peer-interaction effects in online networks on
speaking skill development. In particular, we present an evidence for gradual
buildup of skills in a small-group setting that has not been reported in the
literature. We introduce a novel dataset of six online communities consisting
of 158 participants focusing on improving their speaking skills. They
video-record speeches for 5 prompts in 10 days and exchange comments and
performance-ratings with their peers. We ask (i) whether the participants'
ratings are affected by their interaction patterns with peers, and (ii) whether
there is any gradual buildup of speaking skills in the communities towards
homogeneity. To analyze the data, we employ tools from the emerging field of
Graph Signal Processing (GSP). GSP enjoys a distinction from Social Network
Analysis in that the latter is concerned primarily with the connection
structures of graphs, while the former studies signals on top of graphs. We
study the performance ratings of the participants as graph signals atop
underlying interaction topologies. Total variation analysis of the graph
signals show that the participants' rating differences decrease with time
(slope=-0.04, p<0.01), while average ratings increase (slope=0.07,
p<0.05)--thereby gradually building up the ratings towards community-wide
homogeneity. We provide evidence for peer-influence through a prediction
formulation. Our consensus-based prediction model outperforms baseline
network-agnostic regression models by about 23% in predicting performance
ratings. This, in turn, shows that participants' ratings are affected by their
peers' ratings and the associated interaction patterns, corroborating previous
findings. Then, we formulate a consensus-based diffusion model that captures
these observations of peer-influence from our analyses.
|
[{'version': 'v1', 'created': 'Thu, 6 Jul 2017 17:41:21 GMT'}
{'version': 'v2', 'created': 'Sat, 7 Oct 2017 22:52:56 GMT'}
{'version': 'v3', 'created': 'Mon, 12 Mar 2018 16:49:11 GMT'}]
|
2018-06-14
|
[array(['Shafipour', 'Rasoul', ''], dtype=object)
array(['Baten', 'Raiyan Abdul', ''], dtype=object)
array(['Hasan', 'Md Kamrul', ''], dtype=object)
array(['Ghoshal', 'Gourab', ''], dtype=object)
array(['Mateos', 'Gonzalo', ''], dtype=object)
array(['Hoque', 'Mohammed Ehsan', ''], dtype=object)]
|
4,226 |
1103.2509
|
Llu\'is Bel
|
Ll. Bel
|
Born's group and Generalized isometries
|
In Proceedings of ERE93, Edited version, 9 pages
| null | null | null |
gr-qc
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We define the Born group as the group of transformations that leave invariant
the line element of Minkowski's spacetime written in terms of Fermi coordinates
of a Born congruence. This group depends on three arbitrary functions of a
single argument. We construct implicitly the finite transformations of this
group and explicitly the corresponding infinitesimal ones. Our analysis of this
group brings out the new concept of Generalized group of isometries. The
limitting cases of such groups being, at one end, the Groups of isometries of a
spacetime metric and, at the other end, the Group of diffeomorphisms of any
spacetime manifold. We mention two examples of potentially interesting
generalizations of the Born congruences.
|
[{'version': 'v1', 'created': 'Sun, 13 Mar 2011 10:53:30 GMT'}]
|
2011-03-15
|
[array(['Bel', 'Ll.', ''], dtype=object)]
|
4,227 |
2208.11232
|
Pooria Dehghanian
|
Jessica L. Wert, Pooria Dehghanian, Jonathan Snodgrass, Thomas J.
Overbye
|
The Effects of Correctly Modeling Generator Step-Up Transformer Status
in Geomagnetic Disturbance Studies
|
Presented at the 2022 North American Power Symposium (NAPS), Salt
Lake City, UT, October 2022
| null | null | null |
eess.SY cs.SY
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In order to correctly model the impacts of geomagnetically induced current
(GIC) flows, the generator step-up (GSU) transformer status must be properly
modeled. In power flow studies, generators are typically removed from service
without disconnecting their GSU transformers since the GSU transformer status
has little to no impact on the power flow result. In reality, removing a
generator from service involves also removing its GSU transformer from service.
This difference presents a discrepancy between simulated behavior and system
observations during geomagnetic disturbance (GMD) events. This paper presents
GMD case studies on 2000-bus and 24,000-bus systems in which reactive power
losses and geomagnetically induced currents are compared across scenarios in
which the GSU transformers for the disconnected generators are either
in-service or out-of-service. The results demonstrate a 3.2 to 15.5 percent
error in reactive power losses when the GSU status is modeled incorrectly.
Discrepancies of up to 95 A per phase for branch GIC flows and 450 A for
transformer neutral GIC flows are also observed and visualized.
|
[{'version': 'v1', 'created': 'Tue, 23 Aug 2022 23:39:06 GMT'}]
|
2022-08-25
|
[array(['Wert', 'Jessica L.', ''], dtype=object)
array(['Dehghanian', 'Pooria', ''], dtype=object)
array(['Snodgrass', 'Jonathan', ''], dtype=object)
array(['Overbye', 'Thomas J.', ''], dtype=object)]
|
4,228 |
1806.05579
|
Kathrin Glau Dr.
|
Kathrin Glau, Mirco Mahlstedt, Christian P\"otz
|
A new approach for American option pricing: The Dynamic Chebyshev method
| null | null | null | null |
q-fin.CP
|
http://creativecommons.org/licenses/by/4.0/
|
We introduce a new method to price American options based on Chebyshev
interpolation. In each step of a dynamic programming time-stepping we
approximate the value function with Chebyshev polynomials. The key advantage of
this approach is that it allows to shift the model-dependent computations into
an offline phase prior to the time-stepping. In the offline part a family of
generalised (conditional) moments is computed by an appropriate numerical
technique such as a Monte Carlo, PDE or Fourier transform based method. Thanks
to this methodological flexibility the approach applies to a large variety of
models. Online, the backward induction is solved on a discrete Chebyshev grid,
and no (conditional) expectations need to be computed. For each time step the
method delivers a closed form approximation of the price function along with
the options' delta and gamma. Moreover, the same family of (conditional)
moments yield multiple outputs including the option prices for different
strikes, maturities and different payoff profiles. We provide a theoretical
error analysis and find conditions that imply explicit error bounds for a
variety of stock price models. Numerical experiments confirm the fast
convergence of prices and sensitivities. An empirical investigation of accuracy
and runtime also shows an efficiency gain compared with the least-square
Monte-Carlo method introduced by Longstaff and Schwartz (2001).
|
[{'version': 'v1', 'created': 'Thu, 14 Jun 2018 14:37:34 GMT'}]
|
2018-06-15
|
[array(['Glau', 'Kathrin', ''], dtype=object)
array(['Mahlstedt', 'Mirco', ''], dtype=object)
array(['Pötz', 'Christian', ''], dtype=object)]
|
4,229 |
1204.0357
|
Stefan Bauer
|
Stefan Bauer (1), Lutz-P. Nolte (1), Mauricio Reyes (1) ((1) Institute
for Surgical Technology and Biomechanics, University of Bern, Switzerland)
|
Skull-stripping for Tumor-bearing Brain Images
|
Swiss Society of Biomedical Engineering, Annual Meeting 2011, Bern,
Switzerland
| null | null | null |
cs.CV cs.CE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Skull-stripping separates the skull region of the head from the soft brain
tissues. In many cases of brain image analysis, this is an essential
preprocessing step in order to improve the final result. This is true for both
registration and segmentation tasks. In fact, skull-stripping of magnetic
resonance images (MRI) is a well-studied problem with numerous publications in
recent years. Many different algorithms have been proposed, a summary and
comparison of which can be found in [Fennema-Notestine, 2006]. Despite the
abundance of approaches, we discovered that the algorithms which had been
suggested so far, perform poorly when dealing with tumor-bearing brain images.
This is mostly due to additional difficulties in separating the brain from the
skull in this case, especially when the lesion is located very close to the
skull border. Additionally, images acquired according to standard clinical
protocols, often exhibit anisotropic resolution and only partial coverage,
which further complicates the task. Therefore, we developed a method which is
dedicated to skull-stripping for clinically acquired tumor-bearing brain
images.
|
[{'version': 'v1', 'created': 'Mon, 2 Apr 2012 09:48:12 GMT'}]
|
2012-04-03
|
[array(['Bauer', 'Stefan', ''], dtype=object)
array(['Nolte', 'Lutz-P.', ''], dtype=object)
array(['Reyes', 'Mauricio', ''], dtype=object)]
|
4,230 |
2111.02410
|
Raghav Govind Jha
|
Raghav G. Jha
|
Introduction to Monte Carlo for Matrix Models
|
v2: Added some more text and references, 55 pages, 63 references, 15
figures. All else same as v1. To be published in SciPost Physics Lecture
Notes. v1: 52 pages with a few Mathematica codes, 3 Python codes, 5 tables,
10 exercises, 14 figures, and 52 references
|
SciPost Phys. Lect. Notes 46 (2022)
|
10.21468/SciPostPhysLectNotes.46
| null |
hep-th hep-lat physics.comp-ph
|
http://creativecommons.org/licenses/by/4.0/
|
We consider a wide range of matrix models and study them using the Monte
Carlo technique in the large $N$ limit. The results we obtain agree with exact
analytic expressions and recent numerical bootstrap methods for models with one
and two matrices. We then present new results for several unsolved multi-matrix
models where no other tool is yet available. In order to encourage an exchange
of ideas between different numerical approaches to matrix models, we provide
programs in Python that can be easily modified to study potentials other than
the ones discussed. These programs were tested on a laptop and took between a
few minutes to several hours to finish depending on the model, $N$, and the
required precision.
|
[{'version': 'v1', 'created': 'Wed, 3 Nov 2021 18:00:00 GMT'}
{'version': 'v2', 'created': 'Fri, 25 Mar 2022 17:52:36 GMT'}]
|
2022-04-05
|
[array(['Jha', 'Raghav G.', ''], dtype=object)]
|
4,231 |
1311.1290
|
Huidong Kim
|
Huidong Kim, Hyok Sang Han, and D. Cho
|
Magic polarization for optical trapping of atoms without Stark-induced
dephasing
| null | null |
10.1103/PhysRevLett.111.243004
| null |
physics.atom-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We demonstrate that the differential ac-Stark shift of a ground-state
hyperfine transition in an optical trap can be eliminated by using properly
polarized trapping light. We use the vector polarizability of an alkali-metal
atom to produce a polarization-dependent ac-Stark shift that resembles a Zeeman
shift. We study a transition from the |2S1/2,F=2,mF=-2> to the
|2S1/2,F=1,mF=-1> state of 7Li to observe 0.59+-0.02 Hz linewidth with
interrogation time of 2 s and 0.82+-0.06 s coherence time of a superposition
state. Implications of the narrow linewidth and the long coherence time for
precision spectroscopy and quantum information processing using atoms in an
optical lattice are discussed.
|
[{'version': 'v1', 'created': 'Wed, 6 Nov 2013 05:35:25 GMT'}]
|
2015-06-17
|
[array(['Kim', 'Huidong', ''], dtype=object)
array(['Han', 'Hyok Sang', ''], dtype=object)
array(['Cho', 'D.', ''], dtype=object)]
|
4,232 |
1702.03505
|
Takashi Matsubara
|
Ryo Takahashi, Takashi Matsubara, and Kuniaki Uehara
|
A Novel Weight-Shared Multi-Stage CNN for Scale Robustness
|
accepted version, 13 pages
|
IEEE Transactions on Circuits and Systems for Video Technology,
vol. 29, no. 4, 2019, pp. 1090-1101
|
10.1109/TCSVT.2018.2822773
| null |
cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Convolutional neural networks (CNNs) have demonstrated remarkable results in
image classification for benchmark tasks and practical applications. The CNNs
with deeper architectures have achieved even higher performance recently thanks
to their robustness to the parallel shift of objects in images as well as their
numerous parameters and the resulting high expression ability. However, CNNs
have a limited robustness to other geometric transformations such as scaling
and rotation. This limits the performance improvement of the deep CNNs, but
there is no established solution. This study focuses on scale transformation
and proposes a network architecture called the weight-shared multi-stage
network (WSMS-Net), which consists of multiple stages of CNNs. The proposed
WSMS-Net is easily combined with existing deep CNNs such as ResNet and DenseNet
and enables them to acquire robustness to object scaling. Experimental results
on the CIFAR-10, CIFAR-100, and ImageNet datasets demonstrate that existing
deep CNNs combined with the proposed WSMS-Net achieve higher accuracies for
image classification tasks with only a minor increase in the number of
parameters and computation time.
|
[{'version': 'v1', 'created': 'Sun, 12 Feb 2017 08:29:53 GMT'}
{'version': 'v2', 'created': 'Wed, 8 Mar 2017 02:31:51 GMT'}
{'version': 'v3', 'created': 'Fri, 12 Apr 2019 02:44:54 GMT'}]
|
2019-04-15
|
[array(['Takahashi', 'Ryo', ''], dtype=object)
array(['Matsubara', 'Takashi', ''], dtype=object)
array(['Uehara', 'Kuniaki', ''], dtype=object)]
|
4,233 |
physics/0605215
|
Morris L. Swartz
|
M. Swartz (1), V. Chiochia (2), Y. Allkofer (2), C. Amsler (2), D.
Bortoletto (3), L. Cremaldi (4), S. Cucciarelli (5), A. Dorokhov (2,6), C.
Hoermann (2,6), D. Kim (1), M. Konecki (5), D. Kotlinski (6), K. Prokofiev
(2,6), C. Regenfus (2), T. Rohe (6), D. A. Sanders (4), S. Son (3), T. Speer
(2) ((1) Johns Hopkins University, (2) Physik Institut der Universitaet
Zuerich-Irchel, (3) Purdue University, (4) University of Mississippi, (5)
Institut fuer Physik der Universitaet Basel, (6) Paul Scherrer Institut)
|
Simulation of Heavily Irradiated Silicon Pixel Detectors
|
Invited talk at International Symposium on the Development of
Detectors for Particle, AstroParticle and Synchrtron Radiation Experiments,
Stanford Ca (SNIC06) 8 pages, LaTeX, 11 eps figures
|
ECONF C0604032:0014,2006
| null | null |
physics.ins-det
| null |
We show that doubly peaked electric fields are necessary to describe
grazing-angle charge collection measurements of irradiated silicon pixel
sensors. A model of irradiated silicon based upon two defect levels with
opposite charge states and the trapping of charge carriers can be tuned to
produce a good description of the measured charge collection profiles in the
fluence range from 0.5x10^{14} Neq/cm^2 to 5.9x10^{14} Neq/cm^2. The model
correctly predicts the variation in the profiles as the temperature is changed
from -10C to -25C. The measured charge collection profiles are inconsistent
with the linearly-varying electric fields predicted by the usual description
based upon a uniform effective doping density. This observation calls into
question the practice of using effective doping densities to characterize
irradiated silicon. The model is now being used to calibrate pixel hit
reconstruction algorithms for CMS.
|
[{'version': 'v1', 'created': 'Wed, 24 May 2006 19:35:25 GMT'}]
|
2010-01-28
|
[array(['Swartz', 'M.', ''], dtype=object)
array(['Chiochia', 'V.', ''], dtype=object)
array(['Allkofer', 'Y.', ''], dtype=object)
array(['Amsler', 'C.', ''], dtype=object)
array(['Bortoletto', 'D.', ''], dtype=object)
array(['Cremaldi', 'L.', ''], dtype=object)
array(['Cucciarelli', 'S.', ''], dtype=object)
array(['Dorokhov', 'A.', ''], dtype=object)
array(['Hoermann', 'C.', ''], dtype=object)
array(['Kim', 'D.', ''], dtype=object)
array(['Konecki', 'M.', ''], dtype=object)
array(['Kotlinski', 'D.', ''], dtype=object)
array(['Prokofiev', 'K.', ''], dtype=object)
array(['Regenfus', 'C.', ''], dtype=object)
array(['Rohe', 'T.', ''], dtype=object)
array(['Sanders', 'D. A.', ''], dtype=object)
array(['Son', 'S.', ''], dtype=object)
array(['Speer', 'T.', ''], dtype=object)]
|
4,234 |
2209.11572
|
Xiang Fang
|
Xiang Fang, Daizong Liu, Pan Zhou, Yuchong Hu
|
Multi-Modal Cross-Domain Alignment Network for Video Moment Retrieval
|
Accepted by IEEE Transactions on Multimedia
| null | null | null |
cs.CV cs.AI cs.IR cs.MM
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
As an increasingly popular task in multimedia information retrieval, video
moment retrieval (VMR) aims to localize the target moment from an untrimmed
video according to a given language query. Most previous methods depend heavily
on numerous manual annotations (i.e., moment boundaries), which are extremely
expensive to acquire in practice. In addition, due to the domain gap between
different datasets, directly applying these pre-trained models to an unseen
domain leads to a significant performance drop. In this paper, we focus on a
novel task: cross-domain VMR, where fully-annotated datasets are available in
one domain (``source domain''), but the domain of interest (``target domain'')
only contains unannotated datasets. As far as we know, we present the first
study on cross-domain VMR. To address this new task, we propose a novel
Multi-Modal Cross-Domain Alignment (MMCDA) network to transfer the annotation
knowledge from the source domain to the target domain. However, due to the
domain discrepancy between the source and target domains and the semantic gap
between videos and queries, directly applying trained models to the target
domain generally leads to a performance drop. To solve this problem, we develop
three novel modules: (i) a domain alignment module is designed to align the
feature distributions between different domains of each modality; (ii) a
cross-modal alignment module aims to map both video and query features into a
joint embedding space and to align the feature distributions between different
modalities in the target domain; (iii) a specific alignment module tries to
obtain the fine-grained similarity between a specific frame and the given query
for optimal localization. By jointly training these three modules, our MMCDA
can learn domain-invariant and semantic-aligned cross-modal representations.
|
[{'version': 'v1', 'created': 'Fri, 23 Sep 2022 12:58:20 GMT'}
{'version': 'v2', 'created': 'Tue, 15 Nov 2022 13:43:47 GMT'}]
|
2022-11-16
|
[array(['Fang', 'Xiang', ''], dtype=object)
array(['Liu', 'Daizong', ''], dtype=object)
array(['Zhou', 'Pan', ''], dtype=object)
array(['Hu', 'Yuchong', ''], dtype=object)]
|
4,235 |
2305.09707
|
Pardyumn Kumar Sahoo
|
Sai Swagat Mishra, Sanjay Mandal, P.K. Sahoo
|
Constraining $f(T,\mathcal{T})$ Gravity with Gravitational Baryogenesis
|
PLB published version
|
Physics Letters B, 842 (2023) 137959
|
10.1016/j.physletb.2023.137959
| null |
gr-qc hep-th
|
http://creativecommons.org/licenses/by/4.0/
|
Gravitational baryogenesis is one of the mechanisms which help us to explore
more about our early universe, especially baryon-anti-baryon asymmetry. As we
know, modified theories of gravity are very successful in describing the
present accelerated scenario of the universe. Therefore, in this letter, we aim
to constrain the generalized torsion-based modified theory of gravity, namely,
$f(T,\mathcal{T})$ gravity with gravitational baryogenesis, where $T$,
$\mathcal{T}$ are the torsion scalar, trace of the energy-momentum tensor,
respectively. For this, we examine how the various Lagrangian forms of
$f(T,\mathcal{T})$ affect the baryogenesis. We also impose the constraints on
the extra degrees of freedom induced by modified theory with the observational
values of the baryon-to-entropy ratio. In addition, we further explore how more
generalized gravitational baryogenesis can attribute in a physically viable and
consistent way to the cosmologies of the modified theory of gravity.
|
[{'version': 'v1', 'created': 'Tue, 16 May 2023 15:45:44 GMT'}]
|
2023-05-23
|
[array(['Mishra', 'Sai Swagat', ''], dtype=object)
array(['Mandal', 'Sanjay', ''], dtype=object)
array(['Sahoo', 'P. K.', ''], dtype=object)]
|
4,236 |
1506.00551
|
Asger Gr{\o}nnow
|
Asger Gr{\o}nnow, Kristian Finlator, Lise Christensen
|
Merging galaxies produce outliers from the Fundamental Metallicity
Relation
|
14 pages, 10 figures, published in MNRAS, updated to be essentially
identical to the published version
|
2015, MNRAS, 451, 4005
|
10.1093/mnras/stv1232
| null |
astro-ph.GA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
From a large sample of $\approx 170,000$ local SDSS galaxies, we find that
the Fundamental Metallicity Relation (FMR) has an overabundance of outliers,
compared to what would be expected from a Gaussian distribution of residuals,
with significantly lower metallicities than predicted from their stellar mass
and star formation rate (SFR). This low-metallicity population has lower
stellar masses, bimodial specific SFRs with enhanced star formation within the
aperture and smaller half-light radii than the general sample, and is hence a
physically distinct population. We show that they are consistent with being
galaxies that are merging or have recently merged with a satellite galaxy. In
this scenario, low-metallicity gas flows in from large radii, diluting the
metallicity of star-forming regions and enhancing the specific SFR until the
inflowing gas is processed and the metallicity has recovered. We introduce a
simple model in which mergers with a mass ratio larger than a minimum dilute
the central galaxy's metallicity by an amount that is proportional to the
stellar mass ratio for a constant time, and show that it provides an excellent
fit to the distribution of FMR residuals. We find the dilution time-scale to be
$\tau=1.568_{-0.027}^{+0.029}$ Gyr, the average metallicity depression caused
by a 1:1 merger to be $\alpha=0.2480_{-0.0020}^{+0.0017}$ dex and the minimum
mass ratio merger that can be discerned from the intrinsic Gaussian scatter in
the FMR to be $\xi_\text{min}=0.2030_{-0.0095}^{+0.0127}$ (these are
statistical errors only). From this we derive that the average metallicity
depression caused by a merger with mass ratio between 1:5 and 1:1 is 0.114 dex.
|
[{'version': 'v1', 'created': 'Mon, 1 Jun 2015 16:00:50 GMT'}
{'version': 'v2', 'created': 'Sun, 1 Nov 2015 09:49:03 GMT'}]
|
2015-11-03
|
[array(['Grønnow', 'Asger', ''], dtype=object)
array(['Finlator', 'Kristian', ''], dtype=object)
array(['Christensen', 'Lise', ''], dtype=object)]
|
4,237 |
2302.06201
|
Ran Li
|
Ran Li, Conghua Liu, Kun Zhang, Jin Wang
|
Topology of the landscape and dominant kinetic path for the
thermodynamic phase transition of the charged Gauss-Bonnet AdS black holes
| null | null | null | null |
gr-qc hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study the generalized free energy of the five dimensional charged
Gauss-Bonnet AdS black holes in the grand canonical ensemble by treating the
black hole radius and the charge as the order parameters. On the two
dimensional free energy landscape, the lowest points in the basins represent
the local stable black holes and the saddle point represents the unstable black
hole. We show that black hole is the topological defect of gradient field of
the landscape. The black hole stability is determined by the topography of the
free energy landscape in terms of the basin depths and the barrier height
between the basins and is not by the topology of the gradient field. In
addition, we study the stochastic dynamics of the black hole phase transition
and obtain the dominant kinetic path for the transition on the free energy
landscape. Unlike the one dimensional landscape, the dominant kinetic path
between the small and the large black hole state does not necessarily pass
through the intermediate black hole state. Furthermore, the inhomogeneity in
diffusions can lead to the switching from the coupled cooperative process of
black hole phase transition to the decoupled sequential process, giving
different kinetic mechanisms.
|
[{'version': 'v1', 'created': 'Mon, 13 Feb 2023 09:17:34 GMT'}]
|
2023-02-14
|
[array(['Li', 'Ran', ''], dtype=object)
array(['Liu', 'Conghua', ''], dtype=object)
array(['Zhang', 'Kun', ''], dtype=object)
array(['Wang', 'Jin', ''], dtype=object)]
|
4,238 |
1205.4483
|
Chiu Man Ho
|
Paul H. Frampton, Chiu Man Ho and Thomas W. Kephart
|
Three Generations in Minimally Extended Standard Models
|
9 pages, v3: version to appear in PLB
|
Phys. Lett. B715, 275 (2012)
|
10.1016/j.physletb.2012.07.067
| null |
hep-ph hep-ex
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present a class of minimally extended standard models with the gauge group
$SU(3)_C \times SU(N)_L \times U(1)_X$ where for all $N \geq 3$, anomaly
cancelation requires three generations. At low energy, we recover the Standard
Model (SM), while at higher energies, there must exist quarks, leptons and
gauge bosons with electric charges shifted from their SM values by integer
multiples of the electron charge up to $ \pm [N/2] e$. Since the value N=5 is
the highest $N$ consistent with QCD asymptotic freedom, we elaborate on the
3-5-1 model.
|
[{'version': 'v1', 'created': 'Mon, 21 May 2012 03:51:56 GMT'}
{'version': 'v2', 'created': 'Wed, 30 May 2012 02:28:32 GMT'}
{'version': 'v3', 'created': 'Wed, 1 Aug 2012 15:48:38 GMT'}]
|
2015-06-05
|
[array(['Frampton', 'Paul H.', ''], dtype=object)
array(['Ho', 'Chiu Man', ''], dtype=object)
array(['Kephart', 'Thomas W.', ''], dtype=object)]
|
4,239 |
hep-ph/9812337
|
Oscar Vives
|
D.A. Demir (1), A. Masiero (2) and O. Vives (2), ((1) ICTP, Trieste,
(2) SISSA-ISAS and INFN, Trieste)
|
Fully Supersymmetric CP Violation in K and B Systems
|
Erratum added at the end of the paper. Additional constrains diminish
the observable effects. A complete analysis will be presented in a short
time. 6 pages, 2 eps figures
|
Phys.Rev.Lett. 82 (1999) 2447-2450
|
10.1103/PhysRevLett.82.2447
|
SISSA/EP/140/98, IC/98/228
|
hep-ph
| null |
We analyze CP violation in supersymmetric extensions of the Standard Model
with heavy scalar fermions of the first two generations. Neglecting
intergenerational mixing in the sfemion mass matrices and thus considering only
chargino, charged Higgs and W--boson diagrams we show that it is possible to
fully account for CP violation in the kaon system even in the absence of the
standard CKM phase. This opens new possibilities for large supersymmetric
contributions to CP violation in the B system.
|
[{'version': 'v1', 'created': 'Fri, 11 Dec 1998 18:19:09 GMT'}
{'version': 'v2', 'created': 'Sat, 12 Dec 1998 09:03:28 GMT'}
{'version': 'v3', 'created': 'Mon, 11 Jan 1999 15:29:06 GMT'}
{'version': 'v4', 'created': 'Thu, 10 Jun 1999 18:04:38 GMT'}]
|
2009-10-31
|
[array(['Demir', 'D. A.', ''], dtype=object)
array(['Masiero', 'A.', ''], dtype=object)
array(['Vives', 'O.', ''], dtype=object)]
|
4,240 |
2103.11017
|
Filiz Gurkan Golcuk
|
Filiz Gurkan, Llukman Cerkezi, Ozgun Cirakman, Bilge Gunsel
|
TDIOT: Target-driven Inference for Deep Video Object Tracking
| null | null |
10.1109/TIP.2021.3112010
| null |
cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Recent tracking-by-detection approaches use deep object detectors as target
detection baseline, because of their high performance on still images. For
effective video object tracking, object detection is integrated with a data
association step performed by either a custom design inference architecture or
an end-to-end joint training for tracking purpose. In this work, we adopt the
former approach and use the pre-trained Mask R-CNN deep object detector as the
baseline. We introduce a novel inference architecture placed on top of
FPN-ResNet101 backbone of Mask R-CNN to jointly perform detection and tracking,
without requiring additional training for tracking purpose. The proposed single
object tracker, TDIOT, applies an appearance similarity-based temporal matching
for data association. In order to tackle tracking discontinuities, we
incorporate a local search and matching module into the inference head layer
that exploits SiamFC for short term tracking. Moreover, in order to improve
robustness to scale changes, we introduce a scale adaptive region proposal
network that enables to search the target at an adaptively enlarged spatial
neighborhood specified by the trace of the target. In order to meet long term
tracking requirements, a low cost verification layer is incorporated into the
inference architecture to monitor presence of the target based on its LBP
histogram model. Performance evaluation on videos from VOT2016, VOT2018 and
VOT-LT2018 datasets demonstrate that TDIOT achieves higher accuracy compared to
the state-of-the-art short-term trackers while it provides comparable
performance in long term tracking.
|
[{'version': 'v1', 'created': 'Fri, 19 Mar 2021 20:45:06 GMT'}
{'version': 'v2', 'created': 'Tue, 23 Mar 2021 08:51:19 GMT'}]
|
2021-10-04
|
[array(['Gurkan', 'Filiz', ''], dtype=object)
array(['Cerkezi', 'Llukman', ''], dtype=object)
array(['Cirakman', 'Ozgun', ''], dtype=object)
array(['Gunsel', 'Bilge', ''], dtype=object)]
|
4,241 |
1910.11607
|
Pedro A. S\'anchez
|
Deniz Mostarac, Leo Vaughan, Pedro A. S\'anchez, Sofia S. Kantorovich
|
The influence of crosslinkers and magnetic particle distribution along
the filament backbone on the magnetic properties of supracolloidal linear
polymer-like chains
|
International Conference on Magnetic Fluids - ICMF 2019
| null |
10.1016/j.jmmm.2019.166029
| null |
cond-mat.soft cond-mat.mes-hall cond-mat.mtrl-sci
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Diverse polymer crosslinking techniques allow the synthesis of linear
polymer-like structures whose monomers are colloidal particles. In the case
where all or part of these colloidal particles are magnetic, one can control
the behaviour of these supracolloidal polymers, known as magnetic filaments
(MFs), by applied magnetic fields. However, the response of MFs strongly
depends on the crosslinking procedure. In the present study, we employ Langevin
dynamics simulations to investigate the influence of the type of crosslinking
and the distribution of magnetic particles within MFs on their response to an
external magnetic field. We found that if the rotation of the dipole moment of
particles is not coupled to the backbone of the filament, the impact of the
magnetic content is strongly decreased.
|
[{'version': 'v1', 'created': 'Fri, 25 Oct 2019 10:30:41 GMT'}]
|
2020-03-18
|
[array(['Mostarac', 'Deniz', ''], dtype=object)
array(['Vaughan', 'Leo', ''], dtype=object)
array(['Sánchez', 'Pedro A.', ''], dtype=object)
array(['Kantorovich', 'Sofia S.', ''], dtype=object)]
|
4,242 |
1903.02623
|
Albert Cohen
|
Julien Proy, Karine Heydemann, Fabien Maj\'eric, Albert Cohen,
Alexandre Berzati
|
Studying EM Pulse Effects on Superscalar Microarchitectures at ISA Level
| null | null | null | null |
cs.CR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In the area of physical attacks, system-on-chip (SoC) designs have not
received the same level of attention as simpler micro-controllers. We try to
model the behavior of secure software running on a superscalar out-of-order
microprocessor typical of more complex SoC, in the presence of electromagnetic
(EM) pulses. We first show that it is possible, in a black box approach, to
corrupt the loop iteration count of both original and hardened versions of two
sensitive loops. We propose a characterization methodology based on very simple
codes, to understand and classify the fault effects at the level of the
instruction set architecture (ISA). The resulting classification includes the
well established instruction skip and register corruption models, as well as
new effects specific to more complex processors, such as operand substitution,
multiple correlated register corruptions, advanced control-flow hijacking, and
combinations of all reported effects. This diversity and complexity of effects
can lead to powerful attacks. The proposed methodology and fault classification
at ISA level is a first step towards a more complete characterization. It is
also a tool supporting the designers of software and hardware countermeasures.
|
[{'version': 'v1', 'created': 'Wed, 6 Mar 2019 21:37:31 GMT'}]
|
2019-03-08
|
[array(['Proy', 'Julien', ''], dtype=object)
array(['Heydemann', 'Karine', ''], dtype=object)
array(['Majéric', 'Fabien', ''], dtype=object)
array(['Cohen', 'Albert', ''], dtype=object)
array(['Berzati', 'Alexandre', ''], dtype=object)]
|
4,243 |
gr-qc/0406088
|
Roman Werpachowski
|
Jerzy Kijowski and Roman Werpachowski
|
Universality of affine formulation in General Relativity theory
|
38 pages, no figures, LaTeX+BibTex, corrected (restructured contents,
one example removed, no additional results, typos fixed) version
|
Rept.Math.Phys.59:1,2007
|
10.1016/S0034-4877(07)80001-2
| null |
gr-qc
| null |
Affine variational principle for General Relativity, proposed in 1978 by one
of us (J.K.), is a good remedy for the non-universal properties of the
standard, metric formulation, arising when the matter Lagrangian depends upon
the metric derivatives. Affine version of the theory cures the standard
drawback of the metric version, where the leading (second order) term of the
field equations depends upon matter fields and its causal structure violates
the light cone structure of the metric. Choosing the affine connection (and not
the metric one) as the gravitational configuration, simplifies considerably the
canonical structure of the theory and is more suitable for purposes of its
quantization along the lines of Ashtekar and Lewandowski (see
http://www.arxiv.org/gr-qc/0404018). We show how the affine formulation
provides a simple method to handle boundary integrals in general relativity
theory.
|
[{'version': 'v1', 'created': 'Tue, 22 Jun 2004 09:56:30 GMT'}
{'version': 'v2', 'created': 'Fri, 29 Apr 2005 12:38:58 GMT'}
{'version': 'v3', 'created': 'Fri, 5 Jan 2007 19:37:00 GMT'}
{'version': 'v4', 'created': 'Mon, 29 Jan 2007 11:15:41 GMT'}]
|
2008-11-26
|
[array(['Kijowski', 'Jerzy', ''], dtype=object)
array(['Werpachowski', 'Roman', ''], dtype=object)]
|
4,244 |
2305.04389
|
Mathias Braun
|
Mathias Braun, Shin-ichi Ohta
|
Optimal transport and timelike lower Ricci curvature bounds on Finsler
spacetimes
|
56 pages. Comments welcome
| null | null | null |
math.DG gr-qc math.MG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We prove that a Finsler spacetime endowed with a smooth reference measure
whose induced weighted Ricci curvature $\smash{\mathrm{Ric}_N}$ is bounded from
below by a real number $K$ in every timelike direction satisfies the timelike
curvature-dimension condition $\smash{\mathrm{TCD}_q(K,N)}$ for all $q\in
(0,1)$. A nonpositive-dimensional version ($N \le 0$) of this result is also
shown. Our discussion is based on the solvability of the Monge problem with
respect to the $q$-Lorentz-Wasserstein distance as well as the characterization
of $q$-geodesics of probability measures. One consequence of our work is the
sharp timelike Brunn-Minkowski inequality in the Lorentz-Finsler case.
|
[{'version': 'v1', 'created': 'Sun, 7 May 2023 22:46:03 GMT'}]
|
2023-05-09
|
[array(['Braun', 'Mathias', ''], dtype=object)
array(['Ohta', 'Shin-ichi', ''], dtype=object)]
|
4,245 |
math/0303325
|
Saharon Shelah's Office
|
Saharon Shelah and Alex Usvyatsov
|
Banach spaces and groups - order properties and universal models
| null | null | null |
Shelah [ShUs:789]
|
math.LO
| null |
We deal with two natural examples of almost-elementary classes: the class of
all Banach spaces (over R or C) and the class of all groups. We show both of
these classes do not have the strict order property, and find the exact place
of each one of them in Shelah's SOP_n (strong order property of order n)
hierarchy. Remembering the connection between this hierarchy and the existence
of universal models, we conclude, for example, that there are ``few'' universal
Banach spaces (under isometry) of regular cardinalities.
|
[{'version': 'v1', 'created': 'Wed, 26 Mar 2003 05:28:31 GMT'}]
|
2007-05-23
|
[array(['Shelah', 'Saharon', ''], dtype=object)
array(['Usvyatsov', 'Alex', ''], dtype=object)]
|
4,246 |
2011.06361
|
Jonas Pereira
|
Jonas P. Pereira, Micha{\l} Bejger, Lucas Tonetto, Germ\'an Lugones,
Pawe{\l} Haensel, Julian Leszek Zdunik, Magdalena Sieniawska
|
Probing elastic quark phases in hybrid stars with radius measurements
|
15 pages, 2 figures. New discussions (EOS uncertainties) inserted.
Accepted for publication in ApJ
| null |
10.3847/1538-4357/abe633
| null |
astro-ph.HE gr-qc
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The internal composition of neutron stars is currently largely unknown. Due
to the possibility of phase transitions in quantum chromodynamics, stars could
be hybrid and have quark cores. We investigate some imprints of elastic quark
phases (only when perturbed) on the dynamical stability of hybrid stars. We
show that they increase the dynamical stability window of hybrid stars in the
sense that the onset of instabilities happen at larger central densities than
the ones for maximum masses. In particular, when the shear modulus of a
crystalline quark phase is taken at face value, the relative radius differences
between elastic and perfect-fluid hybrid stars with null radial frequencies
(onset of instability) would be up to $1-2\%$. Roughly, this would imply a
maximum relative radius dispersion (on top of the perfect-fluid predictions) of
$2-4\%$ for stars in a given mass range exclusively due to the elasticity of
the quark phase. In the more agnostic approach where the estimates for the
quark shear modulus only suggest its possible order of magnitude (due to the
many approximations taken in its calculation), the relative radius dispersion
uniquely due to a quark phase elasticity might be as large as $5-10\%$.
Finally, we discuss possible implications of the above dispersion of radii for
the constraint of the elasticity of a quark phase with electromagnetic missions
such as NICER, eXTP and ATHENA.
|
[{'version': 'v1', 'created': 'Thu, 12 Nov 2020 13:19:17 GMT'}
{'version': 'v2', 'created': 'Mon, 15 Feb 2021 15:43:17 GMT'}]
|
2021-04-14
|
[array(['Pereira', 'Jonas P.', ''], dtype=object)
array(['Bejger', 'Michał', ''], dtype=object)
array(['Tonetto', 'Lucas', ''], dtype=object)
array(['Lugones', 'Germán', ''], dtype=object)
array(['Haensel', 'Paweł', ''], dtype=object)
array(['Zdunik', 'Julian Leszek', ''], dtype=object)
array(['Sieniawska', 'Magdalena', ''], dtype=object)]
|
4,247 |
2002.01772
|
Stephan Stock
|
S.Stock, J.Kemmer, S.Reffert, T.Trifonov, A.Kaminski, S.Dreizler,
A.Quirrenbach, J.A.Caballero, A.Reiners, S.V.Jeffers, G.Anglada-Escud\'e,
I.Ribas, P.J.Amado, D.Barrado, J.R.Barnes, F.F.Bauer, Z.M.Berdi\~nas,
V.J.S.B\'ejar, G.A.L.Coleman, M.Cort\'es-Contreras, E.D\'iez-Alonso,
A.J.Dom\'inguez-Fern\'andez, N.Espinoza, C.A.Haswell, A.Hatzes, T.Henning,
J.S.Jenkins, H.R.A.Jones, D.Kossakowski, M.K\"urster, M.Lafarga, M.H.Lee,
M.J. L\'opez Gonz\'alez, D.Montes, J.C.Morales, N.Morales, E.Pall\'e,
S.Pedraz, E. Rodr\'i guez, C.Rodr\'iguez-L\'opez, M.Zechmeister
|
The CARMENES search for exoplanets around M dwarfs. Characterization of
the nearby ultra-compact multiplanetary system YZ Ceti
|
Accepted for publication in A&A
|
A&A 636, A119 (2020)
|
10.1051/0004-6361/201936732
| null |
astro-ph.EP astro-ph.IM astro-ph.SR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The nearby ultra-compact multiplanetary system YZ Ceti consists of at least
three planets. The orbital period of each planet is the subject of discussion
in the literature due to strong aliasing in the radial velocity data. The
stellar activity of this M dwarf also hampers significantly the derivation of
the planetary parameters. With an additional 229 radial velocity measurements
obtained since the discovery publication, we reanalyze the YZ Ceti system and
resolve the alias issues. We use model comparison in the framework of Bayesian
statistics and periodogram simulations based on a method by Dawson and Fabrycky
to resolve the aliases. We discuss additional signals in the RV data, and
derive the planetary parameters by simultaneously modeling the stellar activity
with a Gaussian process regression model. To constrain the planetary parameters
further we apply a stability analysis on our ensemble of Keplerian fits. We
resolve the aliases: the three planets orbit the star with periods of $2.02$ d,
$3.06$ d, and $4.66$ d. We also investigate an effect of the stellar rotational
signal on the derivation of the planetary parameters, in particular the
eccentricity of the innermost planet. Using photometry we determine the stellar
rotational period to be close to $68$ d. From the absence of a transit event
with TESS, we derive an upper limit of the inclination of $i_\mathrm{max} =
87.43$ deg. YZ Ceti is a prime example of a system where strong aliasing
hindered the determination of the orbital periods of exoplanets. Additionally,
stellar activity influences the derivation of planetary parameters and modeling
them correctly is important for the reliable estimation of the orbital
parameters in this specific compact system. Stability considerations then allow
additional constraints to be placed on the planetary parameters.
|
[{'version': 'v1', 'created': 'Wed, 5 Feb 2020 13:10:36 GMT'}]
|
2020-05-06
|
[array(['Stock', 'S.', ''], dtype=object)
array(['Kemmer', 'J.', ''], dtype=object)
array(['Reffert', 'S.', ''], dtype=object)
array(['Trifonov', 'T.', ''], dtype=object)
array(['Kaminski', 'A.', ''], dtype=object)
array(['Dreizler', 'S.', ''], dtype=object)
array(['Quirrenbach', 'A.', ''], dtype=object)
array(['Caballero', 'J. A.', ''], dtype=object)
array(['Reiners', 'A.', ''], dtype=object)
array(['Jeffers', 'S. V.', ''], dtype=object)
array(['Anglada-Escudé', 'G.', ''], dtype=object)
array(['Ribas', 'I.', ''], dtype=object)
array(['Amado', 'P. J.', ''], dtype=object)
array(['Barrado', 'D.', ''], dtype=object)
array(['Barnes', 'J. R.', ''], dtype=object)
array(['Bauer', 'F. F.', ''], dtype=object)
array(['Berdiñas', 'Z. M.', ''], dtype=object)
array(['Béjar', 'V. J. S.', ''], dtype=object)
array(['Coleman', 'G. A. L.', ''], dtype=object)
array(['Cortés-Contreras', 'M.', ''], dtype=object)
array(['Díez-Alonso', 'E.', ''], dtype=object)
array(['Domínguez-Fernández', 'A. J.', ''], dtype=object)
array(['Espinoza', 'N.', ''], dtype=object)
array(['Haswell', 'C. A.', ''], dtype=object)
array(['Hatzes', 'A.', ''], dtype=object)
array(['Henning', 'T.', ''], dtype=object)
array(['Jenkins', 'J. S.', ''], dtype=object)
array(['Jones', 'H. R. A.', ''], dtype=object)
array(['Kossakowski', 'D.', ''], dtype=object)
array(['Kürster', 'M.', ''], dtype=object)
array(['Lafarga', 'M.', ''], dtype=object)
array(['Lee', 'M. H.', ''], dtype=object)
array(['González', 'M. J. López', ''], dtype=object)
array(['Montes', 'D.', ''], dtype=object)
array(['Morales', 'J. C.', ''], dtype=object)
array(['Morales', 'N.', ''], dtype=object)
array(['Pallé', 'E.', ''], dtype=object)
array(['Pedraz', 'S.', ''], dtype=object)
array(['guez', 'E. Rodrí', ''], dtype=object)
array(['Rodríguez-López', 'C.', ''], dtype=object)
array(['Zechmeister', 'M.', ''], dtype=object)]
|
4,248 |
1809.03451
|
Hanqing Wang
|
Hanqing Wang, Jiaolong Yang, Wei Liang, Xin Tong
|
Deep Single-View 3D Object Reconstruction with Visual Hull Embedding
|
11 pages
| null | null | null |
cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
3D object reconstruction is a fundamental task of many robotics and AI
problems. With the aid of deep convolutional neural networks (CNNs), 3D object
reconstruction has witnessed a significant progress in recent years. However,
possibly due to the prohibitively high dimension of the 3D object space, the
results from deep CNNs are often prone to missing some shape details. In this
paper, we present an approach which aims to preserve more shape details and
improve the reconstruction quality. The key idea of our method is to leverage
object mask and pose estimation from CNNs to assist the 3D shape learning by
constructing a probabilistic single-view visual hull inside of the network. Our
method works by first predicting a coarse shape as well as the object pose and
silhouette using CNNs, followed by a novel 3D refinement CNN which refines the
coarse shapes using the constructed probabilistic visual hulls. Experiment on
both synthetic data and real images show that embedding a single-view visual
hull for shape refinement can significantly improve the reconstruction quality
by recovering more shapes details and improving shape consistency with the
input image.
|
[{'version': 'v1', 'created': 'Mon, 10 Sep 2018 16:49:36 GMT'}]
|
2018-09-11
|
[array(['Wang', 'Hanqing', ''], dtype=object)
array(['Yang', 'Jiaolong', ''], dtype=object)
array(['Liang', 'Wei', ''], dtype=object)
array(['Tong', 'Xin', ''], dtype=object)]
|
4,249 |
2105.14632
|
A. S. Lemos
|
A. S. Lemos
|
Submillimeter constraints for non-Newtonian gravity from spectroscopy
|
14 pages, 3 figures, version published in EPL
|
EPL 135 (2021) 11001
|
10.1209/0295-5075/135/11001
| null |
gr-qc
|
http://creativecommons.org/licenses/by/4.0/
|
In this work, we consider the Yukawa-type and power-type non-Newtonian
corrections, which induce amplification of gravitational interaction on
submillimeter scales, and analytically calculate deviations produced by the
atomic gravitational field on the energy levels of hydrogen-like ions.
Analyzing ionic transitions between Rydberg states, we derive prospective
constraints for non-Newtonian corrections. It is shown that the results also
provide stronger constraints, due to the high accuracy for Rydberg transition
measures into optical spectrum frequency range, than the current empirical
bounds following from Casimir force measurements.
|
[{'version': 'v1', 'created': 'Sun, 30 May 2021 21:50:54 GMT'}
{'version': 'v2', 'created': 'Mon, 27 Sep 2021 18:13:12 GMT'}]
|
2021-09-29
|
[array(['Lemos', 'A. S.', ''], dtype=object)]
|
4,250 |
math/0610821
|
Patrick McDonald
|
Victor de la Pena, Henryk Gzyl and Patrick McDonald
|
Inverse problems for random walks on trees: network tomography
|
11 pages, 1 figure
| null | null | null |
math.PR
| null |
Let $G$ be a finite tree with root $r$ and associate to the internal vertices
of $G$ a collection of transition probabilities for a simple nondegenerate
Markov chain. Embedd $G$ into a graph $G^\prime$ constructed by gluing finite
linear chains of length at least 2 to the terminal vertices of $G.$ Then
$G^\prime$ admits distinguished boundary layers and the transition
probabilities associated to the internal vertices of $G$ can be augmented to
define a simple nondegenerate Markov chain $X$ on the vertices of $G^\prime.$
We show that the transition probabilities of $X$ can be recovered from the
joint distribution of first hitting time and first hitting place of $X$ started
at the root $r$ for the distinguished boundary layers of $G^\prime.$
|
[{'version': 'v1', 'created': 'Fri, 27 Oct 2006 02:43:04 GMT'}]
|
2007-05-23
|
[array(['de la Pena', 'Victor', ''], dtype=object)
array(['Gzyl', 'Henryk', ''], dtype=object)
array(['McDonald', 'Patrick', ''], dtype=object)]
|
4,251 |
astro-ph/0504425
|
Bing Zhang
|
Bing Zhang (UNLV) & Shiho Kobayashi (PSU)
|
Reply to Lyutikov's comments on Zhang & Kobayashi (2005)
|
4 pages
| null | null | null |
astro-ph
| null |
Lyutikov (astro-ph/0503505) raised a valid point that for shock deceleration
of a highly magnetized outflow, the fate of the magnetic fields after shock
crossing should be considered. However, his comment that the deceleration
radius should be defined by the total energy rather than by the baryonic
kinetic energy is incorrect. As strictly derived from the shock jump conditions
in Zhang & Kobayashi (2005), during the reverse shock crossing process the
magnetic energy is not tapped. As a result, the fireball deceleration radius is
defined by the baryonic energy only. The magnetic energy is expected to be
transferred to the circumburst medium after the reverse shock disappears. The
evolution of the system then mimicks a continuously-fed fireball. As a result,
Lyutikov's naive conclusion that the forward shock dynamics is independent on
the ejecta content is also incorrect. The shock deceleration dynamics and the
reverse shock calculation presented in Zhang & Kobayashi (2005) are robust and
correct.
|
[{'version': 'v1', 'created': 'Tue, 19 Apr 2005 21:12:23 GMT'}]
|
2007-05-23
|
[array(['Zhang', 'Bing', '', 'UNLV'], dtype=object)
array(['Kobayashi', 'Shiho', '', 'PSU'], dtype=object)]
|
4,252 |
cond-mat/0603302
|
Hong-Yi Chen
|
Hong-Yi Chen, Lingyin Zhu, C. S Ting
|
Quantum interference in dirty d-wave superconductors
| null |
Phys. Rev. B 73, 172505 (2006)
|
10.1103/PhysRevB.73.172505
| null |
cond-mat.supr-con
| null |
The local differential tunneling conductance on a Zn impurity in a disordered
d-wave superconductors is studied. Quantum interference between many impurities
leads to definitive quasiparticle spectra. We suggest that an elaborate
analysis on impurity-induced spectra with quantum interference effect included
may be able to pin down the sign and strength of the scattering potential of a
Zn impurity in low density limit. Numerical simulations calculated with
appropriately determined impurity parameters are in satisfactory agreement with
the observations from scanning tunneling microscopy (STM) experiments even in
subtle details.
|
[{'version': 'v1', 'created': 'Fri, 10 Mar 2006 20:44:29 GMT'}]
|
2009-11-11
|
[array(['Chen', 'Hong-Yi', ''], dtype=object)
array(['Zhu', 'Lingyin', ''], dtype=object)
array(['Ting', 'C. S', ''], dtype=object)]
|
4,253 |
0911.5081
|
Judith G. Cohen
|
Judith G. Cohen, Andrew Gould, Ian B. Thompson, Sofia Feltzing, Thomas
Bensby, Jennifer A. Johnson, Wenjin Huang, Jorge Melendez, Sara Lucatello and
Martin Asplund
|
A Puzzle Involving Galactic Bulge Microlensing Events
|
Submitted to ApJL, table 2 (quite long) will only appear in the
on-line version of ApJL
| null |
10.1088/2041-8205/711/1/L48
| null |
astro-ph.GA astro-ph.SR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study a sample of 16 microlensed Galactic bulge main sequence turnoff
region stars for which high dispersion spectra have been obtained with detailed
abundance analyses. We demonstrate that there is a very strong and highly
statistically significant correlation between the maximum magnification of the
microlensed bulge star and the value of the [Fe/H] deduced from the high
resolution spectrum of each object. Physics demands that this correlation,
assuming it to be real, be the result of some sample bias. We suggest several
possible explanations, but are forced to reject them all,and are left puzzled.
To obtain a reliable metallicity distribution in the Galactic bulge based on
microlensed dwarf stars it will be necessary to resolve this issue through the
course of additional observations.
|
[{'version': 'v1', 'created': 'Fri, 27 Nov 2009 20:55:48 GMT'}]
|
2015-05-14
|
[array(['Cohen', 'Judith G.', ''], dtype=object)
array(['Gould', 'Andrew', ''], dtype=object)
array(['Thompson', 'Ian B.', ''], dtype=object)
array(['Feltzing', 'Sofia', ''], dtype=object)
array(['Bensby', 'Thomas', ''], dtype=object)
array(['Johnson', 'Jennifer A.', ''], dtype=object)
array(['Huang', 'Wenjin', ''], dtype=object)
array(['Melendez', 'Jorge', ''], dtype=object)
array(['Lucatello', 'Sara', ''], dtype=object)
array(['Asplund', 'Martin', ''], dtype=object)]
|
4,254 |
2002.07623
|
Sandra Schluttenhofer
|
Sandra Schluttenhofer and Jan Johannes
|
Adaptive minimax testing in inverse Gaussian sequence space models
| null | null | null | null |
math.ST stat.TH
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In the inverse Gaussian sequence space model with additional noisy
observations of the operator, we derive nonasymptotic minimax radii of testing
for ellipsoid-type alternatives simultaneously for both the signal detection
problem (testing against zero) and the goodness-of-fit testing problem (testing
against a prescribed sequence) without any regularity assumption on the null
hypothesis. The radii are the maximum of two terms, each of which only depends
on one of the noise levels. Interestingly, the term involving the noise level
of the operator explicitly depends on the null hypothesis and vanishes in the
signal detection case. The minimax radii are established by first showing a
lower bound for arbitrary null hypotheses and noise levels. For the upper bound
we consider two testing procedures, a direct test based on estimating the
energy in the image space and an indirect test. Under mild assumptions, we
prove that the testing radius of the indirect test achieves the lower bound,
which shows the minimax optimality of the radius and the test. We highlight the
assumptions under which the direct test also performs optimally. Furthermore,
we apply a classical Bonferroni method for making both the indirect and the
direct test adaptive with respect to the regularity of the alternative. The
radii of the adaptive tests are deteriorated by an additional log-factor, which
we show to be unavoidable. The results are illustrated considering Sobolev
spaces and mildly or severely ill-posed inverse problems.
|
[{'version': 'v1', 'created': 'Tue, 18 Feb 2020 15:02:06 GMT'}]
|
2020-02-19
|
[array(['Schluttenhofer', 'Sandra', ''], dtype=object)
array(['Johannes', 'Jan', ''], dtype=object)]
|
4,255 |
hep-th/0101056
|
Alex Buchel
|
Alex Buchel
|
Comments on fractional instantons in N=2 gauge theories
|
Published version (paper shortened to satisfy the requirements of
Phys. Lett. B; see v1 for original-length paper)
|
Phys.Lett. B514 (2001) 417-425
|
10.1016/S0370-2693(01)00827-9
|
NSF-ITP-01-01
|
hep-th
| null |
N=1^* gauge theories are believed to have fractional instanton contributions
in the confining vacua. D3 brane probe computations in gravitation dual of
large-N N=2^* gauge theories point to the absence of such contributions in the
low energy gauge dynamics. We study fractional instantons in N=2 SU(2)
Yang-Mills theory from the field theoretical perspective. We present new
solutions to the Seiberg-Witten SU(2) monodromy problem with the same
perturbative asymptotic, a massless monopole and a dyon singularity on the
moduli space, and fractional instanton corrections to N=2 prepotential in the
semi-classical region of the moduli space. We show that fractional instantons
lead to infinite monopole (dyon) condensate in mass deformed N=2 gauge
theories.
|
[{'version': 'v1', 'created': 'Wed, 10 Jan 2001 22:53:12 GMT'}
{'version': 'v2', 'created': 'Mon, 18 Jun 2001 21:18:46 GMT'}]
|
2009-11-07
|
[array(['Buchel', 'Alex', ''], dtype=object)]
|
4,256 |
2210.14037
|
Andreas Nugaard Holm
|
Andreas Nugaard Holm, Dustin Wright, Isabelle Augenstein
|
Revisiting Softmax for Uncertainty Approximation in Text Classification
| null | null | null | null |
cs.LG cs.CL
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Uncertainty approximation in text classification is an important area with
applications in domain adaptation and interpretability. The most widely used
uncertainty approximation method is Monte Carlo Dropout, which is
computationally expensive as it requires multiple forward passes through the
model. A cheaper alternative is to simply use a softmax to estimate model
uncertainty. However, prior work has indicated that the softmax can generate
overconfident uncertainty estimates and can thus be tricked into producing
incorrect predictions. In this paper, we perform a thorough empirical analysis
of both methods on five datasets with two base neural architectures in order to
reveal insight into the trade-offs between the two. We compare the methods'
uncertainty approximations and downstream text classification performance,
while weighing their performance against their computational complexity as a
cost-benefit analysis, by measuring runtime (cost) and the downstream
performance (benefit). We find that, while Monte Carlo produces the best
uncertainty approximations, using a simple softmax leads to competitive
uncertainty estimation for text classification at a much lower computational
cost, suggesting that softmax can in fact be a sufficient uncertainty estimate
when computational resources are a concern.
|
[{'version': 'v1', 'created': 'Tue, 25 Oct 2022 14:13:53 GMT'}]
|
2022-10-26
|
[array(['Holm', 'Andreas Nugaard', ''], dtype=object)
array(['Wright', 'Dustin', ''], dtype=object)
array(['Augenstein', 'Isabelle', ''], dtype=object)]
|
4,257 |
2010.05686
|
Fabian Stephany
|
Philipp Darius, Fabian Stephany
|
How the Far-Right Polarises Twitter: 'Highjacking' Hashtags in Times of
COVID-19
|
10 pages, 3 figures
| null | null | null |
cs.SI
|
http://creativecommons.org/licenses/by/4.0/
|
Twitter influences political debates. Phenomena like fake news and hate
speech show that political discourse on micro-blogging can become strongly
polarised by algorithmic enforcement of selective perception. Some political
actors actively employ strategies to facilitate polarisation on Twitter, as
past contributions show, via strategies of 'hashjacking'. For the example of
COVID-19 related hashtags and their retweet networks, we examine the case of
partisan accounts of the German far-right party Alternative f\"ur Deutschland
(AfD) and their potential use of 'hashjacking' in May 2020. Our findings
indicate that polarisation of political party hashtags has not changed
significantly in the last two years. We see that right-wing partisans are
actively and effectively polarising the discourse by 'hashjacking' COVID-19
related hashtags, like #CoronaVirusDE or #FlattenTheCurve. This polarisation
strategy is dominated by the activity of a limited set of heavy users. The
results underline the necessity to understand the dynamics of discourse
polarisation, as an active political communication strategy of the far-right,
by only a handful of very active accounts.
|
[{'version': 'v1', 'created': 'Mon, 12 Oct 2020 13:25:48 GMT'}]
|
2020-10-13
|
[array(['Darius', 'Philipp', ''], dtype=object)
array(['Stephany', 'Fabian', ''], dtype=object)]
|
4,258 |
1905.05825
|
Tommaso Cornelis Rosati
|
Nicolas Perkowski and Tommaso Cornelis Rosati
|
A Rough Super-Brownian Motion
|
30 Pages. This is a significantly shortened version of the original,
a part of which was migrated to the article named "Killed rough
super-Brownian motion"
| null | null | null |
math.PR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study the scaling limit of a branching random walk in static random
environment in dimension $d=1,2$ and show that it is given by a super-Brownian
motion in a white noise potential. In dimension $1$ we characterize the limit
as the unique weak solution to the stochastic PDE: \[\partial_t \mu = (\Delta
{+} \xi) \mu {+} \sqrt{2\nu \mu} \tilde{\xi}\] for independent space white
noise $\xi$ and space-time white noise $\tilde{\xi}$. In dimension $2$ the
study requires paracontrolled theory and the limit process is described via a
martingale problem. In both dimensions we prove persistence of this rough
version of the super-Brownian motion.
|
[{'version': 'v1', 'created': 'Tue, 14 May 2019 20:20:08 GMT'}
{'version': 'v2', 'created': 'Wed, 26 Jun 2019 13:00:37 GMT'}
{'version': 'v3', 'created': 'Thu, 17 Sep 2020 07:55:17 GMT'}]
|
2020-09-18
|
[array(['Perkowski', 'Nicolas', ''], dtype=object)
array(['Rosati', 'Tommaso Cornelis', ''], dtype=object)]
|
4,259 |
1907.11493
|
Maarten van Smeden
|
Ben Van Calster, Maarten van Smeden, Ewout W. Steyerberg
|
On the variability of regression shrinkage methods for clinical
prediction models: simulation study on predictive performance
|
138 pages (incl 114 supplementary pages). Main document: 5 figures
and 2 tables
| null | null | null |
stat.ME
|
http://creativecommons.org/licenses/by-nc-sa/4.0/
|
When developing risk prediction models, shrinkage methods are recommended,
especially when the sample size is limited. Several earlier studies have shown
that the shrinkage of model coefficients can reduce overfitting of the
prediction model and subsequently result in better predictive performance on
average. In this simulation study, we aimed to investigate the variability of
regression shrinkage on predictive performance for a binary outcome, with focus
on the calibration slope. The slope indicates whether risk predictions are too
extreme (slope < 1) or not extreme enough (slope > 1). We investigated the
following shrinkage methods in comparison to standard maximum likelihood
estimation: uniform shrinkage (likelihood-based and bootstrap-based), ridge
regression, penalized maximum likelihood, LASSO regression, adaptive LASSO,
non-negative garrote, and Firth's correction. There were three main findings.
First, shrinkage improved calibration slopes on average. Second, the
between-sample variability of calibration slopes was often increased relative
to maximum likelihood. Among the shrinkage methods, the bootstrap-based uniform
shrinkage worked well overall. In contrast to other shrinkage approaches,
Firth's correction had only a small shrinkage effect but did so with low
variability. Third, the correlation between the estimated shrinkage and the
optimal shrinkage to remove overfitting was typically negative. Hence, although
shrinkage improved predictions on average, it often worked poorly in individual
datasets, in particular when shrinkage was most needed. The observed
variability of shrinkage methods implies that these methods do not solve
problems associated with small sample size or low number of events per
variable.
|
[{'version': 'v1', 'created': 'Fri, 26 Jul 2019 11:29:19 GMT'}]
|
2019-07-29
|
[array(['Van Calster', 'Ben', ''], dtype=object)
array(['van Smeden', 'Maarten', ''], dtype=object)
array(['Steyerberg', 'Ewout W.', ''], dtype=object)]
|
4,260 |
1303.5914
|
Pavel Pakhlov
|
D. Gorbunov and P. Pakhlov
|
Antibaryonic dark matter
|
6 pages, 2 figures
| null | null | null |
hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Assuming existence of (very) heavy fourth generation of quarks and antiquarks
we argue that antibaryon composed of the three heavy antiquarks can be light,
stable and invisible, hence a good candidate for the Dark matter particle. Such
opportunity allows to keep the baryon number conservation for the generation of
the visible baryon asymmetry. The dark matter particles traveling through the
ordinary matter will annihilate with nucleons inducing
proton(neutron)-decay-like events with ~5GeV energy release in outcoming
particles.
|
[{'version': 'v1', 'created': 'Sun, 24 Mar 2013 05:08:54 GMT'}]
|
2013-03-26
|
[array(['Gorbunov', 'D.', ''], dtype=object)
array(['Pakhlov', 'P.', ''], dtype=object)]
|
4,261 |
1711.03843
|
Sina Khorasani
|
Sina Khorasani
|
Electromechanics of Suspended Spiral Capacitors and Inductors
| null |
Appl. Phys. Lett. 112, 031906 (2018)
|
10.1063/1.5012867
| null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Most electromechanical devices are in two-dimensional metallic drums under
high tensile stress, which causes increased mechanical frequency and quality
factor. However, high mechanical frequencies lead to small zero-point
displacements $x_{\rm zp}$, which limits the single-photon interaction rate
$g_0$. For applications which demand large $g_0$, any design with increased
$x_{\rm zp}$ is desirable. It is shown that a patterned drum by spiral shape
can resolve this difficulty, which is obtained by a reduction of mechanical
frequency while the motion mass is kept almost constant. An order of magnitude
increase in $g_0$, and agreement between simulations and interferometric
measurements is observed.
|
[{'version': 'v1', 'created': 'Thu, 9 Nov 2017 05:37:11 GMT'}
{'version': 'v2', 'created': 'Wed, 27 Dec 2017 20:24:44 GMT'}]
|
2018-01-22
|
[array(['Khorasani', 'Sina', ''], dtype=object)]
|
4,262 |
2107.06275
|
Jorinde van de Vis
|
Felix Giese, Thomas Konstandin, Jorinde van de Vis
|
Finding sound shells in LISA mock data using likelihood sampling
|
32 pages, 12 figures
|
JCAP 11 (2021) 002
|
10.1088/1475-7516/2021/11/002
|
DESY-21-109
|
astro-ph.CO hep-ph
|
http://creativecommons.org/licenses/by/4.0/
|
We study to what extend LISA can observe features of gravitational wave
spectra originating from cosmological first-order phase transitions. We focus
on spectra which are of the form of double-broken power laws. These spectra are
predicted by hydrodynamic simulations and also analytical models such as the
sound shell model. We argue that the ratio of the two break frequencies is an
interesting observable since it can be related to the wall velocity while
overall amplitude and frequency range are often degenerate for the numerous
characteristics of the phase transition. Our analysis uses mock data obtained
from the power spectra predicted by the simplified simulations and the sound
shell model and analyzes the detection prospects using $\chi^2$-minimization
and likelihood sampling. We point out that the prospects of observing two break
frequencies from the electroweak phase transition is hindered by a shift of the
spectrum to smaller frequencies for strong phase transitions. Finally, we also
highlight some differences between signals from the sound shell model compared
to simulations.
|
[{'version': 'v1', 'created': 'Tue, 13 Jul 2021 17:57:59 GMT'}
{'version': 'v2', 'created': 'Tue, 16 Nov 2021 10:29:43 GMT'}]
|
2021-12-21
|
[array(['Giese', 'Felix', ''], dtype=object)
array(['Konstandin', 'Thomas', ''], dtype=object)
array(['van de Vis', 'Jorinde', ''], dtype=object)]
|
4,263 |
astro-ph/0309044
|
Lorenzo Monaco
|
Lorenzo Monaco (1,2), Michele Bellazzini (2), Francesco R. Ferraro (1)
and Elena Pancino (2) ((1)Dip. di Astronomia, Universita' di
Bologna;(2)INAF-Osservatorio Astronomico di Bologna)
|
The Nuclear Structure of the Sagittarius Dwarf Spheroidal Galaxy
|
4 pages, 2 figures. To be published in ``Satellites and Tidal
Streams'', proceedings of the conference held in La Palma 26-30 May 2003,
Spain, eds, F. Prada,D. Martinez-Delgado, T. Mahoney
| null | null | null |
astro-ph
| null |
We present a study of the central parts of the Sagittarius dwarf spheroidal
galaxy (Sgr). We found a clear overdensity of Sgr's stars around M~54
(hereafter NS). NS is well represented by a King model and it has the
characteristics of a typical dwarf elliptical nucleus. Whether this means that
M~54 has spiraled into the potential well of NS or that M~54 is the real
nucleus and NS has formed into its potential wells, remains an open question to
be addressed.
|
[{'version': 'v1', 'created': 'Tue, 2 Sep 2003 13:19:03 GMT'}]
|
2007-05-23
|
[array(['Monaco', 'Lorenzo', ''], dtype=object)
array(['Bellazzini', 'Michele', ''], dtype=object)
array(['Ferraro', 'Francesco R.', ''], dtype=object)
array(['Pancino', 'Elena', ''], dtype=object)]
|
4,264 |
1705.07904
|
Chris Donahue
|
Chris Donahue, Zachary C. Lipton, Akshay Balsubramani, Julian McAuley
|
Semantically Decomposing the Latent Spaces of Generative Adversarial
Networks
|
Published as a conference paper at ICLR 2018
| null | null | null |
cs.LG cs.AI cs.CV cs.NE stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We propose a new algorithm for training generative adversarial networks that
jointly learns latent codes for both identities (e.g. individual humans) and
observations (e.g. specific photographs). By fixing the identity portion of the
latent codes, we can generate diverse images of the same subject, and by fixing
the observation portion, we can traverse the manifold of subjects while
maintaining contingent aspects such as lighting and pose. Our algorithm
features a pairwise training scheme in which each sample from the generator
consists of two images with a common identity code. Corresponding samples from
the real dataset consist of two distinct photographs of the same subject. In
order to fool the discriminator, the generator must produce pairs that are
photorealistic, distinct, and appear to depict the same individual. We augment
both the DCGAN and BEGAN approaches with Siamese discriminators to facilitate
pairwise training. Experiments with human judges and an off-the-shelf face
verification system demonstrate our algorithm's ability to generate convincing,
identity-matched photographs.
|
[{'version': 'v1', 'created': 'Mon, 22 May 2017 18:00:02 GMT'}
{'version': 'v2', 'created': 'Tue, 31 Oct 2017 18:00:05 GMT'}
{'version': 'v3', 'created': 'Thu, 22 Feb 2018 19:36:33 GMT'}]
|
2018-02-26
|
[array(['Donahue', 'Chris', ''], dtype=object)
array(['Lipton', 'Zachary C.', ''], dtype=object)
array(['Balsubramani', 'Akshay', ''], dtype=object)
array(['McAuley', 'Julian', ''], dtype=object)]
|
4,265 |
cond-mat/0209330
|
Ponniah Ravindran
|
P.Ravindran, R.Vidya, P.Vajeeston, A.Kjekshus, H.Fjellvaag and B.C.
Hauback
|
Antiferromagnetic vs ferromagnetic interactions and spin-glass-like
behavior in ruthenates
|
5 pages, 3 figures. Solid state communications (in press)
| null |
10.1016/S0038-1098(02)00472-6
| null |
cond-mat.mtrl-sci
| null |
We have made a series of gradient-corrected relativistic full-potential
density-functional calculation for Ca-substituted and hole-doped SrRuO$_3$ in
para, ferro, and $A$-, $C$-, and $G$-type antiferromagnetic states. Magnetic
phase-diagram data for Sr$_{1-x}$Ca$_x$RuO$_3$ at 0 K are presented. Neutron
diffraction measurement combined with total energy calculations show that
spin-glass behavior with short-range antiferromagnetic interactions rules in
CaRuO$_3$. The substitution of Sr by Ca in SrRuO$_3$ decreases the
ferromagnetic interaction and enhances the $G$-type antiferromagnetic
interaction; the $G$-AF state is found to stabilize around $x$ = 0.75
consistent with experimental observations. Inclusion of spin-orbit coupling is
found to be important in order to arrive at the correct magnetic ground state
in ruthenates.
|
[{'version': 'v1', 'created': 'Mon, 16 Sep 2002 18:12:16 GMT'}]
|
2009-11-07
|
[array(['Ravindran', 'P.', ''], dtype=object)
array(['Vidya', 'R.', ''], dtype=object)
array(['Vajeeston', 'P.', ''], dtype=object)
array(['Kjekshus', 'A.', ''], dtype=object)
array(['Fjellvaag', 'H.', ''], dtype=object)
array(['Hauback', 'B. C.', ''], dtype=object)]
|
4,266 |
1810.05824
|
Bestoun Ahmed Dr.
|
Kamal Z. Zamli, Bestoun S. Ahmed, Thair Mahmoud, Wasif Afzal
|
Fuzzy Adaptive Tuning of a Particle Swarm Optimization Algorithm for
Variable-Strength Combinatorial Test Suite Generation
|
21 pages
| null | null | null |
cs.SE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Combinatorial interaction testing is an important software testing technique
that has seen lots of recent interest. It can reduce the number of test cases
needed by considering interactions between combinations of input parameters.
Empirical evidence shows that it effectively detects faults, in particular, for
highly configurable software systems. In real-world software testing, the input
variables may vary in how strongly they interact, variable strength
combinatorial interaction testing (VS-CIT) can exploit this for higher
effectiveness. The generation of variable strength test suites is a
non-deterministic polynomial-time (NP) hard computational problem
\cite{BestounKamalFuzzy2017}. Research has shown that stochastic
population-based algorithms such as particle swarm optimization (PSO) can be
efficient compared to alternatives for VS-CIT problems. Nevertheless, they
require detailed control for the exploitation and exploration trade-off to
avoid premature convergence (i.e. being trapped in local optima) as well as to
enhance the solution diversity. Here, we present a new variant of PSO based on
Mamdani fuzzy inference system
\cite{Camastra2015,TSAKIRIDIS2017257,KHOSRAVANIAN2016280}, to permit adaptive
selection of its global and local search operations. We detail the design of
this combined algorithm and evaluate it through experiments on multiple
synthetic and benchmark problems. We conclude that fuzzy adaptive selection of
global and local search operations is, at least, feasible as it performs only
second-best to a discrete variant of PSO, called DPSO. Concerning obtaining the
best mean test suite size, the fuzzy adaptation even outperforms DPSO
occasionally. We discuss the reasons behind this performance and outline
relevant areas of future work.
|
[{'version': 'v1', 'created': 'Sat, 13 Oct 2018 08:52:50 GMT'}]
|
2018-10-16
|
[array(['Zamli', 'Kamal Z.', ''], dtype=object)
array(['Ahmed', 'Bestoun S.', ''], dtype=object)
array(['Mahmoud', 'Thair', ''], dtype=object)
array(['Afzal', 'Wasif', ''], dtype=object)]
|
4,267 |
1411.2284
|
Yuri Cavecchi
|
Yuri Cavecchi, Anna L. Watts, Yuri Levin, Jonathan Braithwaite
|
Rotational effects in thermonuclear Type I Bursts: equatorial crossing
and directionality of flame spreading
|
Accepted for publication by MNRAS
| null |
10.1093/mnras/stu2764
| null |
astro-ph.HE astro-ph.SR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In a previous study on thermonuclear (type I) nursts on accreting neutron
stars we addressed and demonstrated the importance of the effects of rotation,
through the Coriolis force, on the propagation of the burning flame. However,
that study only analysed cases of longitudinal propagation, where the Coriolis
force coefficient $2\Omega\cos\theta$ was constant. In this paper, we study the
effects of rotation on propagation in the meridional (latitudinal) direction,
where the Coriolis force changes from its maximum at the poles to zero at the
equator. We find that the zero Coriolis force at the equator, while affecting
the structure of the flame, does not prevent its propagation from one
hemisphere to another. We also observe structural differences between the flame
propagating towards the equator and that propagating towards the pole, the
second being faster. In the light of the recent discovery of the low spin
frequency of burster IGR~J17480-2446 rotating at 11 Hz (for which Coriolis
effects should be negligible) we also extend our simulations to slow rotation.
|
[{'version': 'v1', 'created': 'Sun, 9 Nov 2014 21:26:16 GMT'}
{'version': 'v2', 'created': 'Fri, 30 Jan 2015 15:40:07 GMT'}]
|
2015-06-23
|
[array(['Cavecchi', 'Yuri', ''], dtype=object)
array(['Watts', 'Anna L.', ''], dtype=object)
array(['Levin', 'Yuri', ''], dtype=object)
array(['Braithwaite', 'Jonathan', ''], dtype=object)]
|
4,268 |
astro-ph/0204064
|
C. A. Terrero-Escalante
|
C. A. Terrero-Escalante
|
Sketching the inflaton potential
|
To appear in the Proceedings of the ``1st Mexican Meeting on
Mathematical and Experimental Physics", El Colegio Nacional, Mexico City,
September, 2001. 8 pages, uses kapproc.cls
| null | null | null |
astro-ph gr-qc hep-ph
| null |
Based on solutions of the Stewart-Lyth inverse problem it is argued that in
the CMB data analysis the parametrization of the primordial spectra from
inflation must include the `running' of both, scalar and tensorial, spectral
indices if information beyond the exponential potential model is wanted to be
detected.
|
[{'version': 'v1', 'created': 'Wed, 3 Apr 2002 20:50:23 GMT'}]
|
2007-05-23
|
[array(['Terrero-Escalante', 'C. A.', ''], dtype=object)]
|
4,269 |
2102.12528
|
Constantin Philippenko
|
Constantin Philippenko and Aymeric Dieuleveut
|
Preserved central model for faster bidirectional compression in
distributed settings
|
Bidirectional compression for Federated Learning: 59 pages, 5
theorems, published at NeurIPS 2021
|
Advances in Neural Information Processing Systems, 2021, vol. 34,
p. 2387-2399
| null | null |
cs.LG cs.DC math.ST stat.TH
|
http://creativecommons.org/licenses/by/4.0/
|
We develop a new approach to tackle communication constraints in a
distributed learning problem with a central server. We propose and analyze a
new algorithm that performs bidirectional compression and achieves the same
convergence rate as algorithms using only uplink (from the local workers to the
central server) compression. To obtain this improvement, we design MCM, an
algorithm such that the downlink compression only impacts local models, while
the global model is preserved. As a result, and contrary to previous works, the
gradients on local servers are computed on perturbed models. Consequently,
convergence proofs are more challenging and require a precise control of this
perturbation. To ensure it, MCM additionally combines model compression with a
memory mechanism. This analysis opens new doors, e.g. incorporating worker
dependent randomized-models and partial participation.
|
[{'version': 'v1', 'created': 'Wed, 24 Feb 2021 19:48:20 GMT'}
{'version': 'v2', 'created': 'Thu, 16 Jun 2022 14:00:00 GMT'}]
|
2022-06-17
|
[array(['Philippenko', 'Constantin', ''], dtype=object)
array(['Dieuleveut', 'Aymeric', ''], dtype=object)]
|
4,270 |
1009.2210
|
Lin Zhang
|
Lin Zhang and Junde Wu
|
A Survey of Dynamical Matrices Theory
|
22 pages, LaTeX
| null | null | null |
quant-ph math-ph math.MP math.OA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this note, we survey some elementary theorems and proofs concerning
dynamical matrices theory. Some mathematical concepts and results involved in
quantum information theory are reviewed. A little new result on the matrix
representation of quantum operation are obtained. And best separable
approximation for quantum operations is presented.
|
[{'version': 'v1', 'created': 'Sun, 12 Sep 2010 02:30:19 GMT'}
{'version': 'v2', 'created': 'Mon, 20 Sep 2010 06:18:01 GMT'}
{'version': 'v3', 'created': 'Fri, 1 Oct 2010 04:52:51 GMT'}
{'version': 'v4', 'created': 'Mon, 18 Oct 2010 12:45:51 GMT'}
{'version': 'v5', 'created': 'Fri, 28 Oct 2011 10:18:02 GMT'}]
|
2011-10-31
|
[array(['Zhang', 'Lin', ''], dtype=object)
array(['Wu', 'Junde', ''], dtype=object)]
|
4,271 |
hep-th/0312137
|
Emiliano Imeroni
|
Emiliano Imeroni
|
N=1 gauge superpotentials from supergravity
|
LaTeX, iopart class, 8 pages, 3 figures. Contribution to the
proceedings of the workshop of the RTN Network "The quantum structure of
space-time and the geometric nature of fundamental interactions", Copenhagen,
September 2003; v2: published version with minor clarifications
|
Class.Quant.Grav. 21 (2004) S1425-1432
|
10.1088/0264-9381/21/10/014
|
ITP-UU-03/68, SPIN-03/44
|
hep-th
| null |
We review the supergravity derivation of some non-perturbatively generated
effective superpotentials for N=1 gauge theories. Specifically, we derive the
Veneziano-Yankielowicz superpotential for pure N=1 Super Yang-Mills theory from
the warped deformed conifold solution, and the Affleck-Dine-Seiberg
superpotential for N=1 SQCD from a solution describing fractional D3-branes on
a C^3 / Z_2 x Z_2 orbifold.
|
[{'version': 'v1', 'created': 'Fri, 12 Dec 2003 14:08:52 GMT'}
{'version': 'v2', 'created': 'Fri, 23 Jan 2004 13:15:18 GMT'}]
|
2009-11-10
|
[array(['Imeroni', 'Emiliano', ''], dtype=object)]
|
4,272 |
1106.0448
|
Dilip Asthagiri
|
Safir Merchant and D. Asthagiri
|
Range of ion specific effects in the hydration of ions
| null | null | null | null |
physics.bio-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Within the quasichemical approach, the hydration free energy of an ion is
decomposed into a chemical term accounting for ion specific ion-water
interactions within the coordination sphere and nonspecific contributions
accounting for packing (excluded volume) and long range interactions. The
change in the chemical term with a change in the radius of the coordination
sphere is the compressive force exerted by the bulk solvent medium on the
surface of the coordination sphere. For the Na+, K+, F-, and Cl- ions
considered here this compressive force becomes equal for similarly charged ions
for coordination radii of about 0.39 nm, not much larger than a water molecule.
These results show that ion specific effects are short ranged and arise
primarily due to differences in the local ion-water interactions.
|
[{'version': 'v1', 'created': 'Thu, 2 Jun 2011 15:17:04 GMT'}]
|
2011-06-03
|
[array(['Merchant', 'Safir', ''], dtype=object)
array(['Asthagiri', 'D.', ''], dtype=object)]
|
4,273 |
1612.04483
|
Evgeni Solodov P
|
R.R.Akhmetshin, A.N.Amirkhanov, A.V.Anisenkov, V.M.Aulchenko,
V.Sh.Banzarov, N.S.Bashtovoy, D.E.Berkaev, A.E.Bondar, A.V.Bragin,
S.I.Eidelman, D.A.Epifanov, L.B.Epshteyn, A.L.Erofeev, G.V.Fedotovich,
S.E.Gayazov, A.A.Grebenuk, S.S.Gribanov, D.N.Grigoriev, F.V.Ignatov,
V.L.Ivanov, S.V.Karpov, A.S.Kasaev, V.F.Kazanin, I.A.Koop, O.A.Kovalenko,
A.A.Korobov, A.N.Kozyrev, E.A.Kozyrev, P.P.Krokovny, A.E.Kuzmenko,
A.S.Kuzmin, I.B.Logashenko, A.P.Lysenko, P.A.Lukin, K.Yu.Mikhailov,
V.S.Okhapkin, Yu.N.Pestov, E.A.Perevedentsev, A.S.Popov, G.P.Razuvaev,
Yu.A.Rogovsky, A.A.Ruban, N.M.Ryskulov, A.E.Ryzhenenkov, V.E.Shebalin,
D.N.Shemyakin, B.A.Shwartz, D.B.Shwartz, A.L.Sibidanov, Yu.M.Shatunov,
E.P.Solodov, V.M.Titov, A.A.Talyshev, A.I.Vorobiov, Yu.V.Yudin
|
Study of the Process $e^+e^-\to \pi^+\pi^-\pi^+\pi^-$ IN THE C.M. Energy
Range 920--1060 MeV with the CMD-3 Detector
|
16 pages, 6 figures
| null |
10.1016/j.physletb.2017.03.022
| null |
hep-ex
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A cross section of the process $e^+e^- \to \pipi\pipi$ has been measured
using 6798$\pm$93 signal events from a data sample corresponding to an
integrated luminosity of 9.8 pb$^{-1}$ collected with the CMD-3 detector in the
center-of-mass energy range 920--1060 MeV. The measured cross section exhibits
an interference pattern of the $\phi(1020)\to\pipi\pipi$ decay with a
non-resonant process $e^+e^- \to \pipi\pipi$, from which we obtain the
branching fraction of the doubly suppressed decays (by G-parity and OZI rule):
$\BR(\phi\to\pipi\pipi) = (6.5\pm2.7\pm1.6)\times 10^{-6}$.
|
[{'version': 'v1', 'created': 'Wed, 14 Dec 2016 04:29:02 GMT'}
{'version': 'v2', 'created': 'Tue, 27 Dec 2016 07:37:46 GMT'}]
|
2017-03-22
|
[array(['Akhmetshin', 'R. R.', ''], dtype=object)
array(['Amirkhanov', 'A. N.', ''], dtype=object)
array(['Anisenkov', 'A. V.', ''], dtype=object)
array(['Aulchenko', 'V. M.', ''], dtype=object)
array(['Banzarov', 'V. Sh.', ''], dtype=object)
array(['Bashtovoy', 'N. S.', ''], dtype=object)
array(['Berkaev', 'D. E.', ''], dtype=object)
array(['Bondar', 'A. E.', ''], dtype=object)
array(['Bragin', 'A. V.', ''], dtype=object)
array(['Eidelman', 'S. I.', ''], dtype=object)
array(['Epifanov', 'D. A.', ''], dtype=object)
array(['Epshteyn', 'L. B.', ''], dtype=object)
array(['Erofeev', 'A. L.', ''], dtype=object)
array(['Fedotovich', 'G. V.', ''], dtype=object)
array(['Gayazov', 'S. E.', ''], dtype=object)
array(['Grebenuk', 'A. A.', ''], dtype=object)
array(['Gribanov', 'S. S.', ''], dtype=object)
array(['Grigoriev', 'D. N.', ''], dtype=object)
array(['Ignatov', 'F. V.', ''], dtype=object)
array(['Ivanov', 'V. L.', ''], dtype=object)
array(['Karpov', 'S. V.', ''], dtype=object)
array(['Kasaev', 'A. S.', ''], dtype=object)
array(['Kazanin', 'V. F.', ''], dtype=object)
array(['Koop', 'I. A.', ''], dtype=object)
array(['Kovalenko', 'O. A.', ''], dtype=object)
array(['Korobov', 'A. A.', ''], dtype=object)
array(['Kozyrev', 'A. N.', ''], dtype=object)
array(['Kozyrev', 'E. A.', ''], dtype=object)
array(['Krokovny', 'P. P.', ''], dtype=object)
array(['Kuzmenko', 'A. E.', ''], dtype=object)
array(['Kuzmin', 'A. S.', ''], dtype=object)
array(['Logashenko', 'I. B.', ''], dtype=object)
array(['Lysenko', 'A. P.', ''], dtype=object)
array(['Lukin', 'P. A.', ''], dtype=object)
array(['Mikhailov', 'K. Yu.', ''], dtype=object)
array(['Okhapkin', 'V. S.', ''], dtype=object)
array(['Pestov', 'Yu. N.', ''], dtype=object)
array(['Perevedentsev', 'E. A.', ''], dtype=object)
array(['Popov', 'A. S.', ''], dtype=object)
array(['Razuvaev', 'G. P.', ''], dtype=object)
array(['Rogovsky', 'Yu. A.', ''], dtype=object)
array(['Ruban', 'A. A.', ''], dtype=object)
array(['Ryskulov', 'N. M.', ''], dtype=object)
array(['Ryzhenenkov', 'A. E.', ''], dtype=object)
array(['Shebalin', 'V. E.', ''], dtype=object)
array(['Shemyakin', 'D. N.', ''], dtype=object)
array(['Shwartz', 'B. A.', ''], dtype=object)
array(['Shwartz', 'D. B.', ''], dtype=object)
array(['Sibidanov', 'A. L.', ''], dtype=object)
array(['Shatunov', 'Yu. M.', ''], dtype=object)
array(['Solodov', 'E. P.', ''], dtype=object)
array(['Titov', 'V. M.', ''], dtype=object)
array(['Talyshev', 'A. A.', ''], dtype=object)
array(['Vorobiov', 'A. I.', ''], dtype=object)
array(['Yudin', 'Yu. V.', ''], dtype=object)]
|
4,274 |
1309.3878
|
Kenji Bekki dr
|
Kenji Bekki
|
Simulating galaxy evolution with a non-universal stellar initial mass
function
|
27 pages, 19 figures, accepted for the publication in MNRAS
| null |
10.1093/mnras/stt1735
| null |
astro-ph.CO astro-ph.GA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider that the stellar initial mass function (IMF) depends on physical
properties of star-forming molecular clouds in galaxies and thereby investigate
how such a non-universal IMF (NUIMF) influences galaxy evolution. We
incorporate a NUIMF model into galaxy-scale chemodynamical simulations in order
to investigate the differences in chemical and dynamical evolution of disk
galaxies between the NUIMF and universal IMF (UIMF) models. In the adopted
NUIMF model, the three slopes of the Kroupa IMF depend independently on
densities and metallicities ([Fe/H]) of molecular gas clouds, and production
rates of metals and dust from massive and AGB stars can vary according to the
time evolution of the three IMF slopes. The preliminary results of the
simulations are as follows. Star formation rates in actively star-forming disk
galaxies can be significantly lower in the NUIMF model than in the UIMF model,
and the differences between the two models can be more remarkable in galaxies
with higher SFRs. Chemical enrichment can proceed more rapidly in the NUIMF
model and [Mg/Fe] for a given metallicity is higher in the NUIMF model. The
evolution of H2 fraction (f_H2) and dust-to-gas ratio (D) is more rapid in the
NUIMF model so that the final f_H2 and $D$ can be higher in the NUIMF model.
Formation of massive stellar clumps in gas-rich disks is more strongly
suppressed owing to the stronger SN feedback effect in the NUIMF model. The
radial density profiles of new stars within the central 1kpc are shallower in
the NUIMF model.
|
[{'version': 'v1', 'created': 'Mon, 16 Sep 2013 09:40:00 GMT'}]
|
2015-06-17
|
[array(['Bekki', 'Kenji', ''], dtype=object)]
|
4,275 |
hep-ph/9803212
|
Masafumi Koike
|
Masafumi Koike and Joe Sato
|
Effects of Matter Density Fluctuation in Long Baseline Neutrino
Oscillation Experiments
|
6 pages + 2 eps figures
|
Mod.Phys.Lett. A14 (1999) 1297-1302
|
10.1142/S0217732399001383
|
ICRR-Report-412-98-8, UT-806
|
hep-ph
| null |
The effects of matter density fluctuation in long baseline neutrino
oscillation experiments are studied. Effects of short wavelength fluctuations
are in general irrelevant. Effects of long wavelength fluctuations must be
checked on a case-by-case basis. As an example we checked the fluctuation
effects and showed its irrelevance in a case of K2K experiments.
|
[{'version': 'v1', 'created': 'Mon, 2 Mar 1998 09:55:10 GMT'}]
|
2009-10-31
|
[array(['Koike', 'Masafumi', ''], dtype=object)
array(['Sato', 'Joe', ''], dtype=object)]
|
4,276 |
1601.01663
|
Jonas Schou Neergaard-Nielsen
|
Ulrich B. Hoff, Johann Kollath-B\"onig, Jonas S. Neergaard-Nielsen,
Ulrik L. Andersen
|
Measurement-induced macroscopic superposition states in cavity
optomechanics
|
7 pages, 5 figures
|
Phys. Rev. Lett. 117, 143601 (2016)
|
10.1103/PhysRevLett.117.143601
| null |
quant-ph physics.optics
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present a novel proposal for generating quantum superpositions of
macroscopically distinct states of a bulk mechanical oscillator, compatible
with existing optomechanical devices operating in the readily achievable
bad-cavity limit. The scheme is based on a pulsed cavity optomechanical quantum
non-demolition (QND) interaction, driven by displaced non-Gaussian states, and
measurement-induced feedback, avoiding the need for strong single-photon
optomechanical coupling. Furthermore, we show that single-quadrature cooling of
the mechanical oscillator is sufficient for efficient state preparation, and we
outline a three-pulse protocol comprising a sequence of QND interactions for
squeezing-enhanced cooling, state preparation, and tomography.
|
[{'version': 'v1', 'created': 'Thu, 7 Jan 2016 20:48:51 GMT'}]
|
2016-10-05
|
[array(['Hoff', 'Ulrich B.', ''], dtype=object)
array(['Kollath-Bönig', 'Johann', ''], dtype=object)
array(['Neergaard-Nielsen', 'Jonas S.', ''], dtype=object)
array(['Andersen', 'Ulrik L.', ''], dtype=object)]
|
4,277 |
0705.0707
|
Brenda L. Dingus
|
A. A. Abdo, B. Allen, D. Berley, S. Casanova, C. Chen, D. G. Coyne, B.
L. Dingus, R. W. Ellsworth, L. Fleysher, R. Fleysher, M. M. Gonzalez, J. A.
Goodman, E. Hays, C. M. Hoffman, B. Hopper, P. H. Huntemeyer, B. E.
Kolterman, C. P. Lansdell, J. T. Linnemann, J. E. McEnery, A. I. Mincer, P.
Nemethy, D. Noyes, J. M. Ryan, P. M. Saz Parkinson, A. Shoup, G. Sinnis, A.
J. Smith, G. W. Sullivan, V. Vasileiou, G. P. Walker, D. A. Williams, X. W.
Xu, and G. B. Yodh
|
TeV Gamma-Ray Sources from a Survey of the Galactic Plane with Milagro
|
Submitted to ApJ
|
Astrophys.J.664:L91-L94,2007
|
10.1086/520717
| null |
astro-ph
| null |
A survey of Galactic gamma-ray sources at a median energy of ~20 TeV has been
performed using the Milagro Gamma Ray Observatory. Eight candidate sources of
TeV emission are detected with pre-trials significance $>4.5\sigma$ in the
region of Galactic longitude $l\in[30^\circ,220^\circ]$ and latitude
$b\in[-10^\circ,10^\circ]$. Four of these sources, including the Crab nebula
and the recently published MGRO J2019+37, are observed with significances
$>4\sigma$ after accounting for the trials involved in searching the 3800
square degree region. All four of these sources are also coincident with EGRET
sources. Two of the lower significance sources are coincident with EGRET
sources and one of these sources is Geminga. The other two candidates are in
the Cygnus region of the Galaxy. Several of the sources appear to be spatially
extended. The fluxes of the sources at 20 TeV range from ~25% of the Crab flux
to nearly as bright as the Crab.
|
[{'version': 'v1', 'created': 'Fri, 4 May 2007 20:42:24 GMT'}]
|
2009-06-23
|
[array(['Abdo', 'A. A.', ''], dtype=object)
array(['Allen', 'B.', ''], dtype=object)
array(['Berley', 'D.', ''], dtype=object)
array(['Casanova', 'S.', ''], dtype=object)
array(['Chen', 'C.', ''], dtype=object)
array(['Coyne', 'D. G.', ''], dtype=object)
array(['Dingus', 'B. L.', ''], dtype=object)
array(['Ellsworth', 'R. W.', ''], dtype=object)
array(['Fleysher', 'L.', ''], dtype=object)
array(['Fleysher', 'R.', ''], dtype=object)
array(['Gonzalez', 'M. M.', ''], dtype=object)
array(['Goodman', 'J. A.', ''], dtype=object)
array(['Hays', 'E.', ''], dtype=object)
array(['Hoffman', 'C. M.', ''], dtype=object)
array(['Hopper', 'B.', ''], dtype=object)
array(['Huntemeyer', 'P. H.', ''], dtype=object)
array(['Kolterman', 'B. E.', ''], dtype=object)
array(['Lansdell', 'C. P.', ''], dtype=object)
array(['Linnemann', 'J. T.', ''], dtype=object)
array(['McEnery', 'J. E.', ''], dtype=object)
array(['Mincer', 'A. I.', ''], dtype=object)
array(['Nemethy', 'P.', ''], dtype=object)
array(['Noyes', 'D.', ''], dtype=object)
array(['Ryan', 'J. M.', ''], dtype=object)
array(['Parkinson', 'P. M. Saz', ''], dtype=object)
array(['Shoup', 'A.', ''], dtype=object)
array(['Sinnis', 'G.', ''], dtype=object)
array(['Smith', 'A. J.', ''], dtype=object)
array(['Sullivan', 'G. W.', ''], dtype=object)
array(['Vasileiou', 'V.', ''], dtype=object)
array(['Walker', 'G. P.', ''], dtype=object)
array(['Williams', 'D. A.', ''], dtype=object)
array(['Xu', 'X. W.', ''], dtype=object)
array(['Yodh', 'G. B.', ''], dtype=object)]
|
4,278 |
2006.00319
|
Federico Re
|
Federico Re
|
Fake dark matter from retarded distortions
|
35 pages, 8 figures
| null |
10.1140/epjc/s10052-021-09156-y
| null |
gr-qc
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We push ahead the idea developed in [24], that some fraction of the dark
matter and the dark energy can be explained as a relativistic effect. The
inhomogeneity matter generates gravitational distortions, which are general
relativistically retarded. These combine in a magnification effect since the
past matter density, which generated the distortion we feel now, is greater
than the present one. The non negligible effect on the averaged expansion of
the universe contributes both to the estimations of the dark matter and to the
dark energy, so that the parameters of the Cosmological Standard Model need
some corrections.
In this second work we apply the previously developed framework to
relativistic models of the universe. It results that one parameter remain free,
so that more solutions are possible, as function of inhomogeneity. One of these
fully explains the dark energy, but requires more dark matter than the
Cosmological Standard Model (91% of the total matter). Another solution fully
explains the dark matter, but requires more dark energy than the Cosmological
Standard Model (15% more). A third noteworthy solution explains a consistent
part of the dark matter (it would be 63% of the total matter) and also some of
the dark energy (4%).
|
[{'version': 'v1', 'created': 'Sat, 30 May 2020 17:07:50 GMT'}]
|
2021-05-12
|
[array(['Re', 'Federico', ''], dtype=object)]
|
4,279 |
gr-qc/0007053
|
Moncy John
|
Moncy V. John
|
Studies on a New Cosmological Model Based on Complex Metric
|
Ph.D. Thesis, Supervisor: K. Babu Joseph, 77 pages
| null | null | null |
gr-qc astro-ph hep-th
| null |
In this thesis, the implications of a new cosmological model are studied,
which has features similar to that of decaying vacuum cosmologies. Decaying
vacuum (or cosmological constant \Lambda) models are the results of attempts to
resolve the problems that plague the standard hot big bang model - the problems
which elude a satisfactory solution even after the two decades of of
inflationary models, the first and much publicised cure to them. We arrive at
the present model by a radically new route, which extends the idea of a
signature change in the metric, a widely discussed speculation in the current
literature. An alternative approach uses some dimensional considerations in
line with quantum cosmology and gives an almost identical model. Both
derivations involve some fundamental issues in general theory of relativity.
The model has a coasting evolution (i.e., a \propto t). It claims the absence
of all the aforementioned puzzles in the standard model and has very good
predictions. In the first two chapters of the thesis, we review the general
theory of relativity, the standard model in cosmology, its successes, the
problems in it and also the most successful of those attempts to solve them,
namely, the inflationary and decaying vacuum models. In the third chapter, we
present and discuss the new cosmological model in detail. The fourth chapter is
concerned with quantum cosmology. We briefly review the canonical quantisation
programme of solving the Wheeler-DeWitt equation, then apply the procedure to
our model and show that it satisfies many of the much sought-after ideals of
this formalism. The last chapter of the thesis compares the new model with
other ones. It also discusses the appearance of a Casimir type negative energy
density in it and the prospects and challenges ahead for the model.
|
[{'version': 'v1', 'created': 'Thu, 20 Jul 2000 18:25:54 GMT'}]
|
2007-05-23
|
[array(['John', 'Moncy V.', ''], dtype=object)]
|
4,280 |
cond-mat/0611654
|
Massimo Ostilli
|
Massimo Ostilli, Farrukh Mukhamedov, Jos\'e F. F. Mendes
|
Phase diagram of an Ising model with competitive interactions on a
Husimi tree and its disordered counterpart
|
19 pages, 11 figures; content changed
|
Physica A: Vol 387/12, 2777 (2008)
|
10.1016/j.physa.2008.01.071
| null |
cond-mat.dis-nn cond-mat.stat-mech
| null |
We consider an Ising competitive model defined over a triangular Husimi tree
where loops, responsible for an explicit frustration, are even allowed. After a
critical analysis of the phase diagram, in which a ``gas of non interacting
dimers (or spin liquid) - ferro or antiferromagnetic ordered state'' transition
is recognized in the frustrated regions, we introduce the disorder for studying
the spin glass version of the model: the triangular +/- J model. We find out
that, for any finite value of the averaged couplings, the model exhibits always
a phase transition, even in the frustrated regions, where the transition turns
out to be a glassy transition. The analysis of the random model is done by
applying a recently proposed method which allows to derive the upper phase
boundary of a random model through a mapping with a corresponding non random
one.
|
[{'version': 'v1', 'created': 'Sun, 26 Nov 2006 15:13:50 GMT'}
{'version': 'v2', 'created': 'Fri, 1 Dec 2006 17:19:12 GMT'}
{'version': 'v3', 'created': 'Thu, 2 Aug 2007 16:53:54 GMT'}]
|
2009-09-29
|
[array(['Ostilli', 'Massimo', ''], dtype=object)
array(['Mukhamedov', 'Farrukh', ''], dtype=object)
array(['Mendes', 'José F. F.', ''], dtype=object)]
|
4,281 |
2211.16895
|
Enes Yigitbas
|
Enes Yigitbas, Stefan Sauer, Gregor Engels
|
Self-Adaptive Digital Assistance Systems for Work 4.0
|
Preprint of our book chapter in: Digital Transformation: Core
Technologies and Emerging Topics from a Computer Science Perspective,
Springer-Vieweg, 2022
| null | null | null |
cs.HC cs.SE
|
http://creativecommons.org/licenses/by-sa/4.0/
|
In the era of digital transformation, new technological foundations and
possibilities for collaboration, production as well as organization open up
many opportunities to work differently in the future. The digitization of
workflows results in new forms of working which is denoted by the term Work
4.0. In the context of Work 4.0, digital assistance systems play an important
role as they give users additional situation-specific information about a
workflow or a product via displays, mobile devices such as tablets and
smartphones, or data glasses. Furthermore, such digital assistance systems can
be used to provide instructions and technical support in the working process as
well as for training purposes. However, existing digital assistance systems are
mostly created focusing on the "design for all" paradigm neglecting the
situation-specific tasks, skills, preferences, or environments of an individual
human worker. To overcome this issue, we present a monitoring and adaptation
framework for supporting self-adaptive digital assistance systems for Work 4.0.
Our framework supports context monitoring as well as UI adaptation for
augmented (AR) and virtual reality (VR)-based digital assistance systems. The
benefit of our framework is shown based on exemplary case studies from
different domains, e.g. context-aware maintenance application in AR or
warehouse management training in VR.
|
[{'version': 'v1', 'created': 'Wed, 30 Nov 2022 10:47:40 GMT'}]
|
2022-12-01
|
[array(['Yigitbas', 'Enes', ''], dtype=object)
array(['Sauer', 'Stefan', ''], dtype=object)
array(['Engels', 'Gregor', ''], dtype=object)]
|
4,282 |
2009.04631
|
Oluwaseun Aribido
|
Oluwaseun Joseph Aribido, Ghassan AlRegib and Mohamed Deriche
|
Self-Supervised Annotation of Seismic Images using Latent Space
Factorization
| null | null | null | null |
eess.IV cs.LG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Annotating seismic data is expensive, laborious and subjective due to the
number of years required for seismic interpreters to attain proficiency in
interpretation. In this paper, we develop a framework to automate annotating
pixels of a seismic image to delineate geological structural elements given
image-level labels assigned to each image. Our framework factorizes the latent
space of a deep encoder-decoder network by projecting the latent space to
learned sub-spaces. Using constraints in the pixel space, the seismic image is
further factorized to reveal confidence values on pixels associated with the
geological element of interest. Details of the annotated image are provided for
analysis and qualitative comparison is made with similar frameworks.
|
[{'version': 'v1', 'created': 'Thu, 10 Sep 2020 01:54:45 GMT'}
{'version': 'v2', 'created': 'Sat, 26 Sep 2020 02:30:07 GMT'}]
|
2020-09-29
|
[array(['Aribido', 'Oluwaseun Joseph', ''], dtype=object)
array(['AlRegib', 'Ghassan', ''], dtype=object)
array(['Deriche', 'Mohamed', ''], dtype=object)]
|
4,283 |
1410.8203
|
Joshua Combes
|
Joshua Combes, Aaron Denney, and Howard M. Wiseman
|
Rapid readout of a register of qubits using open loop quantum control
| null |
Phys. Rev. A 91, 022305 (2015)
|
10.1103/PhysRevA.91.022305
| null |
quant-ph math.OC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Measurements are a primitive for characterizing quantum systems. Reducing the
time taken to perform a measurement may be beneficial in many areas of quantum
information processing. We show that permuting the eigenvalues of the state
matrix in the logical basis, using open loop control, provides a $O(n)$
reduction in the measurement time, where $n$ is the number of qubits in the
register. This reduction is of the same order as the (previously introduced)
locally optimal feedback protocol. The advantage of the open loop protocol is
that it is far less difficult experimentally. Because the control commutes with
the measured observable at all times, our rapid measurement protocol could be
used for characterizing a quantum system, by state or process tomography, or to
implement measurement-based quantum error correction.
|
[{'version': 'v1', 'created': 'Thu, 30 Oct 2014 00:00:49 GMT'}]
|
2015-02-10
|
[array(['Combes', 'Joshua', ''], dtype=object)
array(['Denney', 'Aaron', ''], dtype=object)
array(['Wiseman', 'Howard M.', ''], dtype=object)]
|
4,284 |
1203.2138
|
Mustapha Ishak
|
M. A. Troxel, Mustapha Ishak (The University of Texas at Dallas)
|
Self-Calibration for 3-point Intrinsic Alignment Auto-Correlations in
Weak Lensing Surveys
|
14 pages, 5 figures
|
Mon.Not.Roy.Astron.Soc.423:1663-1673,2012
|
10.1111/j.1365-2966.2012.20987.x
| null |
astro-ph.CO gr-qc
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The weak lensing signal (cosmic shear) has been shown to be strongly
contaminated by the various types of galaxy intrinsic alignment (IA)
correlations, which poses a barrier to precision weak lensing measurements. The
redshift dependence of the IA signal has been used at the 2-point level to
reduce this contamination by only measuring cross-correlations between large
redshift bins, which significantly reduces the galaxy intrinsic ellipticity -
intrinsic ellipticity (II) correlation. A self-calibration technique based on
the redshift dependences of the IA correlations has also been proposed as a
means to remove the 2-point IA contamination from the lensing signal. We
explore here the redshift dependences of the IA and lensing bispectra in order
to propose a self-calibration of the IA auto-correlations at the 3-point level
(i.e. GGI, GII, and III), which can be well understood without the assumption
of any particular IA model. We find that future weak lensing surveys will be
able to measure the distinctive IA redshift dependence over ranges of $|\Delta
z^P|\le 0.2$. Using conservative estimates of photo-z accuracy, we describe the
3-point self-calibration technique for the total IA signal, which can be
accomplished through lensing tomography of photo-z bin size $\sim 0.01$. We
find that the 3-point self-calibration can function at the accuracy of the
2-point technique with modest constraints in redshift separation. This allows
the 3-point IA auto-correlation self-calibration technique proposed here to
significantly reduce the contamination of the IA contamination to the weak
lensing bispectrum.
|
[{'version': 'v1', 'created': 'Fri, 9 Mar 2012 17:05:30 GMT'}]
|
2015-06-04
|
[array(['Troxel', 'M. A.', '', 'The University of Texas at Dallas'],
dtype=object)
array(['Ishak', 'Mustapha', '', 'The University of Texas at Dallas'],
dtype=object) ]
|
4,285 |
2004.10069
|
Ming Du
|
Ming Du, and Chris Jacobsen
|
Relative merits and limiting factors for x-ray and electron microscopy
of thick, hydrated organic materials (revised)
|
This is a revised full manuscript from the previously published
version [Ultramicroscopy 184, 293--309 (2018);
doi:10.1016/j.ultramic.2017.10.003]. An erratum is submitted to the journal,
but we also wish to publish the full revised paper for readers' convenience
|
Ultramicroscopy 184, 293-309 (2018). (Reference to erratum will be
updated once published)
|
10.1016/j.ultramic.2017.10.003
| null |
physics.app-ph physics.bio-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Electron and x-ray microscopes allow one to image the entire, unlabeled
structure of hydrated materials at a resolution well beyond what visible light
microscopes can achieve. However, both approaches involve ionizing radiation,
so that radiation damage must be considered as one of the limits to imaging.
Drawing upon earlier work, we describe here a unified approach to estimating
the image contrast (and thus the required exposure and corresponding radiation
dose) in both x-ray and electron microscopy. This approach accounts for factors
such as plural and inelastic scattering, and (in electron microscopy) the use
of energy filters to obtain so-called "zero loss" images. As expected, it shows
that electron microscopy offers lower dose for specimens thinner than about 1
micron (such as for studies of macromolecules, viruses, bacteria and
archaebacteria, and thin sectioned material), while x-ray microscopy offers
superior characteristics for imaging thicker specimen such as whole eukaryotic
cells, thick-sectioned tissues, and organs. The required radiation dose scales
strongly as a function of the desired spatial resolution, allowing one to
understand the limits of live and frozen hydrated specimen imaging. Finally, we
consider the factors limiting x-ray microscopy of thicker materials, suggesting
that specimens as thick as a whole mouse brain can be imaged with x-ray
microscopes without significant image degradation should appropriate image
reconstruction methods be identified. The as-published article [Ultramicroscopy
184, 293--309 (2018); doi:10.1016/j.ultramic.2017.10.003] had some minor
mistakes that we correct here, with all changes from the as-published article
shown in blue.
|
[{'version': 'v1', 'created': 'Tue, 21 Apr 2020 14:58:44 GMT'}]
|
2020-04-22
|
[array(['Du', 'Ming', ''], dtype=object)
array(['Jacobsen', 'Chris', ''], dtype=object)]
|
4,286 |
1701.03550
|
Yong Huang
|
Yong Huang, James L. Beck and Hui Li
|
Bayesian System Identification based on Hierarchical Sparse Bayesian
Learning and Gibbs Sampling with Application to Structural Damage Assessment
|
12 figures
| null |
10.1016/j.cma.2017.01.030
| null |
stat.AP stat.ME stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The focus in this paper is Bayesian system identification based on noisy
incomplete modal data where we can impose spatially-sparse stiffness changes
when updating a structural model. To this end, based on a similar hierarchical
sparse Bayesian learning model from our previous work, we propose two Gibbs
sampling algorithms. The algorithms differ in their strategies to deal with the
posterior uncertainty of the equation-error precision parameter, but both
sample from the conditional posterior probability density functions (PDFs) for
the structural stiffness parameters and system modal parameters. The effective
dimension for the Gibbs sampling is low because iterative sampling is done from
only three conditional posterior PDFs that correspond to three parameter
groups, along with sampling of the equation-error precision parameter from
another conditional posterior PDF in one of the algorithms where it is not
integrated out as a "nuisance" parameter. A nice feature from a computational
perspective is that it is not necessary to solve a nonlinear eigenvalue problem
of a structural model. The effectiveness and robustness of the proposed
algorithms are illustrated by applying them to the IASE-ASCE Phase II simulated
and experimental benchmark studies. The goal is to use incomplete modal data
identified before and after possible damage to detect and assess
spatially-sparse stiffness reductions induced by any damage. Our past and
current focus on meeting challenges arising from Bayesian inference of
structural stiffness serve to strengthen the capability of vibration-based
structural system identification but our methods also have much broader
applicability for inverse problems in science and technology where system
matrices are to be inferred from noisy partial information about their
eigenquantities.
|
[{'version': 'v1', 'created': 'Fri, 13 Jan 2017 02:51:37 GMT'}]
|
2017-02-07
|
[array(['Huang', 'Yong', ''], dtype=object)
array(['Beck', 'James L.', ''], dtype=object)
array(['Li', 'Hui', ''], dtype=object)]
|
4,287 |
2008.12216
|
Carolin Riehl
|
Carolin Riehl, Marc Wagner
|
Hybrid static potentials in SU(2) lattice gauge theory at short
quark-antiquark separations
|
8 pages, 3 figures, 1 table, talk given at Asia-Pacific Symposium for
Lattice Field Theory (APLAT 2020), 4-7 August 2020
| null | null | null |
hep-lat hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We compute hybrid static potentials in SU(2) lattice gauge theory using a
multilevel algorithm and three different small lattice spacings. The resulting
static potentials, which are valid for quark-antiquark separations as small as
0.05 fm, are important e.g. when computing masses of heavy hybrid mesons in the
Born-Oppenheimer approximation. We also discuss and exclude possible systematic
errors from topological freezing, the finite lattice volume and glueball
decays.
|
[{'version': 'v1', 'created': 'Thu, 27 Aug 2020 16:14:10 GMT'}]
|
2020-08-28
|
[array(['Riehl', 'Carolin', ''], dtype=object)
array(['Wagner', 'Marc', ''], dtype=object)]
|
4,288 |
1811.12754
|
Gilles de Castro
|
Giuliano Boava, Gilles G. de Castro and Fernando de L. Mortari
|
Groupoid models for the C*-algebra of labelled spaces
|
23 pages
| null | null | null |
math.OA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We define a groupoid from a labelled space and show that it is isomorphic to
the tight groupoid arising from an inverse semigroup associated with the
labelled space. We then define a local homeomorphism on the tight spectrum that
is a generalization of the shift map for graphs, and show that the defined
groupoid is isomorphic to the Renault-Deaconu groupoid for this local
homeomorphism. Finally, we show that the C*-algebra of this groupoid is
isomorphic to the C*-algebra of the labelled space as introduced by Bates and
Pask.
|
[{'version': 'v1', 'created': 'Fri, 30 Nov 2018 12:06:02 GMT'}]
|
2018-12-03
|
[array(['Boava', 'Giuliano', ''], dtype=object)
array(['de Castro', 'Gilles G.', ''], dtype=object)
array(['Mortari', 'Fernando de L.', ''], dtype=object)]
|
4,289 |
1405.7850
|
German Rodrigo
|
Sebastian Buchta, Grigorios Chachamis, Petros Draggiotis, Ioannis
Malamos and German Rodrigo
|
On the singular behaviour of scattering amplitudes in quantum field
theory
|
12 pages, 2 figures. Final version to appear in JHEP
| null |
10.1007/JHEP11(2014)014
|
LPN14-078, IFIC/13-85
|
hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We analyse the singular behaviour of one-loop integrals and scattering
amplitudes in the framework of the loop--tree duality approach. We show that
there is a partial cancellation of singularities at the loop integrand level
among the different components of the corresponding dual representation that
can be interpreted in terms of causality. The remaining threshold and infrared
singularities are restricted to a finite region of the loop momentum space,
which is of the size of the external momenta and can be mapped to the
phase-space of real corrections to cancel the soft and collinear divergences.
|
[{'version': 'v1', 'created': 'Fri, 30 May 2014 13:06:31 GMT'}
{'version': 'v2', 'created': 'Tue, 4 Nov 2014 12:07:39 GMT'}]
|
2015-06-19
|
[array(['Buchta', 'Sebastian', ''], dtype=object)
array(['Chachamis', 'Grigorios', ''], dtype=object)
array(['Draggiotis', 'Petros', ''], dtype=object)
array(['Malamos', 'Ioannis', ''], dtype=object)
array(['Rodrigo', 'German', ''], dtype=object)]
|
4,290 |
1011.4298
|
Andr\'es Guzm\'an
|
Andres E. Guzm\'an, Jorge May, Hector Alvarez and Koitiro Maeda
|
All-sky Galactic radiation at 45 MHz and spectral index between 45 and
408 MHz
|
A&A accepted
|
A&A 525, A138, (2011)
|
10.1051/0004-6361/200913628
| null |
astro-ph.GA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Aims: We study the Galactic large-scale synchrotron emission by generating a
reliable all-sky spectral index map and temperature map at 45 MHz. Methods: We
use our observations, the published all-sky map at 408 MHz, and a
bibliographical compilation to produce a map corrected for zero-level offset
and extragalactic contribution. Results: We present full sky maps of the
Galactic emission at 45 MHz and the Galactic spectral index between 45 and 408
MHz with an angular resolution of 5\degs. The spectral index varies between 2.1
and 2.7, reaching values below 2.5 at low latitude because of thermal free-free
absorption and its maximum in the zone next to the Northern Spur.
|
[{'version': 'v1', 'created': 'Thu, 18 Nov 2010 21:06:15 GMT'}]
|
2010-12-10
|
[array(['Guzmán', 'Andres E.', ''], dtype=object)
array(['May', 'Jorge', ''], dtype=object)
array(['Alvarez', 'Hector', ''], dtype=object)
array(['Maeda', 'Koitiro', ''], dtype=object)]
|
4,291 |
math/0507178
|
Giambattista Giacomin
|
Francesco Caravenna, Giambattista Giacomin, Lorenzo Zambotti
|
A renewal theory approach to periodic copolymers with adsorption
|
Published in at http://dx.doi.org/10.1214/105051607000000159 the
Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute
of Mathematical Statistics (http://www.imstat.org)
|
Annals of Applied Probability 2007, Vol. 17, No. 4, 1362-1398
|
10.1214/105051607000000159
|
IMS-AAP-AAP425
|
math.PR math-ph math.MP
| null |
We consider a general model of a heterogeneous polymer chain fluctuating in
the proximity of an interface between two selective solvents. The heterogeneous
character of the model comes from the fact that the monomer units interact with
the solvents and with the interface according to some charges that they carry.
The charges repeat themselves along the chain in a periodic fashion. The main
question concerning this model is whether the polymer remains tightly close to
the interface, a phenomenon called localization, or whether there is a marked
preference for one of the two solvents, thus yielding a delocalization
phenomenon. In this paper, we present an approach that yields sharp estimates
for the partition function of the model in all regimes (localized, delocalized
and critical). This, in turn, makes possible a precise pathwise description of
the polymer measure, obtaining the full scaling limits of the model. A key
point is the closeness of the polymer measure to suitable Markov renewal
processes, Markov renewal theory being one of the central mathematical tools of
our analysis.
|
[{'version': 'v1', 'created': 'Fri, 8 Jul 2005 13:48:09 GMT'}
{'version': 'v2', 'created': 'Mon, 27 Mar 2006 15:44:13 GMT'}
{'version': 'v3', 'created': 'Wed, 24 Oct 2007 13:13:20 GMT'}]
|
2009-09-29
|
[array(['Caravenna', 'Francesco', ''], dtype=object)
array(['Giacomin', 'Giambattista', ''], dtype=object)
array(['Zambotti', 'Lorenzo', ''], dtype=object)]
|
4,292 |
1106.2568
|
Yungang Bao
|
Yungang Bao, Jinyong Zhang, Yan Zhu, Dan Tang, Yuan Ruan, Mingyu Chen,
Jianping Fan
|
HMTT: A Hybrid Hardware/Software Tracing System for Bridging Memory
Trace's Semantic Gap
|
16 papges, an extension version of ACM SIGMETRICS'08 paper
| null | null |
CAS-ICT-TECH-REPORT-20090327
|
cs.AR cs.PF
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Memory trace analysis is an important technology for architecture research,
system software (i.e., OS, compiler) optimization, and application performance
improvements. Hardware-snooping is an effective and efficient approach to
monitor and collect memory traces. Compared with software-based approaches,
memory traces collected by hardware-based approaches are usually lack of
semantic information, such as process/function/loop identifiers, virtual
address and I/O access. In this paper we propose a hybrid hardware/software
mechanism which is able to collect memory reference trace as well as semantic
information. Based on this mechanism, we designed and implemented a prototype
system called HMTT (Hybrid Memory Trace Tool) which adopts a DIMMsnooping
mechanism to snoop on memory bus and a software-controlled tracing mechanism to
inject semantic information into normal memory trace. To the best of our
knowledge, the HMTT system is the first hardware tracing system capable of
correlating memory trace with high-level events. Comprehensive validations and
evaluations show that the HMTT system has both hardware's (e.g., no distortion
or pollution) and software's advantages (e.g., flexibility and more
information).
|
[{'version': 'v1', 'created': 'Mon, 13 Jun 2011 22:29:08 GMT'}]
|
2011-06-15
|
[array(['Bao', 'Yungang', ''], dtype=object)
array(['Zhang', 'Jinyong', ''], dtype=object)
array(['Zhu', 'Yan', ''], dtype=object)
array(['Tang', 'Dan', ''], dtype=object)
array(['Ruan', 'Yuan', ''], dtype=object)
array(['Chen', 'Mingyu', ''], dtype=object)
array(['Fan', 'Jianping', ''], dtype=object)]
|
4,293 |
1607.01227
|
Nils Offen
|
Nils Offen
|
Light-cone sum rule approach for Baryon form factors
|
8 pages,7 figures accepted for publication in "Few-Body Systems"
special issue "Nucleon Resonances"
| null |
10.1007/s00601-016-1135-8
| null |
hep-ph nucl-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present the state-of-the-art of the light-cone sum rule approach to Baryon
form factors. The essence of this approach is that soft Feynman contributions
are calculated in terms of small transverse distance quantities using
dispersion relations and duality. The form factors are thus expressed in terms
of nucleon wave functions at small transverse separations, called distribution
amplitudes, without any additional parameters. The distribution amplitudes,
therefore, can be extracted from the comparison with the experimental data on
form factors and compared to the results of lattice QCD simulations.
|
[{'version': 'v1', 'created': 'Tue, 5 Jul 2016 12:50:22 GMT'}]
|
2016-08-24
|
[array(['Offen', 'Nils', ''], dtype=object)]
|
4,294 |
1306.5346
|
A. B. Dieker
|
J. G. Dai and A. B. Dieker and Xuefeng Gao
|
Validity of heavy-traffic steady-state approximations in many-server
queues with abandonment
| null | null | null | null |
math.PR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider GI/Ph/n+M parallel-server systems with a renewal arrival process,
a phase-type service time distribution, n homogenous servers, and an
exponential patience time distribution with positive rate. We show that in the
Halfin-Whitt regime, the sequence of stationary distributions corresponding to
the normalized state processes is tight. As a consequence, we establish an
interchange of heavy traffic and steady state limits for GI/Ph/n+M queues.
|
[{'version': 'v1', 'created': 'Sat, 22 Jun 2013 18:51:42 GMT'}
{'version': 'v2', 'created': 'Mon, 13 Jan 2014 03:41:46 GMT'}]
|
2014-01-14
|
[array(['Dai', 'J. G.', ''], dtype=object)
array(['Dieker', 'A. B.', ''], dtype=object)
array(['Gao', 'Xuefeng', ''], dtype=object)]
|
4,295 |
2111.06635
|
Alessandro Boselli
|
A. Boselli, M. Fossati, A. Longobardi, K. Kianfar, N.Z. Dametto, P.
Amram, J.P. Anderson, P. Andreani, S. Boissier, M. Boquien, V. Buat, G.
Consolandi, L. Cortese, P. C\^ot\'e, J.C. Cuillandre, L. Ferrarese, L.
Galbany, G. Gavazzi, S. Gwyn, G. Hensler, J. Hutchings, E.W. Peng, J. Postma,
J. Roediger, Y. Roehlly, P. Serra, G. Trinchieri
|
A Virgo Environmental Survey Tracing Ionised Gas Emission (VESTIGE).XII.
Ionised gas emission in the inner regions of lenticular galaxies
|
Accepted for publication on A&A
|
A&A 659, A46 (2022)
|
10.1051/0004-6361/202142482
| null |
astro-ph.GA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
As part of the VESTIGE survey, a blind narrow-band Ha+[NII] imaging survey of
the Virgo cluster carried out with MegaCam at the CFHT, we discovered 8 massive
lenticular galaxies with prominent ionised gas emission features in their inner
(few kpc) regions. These features are either ionised gas filaments similar to
those observed in cooling flows (2 gal), or thin discs with sizes 0.7<R(Ha)<2.0
kpc (6 gal), thus significantly smaller than those of the stellar disc. These
discs have morphological properties similar to those of the dust seen in
absorption in high-resolution HST images. Using a unique set of multifrequency
data we show that while the gas located within these inner discs is
photoionised by young stars, signaling ongoing star formation, the gas in the
filamentary structures is shock-ionised. These discs have a star formation
surface brightness similar to those observed in late-type galaxies. Because of
their reduced size, however, these lenticular galaxies are located below the
main sequence of unperturbed or cluster star-forming systems. By comparing the
dust masses measured from absorption maps in optical images, from the Balmer
decrement, or estimated by fitting the UV-to-far-IR spectral energy
distribution of the target galaxies, we confirm that those derived from optical
attenuation maps are heavily underestimated because of geometrical effects due
to the relative distribution of the absorbing dust and the emitting stars. We
have also shown that these galaxies have gas-to-dust ratios of G/D~80, and that
the star formation within these discs follows the Schmidt relation, albeit with
an efficiency reduced by a factor of ~ 2.5. Using our unique set of
multifrequency data, we discuss the possible origin of the ionised gas in these
objects, which suggests multiple and complex formation scenarios for massive
lenticular galaxies in clusters.
|
[{'version': 'v1', 'created': 'Fri, 12 Nov 2021 10:04:59 GMT'}]
|
2022-03-14
|
[array(['Boselli', 'A.', ''], dtype=object)
array(['Fossati', 'M.', ''], dtype=object)
array(['Longobardi', 'A.', ''], dtype=object)
array(['Kianfar', 'K.', ''], dtype=object)
array(['Dametto', 'N. Z.', ''], dtype=object)
array(['Amram', 'P.', ''], dtype=object)
array(['Anderson', 'J. P.', ''], dtype=object)
array(['Andreani', 'P.', ''], dtype=object)
array(['Boissier', 'S.', ''], dtype=object)
array(['Boquien', 'M.', ''], dtype=object)
array(['Buat', 'V.', ''], dtype=object)
array(['Consolandi', 'G.', ''], dtype=object)
array(['Cortese', 'L.', ''], dtype=object)
array(['Côté', 'P.', ''], dtype=object)
array(['Cuillandre', 'J. C.', ''], dtype=object)
array(['Ferrarese', 'L.', ''], dtype=object)
array(['Galbany', 'L.', ''], dtype=object)
array(['Gavazzi', 'G.', ''], dtype=object)
array(['Gwyn', 'S.', ''], dtype=object)
array(['Hensler', 'G.', ''], dtype=object)
array(['Hutchings', 'J.', ''], dtype=object)
array(['Peng', 'E. W.', ''], dtype=object)
array(['Postma', 'J.', ''], dtype=object)
array(['Roediger', 'J.', ''], dtype=object)
array(['Roehlly', 'Y.', ''], dtype=object)
array(['Serra', 'P.', ''], dtype=object)
array(['Trinchieri', 'G.', ''], dtype=object)]
|
4,296 |
1807.02549
|
Pran Nath
|
Pran Nath and Maksim Piskunov
|
Supersymmetric Dirac-Born-Infeld Axionic Inflation and Non-Gaussianity
|
23 pages. 3 figures
| null |
10.1007/JHEP02(2019)034
| null |
hep-ph astro-ph.CO gr-qc hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
An analysis is given of inflation based on a supersymmetric Dirac-Born-Infeld
(DBI) action in an axionic landscape. The DBI model we discuss involves a
landscape of chiral superfields with one $U(1)$ shift symmetry which is broken
by instanton type non-perturbative terms in the superpotential. Breaking of the
shift symmetry leads to one pseudo-Nambu-Goldstone-boson which acts as the
inflaton while the remaining normalized phases of the chiral fields generically
labeled axions are invariant under the $U(1)$ shift symmetry. The analysis is
carried out in the vacuum with stabilized saxions, which are the magnitudes of
the chiral fields. Regions of the parameter space where slow-roll inflation
occurs are exhibited and the spectral indices as well as the ratio of the
tensor to the scalar power spectrum are computed. An interesting aspect of
supersymmetric DBI models analyzed is that in most of the parameter space
tensor to scalar ratio and scalar spectral index are consistent with Planck
data if slow roll occurs and is not eternal. Also interesting is that the ratio
of the tensor to the scalar power spectrum can be large and can lie close to
the experimental upper limit and thus testable in improved experiment.
Non-Gaussianity in this class of models is explored.
|
[{'version': 'v1', 'created': 'Fri, 6 Jul 2018 19:07:07 GMT'}]
|
2019-02-20
|
[array(['Nath', 'Pran', ''], dtype=object)
array(['Piskunov', 'Maksim', ''], dtype=object)]
|
4,297 |
astro-ph/0012121
|
Sylvain Veilleux
|
Sylvain Veilleux (University of Maryland)
|
The Starburst-AGN Connection
|
7 pages; to appear in the proceedings of the Ringberg meeting
"Starbursts - Near and Far", September 2000
| null | null | null |
astro-ph
| null |
The issue of a starburst-AGN connection in local and distant galaxies is
relevant for understanding galaxy formation and evolution, the star formation
and metal enrichment history of the universe, the origin of the extragalactic
background at low and high energies, and the origin of nuclear activity in
galaxies. Here I review some of the observational evidence recently brought
forward in favor of a connection between the starburst and AGN phenomena. I
conclude by raising a number of questions concerning the exact nature of this
connection.
|
[{'version': 'v1', 'created': 'Wed, 6 Dec 2000 00:12:18 GMT'}]
|
2007-05-23
|
[array(['Veilleux', 'Sylvain', '', 'University of Maryland'], dtype=object)]
|
4,298 |
quant-ph/9902022
|
Noah Linden
|
Adrian Kent, Noah Linden and Serge Massar
|
Optimal Entanglement Enhancement for Mixed States
|
Final version: to appear in Phys. Rev. Lett
|
Phys.Rev.Lett. 83 (1999) 2656-2659
|
10.1103/PhysRevLett.83.2656
|
DAMTP-1999-15, ULB-TH/99-02
|
quant-ph
| null |
We consider the actions of protocols involving local quantum operations and
classical communication (LQCC) on a single system consisting of two separated
qubits. We give a complete description of the orbits of the space of states
under LQCC and characterise the representatives with maximal entanglement of
formation. We thus obtain a LQCC entanglement concentration protocol for a
single given state (pure or mixed) of two qubits which is optimal in the sense
that the protocol produces, with non-zero probability, a state of maximal
possible entanglement of formation. This defines a new entanglement measure,
the maximum extractable entanglement.
|
[{'version': 'v1', 'created': 'Fri, 5 Feb 1999 16:43:58 GMT'}
{'version': 'v2', 'created': 'Wed, 1 Sep 1999 13:06:27 GMT'}
{'version': 'v3', 'created': 'Sat, 4 Sep 1999 22:59:24 GMT'}]
|
2009-10-31
|
[array(['Kent', 'Adrian', ''], dtype=object)
array(['Linden', 'Noah', ''], dtype=object)
array(['Massar', 'Serge', ''], dtype=object)]
|
4,299 |
1112.4693
|
Jing-Ling Chen
|
Jing-Ling Chen, Hong-Yi Su, Xiang-Jun Ye, Chunfeng Wu, and C. H. Oh
|
Einstein-Podolsky-Rosen Steerability Criterion for Two-Qubit Density
Matrices
|
4 pages, 3 figure. 3 figures are added. Comments are welcome
| null | null | null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We propose a sufficient criterion
${S}=\lambda_1+\lambda_2-(\lambda_1-\lambda_2)^2<0$ to detect
Einstein-Podolsky-Rosen steering for arbitrary two-qubit density matrix
$\rho_{AB}$. Here $\lambda_1,\lambda_2$ are respectively the minimal and the
second minimal eigenvalues of $\rho^{T_B}_{AB}$, which is the partial transpose
of $\rho_{AB}$. By investigating several typical two-qubit states such as the
isotropic state, Bell-diagonal state, maximally entangled mixed state, etc., we
show this criterion works efficiently and can make reasonable predictions for
steerability. We also present a mixed state of which steerability always
exists, and compare the result with the violation of steering inequalities.
|
[{'version': 'v1', 'created': 'Tue, 20 Dec 2011 14:12:48 GMT'}
{'version': 'v2', 'created': 'Wed, 28 Dec 2011 03:48:23 GMT'}
{'version': 'v3', 'created': 'Sun, 1 Jan 2012 12:15:32 GMT'}
{'version': 'v4', 'created': 'Sat, 28 Jan 2012 08:06:26 GMT'}]
|
2012-01-31
|
[array(['Chen', 'Jing-Ling', ''], dtype=object)
array(['Su', 'Hong-Yi', ''], dtype=object)
array(['Ye', 'Xiang-Jun', ''], dtype=object)
array(['Wu', 'Chunfeng', ''], dtype=object)
array(['Oh', 'C. H.', ''], dtype=object)]
|
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.