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|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1,300 |
2109.06371
|
Guenther Walther
|
Guenther Walther
|
Tail bounds for empirically standardized sums
| null | null | null | null |
math.ST stat.ME stat.TH
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Exponential tail bounds for sums play an important role in statistics, but
the example of the $t$-statistic shows that the exponential tail decay may be
lost when population parameters need to be estimated from the data. However, it
turns out that if Studentizing is accompanied by estimating the location
parameter in a suitable way, then the $t$-statistic regains the exponential
tail behavior. Motivated by this example, the paper analyzes other ways of
empirically standardizing sums and establishes tail bounds that are
sub-Gaussian or even closer to normal for the following settings:
Standardization with Studentized contrasts for normal observations,
standardization with the log likelihood ratio statistic for observations from
an exponential family, and standardization via self-normalization for
observations from a symmetric distribution with unknown center of symmetry. The
latter standardization gives rise to a novel scan statistic for heteroscedastic
data whose asymptotic power is analyzed in the case where the observations have
a log-concave distribution.
|
[{'version': 'v1', 'created': 'Mon, 13 Sep 2021 23:58:42 GMT'}
{'version': 'v2', 'created': 'Wed, 2 Feb 2022 17:34:18 GMT'}
{'version': 'v3', 'created': 'Sat, 19 Mar 2022 17:59:35 GMT'}]
|
2022-03-22
|
[array(['Walther', 'Guenther', ''], dtype=object)]
|
1,301 |
0708.1964
|
Mihai Oltean
|
Mihai Oltean, Oana Muntean
|
Solving the subset-sum problem with a light-based device
|
14 pages, 6 figures, Natural Computing, 2007
|
Natural Computing, Springer-Verlag, Vol 8, Issue 2, pp. 321-331,
2009
|
10.1007/s11047-007-9059-3
| null |
cs.AR cs.AI cs.DC
| null |
We propose a special computational device which uses light rays for solving
the subset-sum problem. The device has a graph-like representation and the
light is traversing it by following the routes given by the connections between
nodes. The nodes are connected by arcs in a special way which lets us to
generate all possible subsets of the given set. To each arc we assign either a
number from the given set or a predefined constant. When the light is passing
through an arc it is delayed by the amount of time indicated by the number
placed in that arc. At the destination node we will check if there is a ray
whose total delay is equal to the target value of the subset sum problem (plus
some constants).
|
[{'version': 'v1', 'created': 'Tue, 14 Aug 2007 21:46:32 GMT'}]
|
2015-09-11
|
[array(['Oltean', 'Mihai', ''], dtype=object)
array(['Muntean', 'Oana', ''], dtype=object)]
|
1,302 |
1704.03417
|
Nirakar Sahoo
|
Subhaditya Bhattacharya, Nirakar Sahoo and Narendra Sahu
|
Singlet-Doublet Fermionic Dark Matter, Neutrino Mass and Collider
Signatures
|
New references added,Accepted for publication in Physical Review D
|
Phys. Rev. D 96, 035010 (2017)
|
10.1103/PhysRevD.96.035010
| null |
hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We propose a minimal extension of the standard model (SM) by including a
scalar triplet with hypercharge 2 and two vector-like leptons: one doublet and
a singlet, to explain simulatenously the non-zero neutrino mass and dark matter
(DM) content of the Universe. The DM emerges out as a mixture of the neutral
component of vector-like lepton doublet and singlet, being odd under a discrete
$Z_2$ symmetry. After electroweak symmetry breaking the triplet scalar gets an
induced vev, which give Majorana masses not only to the light neutrinos but
also to the DM. Due to the Majorana mass of DM, the $Z$ mediated elastic
scattering with nucleon is forbidden. However, the Higgs mediated direct
detection cross-section of the DM gives an excellent opportunity to probe it at
Xenon-1T. The DM can not be detected at collider. However, the charged partner
of the DM (often next-to-lightest stable particle) can give large dispalced
vertex signature at the Large Hadron Collider (LHC).
|
[{'version': 'v1', 'created': 'Tue, 11 Apr 2017 17:00:23 GMT'}
{'version': 'v2', 'created': 'Wed, 26 Jul 2017 16:51:56 GMT'}]
|
2017-08-23
|
[array(['Bhattacharya', 'Subhaditya', ''], dtype=object)
array(['Sahoo', 'Nirakar', ''], dtype=object)
array(['Sahu', 'Narendra', ''], dtype=object)]
|
1,303 |
1712.00425
|
K. Anton Feenstra
|
Sanne Abeln, Jaap Heringa, K. Anton Feenstra
|
Strategies for protein structure model generation
| null | null | null | null |
q-bio.BM
|
http://creativecommons.org/licenses/by/4.0/
|
This chapter deals with approaches for protein three-dimensional structure
prediction, starting out from a single input sequence with unknown struc- ture,
the 'query' or 'target' sequence. Both template based and template free
modelling techniques are treated, and how resulting structural models may be
selected and refined. We give a concrete flowchart for how to de- cide which
modelling strategy is best suited in particular circumstances, and which steps
need to be taken in each strategy. Notably, the ability to locate a suitable
structural template by homology or fold recognition is crucial; without this
models will be of low quality at best. With a template avail- able, the quality
of the query-template alignment crucially determines the model quality. We also
discuss how other, courser, experimental data may be incorporated in the
modelling process to alleviate the problem of missing template structures.
Finally, we discuss measures to predict the quality of models generated.
|
[{'version': 'v1', 'created': 'Fri, 1 Dec 2017 17:48:49 GMT'}]
|
2017-12-04
|
[array(['Abeln', 'Sanne', ''], dtype=object)
array(['Heringa', 'Jaap', ''], dtype=object)
array(['Feenstra', 'K. Anton', ''], dtype=object)]
|
1,304 |
1010.2138
|
Christine Michel
|
Christine Michel (LIESP), Elise Lavou\'e (SICOMOR)
|
Combiner suivi de l'activite? et partage d'exp\'eriences en
apprentissage par projet pour les acteurs tuteurs et apprenants
|
8p
|
7\`eme Colloque Technologies de l'Information et de la
Communication pour l'Enseignement (TICE 2010), Nancy : France (2010)
| null |
Axe 4
|
cs.CY
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Our work aims to study tools offered to students and tutors involved in
face-to-face or blended project- based learning activities. Project-based
learning is often applied in the case of complex learning (i.e. which aims at
making learners acquire various linked skills or develop their behaviours). In
comparison to traditional learning, this type of learning relies on
co-development, collective responsibility and co-operation. Learners are the
principal actors of their learning. These trainings rest on rich and complex
organizations, particularly for tutors, and it is difficult to apply innovative
educational strategies. Our aim, in a bottom-up approach, is (1) to observe,
according to Knowledge Management methods, a course characterized by these
three criteria. The observed course concerns project management learning. Its
observation allows us (2) to highlight and to analyze the problems encountered
by the actors (students, tutors, designers) and (3) to propose tools to solve
or improve them. We particularly study the relevance and the limits of the
existing monitoring and experience sharing tools. We finally propose a result
in the form of the tool MEShaT (Monitoring and Experience Sharing Tool) and end
on the perspectives offered by these researches.
|
[{'version': 'v1', 'created': 'Mon, 11 Oct 2010 15:34:46 GMT'}]
|
2016-11-27
|
[array(['Michel', 'Christine', '', 'LIESP'], dtype=object)
array(['Lavoué', 'Elise', '', 'SICOMOR'], dtype=object)]
|
1,305 |
2102.09450
|
Kishore Thapliyal
|
Kishore Thapliyal and Jan Perina Jr
|
Ideal pairing of the Stokes and anti-Stokes photons in the Raman process
|
Conditions for having the Stokes and anti-Stokes fields composed of
only photon pairs in the Raman process analogous to twin beams in parametric
down-conversion are obtained. 9 figures and 17 pages
|
Phys. Rev. A 103, 033708 (2021)
|
10.1103/PhysRevA.103.033708
| null |
quant-ph
|
http://creativecommons.org/licenses/by/4.0/
|
A quantum model of the Raman process with the independent Stokes and
anti-Stokes nonlinear interactions is developed to study nonclassical
correlations between the photons in the Stokes and anti-Stokes fields. The role
of the laser pump amplitude, the ratio of the Stokes and anti-Stokes coupling
constants and the population and losses of the vibrational mode in forming the
correlations is elucidated. The $ g^{(2)} $ intensity cross-correlation
function, noise-reduction-factor, two-mode principal squeezing variance,
logarithmic negativity, non-classicality depth, steering parameter and the Bell
parameter are analyzed side-by-side to shed light to the correlations between
the Stokes and anti-Stokes fields. Conditions for having the Stokes and
anti-Stokes fields composed of only photon pairs, similarly as it occurs in
twin beams in parametric down-conversion, are revealed. They allow for nonzero
mean thermal phonon numbers.
|
[{'version': 'v1', 'created': 'Thu, 18 Feb 2021 16:15:01 GMT'}
{'version': 'v2', 'created': 'Thu, 25 Mar 2021 17:08:40 GMT'}]
|
2021-03-26
|
[array(['Thapliyal', 'Kishore', ''], dtype=object)
array(['Perina', 'Jan', 'Jr'], dtype=object)]
|
1,306 |
1204.1434
|
Guang-Ming Zhang
|
Yu Liu, Huan Li, Guang-Ming Zhang, and L. Yu
|
D-wave superconductivity induced by short-range antiferromagnetic
correlations in the two-dimensional Kondo lattice model
|
6 pages, 6 figures
|
Physical Review B 86, 024526 (2012)
|
10.1103/PhysRevB.86.024526
| null |
cond-mat.str-el cond-mat.supr-con
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The possible heavy fermion superconductivity is carefully reexamined in the
two-dimensional Kondo lattice model with an antiferromagnetic Heisenberg
superexchange between local magnetic moments. In order to establish an
effective mean field theory in the limit of the paramagnetic heavy Fermi liquid
and near the half-filling case, we find that the spinon singlet pairing from
the local antiferromagnetic short-range correlations can reduce the ground
state energy substantially. In the presence of the Kondo screening effect, the
Cooper pairs between the conduction electrons is induced. Depending on the
ratio of the Heisenberg and the Kondo exchange couplings, the resulting
superconducting state is characterized by either a d-wave nodal or d-wave
nodeless state, and a continuous phase transition exists between these two
states. These results are related to some quasi-two dimensional heary fermion
superconductors.
|
[{'version': 'v1', 'created': 'Fri, 6 Apr 2012 08:36:06 GMT'}
{'version': 'v2', 'created': 'Wed, 1 Aug 2012 01:59:15 GMT'}]
|
2012-08-02
|
[array(['Liu', 'Yu', ''], dtype=object)
array(['Li', 'Huan', ''], dtype=object)
array(['Zhang', 'Guang-Ming', ''], dtype=object)
array(['Yu', 'L.', ''], dtype=object)]
|
1,307 |
hep-ph/0407282
|
Alexander Lenz
|
V.M.Braun and A.Lenz
|
On the SU(3) Symmetry-Breaking Corrections to Meson Distribution
Amplitudes
|
15 pages,4 figures
|
Phys.Rev. D70 (2004) 074020
|
10.1103/PhysRevD.70.074020
| null |
hep-ph
| null |
We consider constraints on the momentum fraction of the $K$ and $K^*$ meson
carried by the strange quark that follow from exact operator identities,
similar to those for the divergence of the quark part of the QCD
energy-momentum tensor. The existing QCD sum rule estimates are reanalyzed in
this context. Our conclusions essentially support the constituent quark-model
picture where the momentum fraction is roughly proportional to the constituent
quark mass, but the asymmetry turns out to be smaller compared to the naive
quark model estimates. As a byproduct of this study, we calculate the
SU(3)-breaking quark-antiquark-gluon matrix elements that determine the leading
conformal spin contributions to the asymmetry in twist-four distribution
amplitudes of strange mesons $K$ and $K^*$, and also update the estimate for
the SU(3) breaking for the quark-antiquark-gluon vacuum condensate.
|
[{'version': 'v1', 'created': 'Fri, 23 Jul 2004 12:39:29 GMT'}]
|
2009-11-10
|
[array(['Braun', 'V. M.', ''], dtype=object)
array(['Lenz', 'A.', ''], dtype=object)]
|
1,308 |
2209.11672
|
Josiah Lutton
|
Adam Platt, E. Josiah Lutton, Edward Offord, Till Bretschneider
|
MiCellAnnGELo: Annotate microscopy time series of complex cell surfaces
with 3D Virtual Reality
|
For associated code and sample data, see
https://github.com/CellDynamics/MiCellAnnGELo.git
| null | null | null |
cs.HC
|
http://creativecommons.org/licenses/by-nc-nd/4.0/
|
Summary: Advances in 3D live cell microscopy are enabling high-resolution
capture of previously unobserved processes. Unleashing the power of modern
machine learning methods to fully benefit from these technologies is, however,
frustrated by the difficulty of manually annotating 3D training data.
MiCellAnnGELo virtual reality software offers an immersive environment for
viewing and interacting with 4D microscopy data, including efficient tools for
annotation. We present tools for labelling cell surfaces with a wide range of
applications, including cell motility, endocytosis, and transmembrane
signalling. Availability and implementation: MiCellAnnGELo employs the cross
platform (Mac/Unix/Windows) Unity game engine and is available under the MIT
licence at https://github.com/CellDynamics/MiCellAnnGELo.git, together with
sample data and demonstration movies. MiCellAnnGELo can be run in desktop mode
on a 2D screen or in 3D using a standard VR headset with compatible GPU.
|
[{'version': 'v1', 'created': 'Fri, 23 Sep 2022 16:02:00 GMT'}
{'version': 'v2', 'created': 'Fri, 9 Dec 2022 15:25:45 GMT'}]
|
2022-12-12
|
[array(['Platt', 'Adam', ''], dtype=object)
array(['Lutton', 'E. Josiah', ''], dtype=object)
array(['Offord', 'Edward', ''], dtype=object)
array(['Bretschneider', 'Till', ''], dtype=object)]
|
1,309 |
2305.16544
|
Nicholas Gabriel
|
Nicholas A. Gabriel, David A. Broniatowski, Neil F. Johnson
|
Inductive detection of Influence Operations via Graph Learning
| null | null | null | null |
cs.LG cs.CR cs.SI physics.soc-ph
|
http://creativecommons.org/licenses/by-nc-nd/4.0/
|
Influence operations are large-scale efforts to manipulate public opinion.
The rapid detection and disruption of these operations is critical for healthy
public discourse. Emergent AI technologies may enable novel operations which
evade current detection methods and influence public discourse on social media
with greater scale, reach, and specificity. New methods with inductive learning
capacity will be needed to identify these novel operations before they
indelibly alter public opinion and events. We develop an inductive learning
framework which: 1) determines content- and graph-based indicators that are not
specific to any operation; 2) uses graph learning to encode abstract signatures
of coordinated manipulation; and 3) evaluates generalization capacity by
training and testing models across operations originating from Russia, China,
and Iran. We find that this framework enables strong cross-operation
generalization while also revealing salient
indicators$\unicode{x2013}$illustrating a generic approach which directly
complements transductive methodologies, thereby enhancing detection coverage.
|
[{'version': 'v1', 'created': 'Fri, 26 May 2023 00:03:51 GMT'}]
|
2023-05-29
|
[array(['Gabriel', 'Nicholas A.', ''], dtype=object)
array(['Broniatowski', 'David A.', ''], dtype=object)
array(['Johnson', 'Neil F.', ''], dtype=object)]
|
1,310 |
hep-th/0611340
|
Lachezar Georgiev
|
Lachezar S. Georgiev
|
Towards a universal set of topologically protected gates for quantum
computation with Pfaffian qubits
|
57 pages, 26 EPS figures, Latex2e with elsart class package; v2: one
remark added and some misprints corrected
|
Nucl.Phys.B789:552-590,2008
|
10.1016/j.nuclphysb.2007.07.016
| null |
hep-th cond-mat.mes-hall quant-ph
| null |
We review the topological quantum computation scheme of Das Sarma et al. from
the perspective of the conformal field theory for the two-dimensional critical
Ising model. This scheme originally used the monodromy properties of the
non-Abelian excitations in the Pfaffian quantum Hall state to construct
elementary qubits and execute logical NOT on them. We extend the scheme of Das
Sarma et al. by exploiting the explicit braiding transformations for the
Pfaffian wave functions containing 4 and 6 quasiholes to implement, for the
first time in this context, the single-qubit Hadamard and phase gates and the
two-qubit Controlled-NOT gate over Pfaffian qubits in a topologically protected
way. In more detail, we explicitly construct the unitary representations of the
braid groups B_4, B_6 and B_8 and use the elementary braid matrices to
implement one-, two- and three-qubit gates. We also propose to construct a
topologically protected Toffoli gate, in terms of a braid-group based
Controlled-Controlled-Z gate precursor. Finally we discuss some difficulties
arising in the embedding of the Clifford gates and address several important
questions about topological quantum computation in general.
|
[{'version': 'v1', 'created': 'Thu, 30 Nov 2006 08:41:48 GMT'}
{'version': 'v2', 'created': 'Tue, 10 Jul 2007 12:14:49 GMT'}]
|
2008-11-26
|
[array(['Georgiev', 'Lachezar S.', ''], dtype=object)]
|
1,311 |
1404.4400
|
Brendan Farrell
|
Holger Boche and Brendan Farrell
|
Strong Divergence of Reconstruction Procedures for the Paley-Wiener
Space $\mathcal{PW}^1_\pi$ and the Hardy Space $\mathcal{H}^1$
|
Revision of a paper to appear in the Journal of Approximation Theory
| null | null | null |
cs.IT math.IT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Previous results on certain sampling series have left open if divergence only
occurs for certain subsequences or, in fact, in the limit. Here we prove that
divergence occurs in the limit.
We consider three canonical reconstruction methods for functions in the
Paley-Wiener space $\mathcal{PW}^1_\pi$. For each of these we prove an instance
when the reconstruction diverges in the limit. This is a much stronger
statement than previous results that provide only $\limsup$ divergence. We also
address reconstruction for functions in the Hardy space $\mathcal{H}^1$ and
show that for any subsequence of the natural numbers there exists a function in
$\mathcal{H}^1$ for which reconstruction diverges in $\limsup$. For two of
these sampling series we show that when divergence occurs, the sampling series
has strong oscillations so that the maximum and the minimum tend to positive
and negative infinity. Our results are of interest in functional analysis
because they go beyond the type of result that can be obtained using the
Banach-Steinhaus Theorem. We discuss practical implications of this work; in
particular the work shows that methods using specially chosen subsequences of
reconstructions cannot yield convergence for the Paley-Wiener Space
$\mathcal{PW}^1_\pi$.
|
[{'version': 'v1', 'created': 'Wed, 16 Apr 2014 23:33:21 GMT'}]
|
2014-04-18
|
[array(['Boche', 'Holger', ''], dtype=object)
array(['Farrell', 'Brendan', ''], dtype=object)]
|
1,312 |
1411.7311
|
Leron Borsten
|
L. Borsten, K. Br\'adler, and M. J. Duff
|
The structure of superqubit states
|
12 pages, updated to match published version. RIVISTA DEL NUOVO
CIMENTO, 38, 2015, Imperial/TP/2014/mjd/04
|
Revista del Nuovo Cimento, 38, 2015
|
10.1393/ncr/i2015-10115-y
|
Imperial/TP/2014/mjd/04
|
quant-ph hep-th math-ph math.MP math.RT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Superqubits provide a supersymmetric generalisation of the conventional qubit
in quantum information theory. After a review of their current status, we
address the problem of generating entangled states. We introduce the global
unitary supergroup $\text{UOSp}((3^n+1)/2 | (3^n-1)/2)$ for an $n$-superqubit
system, which contains as a subgroup the local unitary supergroup
$[\text{UOSp}(2|1)]^n$. While for $4>n>1$ the bosonic subgroup in
$\text{UOSp}((3^n+1)/2 | (3^n-1)/2)$ does not contain the standard global
unitary group $\text{SU}(2^n)$, it does have an
$\text{USp}(2^n)\subset\text{SU}(2^n)$ subgroup which acts transitively on the
$n$-qubit subspace, as required for consistency with the conventional
multi-qubit framework. For two superqubits the $\text{UOSp}(5|4)$ action is
used to generate entangled states from the "bosonic" separable state
$|00\rangle$.
|
[{'version': 'v1', 'created': 'Wed, 26 Nov 2014 17:46:26 GMT'}
{'version': 'v2', 'created': 'Wed, 6 Jan 2016 21:45:53 GMT'}]
|
2016-02-02
|
[array(['Borsten', 'L.', ''], dtype=object)
array(['Brádler', 'K.', ''], dtype=object)
array(['Duff', 'M. J.', ''], dtype=object)]
|
1,313 |
1502.05401
|
Yasunori Nomura
|
Yasunori Nomura
|
A Note on Boltzmann Brains
|
10 pages, 1 figure; discussion in Section 4 modified and expanded
| null |
10.1016/j.physletb.2015.08.029
|
UCB-PTH-15/02
|
hep-th gr-qc
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Understanding the observed arrow of time is equivalent, under general
assumptions, to explaining why Boltzmann brains do not overwhelm ordinary
observers. It is usually thought that this provides a condition on the decay
rate of every cosmologically accessible de Sitter vacuum, and that this
condition is determined by the production rate of Boltzmann brains calculated
using semiclassical theory built on each such vacuum. We argue, based on a
recently developed picture of microscopic quantum gravitational degrees of
freedom, that this thinking needs to be modified. In particular, depending on
the structure of the fundamental theory, the decay rate of a de Sitter vacuum
may not have to satisfy any condition except for the one imposed by the
Poincare recurrence. The framework discussed here also addresses the question
of whether a Minkowski vacuum may produce Boltzmann brains.
|
[{'version': 'v1', 'created': 'Wed, 18 Feb 2015 21:00:12 GMT'}
{'version': 'v2', 'created': 'Mon, 2 Mar 2015 22:37:24 GMT'}]
|
2015-09-30
|
[array(['Nomura', 'Yasunori', ''], dtype=object)]
|
1,314 |
1511.08531
|
Chunhua Shen
|
Sakrapee Paisitkriangkrai, Lin Wu, Chunhua Shen, Anton van den Hengel
|
Structured learning of metric ensembles with application to person
re-identification
|
16 pages. Extended version of "Learning to Rank in Person
Re-Identification With Metric Ensembles", at
http://www.cv-foundation.org/openaccess/content_cvpr_2015/html/Paisitkriangkrai_Learning_to_Rank_2015_CVPR_paper.html.
arXiv admin note: text overlap with arXiv:1503.01543
| null | null | null |
cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Matching individuals across non-overlapping camera networks, known as person
re-identification, is a fundamentally challenging problem due to the large
visual appearance changes caused by variations of viewpoints, lighting, and
occlusion. Approaches in literature can be categoried into two streams: The
first stream is to develop reliable features against realistic conditions by
combining several visual features in a pre-defined way; the second stream is to
learn a metric from training data to ensure strong inter-class differences and
intra-class similarities. However, seeking an optimal combination of visual
features which is generic yet adaptive to different benchmarks is a unsoved
problem, and metric learning models easily get over-fitted due to the scarcity
of training data in person re-identification. In this paper, we propose two
effective structured learning based approaches which explore the adaptive
effects of visual features in recognizing persons in different benchmark data
sets. Our framework is built on the basis of multiple low-level visual features
with an optimal ensemble of their metrics. We formulate two optimization
algorithms, CMCtriplet and CMCstruct, which directly optimize evaluation
measures commonly used in person re-identification, also known as the
Cumulative Matching Characteristic (CMC) curve.
|
[{'version': 'v1', 'created': 'Fri, 27 Nov 2015 00:10:59 GMT'}
{'version': 'v2', 'created': 'Tue, 24 May 2016 04:48:59 GMT'}]
|
2016-05-25
|
[array(['Paisitkriangkrai', 'Sakrapee', ''], dtype=object)
array(['Wu', 'Lin', ''], dtype=object)
array(['Shen', 'Chunhua', ''], dtype=object)
array(['Hengel', 'Anton van den', ''], dtype=object)]
|
1,315 |
1911.08980
|
Felix Jost
|
Felix Jost, Enrico Schalk, Daniela Weber, Hartmut Doehner, Thomas
Fischer, Sebastian Sager
|
Model-based optimal AML consolidation treatment
| null | null | null | null |
q-bio.QM q-bio.TO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Neutropenia is an adverse event commonly arising during intensive
chemotherapy of acute myeloid leukemia (AML). It is often associated with
infectious complications. Mathematical modeling, simulation, and optimization
of the treatment process would be a valuable tool to support clinical decision
making, potentially resulting in less severe side effects and deeper
remissions. However, until now, there has been no validated mathematical model
available to simulate the effect of chemotherapy treatment on white blood cell
(WBC) counts and leukemic cells simultaneously. We developed a population
pharmacokinetic/pharmacodynamic (PK/PD) model combining a myelosuppression
model considering endogenous granulocyte-colony stimulating factor (G-CSF), a
PK model for cytarabine (Ara-C), a subcutaneous absorption model for exogenous
G-CSF, and a two-compartment model for leukemic blasts. This model was fitted
to data of 44 AML patients during consolidation therapy with a novel Ara-C plus
G-CSF schedule from a phase II controlled clinical trial. Additionally, we were
able to optimize treatment schedules with respect to disease progression, WBC
nadirs, and the amount of Ara-C and G-CSF. The developed PK/PD model provided
good prediction accuracies and an interpretation of the interaction between
WBCs, G-CSF, and blasts. For 14 patients (those with available bone marrow
blast counts), we achieved a median 4.2-fold higher WBC count at nadir, which
is the most critical time during consolidation therapy. The simulation results
showed that relative bone marrow blast counts remained below the clinically
important threshold of 5%, with a median of 60% reduction in Ara-C.
|
[{'version': 'v1', 'created': 'Wed, 20 Nov 2019 15:46:42 GMT'}
{'version': 'v2', 'created': 'Sat, 18 Apr 2020 12:02:33 GMT'}]
|
2020-04-21
|
[array(['Jost', 'Felix', ''], dtype=object)
array(['Schalk', 'Enrico', ''], dtype=object)
array(['Weber', 'Daniela', ''], dtype=object)
array(['Doehner', 'Hartmut', ''], dtype=object)
array(['Fischer', 'Thomas', ''], dtype=object)
array(['Sager', 'Sebastian', ''], dtype=object)]
|
1,316 |
2010.07259
|
Stefan Zwaard S.L.W.
|
Stefan Zwaard, Henk-Jan Boele, Hani Alers, Christos Strydis, Casey
Lew-Williams, and Zaid Al-Ars
|
Privacy-Preserving Object Detection & Localization Using Distributed
Machine Learning: A Case Study of Infant Eyeblink Conditioning
|
This is a preprint version of "Privacy-Preserving Object Detection &
Localization Using Distributed Machine Learning: A Case Study of Infant
Eyeblink Conditioning". This work consists of 12 pages including refs and, 4
tables and 7 figures
| null | null | null |
cs.LG cs.CR cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Distributed machine learning is becoming a popular model-training method due
to privacy, computational scalability, and bandwidth capacities. In this work,
we explore scalable distributed-training versions of two algorithms commonly
used in object detection. A novel distributed training algorithm using Mean
Weight Matrix Aggregation (MWMA) is proposed for Linear Support Vector Machine
(L-SVM) object detection based in Histogram of Orientated Gradients (HOG). In
addition, a novel Weighted Bin Aggregation (WBA) algorithm is proposed for
distributed training of Ensemble of Regression Trees (ERT) landmark
localization. Both algorithms do not restrict the location of model aggregation
and allow custom architectures for model distribution. For this work, a
Pool-Based Local Training and Aggregation (PBLTA) architecture for both
algorithms is explored. The application of both algorithms in the medical field
is examined using a paradigm from the fields of psychology and neuroscience -
eyeblink conditioning with infants - where models need to be trained on facial
images while protecting participant privacy. Using distributed learning, models
can be trained without sending image data to other nodes. The custom software
has been made available for public use on GitHub:
https://github.com/SLWZwaard/DMT. Results show that the aggregation of models
for the HOG algorithm using MWMA not only preserves the accuracy of the model
but also allows for distributed learning with an accuracy increase of 0.9%
compared with traditional learning. Furthermore, WBA allows for ERT model
aggregation with an accuracy increase of 8% when compared to single-node
models.
|
[{'version': 'v1', 'created': 'Wed, 14 Oct 2020 17:33:28 GMT'}]
|
2020-10-15
|
[array(['Zwaard', 'Stefan', ''], dtype=object)
array(['Boele', 'Henk-Jan', ''], dtype=object)
array(['Alers', 'Hani', ''], dtype=object)
array(['Strydis', 'Christos', ''], dtype=object)
array(['Lew-Williams', 'Casey', ''], dtype=object)
array(['Al-Ars', 'Zaid', ''], dtype=object)]
|
1,317 |
hep-lat/9702014
|
Kieran Holland
|
K. Holland and U.-J. Wiese (MIT)
|
Quark Confinement in C-periodic Cylinders at Temperatures above T_c
|
8 pages, Latex, no figures
|
Phys.Lett. B415 (1997) 179-185
|
10.1016/S0370-2693(97)01237-9
|
MIT Preprint, CTP 2608
|
hep-lat hep-ph hep-th
| null |
Due to the Gauss law, a single quark cannot exist in a periodic volume, while
it can exist with C-periodic boundary conditions. In a C-periodic cylinder of
cross section A = L_x L_y and length L_z >> L_x, L_y containing deconfined
gluons, regions of different high temperature Z(3) phases are aligned along the
z-direction, separated by deconfined- deconfined interfaces. In this geometry,
the free energy of a single static quark diverges in proportion to L_z. Hence,
paradoxically, the quark is confined, although the temperature T is larger than
T_c. At T around T_c, the confined phase coexists with the three deconfined
phases. The deconfined-deconfined interfaces can be completely or incompletely
wet by the confined phase. The free energy of a quark behaves differently in
these two cases. In contrast to claims in the literature, our results imply
that deconfined-deconfined interfaces are not Euclidean artifacts, but have
observable consequences in a system of hot gluons.
|
[{'version': 'v1', 'created': 'Thu, 13 Feb 1997 20:01:15 GMT'}]
|
2009-10-30
|
[array(['Holland', 'K.', '', 'MIT'], dtype=object)
array(['Wiese', 'U. -J.', '', 'MIT'], dtype=object)]
|
1,318 |
1009.5102
|
Young S Kim
|
Y.S.Kim
|
Internal Space-time Symmetries of Particles derivable from Periodic
Systems in Optics
|
Latex 15 pages, 5 eps figures. Invited paper presented at the 10th
Int'l Conference on Quantum Optics and Quantum Information (Kiev, Ukraine,
May 2010), to be published in the proceedings
| null |
10.1134/S0030400X11120149
| null |
math-ph hep-th math.MP quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
While modern optics is largely a physics of harmonic oscillators and
two-by-two matrices, it is possible to learn about some hidden properties of
the two-by-two matrix from optical systems. Since two-by-two matrices can be
divided into three conjugate classes depending on their traces, optical systems
force us to establish continuity from one class to another. It is noted that
those three classes are equivalent to three different branches of Wigner's
little groups dictating the internal space-time symmetries massive, massless,
and imaginary-mass particles. It is shown that the periodic systems in optics
can also be described by have the same class-based matrix algebra. The optical
system allow us to make continuous, but not analytic, transitions from massiv
to massless, and massless to imaginary-mass cases.
|
[{'version': 'v1', 'created': 'Sun, 26 Sep 2010 15:37:14 GMT'}]
|
2015-05-20
|
[array(['Kim', 'Y. S.', ''], dtype=object)]
|
1,319 |
1906.00122
|
Joshua Farrell
|
Joshua W. E. Farrell
|
Generalising the Wallis Product
|
12 pages
| null | null | null |
math.NT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In 1655, John Wallis whilst at the University of Oxford discovered the famous
and beautiful formula for pi, now known as Wallis' Product. Since then, several
analogous formulae have been discovered generalising the original. One more
modern proof of the Wallis Product and its relatives directly uses the Gamma
Function. This short paper will use similar techniques to understand certain
related classes of infinite products. Almost all results within this paper are
new findings made by myself; when I should be revising or completing assignment
work I find myself always going back to this.
|
[{'version': 'v1', 'created': 'Fri, 31 May 2019 23:56:15 GMT'}]
|
2019-06-04
|
[array(['Farrell', 'Joshua W. E.', ''], dtype=object)]
|
1,320 |
2305.12315
|
Shimon Kolkowitz
|
Xin Zheng, Jonathan Dolde, and Shimon Kolkowitz
|
Reducing the instability of an optical lattice clock using multiple
atomic ensembles
|
Main text: 8 pages, 4 figures. Appendix: 7 pages, 4 figures, 1 table.
49 references total
| null | null | null |
physics.atom-ph quant-ph
|
http://creativecommons.org/licenses/by/4.0/
|
The stability of an optical atomic clock is a critical figure of merit for
almost all clock applications. To this end, much optical atomic clock research
has focused on reducing clock instability by increasing the atom number,
lengthening the coherent interrogation times, and introducing entanglement to
push beyond the standard quantum limit. In this work, we experimentally
demonstrate an alternative approach to reducing clock instability using a phase
estimation approach based on individually controlled atomic ensembles in a
strontium (Sr) optical lattice clock. We first demonstrate joint Ramsey
interrogation of two spatially-resolved atom ensembles that are out of phase
with respect to each other, which we call "quadrature Ramsey spectroscopy,"
resulting in a factor of 1.36(5) reduction in absolute clock instability as
measured with interleaved self-comparisons. We then leverage the rich hyperfine
structure of ${}^{87}$Sr to realize independent coherent control over multiple
ensembles with only global laser addressing. Finally, we utilize this
independent control over 4 atom ensembles to implement a form of phase
estimation, achieving a factor of greater than 3 enhancement in coherent
interrogation time and a factor of 2.08(6) reduction in instability over an
otherwise identical single ensemble clock with the same local oscillator and
the same number of atoms. We expect that multi-ensemble protocols similar to
those demonstrated here will result in reduction in the instability of any
optical lattice clock with an interrogation time limited by the local
oscillator.
|
[{'version': 'v1', 'created': 'Sun, 21 May 2023 01:49:59 GMT'}]
|
2023-05-23
|
[array(['Zheng', 'Xin', ''], dtype=object)
array(['Dolde', 'Jonathan', ''], dtype=object)
array(['Kolkowitz', 'Shimon', ''], dtype=object)]
|
1,321 |
0911.2247
|
Tomasz Kwapinski dr
|
T. Kwapinski, S. Kohler and P. Hanggi
|
Dynamically broken symmetry in periodically gated quantum dots: Charge
accumulation and dc-current
|
10 pages, 7 figures, to appear in UJP (Ukr.J.Phys.)
|
Ukr. J. Phys. 55 (2010), 85
| null | null |
cond-mat.mes-hall
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Time-dependent electron transport through a quantum dot and double quantum
dot systems in the presence of polychromatic external periodic quantum dot
energy-level modulations is studied within the time evolution operator method
for a tight-binding Hamiltonian. Analytical relations for the dc-current
flowing through the system and the charge accumulated on a quantum dot are
obtained for the zero-temperature limit. It is shown that in the presence of
periodic perturbations the sideband peaks of the transmission are related to
combination frequencies of the applied modulations. For a double quantum dot
system under the influence of polychromatic perturbations the quantum pump
effect is studied in the absence of source-drain and static bias voltages. In
the presence of spatial symmetry the charge is pumped through the system due to
broken generalized parity symmetry.
|
[{'version': 'v1', 'created': 'Wed, 11 Nov 2009 21:24:40 GMT'}]
|
2010-03-12
|
[array(['Kwapinski', 'T.', ''], dtype=object)
array(['Kohler', 'S.', ''], dtype=object)
array(['Hanggi', 'P.', ''], dtype=object)]
|
1,322 |
1104.0244
|
Jonathan Ganc
|
Jonathan Ganc
|
Calculating the local-type fNL for slow-roll inflation with a non-vacuum
initial state
|
8 pages, 1 figure. v2: Version accepted for publication in PRD. Added
greatly expanded discussion of the phase angle \theta_k; this allows the
possibility of enhanced fNL, as mentioned in abstract. More explicit
comparisons with earlier work
|
Phys. Rev. D 84, 063514 (2011)
|
10.1103/PhysRevD.84.063514
|
TCC-007-11
|
astro-ph.CO hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Single-field slow-roll inflation with a non-vacuum initial state has an
enhanced bispectrum in the local limit. We numerically calculate the local-type
fNL signal in the CMB that would be measured for such models (including the
full transfer function and 2D projection). The nature of the result depends on
several parameters, including the occupation number N_k, the phase angle
\theta_k between the Bogoliubov parameters, and the slow-roll parameter
\epsilon. In the most conservative case, where one takes \theta_k \approx
\eta_0 k (justified by physical reasons discussed within) and \epsilon\lesssim
0.01, we find that 0 < fNL < 1.52 (\epsilon/0.01), which is likely too small to
be detected in the CMB. However, if one is willing to allow a constant value
for the phase angle \theta_k and N_k=O(1), fNL can be much larger and/or
negative (depending on the choice of \theta_k), e.g. fNL \approx 28
(\epsilon/0.01) or -6.4 (\epsilon/0.01); depending on \epsilon, these scenarios
could be detected by Planck or a future satellite. While we show that these
results are not actually a violation of the single-field consistency relation,
they do produce a value for fNL that is considerably larger than that usually
predicted from single-field inflation.
|
[{'version': 'v1', 'created': 'Fri, 1 Apr 2011 20:00:04 GMT'}
{'version': 'v2', 'created': 'Thu, 25 Aug 2011 15:46:17 GMT'}]
|
2011-09-19
|
[array(['Ganc', 'Jonathan', ''], dtype=object)]
|
1,323 |
astro-ph/0502112
|
Phil Uttley
|
P. Uttley (1), I. M. McHardy (2) and S. Vaughan (3) ((1) NASA-GSFC,
(2) University of Southampton, (3) University of Leicester)
|
Non-linear X-ray variability in X-ray binaries and active galaxies
|
20 pages, 9 figures, accepted for publication in MNRAS
|
Mon.Not.Roy.Astron.Soc. 359 (2005) 345-362
|
10.1111/j.1365-2966.2005.08886.x
| null |
astro-ph
| null |
We show that the rms-flux relation recently discovered in the X-ray light
curves of Active Galactic Nuclei (AGN) and X-ray binaries (XRBs) implies that
the light curves have a formally non-linear, exponential form, provided the
rms-flux relation applies to variations on all time-scales (as it appears to).
This phenomenological model implies that stationary data will have a lognormal
flux distribution. We confirm this result using an observation of Cyg X-1, and
further demonstrate that our model predicts the existence of the powerful
millisecond flares observed in Cyg X-1 in the low/hard state, and explains the
general shape and amplitude of the bicoherence spectrum in that source. Our
model predicts that the most variable light curves will show the most extreme
non-linearity. This result can naturally explain the apparent non-linear
variability observed in some highly variable Narrow Line Seyfert 1 (NLS1)
galaxies, as well as the low states observed on long time-scales in the NLS1
NGC 4051, as being nothing more than extreme manifestations of the same
variability process that is observed in XRBs and less variable AGN. That
variability process must be multiplicative (with variations coupled together on
all time-scales) and cannot be additive (such as shot-noise), or related to
self-organised criticality, or result from completely independent variations in
many separate emitting regions. Successful models for variability must
reproduce the observed rms-flux relation and non-linear behaviour, which are
more fundamental characteristics of the variability process than the power
spectrum or spectral-timing properties. Models where X-ray variability is
driven by accretion rate variations produced at different radii remain the most
promising.
|
[{'version': 'v1', 'created': 'Fri, 4 Feb 2005 22:21:00 GMT'}]
|
2009-11-10
|
[array(['Uttley', 'P.', ''], dtype=object)
array(['McHardy', 'I. M.', ''], dtype=object)
array(['Vaughan', 'S.', ''], dtype=object)]
|
1,324 |
2111.05411
|
Johannes Branahl
|
Johannes Branahl and Alexander Hock
|
Genus one free energy contribution to the quartic Kontsevich model
|
33 pages, 4 figures. Final step of the proof of Th. 4.6: Readers with
expertise in TR are encouraged to interpret the compensation term
| null | null | null |
math-ph math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We prove a formula for the genus one free energy $\mathcal{F}^{(1)}$ of the
quartic Kontsevich model for arbitrary ramification by working out a boundary
creation operator for blobbed topological recursion. We thus investigate the
differences in $\mathcal{F}^{(1)}$ compared with its generic representation for
ordinary topological recursion. In particular, we clarify the role of the
Bergman $\tau$-function in blobbed topological recursion. As a by-product, we
show that considering the holomorphic additions contributing to $\omega_{g,1}$
or not gives a distinction between the enumeration of bipartite and
non-bipartite quadrangulations of a genus-$g$ surface.
|
[{'version': 'v1', 'created': 'Tue, 9 Nov 2021 20:41:38 GMT'}]
|
2021-11-11
|
[array(['Branahl', 'Johannes', ''], dtype=object)
array(['Hock', 'Alexander', ''], dtype=object)]
|
1,325 |
2205.15875
|
Iris Huijben
|
Iris A.M. Huijben, Arthur A. Nijdam, Sebastiaan Overeem, Merel M. van
Gilst, Ruud J.G. van Sloun
|
SOM-CPC: Unsupervised Contrastive Learning with Self-Organizing Maps for
Structured Representations of High-Rate Time Series
| null |
International Conference on Machine Learning 2023
| null | null |
cs.LG cs.NE
|
http://creativecommons.org/licenses/by-sa/4.0/
|
Continuous monitoring with an ever-increasing number of sensors has become
ubiquitous across many application domains. However, acquired time series are
typically high-dimensional and difficult to interpret. Expressive deep learning
(DL) models have gained popularity for dimensionality reduction, but the
resulting latent space often remains difficult to interpret. In this work we
propose SOM-CPC, a model that visualizes data in an organized 2D manifold,
while preserving higher-dimensional information. We address a largely
unexplored and challenging set of scenarios comprising high-rate time series,
and show on both synthetic and real-life data (physiological data and audio
recordings) that SOM-CPC outperforms strong baselines like DL-based feature
extraction, followed by conventional dimensionality reduction techniques, and
models that jointly optimize a DL model and a Self-Organizing Map (SOM).
SOM-CPC has great potential to acquire a better understanding of latent
patterns in high-rate data streams.
|
[{'version': 'v1', 'created': 'Tue, 31 May 2022 15:21:21 GMT'}
{'version': 'v2', 'created': 'Thu, 25 May 2023 15:06:08 GMT'}]
|
2023-05-26
|
[array(['Huijben', 'Iris A. M.', ''], dtype=object)
array(['Nijdam', 'Arthur A.', ''], dtype=object)
array(['Overeem', 'Sebastiaan', ''], dtype=object)
array(['van Gilst', 'Merel M.', ''], dtype=object)
array(['van Sloun', 'Ruud J. G.', ''], dtype=object)]
|
1,326 |
1310.4877
|
Shinya Gongyo
|
Shinya Gongyo and Hideaki Iida
|
Gribov-Zwanziger action in SU(2) Maximally Abelian Gauge with U(1)$_3$
Landau Gauge
| null |
Phys. Rev. D 89, 025022 (2014) [8 pages]
|
10.1103/PhysRevD.89.025022
| null |
hep-th hep-lat hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We construct the local Gribov-Zwanziger action for SU(2) Euclidean Yang-Mills
theories in the maximally Abelian (MA) gauge with U(1)$_3$ Landau gauge fixing
based on the Zwanziger's work in the Landau gauge. By the restriction of the
functional integral region to the Gribov region in the MA gauge, we give the
nonlocal action. We localize the action with new fields and obtain the action
with the shift of the new scalar fields, which has the terms, corresponding to
the localized action of the horizon function in the MA gauge. The diagonal
gluon propagator in the MA gauge at tree level behaves like the propagator from
Gribov-Zwanziger action in the Landau gauge and shows the violation of
Kallen-Lehmann representation.
|
[{'version': 'v1', 'created': 'Fri, 18 Oct 2013 00:04:38 GMT'}
{'version': 'v2', 'created': 'Thu, 7 Nov 2013 20:10:58 GMT'}]
|
2014-02-10
|
[array(['Gongyo', 'Shinya', ''], dtype=object)
array(['Iida', 'Hideaki', ''], dtype=object)]
|
1,327 |
0708.1346
|
Matthew Roberts
|
Gary T. Horowitz and Matthew M. Roberts
|
Counting the Microstates of a Kerr Black Hole
|
10 pages, 2 figures
|
Phys.Rev.Lett.99:221601,2007
|
10.1103/PhysRevLett.99.221601
| null |
hep-th gr-qc
| null |
We show that an extremal Kerr black hole, appropriately lifted to M-theory,
can be transformed to a Kaluza-Klein black hole in M-theory, or a D0-D6 charged
black hole in string theory. Since all the microstates of the latter have
recently been identified, one can exactly reproduce the entropy of an extremal
Kerr black hole. We also show that the topology of the event horizon is not
well defined in M-theory.
|
[{'version': 'v1', 'created': 'Thu, 9 Aug 2007 22:16:47 GMT'}]
|
2008-11-26
|
[array(['Horowitz', 'Gary T.', ''], dtype=object)
array(['Roberts', 'Matthew M.', ''], dtype=object)]
|
1,328 |
cond-mat/0408641
|
Er'el Granot
|
Er'el Granot
|
Point scatterers in low number of dimensions
|
4 pages, RevTex
| null | null | null |
cond-mat.mes-hall
| null |
It is well known that in 1D the cross section of a point scatterer increases
along with the scatterer's strength (potential). In this paper we show that
this is an exceptional case, and in all the other cases, where a point defect
has a physical meaning, i.e., 0<d<1 and 1<d<=2 (d is the dimensions number),
the cross section does not increase monotonically with the scatterer's
strength. In fact, the cross section exhibits a resonance dependence on the
scatterer's strength, and in the singular 2D case it gets its maximum value for
an infinitely weak strength. We use this fact to show that two totally
different generalized functions can describe exactly the same physical entity
(the same scatterer).
|
[{'version': 'v1', 'created': 'Sun, 29 Aug 2004 09:41:22 GMT'}]
|
2007-05-23
|
[array(['Granot', "Er'el", ''], dtype=object)]
|
1,329 |
1410.5170
|
Abhik Ghosh
|
Abhik Ghosh and Ayanendranath Basu
|
Robust and Efficient Parameter Estimation based on Censored Data with
Stochastic Covariates
|
Pre-print, 29 pages
|
Statistics A Journal of Theoretical and Applied Statistics (2017)
Volume 51, Issue 4
|
10.1080/02331888.2017.1318139
| null |
math.ST stat.AP stat.ME stat.TH
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Analysis of random censored life-time data along with some related stochastic
covariables is of great importance in many applied sciences like medical
research, population studies and planning etc. The parametric estimation
technique commonly used under this set-up is based on the efficient but
non-robust likelihood approach. In this paper, we propose a robust parametric
estimator for the censored data with stochastic covariates based on the minimum
density power divergence approach. The resulting estimator also has competitive
efficiency with respect to the maximum likelihood estimator under pure data.
The strong robustness property of the proposed estimator with respect to the
presence of outliers is examined and illustrated through an appropriate
simulation study in the context of censored regression with stochastic
covariates. Further, the theoretical asymptotic properties of the proposed
estimator are also derived in terms of a general class of M-estimators based on
the estimating equation.
|
[{'version': 'v1', 'created': 'Mon, 20 Oct 2014 07:30:42 GMT'}
{'version': 'v2', 'created': 'Wed, 24 Dec 2014 09:42:09 GMT'}
{'version': 'v3', 'created': 'Fri, 1 Jul 2016 07:31:06 GMT'}]
|
2019-05-09
|
[array(['Ghosh', 'Abhik', ''], dtype=object)
array(['Basu', 'Ayanendranath', ''], dtype=object)]
|
1,330 |
1703.02004
|
Zhenfei Liu
|
Zhenfei Liu, David A. Egger, Sivan Refaely-Abramson, Leeor Kronik, and
Jeffrey B. Neaton
|
Energy Level Alignment at Molecule-Metal Interfaces from an
Optimally-Tuned Range-Separated Hybrid Functional
|
15 pages, 8 figures
|
J. Chem. Phys. 146, 092326 (2017)
|
10.1063/1.4975321
| null |
cond-mat.mes-hall cond-mat.mtrl-sci
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The alignment of the frontier orbital energies of an adsorbed molecule with
the substrate Fermi level at metal-organic interfaces is a fundamental
observable of significant practical importance in nanoscience and beyond.
Typical density functional theory calculations, especially those using local
and semi-local functionals, often underestimate level alignment leading to
inaccurate electronic structure and charge transport properties. In this work,
we develop a new fully self-consistent predictive scheme to accurately compute
level alignment at certain classes of complex heterogeneous molecule-metal
interfaces based on optimally-tuned range-separated hybrid functionals.
Starting from a highly accurate description of the gas-phase electronic
structure, our method by construction captures important nonlocal surface
polarization effects via tuning of the long-range screened exchange in a
range-separated hybrid in a non-empirical and system-specific manner. We
implement this functional in a plane-wave code and apply it to several
physisorbed and chemisorbed molecule-metal interface systems. Our results are
in quantitative agreement with experiments, both the level alignment and work
function changes. Our approach constitutes a new practical scheme for accurate
and efficient calculations of the electronic structure of molecule-metal
interfaces.
|
[{'version': 'v1', 'created': 'Mon, 6 Mar 2017 18:00:04 GMT'}]
|
2017-03-07
|
[array(['Liu', 'Zhenfei', ''], dtype=object)
array(['Egger', 'David A.', ''], dtype=object)
array(['Refaely-Abramson', 'Sivan', ''], dtype=object)
array(['Kronik', 'Leeor', ''], dtype=object)
array(['Neaton', 'Jeffrey B.', ''], dtype=object)]
|
1,331 |
1909.08953
|
Asmaa Shamesaldeen
|
Julio Andrade, Asmaa Shamesaldeen
|
Hybrid Euler-Hadamard Product for Dirichlet $L$-functions with Prime
conductors over Function Fields
|
20 pages, comments are welcome
| null | null | null |
math.NT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper we extend the hybrid Euler-Hadamard product model for quadratic
Dirichlet $L$-functions associated to irreducible polynomials over function
fields. We also establish an asymptotic formula for the first twisted moment in
this family of L-functions and then we provide further evidence for the
conjectural asymptotic formulas for its moments.
|
[{'version': 'v1', 'created': 'Thu, 19 Sep 2019 13:05:21 GMT'}]
|
2019-09-20
|
[array(['Andrade', 'Julio', ''], dtype=object)
array(['Shamesaldeen', 'Asmaa', ''], dtype=object)]
|
1,332 |
1709.07896
|
Ben Farr
|
Ben Farr, Daniel E. Holz, Will M. Farr
|
Using spin to understand the formation of LIGO's black holes
| null | null |
10.3847/2041-8213/aaaa64
| null |
astro-ph.HE gr-qc
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
With the detection of four candidate binary black hole (BBH) mergers by the
Advanced LIGO detectors thus far, it is becoming possible to constrain the
properties of the BBH merger population in order to better understand the
formation of these systems. Black hole (BH) spin orientations are one of the
cleanest discriminators of formation history, with BHs in dynamically formed
binaries in dense stellar environments expected to have spins distributed
isotropically, in contrast to isolated populations where stellar evolution is
expected to induce BH spins preferentially aligned with the orbital angular
momentum. In this work we propose a simple, model-agnostic approach to
characterizing the spin properties of LIGO's BBH population. Using measurements
of the effective spin of the binaries, which is LIGO's best constrained spin
parameter, we introduce a simple parameter to quantify the fraction of the
population that is isotropically distributed, regardless of the spin magnitude
distribution of the population. Once the orientation characteristics of the
population have been determined, we show how measurements of effective spin can
be used to directly constrain the underlying BH spin magnitude distribution.
Although we find that the majority of the current effective spin measurements
are too small to be informative, with LIGO's four BBH candidates we find a
slight preference for an underlying population with aligned spins over one with
isotropic spins (with an odds ratio of 1.1). We argue that it will be possible
to distinguish symmetric and anti-symmetric populations at high confidence with
tens of additional detections, although mixed populations may take
significantly more detections to disentangle. We also derive preliminary spin
magnitude distributions for LIGO's black holes, under the assumption of aligned
or isotropic populations.
|
[{'version': 'v1', 'created': 'Fri, 22 Sep 2017 18:13:39 GMT'}]
|
2018-02-21
|
[array(['Farr', 'Ben', ''], dtype=object)
array(['Holz', 'Daniel E.', ''], dtype=object)
array(['Farr', 'Will M.', ''], dtype=object)]
|
1,333 |
2012.05820
|
Ben Moews
|
Ben Moews, Romeel Dav\'e, Sourav Mitra, Sultan Hassan, Weiguang Cui
|
Hybrid analytic and machine-learned baryonic property insertion into
galactic dark matter haloes
|
15 pages, 8 figures, accepted for publication in MNRAS
| null |
10.1093/mnras/stab1120
| null |
astro-ph.GA astro-ph.IM stat.AP stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
While cosmological dark matter-only simulations relying solely on
gravitational effects are comparably fast to compute, baryonic properties in
simulated galaxies require complex hydrodynamic simulations that are
computationally costly to run. We explore the merging of an extended version of
the equilibrium model, an analytic formalism describing the evolution of the
stellar, gas, and metal content of galaxies, into a machine learning framework.
In doing so, we are able to recover more properties than the analytic formalism
alone can provide, creating a high-speed hydrodynamic simulation emulator that
populates galactic dark matter haloes in N-body simulations with baryonic
properties. While there exists a trade-off between the reached accuracy and the
speed advantage this approach offers, our results outperform an approach using
only machine learning for a subset of baryonic properties. We demonstrate that
this novel hybrid system enables the fast completion of dark matter-only
information by mimicking the properties of a full hydrodynamic suite to a
reasonable degree, and discuss the advantages and disadvantages of hybrid
versus machine learning-only frameworks. In doing so, we offer an acceleration
of commonly deployed simulations in cosmology.
|
[{'version': 'v1', 'created': 'Thu, 10 Dec 2020 16:50:33 GMT'}
{'version': 'v2', 'created': 'Tue, 15 Nov 2022 05:45:23 GMT'}]
|
2022-11-16
|
[array(['Moews', 'Ben', ''], dtype=object)
array(['Davé', 'Romeel', ''], dtype=object)
array(['Mitra', 'Sourav', ''], dtype=object)
array(['Hassan', 'Sultan', ''], dtype=object)
array(['Cui', 'Weiguang', ''], dtype=object)]
|
1,334 |
1208.1731
|
Alberto Camjayi
|
Alberto Camjayi and Liliana Arrachea
|
Conductance of a quantum dot in the Kondo regime connected to dirty
wires
|
7 pages, 4 figures
|
Phys. Rev. B 86, 235143 (2012)
|
10.1103/PhysRevB.86.235143
| null |
cond-mat.str-el
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study the transport behavior induced by a small bias voltage through a
quantum dot connected to one-channel disordered wires by means of a quantum
Monte Carlo method. We model the quantum dot by the Hubbard-Anderson impurity
and the wires by the one-dimensional Anderson model with diagonal disorder
within a length. We present a complete description of the probability
distribution function of the conductance within the Kondo regime.
|
[{'version': 'v1', 'created': 'Wed, 8 Aug 2012 18:37:44 GMT'}
{'version': 'v2', 'created': 'Thu, 27 Dec 2012 14:06:43 GMT'}]
|
2013-01-01
|
[array(['Camjayi', 'Alberto', ''], dtype=object)
array(['Arrachea', 'Liliana', ''], dtype=object)]
|
1,335 |
cs/9812004
|
Mark D. Roberts
|
Mark D. Roberts
|
Name Strategy: Its Existence and Implications
|
32 pages, 2 ascii diagrams
|
Int.J.Computational Cognition Volume 3 Pages 1-14 (2005).
| null | null |
cs.CL cs.AI math.HO
| null |
It is argued that colour name strategy, object name strategy, and chunking
strategy in memory are all aspects of the same general phenomena, called
stereotyping. It is pointed out that the Berlin-Kay universal partial ordering
of colours and the frequency of traffic accidents classified by colour are
surprisingly similar. Some consequences of the existence of a name strategy for
the philosophy of language and mathematics are discussed. It is argued that
real valued quantities occur {\it ab initio}. The implication of real valued
truth quantities is that the {\bf Continuum Hypothesis} of pure mathematics is
side-stepped. The existence of name strategy shows that thought/sememes and
talk/phonemes can be separate, and this vindicates the assumption of thought
occurring before talk used in psycholinguistic speech production models.
|
[{'version': 'v1', 'created': 'Fri, 4 Dec 1998 12:28:19 GMT'}]
|
2007-05-23
|
[array(['Roberts', 'Mark D.', ''], dtype=object)]
|
1,336 |
1507.06867
|
Akhil Mathew
|
Akhil Mathew, Niko Naumann, Justin Noel
|
Derived induction and restriction theory
|
63 pages. Many edits and some simplifications. Final version, to
appear in Geometry and Topology
|
Geom. Topol. 23 (2019) 541-636
|
10.2140/gt.2019.23.541
| null |
math.AT math.CT math.RT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Let $G$ be a finite group. To any family $\mathscr{F}$ of subgroups of $G$,
we associate a thick $\otimes$-ideal $\mathscr{F}^{\mathrm{Nil}}$ of the
category of $G$-spectra with the property that every $G$-spectrum in
$\mathscr{F}^{\mathrm{Nil}}$ (which we call $\mathscr{F}$-nilpotent) can be
reconstructed from its underlying $H$-spectra as $H$ varies over $\mathscr{F}$.
A similar result holds for calculating $G$-equivariant homotopy classes of maps
into such spectra via an appropriate homotopy limit spectral sequence. In
general, the condition $E\in \mathscr{F}^{\mathrm{Nil}}$ implies strong
collapse results for this spectral sequence as well as its dual homotopy
colimit spectral sequence. As applications, we obtain Artin and Brauer type
induction theorems for $G$-equivariant $E$-homology and cohomology, and
generalizations of Quillen's $\mathcal{F}_p$-isomorphism theorem when $E$ is a
homotopy commutative $G$-ring spectrum.
We show that the subcategory $\mathscr{F}^{\mathrm{Nil}}$ contains many
$G$-spectra of interest for relatively small families $\mathscr{F}$. These
include $G$-equivariant real and complex $K$-theory as well as the
Borel-equivariant cohomology theories associated to complex oriented ring
spectra, any $L_n$-local spectrum, the classical bordism theories, connective
real $K$-theory, and any of the standard variants of topological modular forms.
In each of these cases we identify the minimal family such that these results
hold.
|
[{'version': 'v1', 'created': 'Fri, 24 Jul 2015 14:59:43 GMT'}
{'version': 'v2', 'created': 'Fri, 6 Jan 2017 22:48:11 GMT'}
{'version': 'v3', 'created': 'Thu, 30 Aug 2018 19:30:48 GMT'}]
|
2019-04-17
|
[array(['Mathew', 'Akhil', ''], dtype=object)
array(['Naumann', 'Niko', ''], dtype=object)
array(['Noel', 'Justin', ''], dtype=object)]
|
1,337 |
1704.02712
|
Zheng Xu
|
Zheng Xu, Mario A. T. Figueiredo, Xiaoming Yuan, Christoph Studer, and
Tom Goldstein
|
Adaptive Relaxed ADMM: Convergence Theory and Practical Implementation
|
CVPR 2017
| null | null | null |
cs.CV cs.AI cs.LG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Many modern computer vision and machine learning applications rely on solving
difficult optimization problems that involve non-differentiable objective
functions and constraints. The alternating direction method of multipliers
(ADMM) is a widely used approach to solve such problems. Relaxed ADMM is a
generalization of ADMM that often achieves better performance, but its
efficiency depends strongly on algorithm parameters that must be chosen by an
expert user. We propose an adaptive method that automatically tunes the key
algorithm parameters to achieve optimal performance without user oversight.
Inspired by recent work on adaptivity, the proposed adaptive relaxed ADMM
(ARADMM) is derived by assuming a Barzilai-Borwein style linear gradient. A
detailed convergence analysis of ARADMM is provided, and numerical results on
several applications demonstrate fast practical convergence.
|
[{'version': 'v1', 'created': 'Mon, 10 Apr 2017 05:07:38 GMT'}]
|
2017-04-11
|
[array(['Xu', 'Zheng', ''], dtype=object)
array(['Figueiredo', 'Mario A. T.', ''], dtype=object)
array(['Yuan', 'Xiaoming', ''], dtype=object)
array(['Studer', 'Christoph', ''], dtype=object)
array(['Goldstein', 'Tom', ''], dtype=object)]
|
1,338 |
nucl-th/0703097
|
Christian Forss\'en
|
C. Forssen, F. S. Dietrich, J. Escher, R. D. Hoffman, and K. Kelley
|
Determining neutron-capture cross sections via the surrogate reaction
technique
|
17 pages, 9 figures. Accepted for publication in Phys. Rev. C
|
Phys.Rev.C75:055807,2007
|
10.1103/PhysRevC.75.055807
|
UCRL-JRNL-228066
|
nucl-th
| null |
Indirect methods play an important role in the determination of nuclear
reaction cross sections that are hard to measure directly. In this paper we
investigate the feasibility of using the so-called surrogate method to extract
neutron-capture cross sections for low energy compound-nuclear reactions in
spherical and near-spherical nuclei. We present the surrogate method and
develop a statistical nuclear-reaction simulation to explore different
approaches to utilize surrogate reaction data. We assess the success of each
approach by comparing the extracted cross sections with a predetermined
benchmark. In particular, we employ regional systematics of nuclear properties
in the 34 <= Z <= 46 region to calculate (n,gamma) cross sections for a series
of Zr isotopes, and to simulate a surrogate experiment and the extraction of
the desired cross section. We identify one particular approach that may provide
very useful estimates of the cross section, and we discuss some of the
limitations of the method. General recommendations for future (surrogate)
experiments are also given.
|
[{'version': 'v1', 'created': 'Thu, 29 Mar 2007 15:22:53 GMT'}]
|
2008-11-26
|
[array(['Forssen', 'C.', ''], dtype=object)
array(['Dietrich', 'F. S.', ''], dtype=object)
array(['Escher', 'J.', ''], dtype=object)
array(['Hoffman', 'R. D.', ''], dtype=object)
array(['Kelley', 'K.', ''], dtype=object)]
|
1,339 |
1610.01917
|
Yi Sun
|
Eric M. Rains, Yi Sun, and Alexander Varchenko
|
Affine Macdonald conjectures and special values of Felder-Varchenko
functions
|
26 pages. v3: minor edits for published version
| null |
10.1007/s00029-017-0328-4
| null |
math.RT math-ph math.MP math.QA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We refine the statement of the denominator and evaluation conjectures for
affine Macdonald polynomials proposed by Etingof-Kirillov Jr. and prove the
first non-trivial cases of these conjectures. Our results provide a
q-deformation of the computation of genus 1 conformal blocks via elliptic
Selberg integrals by Felder-Stevens-Varchenko. They allow us to give precise
formulations for the affine Macdonald conjectures in the general case which are
consistent with computer computations.
Our method applies recent work of the second named author to relate these
conjectures in the case of $U_q(\widehat{\mathfrak{sl}}_2)$ to evaluations of
certain theta hypergeometric integrals defined by Felder-Varchenko. We then
evaluate the resulting integrals, which may be of independent interest, by
well-chosen applications of the elliptic beta integral introduced by
Spiridonov.
|
[{'version': 'v1', 'created': 'Thu, 6 Oct 2016 15:57:45 GMT'}
{'version': 'v2', 'created': 'Sat, 12 Nov 2016 20:03:49 GMT'}
{'version': 'v3', 'created': 'Thu, 27 Apr 2017 19:27:43 GMT'}]
|
2017-05-01
|
[array(['Rains', 'Eric M.', ''], dtype=object)
array(['Sun', 'Yi', ''], dtype=object)
array(['Varchenko', 'Alexander', ''], dtype=object)]
|
1,340 |
physics/0008161
|
Sung-il Kwon
|
Sung-il Kwon (1), Yi-Ming Wang (1), Amy Regan (1), Tony Rohlev (1),
Mark Prokop (2), Dave Thomson (2) ((1) LANL, (2)Honeywell FM&T)
|
SNS Superconducting Cavity Modeling -Iterative Learning Control
|
For Linac2000, Paper ID TUC13, 3 pages, 3 figures, The summary of the
technical report, LANSCE-5-TN-00-014, Los Alamos Nation Lab., July, 2000
|
eConf C000821 (2000) TUc13
| null | null |
physics.acc-ph
| null |
The SNS SRF system is operated with a pulsed beam. For the SRF system to
track the repetitive reference trajectory, a feedback and a feedforward
controllers has been proposed. The feedback controller is to guarantee the
closed loop system stability and the feedforward controller is to improve the
tracking performance for the repetitive reference trajectory and to suppress
the repetitive disturbance. As the iteration number increases, the error
decreases.
|
[{'version': 'v1', 'created': 'Fri, 18 Aug 2000 20:55:04 GMT'}]
|
2007-05-23
|
[array(['Kwon', 'Sung-il', '', 'LANL'], dtype=object)
array(['Wang', 'Yi-Ming', '', 'LANL'], dtype=object)
array(['Regan', 'Amy', '', 'LANL'], dtype=object)
array(['Rohlev', 'Tony', '', 'LANL'], dtype=object)
array(['Prokop', 'Mark', '', 'Honeywell FM&T'], dtype=object)
array(['Thomson', 'Dave', '', 'Honeywell FM&T'], dtype=object)]
|
1,341 |
1705.07113
|
Kaibo Hu
|
Kaibo Hu, Ragnar Winther
|
Well-conditioned frames for high order finite element methods
|
numerical experiments added, accepted by Journal of Computational
Mathematics
| null | null | null |
math.NA cs.NA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The purpose of this paper is to discuss representations of high order $C^0$
finite element spaces on simplicial meshes in any dimension. When computing
with high order piecewise polynomials the conditioning of the basis is likely
to be important. The main result of this paper is a construction of
representations by frames such that the associated $L^2$ condition number is
bounded independently of the polynomial degree. To our knowledge, such a
representation has not been presented earlier. The main tools we will use for
the construction is the bubble transform, introduced previously in [Falk and
Winther, Found Comput Math (2016) 16: 297], and properties of Jacobi
polynomials on simplexes in higher dimensions. We also include a brief
discussion of preconditioned iterative methods for the finite element systems
in the setting of representations by frames.
|
[{'version': 'v1', 'created': 'Fri, 19 May 2017 17:56:33 GMT'}
{'version': 'v2', 'created': 'Mon, 28 Aug 2017 12:49:16 GMT'}
{'version': 'v3', 'created': 'Wed, 30 May 2018 20:42:30 GMT'}
{'version': 'v4', 'created': 'Wed, 15 Jan 2020 18:50:41 GMT'}]
|
2020-01-16
|
[array(['Hu', 'Kaibo', ''], dtype=object)
array(['Winther', 'Ragnar', ''], dtype=object)]
|
1,342 |
1312.0091
|
Julio Marny Hoff da Silva
|
A. de Souza Dutra, G. P. de Brito, and J. M. Hoff da Silva
|
Asymmetrical bloch branes and the hierarchy problem
|
8 pages, 7 figures
| null |
10.1209/0295-5075/108/11001
| null |
hep-th gr-qc
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We investigate a two scalar fields split braneworld model which leads to a
possible approach to the hierarchy problem within the thick brane scenario. The
model exhibits a resulting asymmetric warp factor suitable for this purpose.
The solution is obtained by means of the orbit equation approach for a specific
value of one of the parameters. Besides, we analyze the model qualitative
behaviour for arbitrary parameters by inspecting the underlying dynamical
system defined by the equations which give rise to the braneworld model. We
finalize commenting on the metric fluctuation and stability issues.
|
[{'version': 'v1', 'created': 'Sat, 30 Nov 2013 11:24:41 GMT'}
{'version': 'v2', 'created': 'Thu, 10 Apr 2014 21:35:46 GMT'}]
|
2015-06-18
|
[array(['Dutra', 'A. de Souza', ''], dtype=object)
array(['de Brito', 'G. P.', ''], dtype=object)
array(['da Silva', 'J. M. Hoff', ''], dtype=object)]
|
1,343 |
hep-lat/0308037
|
Rajamani Narayanan
|
F.Berruto, R.Narayanan, H.Neuberger
|
Analysis of finite temperature phase transition using level spacing
|
3 pages, 6 figures, contribution to Lattice 2003 (Non-zero V)
| null |
10.1016/S0920-5632(03)02646-X
| null |
hep-lat
| null |
Let B be the largest spacing between adjacent eigenvalues of the Polyakov
loop. We propose to employ the distribution of B as an order parameter for the
finite temperature phase transition in SU(N) lattice gauge theories. Using
smeared links to reduce ultraviolet fluctuations, we carry out a test for the
gauge group SU(3).
|
[{'version': 'v1', 'created': 'Fri, 29 Aug 2003 14:04:04 GMT'}]
|
2009-11-10
|
[array(['Berruto', 'F.', ''], dtype=object)
array(['Narayanan', 'R.', ''], dtype=object)
array(['Neuberger', 'H.', ''], dtype=object)]
|
1,344 |
1110.4913
|
Barnaby Rowe Dr
|
Catherine Heymans, Barnaby Rowe, Henk Hoekstra, Lance Miller, Thomas
Erben, Thomas Kitching, Ludovic Van Waerbeke
|
The impact of high spatial frequency atmospheric distortions on weak
lensing measurements
|
9 pages, 7 figures, version accepted by MNRAS
| null |
10.1111/j.1365-2966.2011.20312.x
| null |
astro-ph.CO astro-ph.IM
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
High precision cosmology with weak gravitational lensing requires a precise
measure of the Point Spread Function across the imaging data where the accuracy
to which high spatial frequency variation can be modelled is limited by the
stellar number density across the field. We analyse dense stellar fields imaged
at the Canada-France-Hawaii Telescope to quantify the degree of high spatial
frequency variation in ground-based imaging Point Spread Functions and compare
our results to models of atmospheric turbulence. The data shows an anisotropic
turbulence pattern with an orientation independent of the wind direction and
wind speed. We find the amplitude of the high spatial frequencies to decrease
with increasing exposure time as $t^{-1/2}$, and find a negligibly small
atmospheric contribution to the Point Spread Function ellipticity variation for
exposure times $t>180$ seconds. For future surveys analysing shorter exposure
data, this anisotropic turbulence will need to be taken into account as the
amplitude of the correlated atmospheric distortions becomes comparable to a
cosmological lensing signal on scales less than $\sim 10$ arcminutes. This
effect could be mitigated, however, by correlating galaxy shear measured on
exposures imaged with a time separation greater than 50 seconds, for which we
find the spatial turbulence patterns to be uncorrelated.
|
[{'version': 'v1', 'created': 'Fri, 21 Oct 2011 21:46:15 GMT'}
{'version': 'v2', 'created': 'Fri, 2 Dec 2011 00:26:26 GMT'}]
|
2015-05-30
|
[array(['Heymans', 'Catherine', ''], dtype=object)
array(['Rowe', 'Barnaby', ''], dtype=object)
array(['Hoekstra', 'Henk', ''], dtype=object)
array(['Miller', 'Lance', ''], dtype=object)
array(['Erben', 'Thomas', ''], dtype=object)
array(['Kitching', 'Thomas', ''], dtype=object)
array(['Van Waerbeke', 'Ludovic', ''], dtype=object)]
|
1,345 |
cond-mat/0209473
|
Micha{\l} Matlak
|
B.Grabiec, M.Matlak
|
Thermodynamical Cross-Relations for Superconductors at the Critical
Point
|
phys.stat.sol. (b) 231, No. 2, 299-312 (2002)
| null |
10.1002/1521-3951(200206)231:2<299::AID-PSSB299>3.0.CO;2-S
| null |
cond-mat.supr-con
| null |
We investigate superconducting systems with the use of the phenomenological
Landau's theory of second order phase transitions, including into the
considerations the critical behaviour of the chemical potential. We derive in
this way a variety of new thermodynamical relations at the critical point.
Twelve basic relations connect critical jumps of different thermodynamical
quantites (specific heat, chemical potential derivatives with respect to
temperature, pressure (volume) and number of particles, volume (pressure)
derivatives with respect to temperature and pressure (volume)) with the
critical temperature or its derivatives with respect to the number of particles
or pressure (volume). These relations allow to find plenty of cross-relations
between different quantities at the critical point. The derived formulae can
practically be used in many cases to find such thermodynamical quantities at
the critical point which are extremely difficult to measure under the
assumption that the other ones are already known. We additionally perform a
test of the two derived relations by using two-band microscopic model,
describing superconducting systems. We calculate the specific heat, order
parameter and chemical potential as functions of temperature to show that the
tested relations are very well fulfilled.
|
[{'version': 'v1', 'created': 'Thu, 19 Sep 2002 15:12:54 GMT'}]
|
2015-06-24
|
[array(['Grabiec', 'B.', ''], dtype=object)
array(['Matlak', 'M.', ''], dtype=object)]
|
1,346 |
cond-mat/9912398
|
Zieve
|
H. A. Radovan, E. Behne, R. J. Zieve, J. S. Kim, G. R. Stewart, and
W.-K. Kwok
|
Reduction of critical temperatures in pure and thoriated UBe13 by
columnar defects
|
3 pages, 1 figure. To be presented at M2S-HTSC-VI
| null |
10.1016/S0921-4534(00)01420-9
| null |
cond-mat.supr-con
| null |
We investigate the influence of columnar defects on the superconducting
transition temperatures of pure and thoriated UBe13. The defects cause all the
transitions to widen and to drop slightly in temperature. Quantitatively, the
single UBe13 transition resembles the lower transition in a sample with 3%
thorium more closely than the upper thoriated transition.
|
[{'version': 'v1', 'created': 'Wed, 22 Dec 1999 06:43:17 GMT'}]
|
2009-10-31
|
[array(['Radovan', 'H. A.', ''], dtype=object)
array(['Behne', 'E.', ''], dtype=object)
array(['Zieve', 'R. J.', ''], dtype=object)
array(['Kim', 'J. S.', ''], dtype=object)
array(['Stewart', 'G. R.', ''], dtype=object)
array(['Kwok', 'W. -K.', ''], dtype=object)]
|
1,347 |
2209.03587
|
Shun Oshima
|
Shun Oshima
|
Stability of curvature-dimension condition for negative dimensions under
concentration topology
|
33 pages
| null | null | null |
math.MG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper, we prove the stability of metric measure spaces satisfying the
curvature-dimension condition for negative dimensions under a concentration
topology. This result is an analogue of the result by Funano-Shioya with
respect to the dimension parameter.
|
[{'version': 'v1', 'created': 'Thu, 8 Sep 2022 06:21:16 GMT'}]
|
2022-09-09
|
[array(['Oshima', 'Shun', ''], dtype=object)]
|
1,348 |
1803.07169
|
Athanasios Sourmelidis
|
Athanasios Sourmelidis
|
On the meromorphic continuation of Beatty Zeta-Functions and Sturmian
Dirichlet series
|
17 pages
|
Journal of Number Theory 194 (2019) 303-318
|
10.1016/j.jnt.2018.07.009
| null |
math.NT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
For a positive irrational number $\alpha,$ we study the ordinary Dirichlet
series $\zeta_\alpha(s) = \sum\limits_{n\geq1} \lfloor\alpha n\rfloor^{-s}$ and
$S_\alpha(s) = \sum\limits_{n\geq1} (\left\lceil\alpha n\right\rceil -
\left\lceil \alpha (n-1)\right\rceil){n^{-s}}.$ We prove relations between them
and $J_{\boldsymbol{\alpha}}(s)=\sum\limits_{n\geq1}\left(\lbrace\alpha
n\rbrace-\frac{1}{2}\right)n^{-s}.$ Motivated by the previous work of Hardy and
Littlewood, Hecke and others regarding $J_{\boldsymbol{\alpha}},$ we show that
$\zeta_\alpha$ and $S_\alpha$ can be continued analytically beyond the
imaginary axis except for a simple pole at $s=1.$ Based on the latter results,
we also prove that the series
$\zeta_{\alpha}(s;\beta)=\sum\limits_{n\geq0}\left(\lfloor\alpha
n\rfloor+\beta\right)^{-s}$ can be continued analytically beyond the imaginary
axis except for a simple pole at $s=1.$
|
[{'version': 'v1', 'created': 'Mon, 19 Mar 2018 21:18:07 GMT'}
{'version': 'v2', 'created': 'Fri, 11 May 2018 07:43:46 GMT'}]
|
2022-07-07
|
[array(['Sourmelidis', 'Athanasios', ''], dtype=object)]
|
1,349 |
2203.05575
|
Tom Rudelius
|
Tom Rudelius
|
Constraints on Early Dark Energy from the Axion Weak Gravity Conjecture
|
7 pages, 2 figures
| null |
10.1088/1475-7516/2023/01/014
| null |
hep-th astro-ph.CO hep-ph
|
http://creativecommons.org/licenses/by/4.0/
|
A popular proposal for resolving the Hubble tension involves an early phase
of dark energy, driven by an axion field with a periodic potential. In this
paper, we argue that these models are tightly constrained by the axion weak
gravity conjecture: for typical parameter values, the axion decay constant must
satisfy $f < 0.008 M_{\textrm{Pl}}$, which is smaller than the axion decay
constants appearing in the vast majority of early dark energy models to date.
We discuss possible ways to evade or loosen this constraint, arguing that its
loopholes are small and difficult to thread. This suggests that it may prove
challenging to realize early dark energy models in a UV complete theory of
quantum gravity.
|
[{'version': 'v1', 'created': 'Thu, 10 Mar 2022 19:00:00 GMT'}]
|
2023-01-25
|
[array(['Rudelius', 'Tom', ''], dtype=object)]
|
1,350 |
0807.1668
|
Renaud Goullioud
|
R. Goullioud, J. H. Catanzarite, F. G. Dekens, M. Shao, J. C. Marr IV
|
Overview of the SIM PlanetQuest Light (SIM-Lite) mission concept
|
SPIE conference on Optical and Infrared Interferometry, 12 pages
| null |
10.1117/12.789988
| null |
astro-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The Space Interferometry Mission PlanetQuest Light (or SIM-Lite) is a new
concept for a space borne astrometric instrument, to be located in a solar
Earth-trailing orbit. SIM-Lite utilizes technology developed over the past ten
years for the SIM mission. The instrument consists of two Michelson stellar
interferometers and a precision telescope. The first interferometer chops
between the target star and a set of Reference stars. The second interferometer
monitors the attitude of the instrument in the direction of the target star.
The telescope monitors the attitude of the instrument in the other two
directions.
SIM-Lite will be capable of one micro-arc-second narrow angle astrometry on
magnitude 6 or brighter stars, relative to magnitude 9 Reference stars in a two
degree field. During the 5 year mission, SIM-Lite would search 65 nearby stars
for planets of masses down to one Earth mass, in the Habitable Zone, which have
orbit periods of less than 3 years. SIM-Lite will also perform global
astrometry on a variety of astrophysics objects, reaching 4.5 micro-arc-seconds
absolute position and parallax measurements. As a pointed instrument, SIM-Lite
will be capable of achieving 8 micro-arc-second astrometric accuracy on 19th
visual magnitude objects and 15 micro-arc-second astrometric accuracy on 20th
visual magnitude objects after 100 hours of integration.
This paper will describe the instrument, how it will do its astrometric
measurements and the expected performance based on the current technology.
|
[{'version': 'v1', 'created': 'Thu, 10 Jul 2008 14:51:52 GMT'}]
|
2009-11-13
|
[array(['Goullioud', 'R.', ''], dtype=object)
array(['Catanzarite', 'J. H.', ''], dtype=object)
array(['Dekens', 'F. G.', ''], dtype=object)
array(['Shao', 'M.', ''], dtype=object)
array(['Marr', 'J. C.', 'IV'], dtype=object)]
|
1,351 |
2008.03419
|
Ko-Fan Huang
|
Ko-Fan Huang, Yuval Ronen, R\'egis M\'elin, Denis Feinberg, Kenji
Watanabe, Takashi Taniguchi, Philip Kim
|
Evidence for 4e charge of Cooper quartets in a biased multi-terminal
graphene-based Josephson junction
| null | null |
10.1038/s41467-022-30732-7
| null |
cond-mat.mes-hall cond-mat.supr-con
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In a Josephson junction (JJ), Cooper pairs are transported via Andreev bound
states (ABSs) between superconductors. The ABSs in the weak link of
multi-terminal (MT) JJs can coherently hybridize two Cooper pairs among
different superconducting electrodes, resulting in the Cooper quartet (CQ)
involving four fermions entanglement. The energy spectrum of these CQ-ABS can
be controlled by biasing MT-JJs due to the AC Josephson effect. Here, using
gate tunable four-terminal graphene JJs complemented with a flux loop, we
construct CQs with a tunable spectrum. The critical quartet supercurrent
exhibits magneto-oscillation associated with a charge of 4e; thereby presenting
the evidence for interference between entangled CQ-ABS. At a finite bias
voltage, we find the DC quartet supercurrent shows non-monotonic bias dependent
behavior, attributed to Landau-Zener transitions between different Floquet
bands. Our experimental demonstration of coherent non-equilibrium CQ-ABS sets a
path for design of artificial topological materials based on MT-JJs.
|
[{'version': 'v1', 'created': 'Sat, 8 Aug 2020 02:23:13 GMT'}
{'version': 'v2', 'created': 'Thu, 16 Jun 2022 20:30:39 GMT'}]
|
2022-06-20
|
[array(['Huang', 'Ko-Fan', ''], dtype=object)
array(['Ronen', 'Yuval', ''], dtype=object)
array(['Mélin', 'Régis', ''], dtype=object)
array(['Feinberg', 'Denis', ''], dtype=object)
array(['Watanabe', 'Kenji', ''], dtype=object)
array(['Taniguchi', 'Takashi', ''], dtype=object)
array(['Kim', 'Philip', ''], dtype=object)]
|
1,352 |
2102.09297
|
Hana Alghamdi
|
Hana Alghamdi and Rozenn Dahyot
|
Sliced $\mathcal{L}_2$ Distance for Colour Grading
|
5 pages, 9 figures
| null | null | null |
cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We propose a new method with $\mathcal{L}_2$ distance that maps one
$N$-dimensional distribution to another, taking into account available
information about correspondences. We solve the high-dimensional problem in 1D
space using an iterative projection approach. To show the potentials of this
mapping, we apply it to colour transfer between two images that exhibit
overlapped scenes. Experiments show quantitative and qualitative competitive
results as compared with the state of the art colour transfer methods.
|
[{'version': 'v1', 'created': 'Thu, 18 Feb 2021 12:17:18 GMT'}]
|
2021-02-19
|
[array(['Alghamdi', 'Hana', ''], dtype=object)
array(['Dahyot', 'Rozenn', ''], dtype=object)]
|
1,353 |
cond-mat/0303450
|
Sumedha
|
Sumedha (TIFR), Deepak Dhar (TIFR)
|
Distribution of Transverse Distances in Directed Animals
|
10 latex pages,1 eps-figure
|
J. Phys. A:Math. Gen.,Vol 36,3701(2003)
|
10.1088/0305-4470/36/13/305
| null |
cond-mat.stat-mech
| null |
We relate $\phi(\bf{x},s)$, the average number of sites at a transverse
distance $\bf{x}$ in the directed animals with $s$ sites in $d$ transverse
dimensions, to the two-point correlation function of a lattice gas with nearest
neighbor exclusion in $d$ dimensions. For large $s$, $\phi(\bf{x},s)$ has the
scaling form $\frac{s}{R_s^d} f(|\bf{x}|/R_s)$, where $R_s$ is the root mean
square radius of gyration of animals of $s$ sites. We determine the exact
scaling function for $d =1$ to be $f(r) = \frac{\sqrt{\pi}}{2
\sqrt{3}}erfc(r/\sqrt{3})$. We also show that $\phi(\bf{x}=0,s)$ can be
determined in terms of the animals number generating function of the directed
animals.
|
[{'version': 'v1', 'created': 'Fri, 21 Mar 2003 08:56:20 GMT'}]
|
2009-11-10
|
[array(['Sumedha', '', '', 'TIFR'], dtype=object)
array(['Dhar', 'Deepak', '', 'TIFR'], dtype=object)]
|
1,354 |
1211.1031
|
Joshua Pepper
|
Joshua Pepper, Robert J. Siverd, Thomas G. Beatty, B. Scott Gaudi,
Keivan G. Stassun, Jason Eastman, Karen Collins, David W. Latham, Allyson
Bieryla, Lars A. Buchhave, Eric L. N. Jensen, Mark Manner, Kaloyan Penev,
Justin R. Crepp, Phillip A. Cargile, Saurav Dhital, Michael L. Calkins,
Gilbert A. Esquerdo, Perry Berlind, Benjamin J. Fulton, Rachel Street, Bo Ma,
Jian Ge, Ji Wang, Qingqing Mao, Alexander J. W. Richert, Andrew Gould, Darren
L. DePoy, John F. Kielkopf, Jennifer L. Marshall, Richard W. Pogge, Robert P.
Stefanik, Mark Trueblood, Patricia Trueblood
|
KELT-3b: A Hot Jupiter Transiting a V=9.8 Late-F Star
|
12 pages, 12 figures, accepted to ApJ
| null |
10.1088/0004-637X/773/1/64
| null |
astro-ph.EP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We report the discovery of KELT-3b, a moderately inflated transiting hot
Jupiter with a mass of 1.477 (-0.067, +0.066) M_J, and radius of 1.345 +/-
0.072 R_J, with an orbital period of 2.7033904 +/- 0.000010 days. The host
star, KELT-3, is a V=9.8 late F star with M_* = 1.278 (-0.061, +0.063) M_sun,
R_* = 1.472 (-0.067, +0.065) R_sun, T_eff = 6306 (-49, +50) K, log(g) = 4.209
(-0.031, +0.033), and [Fe/H] = 0.044 (-0.082, +0.080), and has a likely proper
motion companion. KELT-3b is the third transiting exoplanet discovered by the
KELT survey, and is orbiting one of the 20 brightest known transiting planet
host stars, making it a promising candidate for detailed characterization
studies. Although we infer that KELT-3 is significantly evolved, a preliminary
analysis of the stellar and orbital evolution of the system suggests that the
planet has likely always received a level of incident flux above the
empirically-identified threshold for radius inflation suggested by Demory &
Seager (2011).
|
[{'version': 'v1', 'created': 'Mon, 5 Nov 2012 21:01:21 GMT'}
{'version': 'v2', 'created': 'Tue, 4 Jun 2013 21:11:40 GMT'}]
|
2015-06-12
|
[array(['Pepper', 'Joshua', ''], dtype=object)
array(['Siverd', 'Robert J.', ''], dtype=object)
array(['Beatty', 'Thomas G.', ''], dtype=object)
array(['Gaudi', 'B. Scott', ''], dtype=object)
array(['Stassun', 'Keivan G.', ''], dtype=object)
array(['Eastman', 'Jason', ''], dtype=object)
array(['Collins', 'Karen', ''], dtype=object)
array(['Latham', 'David W.', ''], dtype=object)
array(['Bieryla', 'Allyson', ''], dtype=object)
array(['Buchhave', 'Lars A.', ''], dtype=object)
array(['Jensen', 'Eric L. N.', ''], dtype=object)
array(['Manner', 'Mark', ''], dtype=object)
array(['Penev', 'Kaloyan', ''], dtype=object)
array(['Crepp', 'Justin R.', ''], dtype=object)
array(['Cargile', 'Phillip A.', ''], dtype=object)
array(['Dhital', 'Saurav', ''], dtype=object)
array(['Calkins', 'Michael L.', ''], dtype=object)
array(['Esquerdo', 'Gilbert A.', ''], dtype=object)
array(['Berlind', 'Perry', ''], dtype=object)
array(['Fulton', 'Benjamin J.', ''], dtype=object)
array(['Street', 'Rachel', ''], dtype=object)
array(['Ma', 'Bo', ''], dtype=object)
array(['Ge', 'Jian', ''], dtype=object)
array(['Wang', 'Ji', ''], dtype=object)
array(['Mao', 'Qingqing', ''], dtype=object)
array(['Richert', 'Alexander J. W.', ''], dtype=object)
array(['Gould', 'Andrew', ''], dtype=object)
array(['DePoy', 'Darren L.', ''], dtype=object)
array(['Kielkopf', 'John F.', ''], dtype=object)
array(['Marshall', 'Jennifer L.', ''], dtype=object)
array(['Pogge', 'Richard W.', ''], dtype=object)
array(['Stefanik', 'Robert P.', ''], dtype=object)
array(['Trueblood', 'Mark', ''], dtype=object)
array(['Trueblood', 'Patricia', ''], dtype=object)]
|
1,355 |
2307.02861
|
Jiawei Wang
|
Jiawei Wang, Jia Xu Brian Sia, Xiang Li, Xin Guo, Wanjun Wang,
Zhongliang Qiao, Callum G. Littlejohns. Chongyang Liu, Graham T. Reed, Rusli,
Hong Wang
|
High-speed 4 ${\times}$ 4 silicon photonic electro-optic switch,
operating at the 2 {\mu}m waveband
| null | null | null | null |
physics.optics physics.app-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The escalating need for expansive data bandwidth, and the resulting capacity
constraints of the single mode fiber (SMF) have positioned the 2-${\mu}$m
waveband as a prospective window for emerging applications in optical
communication. This has initiated an ecosystem of silicon photonic components
in the region driven by CMOS compatibility, low cost, high efficiency and
potential for large-scale integration. In this study, we demonstrate a plasma
dispersive, 4 ${\times}$ 4 electro-optic switch operating at the 2-${\mu}$m
waveband with the shortest switching times. The demonstrated switch operates
across a 45-nm bandwidth, with 10-90% rise and 90-10% fall time of 1.78 ns and
3.02 ns respectively. In a 4 ${\times}$ 4 implementation, crosstalk below -15
dB and power consumption below 19.15 mW across all 16 ports are indicated. The
result brings high-speed optical switching to the portfolio of devices at the
promising waveband.
|
[{'version': 'v1', 'created': 'Thu, 6 Jul 2023 08:55:59 GMT'}]
|
2023-07-07
|
[array(['Wang', 'Jiawei', ''], dtype=object)
array(['Sia', 'Jia Xu Brian', ''], dtype=object)
array(['Li', 'Xiang', ''], dtype=object)
array(['Guo', 'Xin', ''], dtype=object)
array(['Wang', 'Wanjun', ''], dtype=object)
array(['Qiao', 'Zhongliang', ''], dtype=object)
array(['Liu', 'Callum G. Littlejohns. Chongyang', ''], dtype=object)
array(['Reed', 'Graham T.', ''], dtype=object)
array(['Rusli', '', ''], dtype=object)
array(['Wang', 'Hong', ''], dtype=object)]
|
1,356 |
2301.05036
|
Ruyuan Wan
|
Ruyuan Wan, Jaehyung Kim, Dongyeop Kang
|
Everyone's Voice Matters: Quantifying Annotation Disagreement Using
Demographic Information
| null | null | null | null |
cs.CL cs.AI cs.CY
|
http://creativecommons.org/licenses/by/4.0/
|
In NLP annotation, it is common to have multiple annotators label the text
and then obtain the ground truth labels based on the agreement of major
annotators. However, annotators are individuals with different backgrounds, and
minors' opinions should not be simply ignored. As annotation tasks become
subjective and topics are controversial in modern NLP tasks, we need NLP
systems that can represent people's diverse voices on subjective matters and
predict the level of diversity. This paper examines whether the text of the
task and annotators' demographic background information can be used to estimate
the level of disagreement among annotators. Particularly, we extract
disagreement labels from the annotators' voting histories in the five
subjective datasets, and then fine-tune language models to predict annotators'
disagreement. Our results show that knowing annotators' demographic
information, like gender, ethnicity, and education level, helps predict
disagreements. In order to distinguish the disagreement from the inherent
controversy from text content and the disagreement in the annotators' different
perspectives, we simulate everyone's voices with different combinations of
annotators' artificial demographics and examine its variance of the finetuned
disagreement predictor. Our paper aims to improve the annotation process for
more efficient and inclusive NLP systems through a novel disagreement
prediction mechanism. Our code and dataset are publicly available.
|
[{'version': 'v1', 'created': 'Thu, 12 Jan 2023 14:04:53 GMT'}]
|
2023-01-13
|
[array(['Wan', 'Ruyuan', ''], dtype=object)
array(['Kim', 'Jaehyung', ''], dtype=object)
array(['Kang', 'Dongyeop', ''], dtype=object)]
|
1,357 |
1306.1226
|
Harvey B. Richer
|
Harvey B. Richer, Jeremy Heyl, Jay Anderson, Jason S. Kalirai, Michael
M. Shara, Aaron Dotter, Gregory G. Fahlman, R. Michael Rich
|
A Dynamical Signature of Multiple Stellar Populations in 47 Tucanae
|
Accepted for publication in the Astrophysical Journal Letters, 5
pages, 4 figures
| null |
10.1088/2041-8205/771/1/L15
| null |
astro-ph.SR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Based on the width of its main sequence, and an actual observed split when
viewed through particular filters, it is widely accepted that 47 Tucanae
contains multiple stellar populations. In this contribution, we divide the
main-sequence of 47 Tuc into four color groups, which presumably represent
stars of various chemical compositions. The kinematic properties of each of
these groups is explored via proper-motions, and a strong signal emerges of
differing proper-motion anisotropies with differing main-sequence color; the
bluest main-sequence stars exhibit the largest proper-motion anisotropy which
becomes undetectable for the reddest stars. In addition, the bluest stars are
also the most centrally concentrated. A simiilar analysis for SMC stars, which
are located in the background of 47 Tuc on our frames, yields none of the
anisotropy exhibited by the 47 Tuc stars. We discuss implications of these
results for possible formation scenarios of the various populations.
|
[{'version': 'v1', 'created': 'Wed, 5 Jun 2013 20:00:00 GMT'}]
|
2015-06-16
|
[array(['Richer', 'Harvey B.', ''], dtype=object)
array(['Heyl', 'Jeremy', ''], dtype=object)
array(['Anderson', 'Jay', ''], dtype=object)
array(['Kalirai', 'Jason S.', ''], dtype=object)
array(['Shara', 'Michael M.', ''], dtype=object)
array(['Dotter', 'Aaron', ''], dtype=object)
array(['Fahlman', 'Gregory G.', ''], dtype=object)
array(['Rich', 'R. Michael', ''], dtype=object)]
|
1,358 |
1606.06877
|
Waqar Ahmed
|
Waqar Ahmed, Osman Hasan and Sofiene Tahar
|
Formal Dependability Modeling and Analysis: A Survey
| null | null | null | null |
cs.SE cs.LO math.LO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Dependability is an umbrella concept that subsumes many key properties about
a system, including reliability, maintainability, safety, availability,
confidentiality, and integrity. Various dependability modeling techniques have
been developed to effectively capture the failure characteristics of systems
over time. Traditionally, dependability models are analyzed using
paper-and-pencil proof methods and computer based simulation tools but their
results cannot be trusted due to their inherent inaccuracy limitations. The
recent developments in probabilistic analysis support using formal methods have
enabled the possibility of accurate and rigorous dependability analysis. Thus,
the usage of formal methods for dependability analysis is widely advocated for
safety-critical domains, such as transportation, aerospace and health. Given
the complementary strengths of mainstream formal methods, like theorem proving
and model checking, and the variety of dependability models judging the most
suitable formal technique for a given dependability model is not a
straightforward task. In this paper, we present a comprehensive review of
existing formal dependability analysis techniques along with their pros and
cons for handling a particular dependability model.
|
[{'version': 'v1', 'created': 'Wed, 22 Jun 2016 10:19:06 GMT'}]
|
2016-06-23
|
[array(['Ahmed', 'Waqar', ''], dtype=object)
array(['Hasan', 'Osman', ''], dtype=object)
array(['Tahar', 'Sofiene', ''], dtype=object)]
|
1,359 |
1605.07032
|
Gabriel Ferreira
|
Gabriel Ferreira and Momin Malik and Christian K\"astner and J\"urgen
Pfeffer and Sven Apel
|
Do #ifdefs Influence the Occurrence of Vulnerabilities? An Empirical
Study of the Linux Kernel
| null | null | null | null |
cs.SE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Preprocessors support the diversification of software products with #ifdefs,
but also require additional effort from developers to maintain and understand
variable code. We conjecture that #ifdefs cause developers to produce more
vulnerable code because they are required to reason about multiple features
simultaneously and maintain complex mental models of dependencies of
configurable code.
We extracted a variational call graph across all configurations of the Linux
kernel, and used configuration complexity metrics to compare vulnerable and
non-vulnerable functions considering their vulnerability history. Our goal was
to learn about whether we can observe a measurable influence of configuration
complexity on the occurrence of vulnerabilities.
Our results suggest, among others, that vulnerable functions have higher
variability than non-vulnerable ones and are also constrained by fewer
configuration options. This suggests that developers are inclined to notice
functions appear in frequently-compiled product variants. We aim to raise
developers' awareness to address variability more systematically, since
configuration complexity is an important, but often ignored aspect of software
product lines.
|
[{'version': 'v1', 'created': 'Mon, 23 May 2016 14:36:46 GMT'}]
|
2016-05-24
|
[array(['Ferreira', 'Gabriel', ''], dtype=object)
array(['Malik', 'Momin', ''], dtype=object)
array(['Kästner', 'Christian', ''], dtype=object)
array(['Pfeffer', 'Jürgen', ''], dtype=object)
array(['Apel', 'Sven', ''], dtype=object)]
|
1,360 |
cs/9905001
|
Rebecca Hwa
|
Rebecca Hwa
|
Supervised Grammar Induction Using Training Data with Limited
Constituent Information
|
7 pages, 2 figures, to appear in the proc. of ACL '99
| null | null | null |
cs.CL
| null |
Corpus-based grammar induction generally relies on hand-parsed training data
to learn the structure of the language. Unfortunately, the cost of building
large annotated corpora is prohibitively expensive. This work aims to improve
the induction strategy when there are few labels in the training data. We show
that the most informative linguistic constituents are the higher nodes in the
parse trees, typically denoting complex noun phrases and sentential clauses.
They account for only 20% of all constituents. For inducing grammars from
sparsely labeled training data (e.g., only higher-level constituent labels), we
propose an adaptation strategy, which produces grammars that parse almost as
well as grammars induced from fully labeled corpora. Our results suggest that
for a partial parser to replace human annotators, it must be able to
automatically extract higher-level constituents rather than base noun phrases.
|
[{'version': 'v1', 'created': 'Sun, 2 May 1999 20:48:21 GMT'}]
|
2007-05-23
|
[array(['Hwa', 'Rebecca', ''], dtype=object)]
|
1,361 |
2203.12605
|
In\'es Mart\'in-de-Santos
|
I Mart\'in-de-Santos
|
Grandes fraudes y gobiernos corporativos en la Econom\'ia desde mediados
del siglo XX
|
12 pages, in Spanish
| null |
10.5281/zenodo.5070443
| null |
q-fin.GN
|
http://creativecommons.org/licenses/by-nc-nd/4.0/
|
The international financial system is currently not yet prepared to face a
foreseeable crisis mainly motivated by the dichotomy between the real economy
and the virtual economy. Skepticism is widespread even when it comes to
investments in sustainable economy. The concentration of capital in a few
persons is one of the greatest risks for the possible reiteration of economic
crises. The benevolent sentences of the courts to some of the fraudsters do not
contribute to dispelling the ghost of fraud nor to the disappearance of tax
havens. From the diachronic perspective, it is observed that economic crises
are increasingly frequent and incidents always in the financial field; which
forces us to rethink an economic model on an international scale in which there
is a greater weight of the economic policy of governments over the power of
multinational companies in the context of globalization. In the context of
Corporate Social Responsibility, Corporate Governance is listed as one of the
fundamental levers to curb large business fraud, but its efficiency seems
insufficient due to the lack of international regulations and the ignorance of
hidden forces in what has been known as fiscal and financial engineering. The
application of liberal policies in an unorthodox way is causing real social
gaps in the distribution of income and is undermining the current capitalist
system. The need to implement corporate governments is recommended as one of
the essential formulas for sustaining the international economic system.
|
[{'version': 'v1', 'created': 'Sun, 6 Feb 2022 20:16:20 GMT'}]
|
2022-03-24
|
[array(['Martín-de-Santos', 'I', ''], dtype=object)]
|
1,362 |
hep-th/9907084
|
Emmanuel Guitter
|
P. Di Francesco, E. Guitter (Saclay), C. Kristjansen (NBI)
|
Integrable 2D Lorentzian Gravity and Random Walks
|
47 pages, 10 figures, harvmac, epsf
|
Nucl.Phys. B567 (2000) 515-553
|
10.1016/S0550-3213(99)00661-6
|
SPhT99/073, NBI-HE-99-22
|
hep-th cond-mat.stat-mech hep-lat
| null |
We introduce and solve a family of discrete models of 2D Lorentzian gravity
with higher curvature, which possess mutually commuting transfer matrices, and
whose spectral parameter interpolates between flat and curved space-times. We
further establish a one-to-one correspondence between Lorentzian triangulations
and directed Random Walks. This gives a simple explanation why the Lorentzian
triangulations have fractal dimension 2 and why the curvature model lies in the
universality class of pure Lorentzian gravity. We also study integrable
generalizations of the curvature model with arbitrary polygonal tiles. All of
them are found to lie in the same universality class.
|
[{'version': 'v1', 'created': 'Mon, 12 Jul 1999 14:28:41 GMT'}]
|
2007-05-23
|
[array(['Di Francesco', 'P.', '', 'Saclay'], dtype=object)
array(['Guitter', 'E.', '', 'Saclay'], dtype=object)
array(['Kristjansen', 'C.', '', 'NBI'], dtype=object)]
|
1,363 |
1909.12005
|
Masoud Fetanat
|
Masoud Fetanat, Michael Stevens, Christopher Hayward and Nigel
Hamilton Lovell
|
A Physiological Control System for an Implantable Heart Pump that
Accommodates for Interpatient and Intrapatient Variations
| null |
http://dx.doi.org/10.1109/TBME.2019.2932233
|
10.1109/TBME.2019.2932233
| null |
eess.SY cs.SY eess.SP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Left ventricular assist devices (LVADs) can provide mechanical support for a
failing heart as bridge to transplant and destination therapy. Physiological
control systems for LVADs should be designed to respond to changes in
hemodynamic across a variety of clinical scenarios and patients by
automatically adjusting the heart pump speed. In this study, a novel adaptive
physiological control system for an implantable heart pump was developed to
respond to interpatient and intrapatient variations to maintain the
left-ventricle-end-diastolic-pressure (LVEDP) in the normal range of 3 to 15
mmHg to prevent ventricle suction and pulmonary congestion. A new algorithm was
also developed to detect LVEDP from pressure sensor measurement in real-time
mode. Model free adaptive control (MFAC) was employed to control the pump speed
via simulation of 100 different patient conditions in each of six different
patient scenarios, and compared to standard PID control. Controller performance
was tracked using the sum of the absolute error (SAE) between the desired and
measured LVEDP. The lower SAE on control tracking performance means the
measured LVEDP follows the desired LVEDP faster and with less amplitude
oscillations preventing ventricle suction and pulmonary congestion (mean and
standard deviation of SAE(mmHg) for all 600 simulations were 18813+-29345 and
24794+-28380 corresponding to MFAC and PID controller respectively). In four
out of six patient scenarios, MFAC control tracking performance was better than
the PID controller. This study shows the control performance can be guaranteed
across different patients and conditions when using MFAC over PID control,
which is a step towards clinical acceptance of these systems.
|
[{'version': 'v1', 'created': 'Thu, 26 Sep 2019 09:55:48 GMT'}]
|
2020-02-14
|
[array(['Fetanat', 'Masoud', ''], dtype=object)
array(['Stevens', 'Michael', ''], dtype=object)
array(['Hayward', 'Christopher', ''], dtype=object)
array(['Lovell', 'Nigel Hamilton', ''], dtype=object)]
|
1,364 |
2306.02522
|
Zijian Xiong
|
Zijian Xiong
|
Lieb-Schultz-Mattis constraint, symmetries, excitation and anomaly of
the quantum spin ice models in the planar pyrochlore lattice
|
15 pages, 9 figures
| null | null | null |
cond-mat.str-el hep-lat hep-th
|
http://creativecommons.org/licenses/by-nc-nd/4.0/
|
We consider the quantum spin ice models in the planar pyrochlore lattice. The
models are obtained by perturbing the Ising model with different lattice
symmetry preserving quantum fluctuations. We map these models to a compact U(1)
lattice gauge theory and discuss its global symmetries which include the 1-form
U(1) global symmetry. Utilizing the higher form generalization of the
Lieb-Schultz-Mattis theorem and also the monopole effect in the compact lattice
gauge theory, we show that these models have "persistent" translation symmetry
breaking valence bond solid phase around the Ising limit even the perturbation
explicitly breaks all the spin rotation symmetry. We find the excitation in
this phase can be described by an abelian Higgs model with charge $\pm2$
monopoles, this model is recently found to have a mixed 't Hooft anomaly. The
one of the consequences of this anomaly is the domain wall in this phase may
support deconfined excitations on it, we explicitly construct a solvable domain
wall carries such anomaly. The spectrum of the excitations is also studied, we
find the spectral weight of the spectrum in the low energy sector along the
high symmetry momentum paths is strongly restricted by the 1-form global
symmetries. Specially, we show the spectrum directly measures on the domain
wall along $q_{2}=\pm q_1$ momentum paths.
|
[{'version': 'v1', 'created': 'Mon, 5 Jun 2023 01:15:14 GMT'}]
|
2023-06-06
|
[array(['Xiong', 'Zijian', ''], dtype=object)]
|
1,365 |
physics/0504212
|
Michal Zochowski
|
Benjamin H. Singer, Miron Derchansky, Peter L. Carlen, and Michal
Zochowski
|
Local driving and global interactions in the progression of seizure
dynamics
| null | null | null | null |
physics.bio-ph physics.med-ph
| null |
The dynamics underlying epileptic seizures are well understood. We present a
novel analysis of seizure-like events (SLEs) in an \textit{ex vivo} whole
hippocampus, as well as a modeling study that sheds light on the underlying
network dynamics. We show that every SLE can be divided into two phases. During
the first, SLE dynamics are driven by the intra-network interaction of a
network exhibiting high internal synchrony. The second phase is characterized
by lead switching, with the leading region exhibiting low internal synchrony.
We show that the second phase dynamics are driven by inter-network feedback
among multiple regions of the hippocampus.
|
[{'version': 'v1', 'created': 'Thu, 28 Apr 2005 18:58:20 GMT'}]
|
2007-05-23
|
[array(['Singer', 'Benjamin H.', ''], dtype=object)
array(['Derchansky', 'Miron', ''], dtype=object)
array(['Carlen', 'Peter L.', ''], dtype=object)
array(['Zochowski', 'Michal', ''], dtype=object)]
|
1,366 |
2010.03204
|
Ricard Delgado-Gonzalo
|
J\'er\^ome Van Zaen and Ricard Delgado-Gonzalo and Damien Ferrario
Mathieu Lemay
|
Cardiac Arrhythmia Detection from ECG with Convolutional Recurrent
Neural Networks
|
18 pages, Published in BIOSTEC 2019
|
BIOSTEC 2019. Communications in Computer and Information Science,
vol 1211 (2020)
|
10.1007/978-3-030-46970-2_15
| null |
cs.LG eess.SP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Except for a few specific types, cardiac arrhythmias are not immediately
life-threatening. However, if not treated appropriately, they can cause serious
complications. In particular, atrial fibrillation, which is characterized by
fast and irregular heart beats, increases the risk of stroke. We propose three
neural network architectures to detect abnormal rhythms from single-lead ECG
signals. These architectures combine convolutional layers to extract high-level
features pertinent for arrhythmia detection from sliding windows and recurrent
layers to aggregate these features over signals of varying durations. We
applied the neural networks to the dataset used for the challenge of Computing
in Cardiology 2017 and a dataset built by joining three databases available on
PhysioNet. Our architectures achieved an accuracy of 86.23% on the first
dataset, similar to the winning entries of the challenge, and an accuracy of
92.02% on the second dataset.
|
[{'version': 'v1', 'created': 'Wed, 7 Oct 2020 06:24:15 GMT'}]
|
2020-10-08
|
[array(['Van Zaen', 'Jérôme', ''], dtype=object)
array(['Delgado-Gonzalo', 'Ricard', ''], dtype=object)
array(['Lemay', 'Damien Ferrario Mathieu', ''], dtype=object)]
|
1,367 |
1603.00246
|
Geraldo Botelho
|
Geraldo Botelho and Ewerton R. Torres
|
Polynomial ideals from a nonlinear viewpoint
| null | null | null | null |
math.FA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Classes of homogeneous polynomials between Banach spaces have been studied in
the last three decades from the perspective of the so-called ideal property: if
a polynomial P belongs to a class Q, then the composition u o P o v of P with
linear operators u and v belongs to Q as well. In an attempt to explore the
nonlinearity of the subject in a more consistent way, and taking into account
recent results in the field, in this paper we propose the study of classes of
homogeneous polynomials that are stable under the composition with homogeneous
polynomials. Some importante classes justify the study of the intermediate
concept of classes of polynomials Q such that if P belongs to Q, u is a linear
operator and Q is a homogeneous polynomial, then u o P o Q belongs to Q.
|
[{'version': 'v1', 'created': 'Tue, 1 Mar 2016 12:21:51 GMT'}]
|
2016-10-04
|
[array(['Botelho', 'Geraldo', ''], dtype=object)
array(['Torres', 'Ewerton R.', ''], dtype=object)]
|
1,368 |
2104.09557
|
Dylan Cope
|
Dylan Cope and Nandi Schoots
|
Learning to Communicate with Strangers via Channel Randomisation Methods
| null |
4th Workshop on Emergent Communication at NeurIPS 2020
| null | null |
cs.LG cs.AI cs.CL
|
http://creativecommons.org/licenses/by/4.0/
|
We introduce two methods for improving the performance of agents meeting for
the first time to accomplish a communicative task. The methods are: (1)
`message mutation' during the generation of the communication protocol; and (2)
random permutations of the communication channel. These proposals are tested
using a simple two-player game involving a `teacher' who generates a
communication protocol and sends a message, and a `student' who interprets the
message. After training multiple agents via self-play we analyse the
performance of these agents when they are matched with a stranger, i.e. their
zero-shot communication performance. We find that both message mutation and
channel permutation positively influence performance, and we discuss their
effects.
|
[{'version': 'v1', 'created': 'Mon, 19 Apr 2021 18:42:48 GMT'}]
|
2021-04-21
|
[array(['Cope', 'Dylan', ''], dtype=object)
array(['Schoots', 'Nandi', ''], dtype=object)]
|
1,369 |
2003.06064
|
Aditya Chilukuri
|
Aditya Chilukuri, Josh Milthorpe, Beau Johnston
|
Characterizing Optimizations to Memory Access Patterns using
Architecture-Independent Program Features
|
11 pages, 5 figures. To be published in The 8th International
Workshop on OpenCL, SYCL, Vulkan and SPIR-V, Munich 2020
| null | null | null |
cs.DC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
High-performance computing developers are faced with the challenge of
optimizing the performance of OpenCL workloads on diverse architectures. The
Architecture-Independent Workload Characterization (AIWC) tool is a plugin for
the Oclgrind OpenCL simulator that gathers metrics of OpenCL programs that can
be used to understand and predict program performance on an arbitrary given
hardware architecture. However, AIWC metrics are not always easily interpreted
and do not reflect some important memory access patterns affecting efficiency
across architectures. We propose a new metric of parallel spatial locality --
the closeness of memory accesses simultaneously issued by OpenCL work-items
(threads). We implement the parallel spatial locality metric in the AIWC
framework, and analyse gathered results on matrix multiply and the Extended
OpenDwarfs OpenCL benchmarks. The differences in the observed parallel spatial
locality metric across implementations of matrix multiply reflect the
optimizations performed. The new metric can be used to distinguish between the
OpenDwarfs benchmarks based on the memory access patterns affecting their
performance on various architectures. The improvements suggested to AIWC will
help HPC developers better understand memory access patterns of complex codes
and guide optimization of codes for arbitrary hardware targets.
|
[{'version': 'v1', 'created': 'Thu, 12 Mar 2020 23:43:53 GMT'}]
|
2020-03-16
|
[array(['Chilukuri', 'Aditya', ''], dtype=object)
array(['Milthorpe', 'Josh', ''], dtype=object)
array(['Johnston', 'Beau', ''], dtype=object)]
|
1,370 |
hep-th/9407162
| null |
R. Bonisch
|
Transition from SU(2)_L x SU(2)_R x U(1)_(B-L) Representation to SU(2)_L
x U(1)_Y by q-Deformation and the Corresponding Classical Breaking Term of
Chiral U(2)
|
DESY 94-129, 12 pages
|
Annalen Phys. 4 (1995) 345-353
|
10.1002/andp.19955070407
| null |
hep-th hep-ph
| null |
The minimal Standard Model exhibits a nontrivial chiral U(2) symmetry if the
vev and the hypercharge splitting (Delta) of right-handed leptons (quarks) in a
family vanish and Q=T_0 + Y independently in each helicity sector. As a
generalization, we start with SU(2)_L x SU(2)_R x U(1)_{(B-L)} and introduce
Delta as a continuous parameter which is a measure of explicit symmetry
breakdown. Values of Delta between zero and 1/2 take the neutral generator of
the isospin-1/2 representation to the singlet representation, i.e. `deformes'
the LR representation into the minimal Standard one. The corresponding
classical O(3)-breaking term is a magnetic field perpendicular to the x_3-axis.
A simple mapping on the fundamental Drinfeld-Jimbo q-deformed SU(2)
representation is given.
|
[{'version': 'v1', 'created': 'Mon, 25 Jul 1994 13:41:18 GMT'}]
|
2009-10-28
|
[array(['Bonisch', 'R.', ''], dtype=object)]
|
1,371 |
2002.05461
|
Gert de Cooman
|
Gert de Cooman
|
Coherent and Archimedean choice in general Banach spaces
|
34 pages, 7 figures
| null | null | null |
cs.AI
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
I introduce and study a new notion of Archimedeanity for binary and
non-binary choice between options that live in an abstract Banach space,
through a very general class of choice models, called sets of desirable option
sets. In order to be able to bring an important diversity of contexts into the
fold, amongst which choice between horse lottery options, I pay special
attention to the case where these linear spaces don't include all `constant'
options.I consider the frameworks of conservative inference associated with
Archimedean (and coherent) choice models, and also pay quite a lot of attention
to representation of general (non-binary) choice models in terms of the
simpler, binary ones.The representation theorems proved here provide an
axiomatic characterisation for, amongst many other choice methods, Levi's
E-admissibility and Walley-Sen maximality.
|
[{'version': 'v1', 'created': 'Thu, 13 Feb 2020 11:57:50 GMT'}
{'version': 'v2', 'created': 'Sun, 5 Apr 2020 14:38:08 GMT'}
{'version': 'v3', 'created': 'Mon, 30 Nov 2020 14:05:35 GMT'}
{'version': 'v4', 'created': 'Fri, 9 Jul 2021 13:03:31 GMT'}]
|
2021-07-12
|
[array(['de Cooman', 'Gert', ''], dtype=object)]
|
1,372 |
1804.01893
|
Martin Lesourd Mr
|
Martin Lesourd
|
A new singularity theorem for black holes which allows chronology
violation in the interior
|
Classical.Quantum.Gravity, accepted.
http://iopscience.iop.org/article/10.1088/1361-6382/aae75c
| null |
10.1088/1361-6382/aae75c
| null |
gr-qc
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The interior of the Kerr solution is singular and achronological. The classic
singularity theorem by Hawking and Penrose relies on chronology, and thus does
not apply to the Kerr solution. An improvement of their theorem by Kriele
partially removes the requirement of chronology. However, both of these
singularity theorems fail to give any information on the type or location of
the incomplete geodesics. Here, using recent results of Minguzzi, we prove a
new singularity theorem, specifically designed to apply to black holes, which
enables locating null incomplete geodesics within the black hole interior, all
the while allowing certain forms of chronology violation in the interior.
|
[{'version': 'v1', 'created': 'Thu, 5 Apr 2018 15:02:24 GMT'}
{'version': 'v2', 'created': 'Thu, 10 May 2018 19:27:15 GMT'}
{'version': 'v3', 'created': 'Thu, 16 Aug 2018 09:18:16 GMT'}
{'version': 'v4', 'created': 'Wed, 22 Aug 2018 10:15:15 GMT'}
{'version': 'v5', 'created': 'Fri, 12 Oct 2018 15:15:52 GMT'}]
|
2018-12-05
|
[array(['Lesourd', 'Martin', ''], dtype=object)]
|
1,373 |
2305.05960
|
Suzanne Lafon
|
Suzanne Lafon, Tiago Outerelo-Corvo, Marion Grzelka, Arnaud H\'elary,
Philipp Gutfreund, Liliane L\'eger, Alexis Chennevi\`ere, Fr\'ed\'eric
Restagno
|
Simultaneous depletion and adsorption in polymer solutions near a solid
wall
|
6 pages ; 3 figures
| null | null | null |
cond-mat.soft physics.chem-ph
|
http://creativecommons.org/licenses/by-sa/4.0/
|
Polymer solutions exhibit peculiar properties near surfaces: polymer chains
either adsorb onto or can be repelled by the wall. Only a few techniques are
able to probe their structure in the vicinity of solid substrates, because of
the small length scales over which liquids are influenced by the wall. In this
paper, we use neutron reflectivity measurements at the interface between a
polystyrene semidilute solution in a good solvent and a smooth sapphire
surface. We show that polymer chains are globally depleted from the solid
surface, but contrary to what is generally assumed, this does not prevent some
chains to still adsorb on the wall. We also observe that the Newtonian flow of
the solution has a negligible effect on the size of the depletion layer, which
is a hypothesis often made but rarely measured in the literature.
|
[{'version': 'v1', 'created': 'Wed, 10 May 2023 08:10:16 GMT'}]
|
2023-05-11
|
[array(['Lafon', 'Suzanne', ''], dtype=object)
array(['Outerelo-Corvo', 'Tiago', ''], dtype=object)
array(['Grzelka', 'Marion', ''], dtype=object)
array(['Hélary', 'Arnaud', ''], dtype=object)
array(['Gutfreund', 'Philipp', ''], dtype=object)
array(['Léger', 'Liliane', ''], dtype=object)
array(['Chennevière', 'Alexis', ''], dtype=object)
array(['Restagno', 'Frédéric', ''], dtype=object)]
|
1,374 |
1708.06431
|
Tina Janne Schmidt
|
Cristina G. Fernandes, Tina Janne Schmidt, Anusch Taraz
|
Approximating the Minimum $k$-Section Width in Bounded-Degree Trees with
Linear Diameter
|
15 pages, 5 figures
| null | null | null |
math.CO cs.DM
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Minimum $k$-Section denotes the NP-hard problem to partition the vertex set
of a graph into $k$ sets of sizes as equal as possible while minimizing the cut
width, which is the number of edges between these sets. When $k$ is an input
parameter and $n$ denotes the number of vertices, it is NP-hard to approximate
the width of a minimum $k$-section within a factor of $n^c$ for any $c<1$, even
when restricted to trees with constant diameter. Here, we show that every tree
$T$ allows a $k$-section of width at most $(k-1) (2 + 16n / diam(T) )
\Delta(T)$. This implies a polynomial-time constant-factor approximation for
the Minimum $k$-Section Problem when restricted to trees with linear diameter
and constant maximum degree. Moreover, we extend our results from trees to
arbitrary graphs with a given tree decomposition.
|
[{'version': 'v1', 'created': 'Mon, 21 Aug 2017 22:02:30 GMT'}]
|
2017-08-23
|
[array(['Fernandes', 'Cristina G.', ''], dtype=object)
array(['Schmidt', 'Tina Janne', ''], dtype=object)
array(['Taraz', 'Anusch', ''], dtype=object)]
|
1,375 |
0708.4184
|
Bing He
|
Bing He, J\'anos A. Bergou
|
Entanglement transformation with no classical communication
|
published version
|
Phys. Rev. A 78, 062328 (2008)
|
10.1103/PhysRevA.78.062328
| null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present an optimal scheme to realize the transformations between single
copies of two bipartite entangled states without classical communication
between the sharing parties. The scheme achieves the upper bound for the
success probabilities [PRA 63, 022301 (2001), PRL 83, 1455 (1999)] of
generating maximally entangled states if applied to entanglement concentration.
Such strategy also dispenses with the interaction with an ancilla system in the
implementation. We also show that classical communications are indispensable in
realizing the deterministic transformations of a single bipartite entangled
state. With a finite number of identical pairs of two entangled bosons, on the
other hand, we can realize the deterministic transformation to any target
entangled state of equal or less Schmidt rank through an extension of the
scheme.
|
[{'version': 'v1', 'created': 'Thu, 30 Aug 2007 15:18:39 GMT'}
{'version': 'v2', 'created': 'Tue, 4 Sep 2007 03:23:37 GMT'}
{'version': 'v3', 'created': 'Tue, 11 Sep 2007 03:32:22 GMT'}
{'version': 'v4', 'created': 'Tue, 18 Sep 2007 17:35:21 GMT'}
{'version': 'v5', 'created': 'Fri, 16 Nov 2007 22:51:17 GMT'}
{'version': 'v6', 'created': 'Mon, 4 Feb 2008 04:21:38 GMT'}
{'version': 'v7', 'created': 'Thu, 3 Jul 2008 13:05:20 GMT'}
{'version': 'v8', 'created': 'Thu, 27 Nov 2008 03:12:18 GMT'}]
|
2008-12-17
|
[array(['He', 'Bing', ''], dtype=object)
array(['Bergou', 'János A.', ''], dtype=object)]
|
1,376 |
1308.2721
|
Marc Carnovale
|
Marc Carnovale
|
Gowers norms for singular measures
|
A portion of these results were included in the author's Masters
Essay
| null | null | null |
math.CA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Gowers introduced the notion of uniformity norm $\|f\|_{U^k(G)}$ of a bounded
function $f:G\rightarrow\mathbb{R}$ on an abelian group $G$ in order to provide
a Fourier-theoretic proof of Szemeredi's Theorem, that is, that a subset of the
integers of positive upper density contains arbitrarily long arithmetic
progressions. Since then, Gowers norms have found a number of other uses, both
within and outside of Additive Combinatorics. The $U^k$ norm is defined in
terms of an operator $\triangle^k : L^{\infty}(G)\mapsto L^{\infty} (G^{k+1})$.
In this paper, we introduce an analogue of the object $\triangle^k f$ when
$f$ is a singular measure on the torus $\mathbb{T}^d$, and similarly an object
$\|\mu\|_{U^k}$. We provide criteria for $\triangle^k \mu$ to exist, which
turns out to be equivalent to finiteness of $\||\mu|\|_{U^k}$, and show that
when $\mu$ is absolutely continuous with density $f$, then the objects which we
have introduced are reduced to the standard $\triangle^kf$ and
$\|f\|_{U^k(\mathbb{T})}$. We further introduce a higher-order inner product
between measures of finite $U^k$ norm and prove a Gowers-Cauchy-Schwarz
inequality for this inner product.
|
[{'version': 'v1', 'created': 'Tue, 13 Aug 2013 00:06:33 GMT'}
{'version': 'v2', 'created': 'Wed, 14 Aug 2013 16:41:28 GMT'}
{'version': 'v3', 'created': 'Sun, 18 Jan 2015 03:37:10 GMT'}]
|
2015-01-20
|
[array(['Carnovale', 'Marc', ''], dtype=object)]
|
1,377 |
1610.00698
|
Naduvath Sudev
|
P. K. Ashraf, K. A. Germina and N. K. Sudev
|
A Study on Set-Valuations of Signed Graphs
|
8 pages, submitted to Carpathian Mathematical Publications. arXiv
admin note: text overlap with arXiv:1609.00295
| null | null |
PKA-KAG-NKS-002/2016-17
|
math.GM
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Let $X$ be a non-empty ground set and $\mathcal{P}(X)$ be its power set. A
set-labeling (or a set-valuation) of a graph $G$ is an injective set-valued
function $f:V(G)\to \mathcal{P}(X)$ such that the induced function
$f^\oplus:E(G) \to \mathcal{P}(X)$ is defined by $f^\oplus(uv) = f(u)\oplus
f(v)$, where $f(u)\oplus f(v)$ is the symmetric difference of the sets $f(u)$
and $f(v)$. A graph which admits a set-labeling is known to be a set-labeled
graph. A set-labeling $f$ of a graph $G$ is said to be a set-indexer of $G$ if
the associated function $f^\oplus$ is also injective. In this paper, we define
the notion of set-valuations of signed graphs and discuss certain properties of
signed graphs which admits certain types of set-valuations.
|
[{'version': 'v1', 'created': 'Sat, 1 Oct 2016 08:20:36 GMT'}]
|
2016-10-05
|
[array(['Ashraf', 'P. K.', ''], dtype=object)
array(['Germina', 'K. A.', ''], dtype=object)
array(['Sudev', 'N. K.', ''], dtype=object)]
|
1,378 |
1606.02072
|
Sergiy Mankovsky
|
S. Mankovsky, S. Polesya, K. Chadova, H. Ebert, J. B. Staunton, T.
Gruenbaum, M. A. W. Schoen, C. H. Back, X. Z. Chen, C. Song
|
The temperature dependence of FeRh's transport properties
| null |
Phys. Rev. B 95, 155139 (2017)
|
10.1103/PhysRevB.95.155139
| null |
cond-mat.mtrl-sci
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The finite-temperature transport properties of FeRh compounds are
investigated by first-principles Density Functional Theory-based calculations.
The focus is on the behavior of the longitudinal resistivity with rising
temperature, which exhibits an abrupt decrease at the metamagnetic transition
point, $T = T_m$ between ferro- and antiferromagnetic phases. A detailed
electronic structure investigation for $T \geq 0$ K explains this feature and
demonstrates the important role of (i) the difference of the electronic
structure at the Fermi level between the two magnetically ordered states and
(ii) the different degree of thermally induced magnetic disorder in the
vicinity of $T_m$, giving different contributions to the resistivity. To
support these conclusions, we also describe the temperature dependence of the
spin-orbit induced anomalous Hall resistivity and Gilbert damping parameter.
For the various response quantities considered the impact of thermal lattice
vibrations and spin fluctuations on their temperature dependence is
investigated in detail. Comparison with corresponding experimental data finds
in general a very good agreement.
|
[{'version': 'v1', 'created': 'Tue, 7 Jun 2016 09:22:35 GMT'}]
|
2017-05-03
|
[array(['Mankovsky', 'S.', ''], dtype=object)
array(['Polesya', 'S.', ''], dtype=object)
array(['Chadova', 'K.', ''], dtype=object)
array(['Ebert', 'H.', ''], dtype=object)
array(['Staunton', 'J. B.', ''], dtype=object)
array(['Gruenbaum', 'T.', ''], dtype=object)
array(['Schoen', 'M. A. W.', ''], dtype=object)
array(['Back', 'C. H.', ''], dtype=object)
array(['Chen', 'X. Z.', ''], dtype=object)
array(['Song', 'C.', ''], dtype=object)]
|
1,379 |
2012.09193
|
Sebasti\'an Bahamonde Dr
|
Sebastian Bahamonde, Jorge Gigante Valcarcel, Laur J\"arv, Christian
Pfeifer
|
Exploring Axial Symmetry in Modified Teleparallel Gravity
|
26 pages, 1 figure. Matches published version in PRD
|
Phys. Rev. D 103, 044058 (2021)
|
10.1103/PhysRevD.103.044058
| null |
gr-qc
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Axially symmetric spacetimes play an important role in the relativistic
description of rotating astrophysical objects like black holes, stars, etc. In
gravitational theories that venture beyond the usual Riemannian geometry by
allowing independent connection components, the notion of symmetry concerns,
not just the metric, but also the connection. As discovered recently, in
teleparallel geometries, axial symmetry can be realised in two branches, while
only one of these has a continuous spherically symmetric limit. In the current
paper, we consider a very generic $f(T,B,\phi,X)$ family of teleparallel
gravities, whose action depends on the torsion scalar $T$ and the boundary term
$B$, as well as a scalar field $\phi$ with its kinetic term $X$. As the field
equations can be decomposed into symmetric and antisymmetric (spin connection)
parts, we thoroughly analyse the antisymmetric equations and look for solutions
of axial spacetimes which could be used as ans\"atze to tackle the symmetric
part of the field equations. In particular, we find solutions corresponding to
a generalisation of the Taub-NUT metric, and the slowly rotating Kerr
spacetime. Since this work also concerns a wider issue of how to determine the
spin connection in teleparallel gravity, we also show that the method of
"turning off gravity" proposed in the literature, does not always produce a
solution to the antisymmetric equations.
|
[{'version': 'v1', 'created': 'Wed, 16 Dec 2020 19:00:04 GMT'}
{'version': 'v2', 'created': 'Thu, 25 Feb 2021 17:40:39 GMT'}]
|
2021-02-26
|
[array(['Bahamonde', 'Sebastian', ''], dtype=object)
array(['Valcarcel', 'Jorge Gigante', ''], dtype=object)
array(['Järv', 'Laur', ''], dtype=object)
array(['Pfeifer', 'Christian', ''], dtype=object)]
|
1,380 |
1509.01003
|
Falk Wittel K.
|
Humberto A. Carmona, Falk K. Wittel, Ferenc Kun
|
From fracture to fragmentation: discrete element modeling -- Complexity
of crackling noise and fragmentation phenomena revealed by discrete element
simulations
| null |
European Physics Journal Special Topics, 223 (11/2014) 2369-2382
|
10.1140/epjst/e2014-02270-3
| null |
cond-mat.mtrl-sci cond-mat.stat-mech
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Discrete element modelling (DEM) is one of the most efficient computational
approaches to the fracture processes of heterogeneous materials on mesoscopic
scales. From the dynamics of single crack propagation through the statistics of
crack ensembles to the rapid fragmentation of materials DEM had a substantial
contribution to our understanding over the past decades. Recently, the
combination of DEM with other simulation techniques like Finite Element
Modelling further extended the field of applicability. In this paper we briefly
review the motivations and basic idea behind the DEM approach to cohesive
particulate matter and then we give an overview of on-going developments and
applications of the method focusing on two fields where recent success has been
achieved. We discuss current challenges of this rapidly evolving field and
outline possible future perspectives and debates.
|
[{'version': 'v1', 'created': 'Thu, 3 Sep 2015 09:35:37 GMT'}]
|
2015-09-09
|
[array(['Carmona', 'Humberto A.', ''], dtype=object)
array(['Wittel', 'Falk K.', ''], dtype=object)
array(['Kun', 'Ferenc', ''], dtype=object)]
|
1,381 |
math/0703695
|
Alberto Corso
|
Alberto Corso and Uwe Nagel
|
Specializations of Ferrers ideals
|
10 pages, 7 figures
| null | null | null |
math.AC math.CO
| null |
We introduce a specialization technique in order to study monomial ideals
that are generated in degree two by using our earlier results about Ferrers
ideals. It allows us to describe explicitly a cellular minimal free resolution
of various ideals including any strongly stable and any squarefree strongly
stable ideal whose minimal generators have degree two. In particular, this
shows that threshold graphs can be obtained as specializations of Ferrers
graphs, which explains their similar properties.
|
[{'version': 'v1', 'created': 'Fri, 23 Mar 2007 12:54:54 GMT'}]
|
2007-05-23
|
[array(['Corso', 'Alberto', ''], dtype=object)
array(['Nagel', 'Uwe', ''], dtype=object)]
|
1,382 |
1912.08442
|
Xinting Huang
|
Xinting Huang, Jianzhong Qi, Yu Sun, Rui Zhang
|
MALA: Cross-Domain Dialogue Generation with Action Learning
|
Update: Accepted to Proceedings of AAAI 2020
| null |
10.1609/aaai.v34i05.6306
| null |
cs.CL cs.AI cs.LG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Response generation for task-oriented dialogues involves two basic
components: dialogue planning and surface realization. These two components,
however, have a discrepancy in their objectives, i.e., task completion and
language quality. To deal with such discrepancy, conditioned response
generation has been introduced where the generation process is factorized into
action decision and language generation via explicit action representations. To
obtain action representations, recent studies learn latent actions in an
unsupervised manner based on the utterance lexical similarity. Such an action
learning approach is prone to diversities of language surfaces, which may
impinge task completion and language quality. To address this issue, we propose
multi-stage adaptive latent action learning (MALA) that learns semantic latent
actions by distinguishing the effects of utterances on dialogue progress. We
model the utterance effect using the transition of dialogue states caused by
the utterance and develop a semantic similarity measurement that estimates
whether utterances have similar effects. For learning semantic actions on
domains without dialogue states, MsALA extends the semantic similarity
measurement across domains progressively, i.e., from aligning shared actions to
learning domain-specific actions. Experiments using multi-domain datasets, SMD
and MultiWOZ, show that our proposed model achieves consistent improvements
over the baselines models in terms of both task completion and language
quality.
|
[{'version': 'v1', 'created': 'Wed, 18 Dec 2019 08:14:10 GMT'}
{'version': 'v2', 'created': 'Tue, 13 Oct 2020 13:33:38 GMT'}]
|
2020-10-14
|
[array(['Huang', 'Xinting', ''], dtype=object)
array(['Qi', 'Jianzhong', ''], dtype=object)
array(['Sun', 'Yu', ''], dtype=object)
array(['Zhang', 'Rui', ''], dtype=object)]
|
1,383 |
gr-qc/0304080
|
Luc Blanchet
|
Luc Blanchet
|
Time-symmetric initial data for binary black holes in numerical
relativity
|
27 pages, to appear in Phys. Rev. D
|
Phys.Rev. D68 (2003) 084002
|
10.1103/PhysRevD.68.084002
| null |
gr-qc
| null |
We look for physically realistic initial data in numerical relativity which
are in agreement with post-Newtonian approximations. We propose a particular
solution of the time-symmetric constraint equation, appropriate to two
momentarily static black holes, in the form of a conformal decomposition of the
spatial metric. This solution is isometric to the post-Newtonian metric up to
the 2PN order. It represents a non-linear deformation of the solution of Brill
and Lindquist, i.e. an asymptotically flat region is connected to two
asymptotically flat (in a certain weak sense) sheets, that are the images of
the two singularities through appropriate inversion transformations. The total
ADM mass M as well as the individual masses m_1 and m_2 (when they exist) are
computed by surface integrals performed at infinity. Using second order
perturbation theory on the Brill-Lindquist background, we prove that the
binary's interacting mass-energy M-m_1-m_2 is well-defined at the 2PN order and
in agreement with the known post-Newtonian result.
|
[{'version': 'v1', 'created': 'Tue, 22 Apr 2003 13:26:34 GMT'}
{'version': 'v2', 'created': 'Fri, 20 Jun 2003 18:29:03 GMT'}]
|
2009-11-10
|
[array(['Blanchet', 'Luc', ''], dtype=object)]
|
1,384 |
1402.6639
|
Vasiliy P. Neznamov
|
M.V. Gorbatenko, V.P. Neznamov
|
Equivalence and Hermiticity of Dirac Hamiltonians in the Kerr
gravitational field
|
16 pages, accepted for publication in Annalen der Physik
| null |
10.1002/andp.201400035
| null |
gr-qc
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In the paper, for the Kerr field, we prove that Chandrasekhar's Dirac
Hamiltonian and the self-adjoint Hamiltonian H_{\eta} with a flat scalar
product of the wave functions are physically equivalent. Operators of
transformation of Chandrasekhar's Hamiltonian and wave functions to the
\eta-representation with a flat scalar product are defined explicitly. If the
domain of the wave functions of Dirac's equation in the Kerr field is bounded
by two-dimensional surfaces of revolution around the z axis, Chandrasekhar's
Hamiltonian and the self-adjoint Hamiltonian in the \eta-representation are
Hermitian with equality of the scalar products,(\psi, H \varphi)=(H \psi,
\varphi).
|
[{'version': 'v1', 'created': 'Wed, 26 Feb 2014 18:43:59 GMT'}
{'version': 'v2', 'created': 'Mon, 3 Mar 2014 17:40:06 GMT'}
{'version': 'v3', 'created': 'Sun, 8 Jun 2014 05:57:16 GMT'}]
|
2015-06-18
|
[array(['Gorbatenko', 'M. V.', ''], dtype=object)
array(['Neznamov', 'V. P.', ''], dtype=object)]
|
1,385 |
cond-mat/0701317
|
Girish S. Setlur
|
Girish S. Setlur and V. Meera
|
A General Approach to Bosonization
|
Manuscript revised twice to incorporate referee concerns, 8 pages
| null |
10.1007/s12043-007-0162-x
| null |
cond-mat.str-el
| null |
We summarize recent developments in the field of higher dimensional
bosonization made by the authors and collaborators and propose a general
formula for the field operator in terms of currents and densities in one
dimension using a new ingredient known as a `singular complex number'.
Using this formalism, we compute the Green function of the homogeneous
electron gas in one spatial dimension with short-range interaction leading to
the Luttinger liquid and also with long-range interactions that leads to a
Wigner crystal whose momentum distribution computed recently exhibits essential
singularities.
We generalize the formalism to finite temperature by combining with the
author's hydrodynamic approach. The one-particle Green function of this system
with essential singularities cannot be easily computed using the traditional
approach to bosonization which involves the introduction of momentum cutoffs,
hence the more general approach of the present formalism is proposed as a
suitable alternative.
|
[{'version': 'v1', 'created': 'Mon, 15 Jan 2007 07:13:20 GMT'}]
|
2009-11-13
|
[array(['Setlur', 'Girish S.', ''], dtype=object)
array(['Meera', 'V.', ''], dtype=object)]
|
1,386 |
2106.14813
|
Feng Zhu
|
David Simchi-Levi, Zeyu Zheng, Feng Zhu
|
Offline Planning and Online Learning under Recovering Rewards
|
v1 accepted by ICML 2021
| null | null | null |
stat.ML cs.DM cs.LG math.OC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Motivated by emerging applications such as live-streaming e-commerce,
promotions and recommendations, we introduce and solve a general class of
non-stationary multi-armed bandit problems that have the following two
features: (i) the decision maker can pull and collect rewards from up to
$K\,(\ge 1)$ out of $N$ different arms in each time period; (ii) the expected
reward of an arm immediately drops after it is pulled, and then
non-parametrically recovers as the arm's idle time increases. With the
objective of maximizing the expected cumulative reward over $T$ time periods,
we design a class of ``Purely Periodic Policies'' that jointly set a period to
pull each arm. For the proposed policies, we prove performance guarantees for
both the offline problem and the online problems. For the offline problem when
all model parameters are known, the proposed periodic policy obtains an
approximation ratio that is at the order of $1-\mathcal O(1/\sqrt{K})$, which
is asymptotically optimal when $K$ grows to infinity. For the online problem
when the model parameters are unknown and need to be dynamically learned, we
integrate the offline periodic policy with the upper confidence bound procedure
to construct on online policy. The proposed online policy is proved to
approximately have $\widetilde{\mathcal O}(N\sqrt{T})$ regret against the
offline benchmark. Our framework and policy design may shed light on broader
offline planning and online learning applications with non-stationary and
recovering rewards.
|
[{'version': 'v1', 'created': 'Mon, 28 Jun 2021 15:40:07 GMT'}
{'version': 'v2', 'created': 'Tue, 21 Dec 2021 22:57:43 GMT'}]
|
2021-12-23
|
[array(['Simchi-Levi', 'David', ''], dtype=object)
array(['Zheng', 'Zeyu', ''], dtype=object)
array(['Zhu', 'Feng', ''], dtype=object)]
|
1,387 |
1702.08453
|
C. J. A. P. Martins
|
R. P. L. Azevedo and C. J. A. P. Martins
|
Cosmic strings and other topological defects in nonscaling regimes
|
10 pages, 5 figures
|
Phys. Rev. D 95 (2017) 043537
|
10.1103/PhysRevD.95.043537
| null |
astro-ph.CO gr-qc hep-ph hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Cosmic strings are topological defects possibly formed in the early Universe,
which may be observable due to their gravitational effects on the cosmic
microwave background radiation or gravitational wave experiments. To this
effect it is important to quantitatively ascertain the network properties,
including their density, velocity or the number of strings present, at the
various epochs in the observable Universe. Attempts to estimate these numbers
often rely on simplistic approximations for the string parameters, such as
assuming that the network is scaling. However, in cosmological models
containing realistic amounts of radiation, matter and dark energy a string
network is never exactly scaling. Here we use the velocity-dependent one-scale
model for the evolution of a string network to better quantify how these
networks evolve. In particular we obtain new approximate analytic solutions for
the behavior of the network during the radiation-to-matter and
matter-to-acceleration transitions (assuming, in the latter case, the canonical
$\Lambda$ cold dark matter model), and numerically calculate the relevant
quantities for a range of possible dark energy models.
|
[{'version': 'v1', 'created': 'Mon, 27 Feb 2017 15:51:17 GMT'}]
|
2017-03-01
|
[array(['Azevedo', 'R. P. L.', ''], dtype=object)
array(['Martins', 'C. J. A. P.', ''], dtype=object)]
|
1,388 |
0711.4430
|
Alexey Kovalev
|
Alexey A. Kovalev, Liviu P. Z\^arbo, Y. Tserkovnyak, G. E. W. Bauer,
and Jairo Sinova
|
Nanomechanical Spin-Polarizer
|
4 pages, 4 figures
|
Phys. Rev. Lett. 101, 036401 (2008)
|
10.1103/PhysRevLett.101.036401
| null |
cond-mat.mes-hall
| null |
Torsional oscillations of a free-standing semiconductor beam are shown to
cause spin-dependent oscillating potentials that spin-polarize an applied
charge current in the presence of intentional or disorder scattering
potentials. We propose several realizations of mechanical spin generators and
manipulators based on this piezo-spintronic effect.
|
[{'version': 'v1', 'created': 'Wed, 28 Nov 2007 06:27:19 GMT'}]
|
2008-07-29
|
[array(['Kovalev', 'Alexey A.', ''], dtype=object)
array(['Zârbo', 'Liviu P.', ''], dtype=object)
array(['Tserkovnyak', 'Y.', ''], dtype=object)
array(['Bauer', 'G. E. W.', ''], dtype=object)
array(['Sinova', 'Jairo', ''], dtype=object)]
|
1,389 |
1612.02381
|
Dongkwan Kim
|
Dongkwan Kim
|
Stability of Springer representations for type $A$
| null | null | null | null |
math.RT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We prove certain stability properties of Springer representations for type
$A$.
|
[{'version': 'v1', 'created': 'Wed, 7 Dec 2016 19:14:38 GMT'}]
|
2016-12-08
|
[array(['Kim', 'Dongkwan', ''], dtype=object)]
|
1,390 |
2209.08912
|
Hengne Li
|
Hengne Li and LHCb collaboration
|
Probing the valence quark region of nucleons with Z bosons at LHCb
|
4 pages, 19 figures, proceedings for the 20th International
Conference on Strangeness in Quark Matter (SQM2022)
| null | null | null |
hep-ex hep-ph
|
http://creativecommons.org/licenses/by/4.0/
|
In this high-$x$ region, both the flavour content and structure of the
nucleon parton distribution functions remains relatively poorly known. New LHCb
measurements of Z and charm jet associated production could indicate a
valence-like intrinsic-charm component in the proton wave function, and
measurements of Z production in pPb collisions provide new constraints on the
partonic structure of nucleons bound inside nuclei. Here we will discuss these
new LHCb measurements and comparisons with state-of-the-art parton distribution
function calculations.
|
[{'version': 'v1', 'created': 'Mon, 19 Sep 2022 10:47:24 GMT'}]
|
2022-09-20
|
[array(['Li', 'Hengne', ''], dtype=object)
array(['collaboration', 'LHCb', ''], dtype=object)]
|
1,391 |
1908.02324
|
Gregory Adkins
|
Gregory S. Adkins, Md Faisal Alam, Conor Larison and Ruosi Sun
|
Coulomb expectation values in $D=3$ and $D=3-2\epsilon$ dimensions
|
41 pages, 2 figures; v2 includes a sample calculation
|
Phys. Rev. A 101, 042511 (2020)
|
10.1103/PhysRevA.101.042511
| null |
quant-ph hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We explore the quantum Coulomb problem for two-body bound states, in $D=3$
and $D=3-2\epsilon$ dimensions, in detail, and give an extensive list of
expectation values that arise in the evaluation of QED corrections to bound
state energies. We describe the techniques used to obtain these expectation
values and give general formulas for the evaluation of integrals involving
associated Laguerre polynomials. In addition, we give formulas for the
evaluation of integrals involving subtracted associated Laguerre
polynomials--those with low powers of the variable subtracted off--that arise
when evaluating divergent expectation values. We present perturbative results
(in the parameter $\epsilon$) that show how bound state energies and wave
functions in $D=3-2\epsilon$ dimensions differ from their $D=3$ dimensional
counterparts and use these formulas to find regularized expressions for
divergent expectation values such as $\big \langle \bar V^3 \big \rangle$ and
$\big \langle (\bar V')^2 \big \rangle$ where $\bar V$ is the $D$-dimensional
Coulomb potential. We evaluate a number of finite $D$-dimensional expectation
values such as $\big \langle r^{-2+4\epsilon} \partial_r^2 \big \rangle$ and
$\big \langle r^{4\epsilon} p^4 \big \rangle$ that have $\epsilon \rightarrow
0$ limits that differ from their three-dimensional counterparts $\big \langle
r^{-2} \partial_r^2 \big \rangle$ and $\big \langle p^4 \big \rangle$. We
explore the use of recursion relations, the Feynman-Hellmann theorem, and
momentum space brackets combined with $D$-dimensional Fourier transformation
for the evaluation of $D$-dimensional expectation values. The results of this
paper are useful when using dimensional regularization in the calculation of
properties of Coulomb bound systems.
|
[{'version': 'v1', 'created': 'Tue, 6 Aug 2019 18:55:10 GMT'}
{'version': 'v2', 'created': 'Mon, 9 Dec 2019 17:51:17 GMT'}]
|
2020-05-06
|
[array(['Adkins', 'Gregory S.', ''], dtype=object)
array(['Alam', 'Md Faisal', ''], dtype=object)
array(['Larison', 'Conor', ''], dtype=object)
array(['Sun', 'Ruosi', ''], dtype=object)]
|
1,392 |
2303.06629
|
Xiuzhan Guo
|
Xiuzhan Guo, Arthur Berrill, Ajinkya Kulkarni, Kostya Belezko, Min Luo
|
Another Generic Setting for Entity Resolution: Basic Theory
| null | null | null | null |
cs.AI cs.DB cs.DM math.GR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Benjelloun et al. \cite{BGSWW} considered the Entity Resolution (ER) problem
as the generic process of matching and merging entity records judged to
represent the same real world object. They treated the functions for matching
and merging entity records as black-boxes and introduced four important
properties that enable efficient generic ER algorithms.
In this paper, we shall study the properties which match and merge functions
share, model matching and merging black-boxes for ER in a partial groupoid,
based on the properties that match and merge functions satisfy, and show that a
partial groupoid provides another generic setting for ER.
The natural partial order on a partial groupoid is defined when the partial
groupoid satisfies Idempotence and Catenary associativity. Given a partial
order on a partial groupoid, the least upper bound and compatibility ($LU_{pg}$
and $CP_{pg}$) properties are equivalent to Idempotence, Commutativity,
Associativity, and Representativity and the partial order must be the natural
one we defined when the domain of the partial operation is reflexive. The
partiality of a partial groupoid can be reduced using connected components and
clique covers of its domain graph, and a noncommutative partial groupoid can be
mapped to a commutative one homomorphically if it has the partial idempotent
semigroup like structures.
In a finitely generated partial groupoid $(P,D,\circ)$ without any conditions
required, the ER we concern is the full elements in $P$. If $(P,D,\circ)$
satisfies Idempotence and Catenary associativity, then the ER is the maximal
elements in $P$, which are full elements and form the ER defined in
\cite{BGSWW}. Furthermore, in the case, since there is a transitive binary
order, we consider ER as ``sorting, selecting, and querying the elements in a
finitely generated partial groupoid."
|
[{'version': 'v1', 'created': 'Sun, 12 Mar 2023 10:46:09 GMT'}]
|
2023-03-14
|
[array(['Guo', 'Xiuzhan', ''], dtype=object)
array(['Berrill', 'Arthur', ''], dtype=object)
array(['Kulkarni', 'Ajinkya', ''], dtype=object)
array(['Belezko', 'Kostya', ''], dtype=object)
array(['Luo', 'Min', ''], dtype=object)]
|
1,393 |
0905.3111
|
Tim Austin
|
Tim Austin (UCLA) and Mariusz Lemanczyk (Nicolaus Copernicus
University)
|
Relatively finite measure-preserving extensions and lifting multipliers
by Rokhlin cocycles
|
19 pages
| null |
10.1007/s11784-009-0119-4
| null |
math.DS
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We show that under some natural ergodicity assumptions extensions given by
Rokhlin cocycles lift the multiplier property if the associated locally compact
group extension has only countably many L^\infty-eigenvalues. We make use of
some analogs of basic results from the theory of finite-rank modules associated
to an extension of measure-preserving systems in the setting of a non-singular
base.
|
[{'version': 'v1', 'created': 'Tue, 19 May 2009 14:15:05 GMT'}
{'version': 'v2', 'created': 'Sun, 31 May 2009 20:51:06 GMT'}
{'version': 'v3', 'created': 'Thu, 20 Aug 2009 17:02:32 GMT'}
{'version': 'v4', 'created': 'Wed, 23 Sep 2009 17:24:13 GMT'}]
|
2009-09-23
|
[array(['Austin', 'Tim', '', 'UCLA'], dtype=object)
array(['Lemanczyk', 'Mariusz', '', 'Nicolaus Copernicus\n University'],
dtype=object) ]
|
1,394 |
1112.0171
|
Zbigniew Ficek
|
Li-hui Sun, Gao-xiang Li and Zbigniew Ficek
|
First-order coherence versus entanglement in a nano-mechanical cavity
|
Published version
|
Phys. Rev. A85, 022327 (2012)
|
10.1103/PhysRevA.85.022327
| null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The coherence and correlation properties of effective bosonic modes of a
nano-mechanical cavity composed of an oscillating mirror and containing an
optical lattice of regularly trapped atoms are studied. The system is modeled
as a three-mode system, two orthogonal polariton modes representing the coupled
optical lattice and the cavity mode, and one mechanical mode representing the
oscillating mirror. We examine separately the cases of two-mode and three-mode
interactions which are distinguished by a suitable tuning of the mechanical
mode to the polariton mode frequencies. In the two-mode case, we find that the
occurrence of entanglement between one of the polariton modes and the
mechanical mode is highly sensitive to the presence of the first-order
coherence between the modes. In particular, the creation of the first-order
coherence among the modes is achieved at the expense of entanglement between
the modes. In the three-mode case, we show that no entanglement is created
between the independent polariton modes if both modes are coupled to the
mechanical mode by the parametric interaction. There is no entanglement between
the polaritons even if the oscillating mirror is damped by a squeezed vacuum
field. The interaction creates the first-order coherence between the polaritons
and the degree of coherence can, in principle, be as large as unity. This
demonstrates that the oscillating mirror can establish the first-order
coherence between two independent thermal modes. A further analysis shows that
two independent thermal modes can be made entangled in the system only when one
of the modes is coupled to the intermediate mode by a parametric interaction
and the other is coupled by a linear-mixing interaction.
|
[{'version': 'v1', 'created': 'Thu, 1 Dec 2011 13:20:14 GMT'}
{'version': 'v2', 'created': 'Wed, 22 Feb 2012 06:23:27 GMT'}]
|
2013-05-30
|
[array(['Sun', 'Li-hui', ''], dtype=object)
array(['Li', 'Gao-xiang', ''], dtype=object)
array(['Ficek', 'Zbigniew', ''], dtype=object)]
|
1,395 |
2109.11783
|
Pablo Villegas G\'ongora
|
Victor Buend\'ia, Pablo Villegas, Raffaella Burioni, Miguel A. Mu\~noz
|
The broad edge of synchronisation: Griffiths effects and collective
phenomena in brain networks
|
13 pages, 2 figures. Accepted to be published in Philos. Trans. Royal
Soc. A
|
Phil. Trans. R. Soc. A.380: 20200424 (2022)
|
10.1098/rsta.2020.0424
| null |
q-bio.NC cond-mat.dis-nn nlin.AO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Many of the amazing functional capabilities of the brain are collective
properties stemming from the interactions of large sets of individual neurons.
In particular, the most salient collective phenomena in brain activity are
oscillations, which require the synchronous activation of many neurons. Here,
we analyse parsimonious dynamical models of neural synchronisation running on
top of synthetic networks that capture essential aspects of the actual brain
anatomical connectivity such as a hierarchical-modular and core-periphery
structure. These models reveal the emergence of complex collective states with
intermediate and flexible levels of synchronisation, halfway in the
synchronous-asynchronous spectrum. These states are best described as broad
Griffiths-like phases, i.e. an extension of standard critical points that
emerge in structurally heterogeneous systems. We analyse different routes
(bifurcations) to synchronisation and stress the relevance of 'hybrid-type
transitions' to generate rich dynamical patterns. Overall, our results
illustrate the complex interplay between structure and dynamics, underlining
key aspects leading to rich collective states needed to sustain brain
functionality.
|
[{'version': 'v1', 'created': 'Fri, 24 Sep 2021 07:24:14 GMT'}]
|
2022-06-29
|
[array(['Buendía', 'Victor', ''], dtype=object)
array(['Villegas', 'Pablo', ''], dtype=object)
array(['Burioni', 'Raffaella', ''], dtype=object)
array(['Muñoz', 'Miguel A.', ''], dtype=object)]
|
1,396 |
1708.03060
|
Daniel Corey
|
Daniel Corey
|
Initial degenerations of Grassmannians
|
43 pages, 3 TikZ figures
| null | null | null |
math.AG
|
http://creativecommons.org/licenses/by/4.0/
|
We construct closed immersions from initial degenerations of
$\operatorname*{Gr}_{0}(d,n)$---the open cell in the Grassmannian
$\operatorname*{Gr}(d,n)$ given by the nonvanishing of all Pl\"ucker
coordinates---to limits of thin Schubert cells associated to diagrams induced
by the face poset of the corresponding tropical linear space. These are
isomorphisms when $(d,n)$ equals $(2,n)$, $(3,6)$ and $(3,7)$. As an
application we prove $\operatorname*{Gr}_0(3,7)$ is sch\"on, and the Chow
quotient of $\operatorname*{Gr}(3,7)$ by the maximal torus in $
\operatorname*{PGL}(7)$ is the log canonical compactification of the moduli
space of 7 points in $\mathbb{P}^2$ in linear general position, making progress
on a conjecture of Hacking, Keel, and Tevelev.
|
[{'version': 'v1', 'created': 'Thu, 10 Aug 2017 03:03:30 GMT'}
{'version': 'v2', 'created': 'Fri, 24 Apr 2020 03:17:26 GMT'}]
|
2020-04-27
|
[array(['Corey', 'Daniel', ''], dtype=object)]
|
1,397 |
2106.06544
|
Guido Roberts-Borsani
|
Guido Roberts-Borsani, Takahiro Morishita, Tommaso Treu, Nicha
Leethochawalit and Michele Trenti
|
The Physical Properties of Luminous $z\gtrsim8$ Galaxies and
Implications for the Cosmic Star Formation Rate Density From $\sim$0.35
deg$^{2}$ of (Pure-)Parallel HST Observations
|
33 pages, 15 figures, 8 tables. Accepted for publication in ApJ (in
press). New version reflects important modifications to the derived sample
made after discussions with the referee
| null |
10.3847/1538-4357/ac4803
| null |
astro-ph.GA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present the largest systematic, HST-based search to date for luminous
$z\gtrsim8$ galaxy candidates using $\sim$1267 arcmin$^{2}$ of (pure-)parallel
observations from a compilation of 288 random sightlines with ACS and WFC3
observations, derived from the SuperBoRG data set and together representing a
factor $\sim1.12\times$ larger than existing space-based data sets. Using NIR
color cuts and careful photo-$z$ analyses, we find 31 $z\gtrsim8$ galaxy
candidates over 29 unique sightlines, and derive global galaxy properties such
as UV magnitudes and continuum slopes, sizes, and rest-frame optical properties
(e.g., SFRs, stellar masses, $A_{\rm v}$). Taking advantage of the
(pure-)parallel nature of our data set - making it one of the most
representative thus far - and derived SFRs, we evaluate the cosmic star
formation rate density for the bright end of the UV luminosity function at
$z\sim8-10$ and test the validity of luminosity function-derived results using
a conversion factor. We find our method yields comparable results to those
derived with luminosity functions. Furthermore, we present follow up
observations of 5 (Super)BoRG targets with Keck/MOSFIRE, finding no evidence of
Ly$\alpha$ in $>3$ hrs of $Y-$band observations in either, consistent with a
largely neutral medium at $z\sim8$. Our results offer a definitive HST legacy
on the bright end of the luminosity function and provide a valuable benchmark
as well as targets for follow up with JWST.
|
[{'version': 'v1', 'created': 'Fri, 11 Jun 2021 18:00:00 GMT'}
{'version': 'v2', 'created': 'Fri, 17 Dec 2021 19:13:23 GMT'}]
|
2022-03-30
|
[array(['Roberts-Borsani', 'Guido', ''], dtype=object)
array(['Morishita', 'Takahiro', ''], dtype=object)
array(['Treu', 'Tommaso', ''], dtype=object)
array(['Leethochawalit', 'Nicha', ''], dtype=object)
array(['Trenti', 'Michele', ''], dtype=object)]
|
1,398 |
2206.08625
|
Joel Hirst
|
Joel Hirst, Unai Atxitia, Sergiu Ruta, Jerome Jackson, Leon Petit and
Thomas Ostler
|
Multiscale Modelling of the Antiferromagnet Mn2Au: From ab-initio to
Micromagnetics
|
14 pages, 12 figures
| null | null | null |
cond-mat.mtrl-sci
|
http://creativecommons.org/licenses/by/4.0/
|
Antiferromagnets (AFMs) are strong candidates for the future spintronic and
memory applications largely because of their inherently fast dynamics and lack
of stray fields, with Mn2Au being one of the most promising. For the numerical
modelling of magnetic material properties, it is common to use ab-initio
methods, atomistic models and micromagnetics. However, each method alone
describes the physics within certain limits. Multiscale methods bridging the
gap between these three approaches have been already proposed for ferromagnetic
materials. Here, we present a complete multiscale model of the AFM Mn2Au as an
exemplar material, starting with results from ab-initio methods going via
atomistic spin dynamics (ASD) to an AFM Landau-Lifshitz-Bloch (AFM-LLB) model.
Firstly, bulk is modelled using a classical spin Hamiltonian constructed based
on earlier first-principles calculations. Secondly, this spin model is used in
the stochastic Landau-Lifshitz-Gilbert (LLG) to calculate temperature-dependent
equilibrium properties, such as magnetization and magnetic susceptibilities.
Thirdly, the temperature dependent micromagnetic parameters are used in the
AFM-LLB. We validate our approach by comparing the ASD and AFM-LLB models for
three paradigmatic cases; (i) Damped magnetic oscillations, (ii) magnetization
dynamics following a heat pulse resembling pump-probe experiments, (iii)
magnetic domain wall motion under thermal gradients.
|
[{'version': 'v1', 'created': 'Fri, 17 Jun 2022 08:38:37 GMT'}]
|
2022-06-20
|
[array(['Hirst', 'Joel', ''], dtype=object)
array(['Atxitia', 'Unai', ''], dtype=object)
array(['Ruta', 'Sergiu', ''], dtype=object)
array(['Jackson', 'Jerome', ''], dtype=object)
array(['Petit', 'Leon', ''], dtype=object)
array(['Ostler', 'Thomas', ''], dtype=object)]
|
1,399 |
1411.7732
|
Fenglong You
|
Fenglong You
|
Seidel elements and mirror transformations for toric stacks
|
24 pages
| null | null | null |
math.AG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We give a precise relation between the mirror transformation and the Seidel
elements for weak Fano toric Deligne-Mumford stacks. Our result generalizes the
corresponding result for toric varieties proved by Gonz\'alez and Iritani in
\cite{GI}.
|
[{'version': 'v1', 'created': 'Fri, 28 Nov 2014 01:28:51 GMT'}]
|
2014-12-01
|
[array(['You', 'Fenglong', ''], dtype=object)]
|
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