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44.4k
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
16,900 |
1706.05247
|
Manon Nys
|
Laura Abatangelo, Veronica Felli, Benedetta Noris, Manon Nys
|
Estimates for eigenvalues of Aharonov-Bohm operators with varying poles
and non-half-interger circulation
|
35 pages
|
Analysis & PDE 11 (2018) 1741-1785
|
10.2140/apde.2018.11.1741
| null |
math.AP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study the behavior of eigenvalues of a magnetic Aharonov-Bohm operator
with non-half-integer circulation and Dirichlet boundary conditions in a planar
domain. As the pole is moving in the interior of the domain, we estimate the
rate of the eigenvalue variation in terms of the vanishing order of the limit
eigenfunction at the limit pole. We also provide an accurate blow-up analysis
for scaled eigenfunctions and prove a sharp estimate for their rate of
convergence.
|
[{'version': 'v1', 'created': 'Fri, 16 Jun 2017 12:36:12 GMT'}]
|
2018-06-06
|
[array(['Abatangelo', 'Laura', ''], dtype=object)
array(['Felli', 'Veronica', ''], dtype=object)
array(['Noris', 'Benedetta', ''], dtype=object)
array(['Nys', 'Manon', ''], dtype=object)]
|
16,901 |
cond-mat/0605296
|
Davide Marenduzzo
|
A. Dupuis, D. Marenduzzo, E. Orlandini, J.M. Yeomans
|
Rheology of cholesteric blue phases
|
4 pages, 4 figures
|
Phys. Rev. Lett. 95, 097801 (2005)
|
10.1103/PhysRevLett.95.097801
| null |
cond-mat.soft
| null |
Blue phases of cholesteric liquid crystals offer a spectacular example of
naturally occurring disclination line networks. Here we numerically solve the
hydrodynamic equations of motion to investigate the response of three types of
blue phases to an imposed Poiseuille flow. We show that shear forces bend and
twist and can unzip the disclination lines. Under gentle forcing the network
opposes the flow and the apparent viscosity is significantly higher than that
of an isotropic liquid. With increased forcing we find strong shear thinning
corresponding to the disruption of the defect network. As the viscosity starts
to drop, the imposed flow sets the network into motion. Disclinations break-up
and re-form with their neighbours in the flow direction. This gives rise to
oscillations in the time-dependent measurement of the average stress.
|
[{'version': 'v1', 'created': 'Thu, 11 May 2006 10:41:02 GMT'}]
|
2009-11-11
|
[array(['Dupuis', 'A.', ''], dtype=object)
array(['Marenduzzo', 'D.', ''], dtype=object)
array(['Orlandini', 'E.', ''], dtype=object)
array(['Yeomans', 'J. M.', ''], dtype=object)]
|
16,902 |
2004.00868
|
Sergey Erokhin
|
Sergey Erokhin and Dmitry Berkov
|
Mechanical orientation of fine magnetic particles in powders by an
external magnetic field: simulation-based optimization
| null | null |
10.1002/pssb.202000404
| null |
cond-mat.mtrl-sci
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present a numerical algorithm for predicting the optimal conditions for
the effective alignment of magnetic particles in dense powders during the
compactization process using an externally applied field. This task is
especially important for the permanent magnets development due to the fact that
alignment of anisotropy axes of nanocomposite grains increases both remanence
and coercivity of magnetic materials. In contrast to previously known methods
where magnetic moment of each particle was assumed to be 'fixed' with respect
to the particle itself, our approach takes into account the (field-dependent)
deviation of this moment from the particle anisotropy axis that occurs even for
magnetically 'hard' particles possessing a strong mechanical contact. We show,
that this deviation leads to the existence of the optimal value of the applied
field for which the particle orientation (or alignment) time is minimal. The
influence of the external pressure and internal mechanical friction on the
details of the compactization/orientation process is also studied.
|
[{'version': 'v1', 'created': 'Thu, 2 Apr 2020 08:29:33 GMT'}]
|
2021-02-03
|
[array(['Erokhin', 'Sergey', ''], dtype=object)
array(['Berkov', 'Dmitry', ''], dtype=object)]
|
16,903 |
1712.04941
|
Joshua Eby
|
Joshua Eby, Peter Suranyi, and L.C.R. Wijewardhana
|
Expansion in Higher Harmonics of Boson Stars using a Generalized
Ruffini-Bonazzola Approach, Part 1: Bound States
|
24 pages, 3 figures. v2: References added, typos corrected
|
JCAP 1804 (2018) no.04, 038
|
10.1088/1475-7516/2018/04/038
| null |
hep-ph astro-ph.CO hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The method pioneered by Ruffini and Bonazzola (RB) to describe boson stars
involves an expansion of the boson field which is linear in creation and
annihilation operators. In the nonrelativistic limit, the equation of motion of
RB is equivalent to the nonlinear Schr\"odinger equation. Further, the RB
expansion constitutes an exact solution to a non-interacting field theory, and
has been used as a reasonable ansatz for an interacting one. In this work, we
show how one can go beyond the RB ansatz towards an exact solution of the
interacting operator Klein-Gordon equation, which can be solved iteratively to
ever higher precision. Our Generalized Ruffini-Bonazzola approach takes into
account contributions from nontrivial harmonic dependence of the wavefunction,
using a sum of terms with energy $k\,E_0$, where $k\geq1$ and $E_0$ is the
chemical potential of a single bound axion. The method critically depends on an
expansion in a parameter $\Delta \equiv \sqrt{1 - E_0{}^2/m^2} < 1$, where $m$
is the mass of the boson. In the case of the axion potential, we calculate
corrections which are relevant for axion stars in the transition or dense
branches of solutions. We find with high precision the local minimum of the
mass, $M_{min}\approx 463\,f^2/m$, at $\Delta\approx0.27$, where $f$ is the
axion decay constant. This point marks the crossover from the transition branch
to the dense branch of solutions, and a corresponding crossover from structural
instability to stability.
|
[{'version': 'v1', 'created': 'Wed, 13 Dec 2017 19:00:01 GMT'}
{'version': 'v2', 'created': 'Sun, 29 Apr 2018 13:36:32 GMT'}]
|
2018-05-01
|
[array(['Eby', 'Joshua', ''], dtype=object)
array(['Suranyi', 'Peter', ''], dtype=object)
array(['Wijewardhana', 'L. C. R.', ''], dtype=object)]
|
16,904 |
1808.08188
|
We-Fu Chang
|
We-Fu Chang and John N. Ng
|
Alternative Perspective on Gauged Lepton Number and Implications for
Collider Physics
|
13 pages, 1 figure. Matches published version
|
Phys. Rev. D 99, 075025 (2019)
|
10.1103/PhysRevD.99.075025
| null |
hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A new anomaly-free gauged $U(1)_\ell$ lepton-number model is studied. Two
standard model lepton generations acquire the same but oppositive sign
$U(1)_\ell$ charges, while four exotic chiral leptons cancel the anomalies of
the remaining lepton family. We discuss a simplified case which has the
universal Yukawa couplings. It agrees with all the experimental constraints and
predicts $m_e, m_\mu \ll m_\tau$, and the latter is of the electroweak scale.
Due to the interference between the SM and $U(1)_\ell$ gauge interactions, this
model robustly predicts that $e,\mu,\tau$ have distinctive forward-backward
asymmetries at the $e^+e^-$ colliders. It can be searched for at the $e^+e^-$
machine with $\sim$ TeV center-of-mass energy and an integrated luminosity
$\sim ab^{-1}$.
|
[{'version': 'v1', 'created': 'Fri, 24 Aug 2018 16:00:03 GMT'}
{'version': 'v2', 'created': 'Thu, 25 Apr 2019 13:13:01 GMT'}]
|
2019-05-01
|
[array(['Chang', 'We-Fu', ''], dtype=object)
array(['Ng', 'John N.', ''], dtype=object)]
|
16,905 |
1608.00965
|
David Blaschke
|
P. Batyuk, D. Blaschke, M. Bleicher, Yu. B. Ivanov, Iu. Karpenko, S.
Merts, M. Nahrgang, H. Petersen, O. Rogachevsky
|
Event simulation based on three-fluid hydrodynamics for collisions at
energies available at the Dubna Nuclotron-based Ion Collider Facility and at
the Facility for Antiproton and Ion Research in Darmstadt
|
18 pages, 16 figures, version accepted for publication in Phys. Rev.
C, before proof corrections
|
Phys. Rev. C 94, 044917 (2016)
|
10.1103/PhysRevC.94.044917
| null |
nucl-th hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present a new event generator based on the three-fluid hydrodynamics
approach for the early stage of the collision, followed by a particlization at
the hydrodynamic decoupling surface to join to a microscopic transport model,
UrQMD, to account for hadronic final state interactions. We present first
results for nuclear collisions of the FAIR/NICA energy scan program (Au+Au
collisions, $\sqrt{s_{NN}}=4-11$ GeV). We address the directed flow of protons
and pions as well as the proton rapidity distribution for two model EoS, one
with a first order phase transition the other with a crossover type softening
at high densities. The new simulation program has the unique feature that it
can describe a hadron-to-quark matter transition which proceeds in the baryon
stopping regime that is not accessible to previous simulation programs designed
for higher energies.
|
[{'version': 'v1', 'created': 'Tue, 2 Aug 2016 19:58:01 GMT'}
{'version': 'v2', 'created': 'Fri, 26 Aug 2016 19:57:33 GMT'}
{'version': 'v3', 'created': 'Mon, 26 Dec 2016 08:54:27 GMT'}]
|
2016-12-28
|
[array(['Batyuk', 'P.', ''], dtype=object)
array(['Blaschke', 'D.', ''], dtype=object)
array(['Bleicher', 'M.', ''], dtype=object)
array(['Ivanov', 'Yu. B.', ''], dtype=object)
array(['Karpenko', 'Iu.', ''], dtype=object)
array(['Merts', 'S.', ''], dtype=object)
array(['Nahrgang', 'M.', ''], dtype=object)
array(['Petersen', 'H.', ''], dtype=object)
array(['Rogachevsky', 'O.', ''], dtype=object)]
|
16,906 |
quant-ph/0407259
|
Pieter Kok
|
Pieter Kok and Samuel L. Braunstein
|
Relativistic quantum communication with bosonic and fermionic
interferometers
|
7 pages, no figures
|
Int.J.Quant.Inf. 4 (2006) 119
| null | null |
quant-ph gr-qc hep-th
| null |
We derive the relativistic transformation laws for the annihilation operators
of the scalar field, the massive spin-1 vector field, the electromagnetic field
and the spinor field. The technique developed here involves straightforward
mathematical techniques based on fundamental quantum field theory, and is
applicable to the study of entanglement in arbitrary coordinate
transformations. In particular, it predicts particle creation for non-inertial
motion. Furthermore, we present a unified description of relativistic
transformations and multi-particle interferometry with bosons and fermions,
which encompasses linear optical quantum computing.
|
[{'version': 'v1', 'created': 'Fri, 30 Jul 2004 12:49:29 GMT'}
{'version': 'v2', 'created': 'Fri, 20 May 2005 11:03:55 GMT'}]
|
2007-05-23
|
[array(['Kok', 'Pieter', ''], dtype=object)
array(['Braunstein', 'Samuel L.', ''], dtype=object)]
|
16,907 |
math/0510507
|
Vyacheslav Krushkal
|
Vyacheslav Krushkal
|
Link groups of 4-manifolds
|
34 pages, 7 figures. v.3: minor phrasing changes
|
Proceedings of the Freedman Fest, 199-234, Geom. Topol. Monogr.,
18, Coventry, 2012
|
10.2140/gtm.2012.18.199
| null |
math.GT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The notion of a Bing cell is introduced, and it is used to define invariants,
link groups, of 4-manifolds. Bing cells combine some features of both surfaces
and 4-dimensional handlebodies, and the link group \lambda(M) measures certain
aspects of the handle structure of a 4-manifold M. This group is a quotient of
the fundamental group, and examples of manifolds are given with \pi_1(M) not
equal to \lambda(M). The main construction of the paper is a generalization of
the Milnor group, which is used to formulate an obstruction to embeddability of
Bing cells into 4-space. Applications to the A-B slice problem and to the
structure of topological arbiters are discussed.
|
[{'version': 'v1', 'created': 'Mon, 24 Oct 2005 17:33:01 GMT'}
{'version': 'v2', 'created': 'Sat, 1 Oct 2011 18:05:20 GMT'}
{'version': 'v3', 'created': 'Tue, 21 Feb 2012 22:50:30 GMT'}]
|
2014-09-30
|
[array(['Krushkal', 'Vyacheslav', ''], dtype=object)]
|
16,908 |
2210.15135
|
William Hartmann
|
Chak-Fai Li, Francis Keith, William Hartmann, Matthew Snover
|
Training Autoregressive Speech Recognition Models with Limited in-domain
Supervision
|
Submitted to IEEE ICASSP 2023
| null | null | null |
cs.CL cs.SD eess.AS
|
http://creativecommons.org/licenses/by/4.0/
|
Advances in self-supervised learning have significantly reduced the amount of
transcribed audio required for training. However, the majority of work in this
area is focused on read speech. We explore limited supervision in the domain of
conversational speech. While we assume the amount of in-domain data is limited,
we augment the model with open source read speech data. The XLS-R model has
been shown to perform well with limited adaptation data and serves as a strong
baseline. We use untranscribed data for self-supervised learning and
semi-supervised training in an autoregressive encoder-decoder model. We
demonstrate that by using the XLS-R model for pseudotranscription, a much
smaller autoregressive model can outperform a finetuned XLS-R model when
transcribed in-domain data is limited, reducing WER by as much as 8% absolute.
|
[{'version': 'v1', 'created': 'Thu, 27 Oct 2022 02:49:23 GMT'}]
|
2022-10-28
|
[array(['Li', 'Chak-Fai', ''], dtype=object)
array(['Keith', 'Francis', ''], dtype=object)
array(['Hartmann', 'William', ''], dtype=object)
array(['Snover', 'Matthew', ''], dtype=object)]
|
16,909 |
hep-ph/0206103
|
Zhi-Qiang Shi
|
Guang-jiong Ni
|
A New Interpretation on Quantum Mechanics
|
8 pages, revtex4
| null | null | null |
hep-ph
| null |
Based on new experiments about the "macroscopic Schrodinger's cat state"
etc., a self-consistent interpretation on quantum mechanics is presented from
the new point of view combining physics, philosophy and mathematics together.
|
[{'version': 'v1', 'created': 'Wed, 12 Jun 2002 07:58:31 GMT'}
{'version': 'v2', 'created': 'Wed, 31 Jul 2002 14:20:47 GMT'}]
|
2007-05-23
|
[array(['Ni', 'Guang-jiong', ''], dtype=object)]
|
16,910 |
hep-ph/9607399
|
Krzysztof Golec-Biernat
|
K.Golec-Biernat and J.Kwiecinski
|
Subleading Reggeons in Deep Inelastic Diffractive Scattering at HERA
|
6 pages, LaTEX, 1 eps figure
|
Phys.Rev.D55:3209-3211,1997
|
10.1103/PhysRevD.55.3209
|
INP-1734/PH
|
hep-ph
| null |
The contribution of subleading reggeons to the diffractive structure function
${dF_{2}^D / dx_{\funp} dt}$ is estimated from the soft physics data. This
contribution leads in a natural way to the violation of the factorization
property of the diffractive structure function.
|
[{'version': 'v1', 'created': 'Tue, 23 Jul 1996 13:13:35 GMT'}]
|
2008-11-26
|
[array(['Golec-Biernat', 'K.', ''], dtype=object)
array(['Kwiecinski', 'J.', ''], dtype=object)]
|
16,911 |
1403.6196
|
Kenichi Maruno
|
Bao-Feng Feng, Jun-ichi Inoguchi, Kenji Kajiwara, Ken-ichi Maruno and
Yasuhiro Ohta
|
Integrable discretizations of the Dym equation
| null |
Frontier of Mathematics in China, Volume 8, Issue 5, 2013, special
issue: Recent Development in Symmetries and Integrability of Difference
Equations
| null | null |
nlin.SI math-ph math.MP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Integrable discretizations of the complex and real Dym equations are
proposed. N-soliton solutions for both semi-discrete and fully discrete
analogues of the complex and real Dym equations are also presented.
|
[{'version': 'v1', 'created': 'Mon, 24 Mar 2014 23:48:52 GMT'}]
|
2014-03-26
|
[array(['Feng', 'Bao-Feng', ''], dtype=object)
array(['Inoguchi', 'Jun-ichi', ''], dtype=object)
array(['Kajiwara', 'Kenji', ''], dtype=object)
array(['Maruno', 'Ken-ichi', ''], dtype=object)
array(['Ohta', 'Yasuhiro', ''], dtype=object)]
|
16,912 |
1503.04726
|
Bayram Tekin
|
Emel Altas, Bayram Tekin
|
On Exact Solutions and the Consistency of 3D Minimal Massive Gravity
|
8 pages
|
Phys. Rev. D 92, 025033 (2015)
|
10.1103/PhysRevD.92.025033
| null |
hep-th gr-qc
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We show that all algebraic Type-O, Type-N and Type-D and some Kundt-Type
solutions of Topologically Massive Gravity are inherited by its holographically
well-defined deformation, that is the recently found Minimal Massive Gravity.
This construction provides a large class of constant scalar curvature solutions
to the theory. We also study the consistency of the field equations both in the
source-free and matter-coupled cases. Since the field equations of MMG do not
come from a Lagrangian that depends on the metric and its derivatives only, it
lacks the Bianchi identity valid for all non-singular metrics. But it turns out
that for the solutions of the equations, Bianchi identity is satisfied. This is
a necessary condition for the consistency of the classical field equations but
not a sufficient one, since the the rank-two tensor equations are susceptible
to double-divergence. We show that for the source-free case the
double-divergence of the field equations vanish for the solutions. In the
matter-coupled case, we show that the double-divergence of the left-hand side
and the right-hand side are equal to each other for the solutions of the
theory. This construction completes the proof of the the consistency of the
field equations.
|
[{'version': 'v1', 'created': 'Mon, 16 Mar 2015 16:55:55 GMT'}]
|
2015-07-29
|
[array(['Altas', 'Emel', ''], dtype=object)
array(['Tekin', 'Bayram', ''], dtype=object)]
|
16,913 |
0707.0571
|
Alexander Olshanskiy
|
A.Yu.Olshanskii
|
Linear automorphism groups of relatively free groups
|
4 pages
| null | null | null |
math.GR math.RT
| null |
Let G be a free group in a variety of groups, but G is not absolutely free.
We prove that the group of automorphisms Aut(G) is linear iff G is a virtually
nilpotent group.
|
[{'version': 'v1', 'created': 'Wed, 4 Jul 2007 10:42:07 GMT'}]
|
2007-07-05
|
[array(['Olshanskii', 'A. Yu.', ''], dtype=object)]
|
16,914 |
physics/0302061
|
Claus O. Wilke
|
Claus O Wilke (Caltech), Richard E Lenski (Michigan State University),
Christoph Adami (Caltech)
|
Compensatory mutations cause excess of antagonistic epistasis in RNA
secondary structure folding
|
14 pages pdf
|
BMC Evolutionary Biology 3:3 (2003)
| null | null |
physics.bio-ph cond-mat.soft nlin.AO q-bio.PE
| null |
Background: The rate at which fitness declines as an organism's genome
accumulates random mutations is an important variable in several evolutionary
theories. At an intuitive level, it might seem natural that random mutations
should tend to interact synergistically, such that the rate of mean fitness
decline accelerates as the number of random mutations is increased. However, in
a number of recent studies, a prevalence of antagonistic epistasis (the
tendency of multiple mutations to have a mitigating rather than reinforcing
effect) has been observed.
Results: We studied in silico the net amount and form of epistatic
interactions in RNA secondary structure folding by measuring the fraction of
neutral mutants as a function of mutational distance d. We found a clear
prevalence of antagonistic epistasis in RNA secondary structure folding. By
relating the fraction of neutral mutants at distance d to the average
neutrality at distance d, we showed that this prevalence derives from the
existence of many compensatory mutations at larger mutational distances.
Conclusions: Our findings imply that the average direction of epistasis in
simple fitness landscapes is directly related to the density with which fitness
peaks are distributed in these landscapes.
|
[{'version': 'v1', 'created': 'Tue, 18 Feb 2003 19:40:33 GMT'}]
|
2007-05-23
|
[array(['Wilke', 'Claus O', '', 'Caltech'], dtype=object)
array(['Lenski', 'Richard E', '', 'Michigan State University'],
dtype=object)
array(['Adami', 'Christoph', '', 'Caltech'], dtype=object)]
|
16,915 |
2303.16212
|
Songling Zhu
|
Ronghua Shang, Songling Zhu, Licheng Jiao, Songhua Xu
|
An EMO Joint Pruning with Multiple Sub-networks: Fast and Effect
| null | null | null | null |
cs.LG cs.AI
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The network pruning algorithm based on evolutionary multi-objective (EMO) can
balance the pruning rate and performance of the network. However, its
population-based nature often suffers from the complex pruning optimization
space and the highly resource-consuming pruning structure verification process,
which limits its application. To this end, this paper proposes an EMO joint
pruning with multiple sub-networks (EMO-PMS) to reduce space complexity and
resource consumption. First, a divide-and-conquer EMO network pruning framework
is proposed, which decomposes the complex EMO pruning task on the whole network
into easier sub-tasks on multiple sub-networks. On the one hand, this
decomposition reduces the pruning optimization space and decreases the
optimization difficulty; on the other hand, the smaller network structure
converges faster, so the computational resource consumption of the proposed
algorithm is lower. Secondly, a sub-network training method based on
cross-network constraints is designed so that the sub-network can process the
features generated by the previous one through feature constraints. This method
allows sub-networks optimized independently to collaborate better and improves
the overall performance of the pruned network. Finally, a multiple sub-networks
joint pruning method based on EMO is proposed. For one thing, it can accurately
measure the feature processing capability of the sub-networks with the
pre-trained feature selector. For another, it can combine multi-objective
pruning results on multiple sub-networks through global performance impairment
ranking to design a joint pruning scheme. The proposed algorithm is validated
on three datasets with different challenging. Compared with fifteen advanced
pruning algorithms, the experiment results exhibit the effectiveness and
efficiency of the proposed algorithm.
|
[{'version': 'v1', 'created': 'Tue, 28 Mar 2023 12:05:15 GMT'}]
|
2023-03-30
|
[array(['Shang', 'Ronghua', ''], dtype=object)
array(['Zhu', 'Songling', ''], dtype=object)
array(['Jiao', 'Licheng', ''], dtype=object)
array(['Xu', 'Songhua', ''], dtype=object)]
|
16,916 |
2105.11635
|
Pawan Tyagi Dr.
|
Bishnu Dahal, Marzieh Savadkoohi, Eva Mutunga, Rodneycia Taylor,
Andrew Grizzle, Christopher DAngelo, and Pawan Tyagi
|
Study of Anisotropy on Ferromagnetic Electrodes of a Magnetic Tunnel
Junction (MTJ)-Based Molecular Spintronics Device (MTJMSD)
|
5 Pages, four figures
| null | null | null |
cond-mat.mtrl-sci
|
http://creativecommons.org/licenses/by/4.0/
|
Magnetic tunnel junction-based molecular spintronics devices (MTJMSDs) are
designed by covalently connecting the paramagnetic molecules across two
ferromagnets (FM) electrodes of a magnetic tunnel junction (MTJ). MTJMSD
provides opportunities to connect FM electrodes of a vast range of anisotropy
properties to a variety of molecules of length scale. Our prior studies showed
that the paramagnetic molecules can produce strong antiferromagnetic coupling
with FM electrodes. The device properties of MTJMSD depend upon various factors
such as anisotropy, spin fluctuation, thermal energy, etc. In this paper, we
report a theoretical Monte Carlo Simulation (MCS) study to explain the impact
of anisotropy on the MTJMSD equilibrium properties. We studied the energy
variation of the MTJMSD system with time as a function of FM electrode
anisotropy. Experimentally designed FM electrodes of MTJMSD contain
multi-layers of different ferromagnetic materials. These materials possess
in-plane and out-of-plane magnetic anisotropy characteristics. To understand
the competing effect of in-plane and out-of-plane anisotropy, we have
computationally applied anisotropies on the left FM electrode. For the MCS
study, the orientation of the device was kept along YZ plane. As a result, the
applied anisotropy along the X-direction (\mathbit{A}_{\mathbit{Lx}}) and
Y-direction (\mathbit{A}_{\mathbit{Ly}}) represent out-of-plane and in-plane
anisotropy, respectively. We found that increasing anisotropy strength starts
exhibiting diverse domain structures within an FM electrode. Increasing the
magnitude of anisotropy was found to create stripe-shaped domains with opposite
spins. These domains represent the different magnetic phases. However, the
application of equal magnitude of in-plane and out-of-plane cancels the strip
domain formation and lowers the magnetic moment of overall MTJMSD.
|
[{'version': 'v1', 'created': 'Tue, 25 May 2021 03:23:12 GMT'}]
|
2021-05-26
|
[array(['Dahal', 'Bishnu', ''], dtype=object)
array(['Savadkoohi', 'Marzieh', ''], dtype=object)
array(['Mutunga', 'Eva', ''], dtype=object)
array(['Taylor', 'Rodneycia', ''], dtype=object)
array(['Grizzle', 'Andrew', ''], dtype=object)
array(['DAngelo', 'Christopher', ''], dtype=object)
array(['Tyagi', 'Pawan', ''], dtype=object)]
|
16,917 |
1902.00059
|
Hedda Gressel
|
Hedda A. Gressel, Camille Bonvin, Marco Bruni, David Bacon
|
Full-sky weak lensing: a nonlinear post-Friedmann treatment
|
59 pages
|
JCAP05(2019)045
|
10.1088/1475-7516/2019/05/045
| null |
astro-ph.CO gr-qc
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present a full-sky derivation of weak lensing observables in the
Post-Friedmann (PF) formalism. Weak lensing has the characteristic of mixing
small scales and large scales since it is affected by inhomogeneities
integrated along the photon trajectory. With the PF formalism, we develop a
modelling of lensing observables which encompasses both leading order
relativistic effects and effects that are due to the fully non-linear matter
distribution at small scales. We derive the reduced shear, convergence and
rotation up to order $1/c^4$ in the PF approximation, accounting for scalar,
vector and tensor perturbations, as well as galaxies' peculiar velocities. We
discuss the various contributions that break the Kaiser-Squires relation
between the shear and the convergence at different orders. We pay particular
attention to the impact of the frame-dragging vector potential on lensing
observables and we discuss potential ways to measure this effect in future
lensing surveys.
|
[{'version': 'v1', 'created': 'Thu, 31 Jan 2019 20:19:24 GMT'}]
|
2023-06-09
|
[array(['Gressel', 'Hedda A.', ''], dtype=object)
array(['Bonvin', 'Camille', ''], dtype=object)
array(['Bruni', 'Marco', ''], dtype=object)
array(['Bacon', 'David', ''], dtype=object)]
|
16,918 |
0812.0875
|
Toshio Mikami
|
Isao Higuchi, Toshio Mikami
|
Maximums and minimums of overall survival functions with fixed marginal
distributions and transmission of technology
|
Title: An unlikely result Authors: T.M. Other Comments: This paper
has been withdrawn Abstract: This paper has been withdrawn by the author due
to the fact that some of the results turned out to be known
| null | null |
IMS-EJS-EJS_2008_338
|
math.ST stat.TH
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Title: An unlikely result Authors: T.M. Other Comments: This paper has been
withdrawn Abstract: This paper has been withdrawn by the author due to the fact
that some of the results turned out to be known.
|
[{'version': 'v1', 'created': 'Thu, 4 Dec 2008 13:18:39 GMT'}
{'version': 'v2', 'created': 'Tue, 27 Jan 2009 21:34:21 GMT'}]
|
2009-09-29
|
[array(['Higuchi', 'Isao', ''], dtype=object)
array(['Mikami', 'Toshio', ''], dtype=object)]
|
16,919 |
hep-ex/0409021
|
Manfred Paulini
|
Manfred Paulini (representing the CDF and DO Collaboration)
|
Results on Heavy Quark Physics at TeV Energies
|
Proceedings of invited review talk at DAPHNE 2004 Conference 'Physics
at Meson Factories', Frascati, Italy, June 2004. 8 pages
|
Frascati Phys.Ser.36:133-140,2005
| null |
FERMILAB-CONF-04/201-E
|
hep-ex hep-ph
| null |
We review recent result on heavy quark physics at TeV energies focusing on
Run II measurements from the CDF and DO experiments at the Tevatron.
|
[{'version': 'v1', 'created': 'Tue, 7 Sep 2004 15:27:40 GMT'}]
|
2010-04-22
|
[array(['Paulini', 'Manfred', '',
'representing the CDF and DO Collaboration'], dtype=object)]
|
16,920 |
1401.7549
|
Asrin Abdolmaleki
|
A. Abdolmaleki, T. Najafi, K. Karami
|
Generalized second law of thermodynamics in scalar-tensor gravity
|
27 pages, 5 figures
|
Phys. Rev. D 89, 104041 (2014)
|
10.1103/PhysRevD.89.104041
| null |
gr-qc hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Within the context of scalar-tensor gravity, we explore the generalized
second law (GSL) of gravitational thermodynamics. We extend the action of
ordinary scalar-tensor gravity theory to the case in which there is a
non-minimal coupling between the scalar field and the matter field (as
chameleon field). Then, we derive the field equations governing the gravity and
the scalar field. For a FRW universe filled only with ordinary matter, we
obtain the modified Friedmann equations as well as the evolution equation of
the scalar field. Furthermore, we assume the boundary of the universe to be
enclosed by the dynamical apparent horizon which is in thermal equilibrium with
the Hawking temperature. We obtain a general expression for the GSL of
thermodynamics in the scalar-tensor gravity model. For some viable
scalar-tensor models, we first obtain the evolutionary behaviors of the matter
density, the scale factor, the Hubble parameter, the scalar field, the
deceleration parameter as well as the effective equation of state (EoS)
parameter. We conclude that in most of the models, the deceleration parameter
approaches a de Sitter regime at late times, as expected. Also the effective
EoS parameter acts like the LCDM model at late times. Finally, we examine the
validity of the GSL for the selected models.
|
[{'version': 'v1', 'created': 'Tue, 28 Jan 2014 18:34:55 GMT'}
{'version': 'v2', 'created': 'Mon, 26 May 2014 15:21:46 GMT'}]
|
2014-05-27
|
[array(['Abdolmaleki', 'A.', ''], dtype=object)
array(['Najafi', 'T.', ''], dtype=object)
array(['Karami', 'K.', ''], dtype=object)]
|
16,921 |
2109.02872
|
Hasanjan Sayit
|
Dongdong Hu, Hasanjan Sayit, Svetlozar T. Rachev
|
Moment Matching Method for Pricing Spread Options with Mean-Variance
Mixture L\'evy Motions
|
20 pages
| null | null | null |
q-fin.PR
|
http://creativecommons.org/licenses/by-nc-nd/4.0/
|
The paper Borovkova et al. [4] uses moment matching method to obtain closed
form formulas for spread and basket call option prices under log normal models.
In this note, we also use moment matching method to obtain semi-closed form
formulas for the price of spread options under exponential L\'evy models with
mean-variance mixture. Unlike the semi-closed form formulas in Caldana and
Fusai [5], where spread prices were expressed by using Fourier inversion
formula for general price dynamics, our formula expresses spread prices in
terms of the mixing distribution. Numerical tests show that our formulas give
accurate spread prices also
|
[{'version': 'v1', 'created': 'Tue, 7 Sep 2021 05:16:05 GMT'}]
|
2021-09-08
|
[array(['Hu', 'Dongdong', ''], dtype=object)
array(['Sayit', 'Hasanjan', ''], dtype=object)
array(['Rachev', 'Svetlozar T.', ''], dtype=object)]
|
16,922 |
2201.01839
|
Aaron Meyer
|
Aaron S. Meyer, Andr\'e Walker-Loud, Callum Wilkinson
|
Status of Lattice QCD Determination of Nucleon Form Factors and their
Relevance for the Few-GeV Neutrino Program
|
29 pages, 5 figures. Review article for Ann. Rev. Nucl. Part.,
comments from the community are welcome. v2: consistent with version to be
published in Annual Reviews of Nuclear and Particle Science with updates
reflecting referee and community comments
| null |
10.1146/annurev-nucl-010622-120608
| null |
hep-lat hep-ex hep-ph nucl-ex nucl-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Calculations of neutrino-nucleus cross sections begin with the
neutrino-nucleon interaction, making the latter critically important to
flagship neutrino oscillation experiments, despite limited measurements with
poor statistics. Alternatively, lattice QCD (LQCD) can be used to determine
these interactions from the Standard Model with quantifiable theoretical
uncertainties. Recent LQCD results of $g_{\mathrm{A}}$ are in excellent
agreement with data, and results for the (quasi-)elastic nucleon form factors
with full uncertainty budgets are expected within a few years. We review the
status of the field and LQCD results for the nucleon axial form factor,
$F_{\mathrm{A}}(Q^2)$, a major source of uncertainty in modeling sub-GeV
neutrino-nucleon interactions. Results from different LQCD calculations are
consistent, but collectively disagree with existing models, with potential
implications for current and future neutrino oscillation experiments. We
describe a road map to solidify confidence in the LQCD results and discuss
future calculations of more complicated processes, important to few-GeV
neutrino oscillation experiments.
|
[{'version': 'v1', 'created': 'Wed, 5 Jan 2022 22:06:11 GMT'}
{'version': 'v2', 'created': 'Tue, 26 Jul 2022 16:51:19 GMT'}]
|
2022-07-27
|
[array(['Meyer', 'Aaron S.', ''], dtype=object)
array(['Walker-Loud', 'André', ''], dtype=object)
array(['Wilkinson', 'Callum', ''], dtype=object)]
|
16,923 |
1401.0925
|
Eckart Grosse
|
Eckart Grosse, Arnd R. Junghans and Ralph Massarczyk
|
Importance of nuclear triaxiality for electromagnetic strength, level
density and neutron capture cross sections in heavy nuclei
|
Contribution to the proceedings of the ERINDA workshop held at CERN
in October 2013 with modifications
| null | null | null |
nucl-ex astro-ph.SR nucl-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Cross sections for neutron capture in the range of unresolved resonances are
predicted simultaneously to level distances at the neutron threshold for more
than 100 spin-0 target nuclei with A >70. Assuming triaxiality in nearly all
these nuclei a combined parameterization for both, level density and photon
strength is presented. The strength functions used are based on a global fit to
IVGDR shapes by the sum of three Lorentzians adding up to the TRK sum rule and
theory-based predictions for the A-dependence of pole energies and spreading
widths. For the small spins reached by capture level densities are well
described by only one free global parameter; a significant collective
enhancement due to the deviation from axial symmetry is observed. Reliable
predictions for compound nuclear reactions also outside the valley of stability
as expected from the derived global parameterization are important for nuclear
astrophysics and for the transmutation of nuclear waste.
|
[{'version': 'v1', 'created': 'Sun, 5 Jan 2014 18:45:11 GMT'}
{'version': 'v2', 'created': 'Mon, 20 Jan 2014 22:22:31 GMT'}
{'version': 'v3', 'created': 'Mon, 24 Feb 2014 18:19:52 GMT'}
{'version': 'v4', 'created': 'Thu, 17 Apr 2014 11:00:01 GMT'}]
|
2014-04-18
|
[array(['Grosse', 'Eckart', ''], dtype=object)
array(['Junghans', 'Arnd R.', ''], dtype=object)
array(['Massarczyk', 'Ralph', ''], dtype=object)]
|
16,924 |
hep-ph/9612227
|
Janusz Gluza
|
J. Gluza and M. Zralek (University of Silesia)
|
Heavy neutrinos production and decay in future $e^+e^-$ colliders
|
22 pages, Latex, 5 figures
|
Phys.Rev. D55 (1997) 7030-7037
|
10.1103/PhysRevD.55.7030
|
TP-USl/96/09
|
hep-ph
| null |
The production of heavy and light neutrinos in $e^+e^-$ future colliders is
considered. The cross section for the process $e^+e^- \rightarrow \nu N$ and
then the heavy neutrino decay $N \rightarrow W^{\pm} e^{\mp}$ is determined for
experimentally possible values of mixing matrix elements. The bound on the
heavy neutrino-electron mixing is estimated in models without right-handed
currents. The role of neutrino CP eigenvalues and the mass of the lightest
Higgs particle are investigated. The angular distribution of charged leptons in
the total CM frame resulting from the heavy neutrino decay and from the main
$W^+W^-$ production background process are briefly compared.
|
[{'version': 'v1', 'created': 'Mon, 2 Dec 1996 13:10:33 GMT'}]
|
2009-10-30
|
[array(['Gluza', 'J.', '', 'University of Silesia'], dtype=object)
array(['Zralek', 'M.', '', 'University of Silesia'], dtype=object)]
|
16,925 |
math/0501461
|
Yu Yuan
|
Nikolai Nadirashvili and Yu Yuan
|
Homogeneous Solutions to Fully Nonlinear Elliptic Equations
|
to appear in Proc. Amer. Math. Soc
| null | null | null |
math.AP
| null |
We classify homogeneous degree $d\neq2$ solutions to fully nonlinear elliptic
equations.
|
[{'version': 'v1', 'created': 'Tue, 25 Jan 2005 21:43:21 GMT'}]
|
2007-05-23
|
[array(['Nadirashvili', 'Nikolai', ''], dtype=object)
array(['Yuan', 'Yu', ''], dtype=object)]
|
16,926 |
2002.02826
|
Chi-Ken Lu
|
Chi-Ken Lu, Patrick Shafto
|
Conditional Deep Gaussian Processes: multi-fidelity kernel learning
|
Submitted on Oct 1st 2021 with a sequel titled "Conditional Deep
Gaussian Process: empirical Bayes hyperdata learning"
|
Entropy 2021, 23(11), 1545
|
10.3390/e23111545
| null |
cs.LG cond-mat.dis-nn stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Deep Gaussian Processes (DGPs) were proposed as an expressive Bayesian model
capable of a mathematically grounded estimation of uncertainty. The
expressivity of DPGs results from not only the compositional character but the
distribution propagation within the hierarchy. Recently, [1] pointed out that
the hierarchical structure of DGP well suited modeling the multi-fidelity
regression, in which one is provided sparse observations with high precision
and plenty of low fidelity observations. We propose the conditional DGP model
in which the latent GPs are directly supported by the fixed lower fidelity
data. Then the moment matching method in [2] is applied to approximate the
marginal prior of conditional DGP with a GP. The obtained effective kernels are
implicit functions of the lower-fidelity data, manifesting the expressivity
contributed by distribution propagation within the hierarchy. The
hyperparameters are learned via optimizing the approximate marginal likelihood.
Experiments with synthetic and high dimensional data show comparable
performance against other multi-fidelity regression methods, variational
inference, and multi-output GP. We conclude that, with the low fidelity data
and the hierarchical DGP structure, the effective kernel encodes the inductive
bias for true function allowing the compositional freedom discussed in [3,4].
|
[{'version': 'v1', 'created': 'Fri, 7 Feb 2020 14:56:11 GMT'}
{'version': 'v2', 'created': 'Wed, 2 Dec 2020 18:07:01 GMT'}
{'version': 'v3', 'created': 'Fri, 1 Oct 2021 18:03:07 GMT'}]
|
2021-11-23
|
[array(['Lu', 'Chi-Ken', ''], dtype=object)
array(['Shafto', 'Patrick', ''], dtype=object)]
|
16,927 |
1705.11008
|
Rajibul Shaikh
|
Rajibul Shaikh, Sayan Kar
|
Gravitational lensing by scalar-tensor wormholes and the energy
conditions
|
29 pages, 11 figures, revised version with a new section, published
in PRD
|
Phys. Rev. D 96, 044037 (2017)
|
10.1103/PhysRevD.96.044037
| null |
gr-qc hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study gravitational lensing by a class of zero Ricci scalar wormholes
which arise as solutions in a scalar-tensor theory of gravity. An attempt is
made to find a possible link between lensing features, stable/unstable photon
orbits and the energy conditions on the matter required to support these
spacetimes. Our analysis shows (for this class of wormholes) that light rays
always exhibit a positive deflection if the energy conditions are satisfied
(nonexotic matter content). In contrast, if the energy conditions are violated
(exotic matter), the net deflection of a light ray may be positive, negative or
even zero, depending on values of the metric and impact parameters. This
prompts us to introduce a surface defined by a turning point value at which the
net deflection of a light ray is equal to zero, even though we have a curved
spacetime geometry. We argue that the existence of such a surface may be linked
to exotic/energy condition violating matter. Wormholes in modified gravity with
matter satisfying the energy conditions do not seem to have such a zero
deflection surface. Finally, we study strong gravitational lensing briefly and
also look into the formation of Einstein and relativistic Einstein rings. We
conclude with some estimates on the wormhole mass, throat-radius and the
detectability of the Einstein rings.
|
[{'version': 'v1', 'created': 'Wed, 31 May 2017 10:00:15 GMT'}
{'version': 'v2', 'created': 'Sun, 27 Aug 2017 15:19:48 GMT'}]
|
2017-08-29
|
[array(['Shaikh', 'Rajibul', ''], dtype=object)
array(['Kar', 'Sayan', ''], dtype=object)]
|
16,928 |
1602.05965
|
Justin Finke
|
Justin Finke
|
Modeling Fermi Large Area Telescope and Multiwavelength Data from
Blazars
|
21 pages, 3 figures. To appear in the Proceedings of the 3rd Annual
Conference on High Energy Astrophysics in Southern Africa (HEASA2015), 18-20
June 2015, Johannesburg, South Africa, Eds. M. Boettcher, D. Buckley, S.
Colafrancesco, P. Meintjes and S. Razzaque. arXiv admin note: text overlap
with arXiv:1303.5095
| null | null | null |
astro-ph.HE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Blazars are active galactic nuclei with relativistic jets pointed at the
Earth, making them extremely bright at essentially all wavelengths, from radio
to gamma rays. I review the modeling of this broadband spectral energy
distributions of these objects, and what we have learned, with a focus on gamma
rays.
|
[{'version': 'v1', 'created': 'Thu, 18 Feb 2016 21:01:48 GMT'}]
|
2016-02-22
|
[array(['Finke', 'Justin', ''], dtype=object)]
|
16,929 |
0805.1575
|
Mong Lung Lang
|
Mong Lung Lang
|
Ranks of the Sylow 2-subgroups of the classical Simple groups
| null | null | null | null |
math.GR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We determine the ranks of the Sylow 2-subgroups of the classical simple
groups of odd characteristic.
|
[{'version': 'v1', 'created': 'Mon, 12 May 2008 02:12:33 GMT'}]
|
2008-05-13
|
[array(['Lang', 'Mong Lung', ''], dtype=object)]
|
16,930 |
2208.08504
|
Saeed Noori Gashti
|
S. Noori Gashti, J. Sadeghi
|
Constraints on cosmological parameters in light of the scalar-tensor
theory of gravity and swampland conjectures
|
28pages, 16 figures, accepted in MPLA
|
Modern Physics Letters A, 2250110 (2022)
|
10.1142/S0217732322501103
| null |
gr-qc hep-th
|
http://creativecommons.org/licenses/by/4.0/
|
In this paper, we study various cosmological parameters and quantities in
scalar-tensor gravity from inflation and swampland conjecture. Therefore, by
selecting different models such as power-law, exponential, and logarithmic in
the framework of scalar-tensor theory, we obtain potential, tensor-to-scalar
ratio, and the scalar spectral index. Next, we examine new constraints and
compare the corresponding results with the latest observable data. Here, we
take advantage of the obtained results and determine the compatibility or
incompatibility of the corresponding model with the swampland conjectures
|
[{'version': 'v1', 'created': 'Wed, 17 Aug 2022 19:51:40 GMT'}]
|
2022-08-19
|
[array(['Gashti', 'S. Noori', ''], dtype=object)
array(['Sadeghi', 'J.', ''], dtype=object)]
|
16,931 |
1701.07320
|
Bin Chen
|
Bin Chen, Tanya Ignatenko, Frans M.J. Willems, Roel Maes, Erik van der
Sluis, Georgios Selimis
|
A Robust SRAM-PUF Key Generation Scheme Based on Polar Codes
|
7pages, 5 figure, globecom2017
| null |
10.1109/GLOCOM.2017.8254007
| null |
cs.IT math.IT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Physical unclonable functions (PUFs) are relatively new security primitives
used for device authentication and device-specific secret key generation. In
this paper we focus on SRAM-PUFs. The SRAM-PUFs enjoy uniqueness and randomness
properties stemming from the intrinsic randomness of SRAM memory cells, which
is a result of manufacturing variations. This randomness can be translated into
the cryptographic keys thus avoiding the need to store and manage the device
cryptographic keys. Therefore these properties, combined with the fact that
SRAM memory can be often found in today's IoT devices, make SRAM-PUFs a
promising candidate for securing and authentication of the resource-constrained
IoT devices. PUF observations are always effected by noise and environmental
changes. Therefore secret-generation schemes with helper data are used to
guarantee reliable regeneration of the PUF-based secret keys. Error correction
codes (ECCs) are an essential part of these schemes. In this work, we propose a
practical error correction construction for PUF-based secret generation that
are based on polar codes. The resulting scheme can generate $128$-bit keys
using $1024$ SRAM-PUF bits and $896$ helper data bits and achieve a failure
probability of $10^{-9}$ or lower for a practical SRAM-PUFs setting with bit
error probability of $15\%$. The method is based on successive cancellation
combined with list decoding and hash-based checking that makes use of the hash
that is already available at the decoder. In addition, an adaptive list decoder
for polar codes is investigated. This decoder increases the list size only if
needed.
|
[{'version': 'v1', 'created': 'Wed, 25 Jan 2017 14:13:53 GMT'}
{'version': 'v2', 'created': 'Wed, 22 Feb 2017 14:18:09 GMT'}
{'version': 'v3', 'created': 'Thu, 27 Jul 2017 11:42:42 GMT'}]
|
2018-05-03
|
[array(['Chen', 'Bin', ''], dtype=object)
array(['Ignatenko', 'Tanya', ''], dtype=object)
array(['Willems', 'Frans M. J.', ''], dtype=object)
array(['Maes', 'Roel', ''], dtype=object)
array(['van der Sluis', 'Erik', ''], dtype=object)
array(['Selimis', 'Georgios', ''], dtype=object)]
|
16,932 |
1502.00412
|
Giacomo Aletti
|
Andrea Ghiglietti, Francesca Ieva, Anna Maria Paganoni and Giacomo
Aletti
|
On linear regression models in infinite dimensional spaces with scalar
response
| null |
Stat Papers (2017) 58: 527-548
|
10.1007/s00362-015-0710-2
| null |
math.ST stat.ME stat.TH
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In functional linear regression, the parameters estimation involves solving a
non necessarily well-posed problem and it has points of contact with a range of
methodologies, including statistical smoothing, deconvolution and projection on
finite-dimensional subspaces. We discuss the standard approach based explicitly
on functional principal components analysis, nevertheless the choice of the
number of basis components remains something subjective and not always properly
discussed and justified. In this work we discuss inferential properties of
least square estimation in this context with different choices of projection
subspaces, as well as we study asymptotic behaviour increasing the dimension of
subspaces.
|
[{'version': 'v1', 'created': 'Mon, 2 Feb 2015 09:14:18 GMT'}]
|
2018-01-04
|
[array(['Ghiglietti', 'Andrea', ''], dtype=object)
array(['Ieva', 'Francesca', ''], dtype=object)
array(['Paganoni', 'Anna Maria', ''], dtype=object)
array(['Aletti', 'Giacomo', ''], dtype=object)]
|
16,933 |
1511.02316
|
Xi Tu
|
Xi Tu and Zhaoyang Yin
|
Analyticity of the Cauchy problem and persistence properties for a
generalized Camassa-Holm equation
|
arXiv admin note: substantial text overlap with arXiv:1505.00086;
text overlap with arXiv:1202.0718 by other authors
| null | null | null |
math.AP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This paper is mainly concerned with the Cauchy problem for a generalized
Camassa-Holm equation with analytic initial data. The analyticity of its
solutions is proved in both variables, globally in space and locally in time.
Then, we present a persistence property for strong solutions to the system.
Finally, explicit asymptotic profiles illustrate the optimality of these
results.
|
[{'version': 'v1', 'created': 'Sat, 7 Nov 2015 07:56:02 GMT'}]
|
2015-11-10
|
[array(['Tu', 'Xi', ''], dtype=object)
array(['Yin', 'Zhaoyang', ''], dtype=object)]
|
16,934 |
1811.04071
|
Alex Nielsen
|
Alex B. Nielsen, Alexander H. Nitz, Collin D. Capano, Duncan A. Brown
|
Investigating the noise residuals around the gravitational wave event
GW150914
|
14 pages, 7 figures. Minor text and figure changes in final v3.
Notebooks for generating the results are available at
https://github.com/gwastro/gw150914_investigation
| null |
10.1088/1475-7516/2019/02/019
| null |
astro-ph.HE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We use the Pearson cross-correlation statistic proposed by Liu and Jackson,
and employed by Creswell et al., to look for statistically significant
correlations between the LIGO Hanford and Livingston detectors at the time of
the binary black hole merger GW150914. We compute this statistic for the
calibrated strain data released by LIGO, using both the residuals provided by
LIGO and using our own subtraction of a maximum-likelihood waveform that is
constructed to model binary black hole mergers in general relativity. To assign
a significance to the values obtained, we calculate the cross-correlation of
both simulated Gaussian noise and data from the LIGO detectors at times during
which no detection of gravitational waves has been claimed. We find that after
subtracting the maximum likelihood waveform there are no statistically
significant correlations between the residuals of the two detectors at the time
of GW150914.
|
[{'version': 'v1', 'created': 'Fri, 9 Nov 2018 18:59:49 GMT'}
{'version': 'v2', 'created': 'Tue, 20 Nov 2018 18:24:09 GMT'}
{'version': 'v3', 'created': 'Tue, 12 Feb 2019 16:54:55 GMT'}]
|
2019-02-20
|
[array(['Nielsen', 'Alex B.', ''], dtype=object)
array(['Nitz', 'Alexander H.', ''], dtype=object)
array(['Capano', 'Collin D.', ''], dtype=object)
array(['Brown', 'Duncan A.', ''], dtype=object)]
|
16,935 |
2006.09073
|
Zihao Zhu
|
Zihao Zhu, Jing Yu, Yujing Wang, Yajing Sun, Yue Hu, Qi Wu
|
Mucko: Multi-Layer Cross-Modal Knowledge Reasoning for Fact-based Visual
Question Answering
| null | null | null | null |
cs.CV cs.AI cs.CL cs.LG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Fact-based Visual Question Answering (FVQA) requires external knowledge
beyond visible content to answer questions about an image, which is challenging
but indispensable to achieve general VQA. One limitation of existing FVQA
solutions is that they jointly embed all kinds of information without
fine-grained selection, which introduces unexpected noises for reasoning the
final answer. How to capture the question-oriented and
information-complementary evidence remains a key challenge to solve the
problem. In this paper, we depict an image by a multi-modal heterogeneous
graph, which contains multiple layers of information corresponding to the
visual, semantic and factual features. On top of the multi-layer graph
representations, we propose a modality-aware heterogeneous graph convolutional
network to capture evidence from different layers that is most relevant to the
given question. Specifically, the intra-modal graph convolution selects
evidence from each modality and cross-modal graph convolution aggregates
relevant information across different modalities. By stacking this process
multiple times, our model performs iterative reasoning and predicts the optimal
answer by analyzing all question-oriented evidence. We achieve a new
state-of-the-art performance on the FVQA task and demonstrate the effectiveness
and interpretability of our model with extensive experiments.
|
[{'version': 'v1', 'created': 'Tue, 16 Jun 2020 11:03:37 GMT'}
{'version': 'v2', 'created': 'Wed, 17 Jun 2020 00:49:02 GMT'}
{'version': 'v3', 'created': 'Wed, 4 Nov 2020 01:36:36 GMT'}]
|
2020-11-05
|
[array(['Zhu', 'Zihao', ''], dtype=object)
array(['Yu', 'Jing', ''], dtype=object)
array(['Wang', 'Yujing', ''], dtype=object)
array(['Sun', 'Yajing', ''], dtype=object)
array(['Hu', 'Yue', ''], dtype=object)
array(['Wu', 'Qi', ''], dtype=object)]
|
16,936 |
1902.01956
|
Sevan Harput
|
S. Harput, L. Nie, D.M.J. Cowell, T. Carpenter, B. Raiton, J.
McLaughlan, and S. Freear
|
Simultaneous Acoustic Trapping and Imaging of Microbubbles at Clinically
Relevant Flow Rates
| null | null | null | null |
physics.med-ph
|
http://creativecommons.org/licenses/by/4.0/
|
Mechanisms for non-invasive target drug delivery using microbubbles and
ultrasound have attracted growing interest. Microbubbles can be loaded with a
therapeutic payload and tracked via ultrasound imaging to selectively release
their payload at ultrasound-targeted locations. In this study, an ultrasonic
trapping method is proposed for simultaneously imaging and controlling the
location of microbubbles in flow by using acoustic radiation force. Targeted
drug delivery methods are expected to benefit from the use of the ultrasonic
trap, since trapping will increase the MB concentration at a desired location
in human body.
The ultrasonic trap was generated by using an ultrasound research system UARP
II and a linear array transducer. The trap was designed asymmetrically to
produces a weaker radiation force at the inlet of the trap to further
facilitate microbubble entrance. A pulse sequence was generated that can switch
between a long duration trapping waveform and short duration imaging waveform.
High frame rate plane wave imaging was chosen for monitoring trapped
microbubbles at 1 kHz. The working principle of the ultrasonic trap was
explained and demonstrated in an ultrasound phantom by injecting SonoVue
microbubbles flowing at 80 mL/min flow rate in a 3.5 mm diameter vessel.
|
[{'version': 'v1', 'created': 'Tue, 5 Feb 2019 22:16:27 GMT'}]
|
2019-02-07
|
[array(['Harput', 'S.', ''], dtype=object)
array(['Nie', 'L.', ''], dtype=object)
array(['Cowell', 'D. M. J.', ''], dtype=object)
array(['Carpenter', 'T.', ''], dtype=object)
array(['Raiton', 'B.', ''], dtype=object)
array(['McLaughlan', 'J.', ''], dtype=object)
array(['Freear', 'S.', ''], dtype=object)]
|
16,937 |
2111.08496
|
Brian Camley
|
Amit R. Singh, Travis Leadbetter, Brian A. Camley
|
Sensing the shape of a cell with reaction-diffusion and energy
minimization
| null |
Proc. Nat. Acad. Sci. 119 (31) e2121302119, 2022
|
10.1073/pnas.2121302119
| null |
physics.bio-ph cond-mat.soft q-bio.SC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Some dividing cells sense their shape by becoming polarized along their long
axis. Cell polarity is controlled in part by polarity proteins like Rho GTPases
cycling between active membrane-bound forms and inactive cytosolic forms,
modeled as a "wave-pinning" reaction-diffusion process. Does shape sensing
emerge from wave-pinning? We show that wave pinning senses the cell's long
axis. Simulating wave-pinning on a curved surface, we find that high-activity
domains migrate to peaks and troughs of the surface. For smooth surfaces, a
simple rule of minimizing the domain perimeter while keeping its area fixed
predicts the final position of the domain and its shape. However, when we
introduce roughness to our surfaces, shape sensing can be disrupted, and
high-activity domains can become localized to locations other than the global
peaks and valleys of the surface. On rough surfaces, the domains of the
wave-pinning model are more robust in finding the peaks and troughs than the
minimization rule, though both can become trapped in steady states away from
the peaks and valleys. We can control the robustness of shape sensing by
altering the Rho GTPase diffusivity and the domain size. We also find that the
shape sensing properties of cell polarity models can explain how domains
localize to curved regions of deformed cells. Our results help to understand
the factors that allow cells to sense their shape - and the limits that
membrane roughness can place on this process.
|
[{'version': 'v1', 'created': 'Tue, 16 Nov 2021 14:17:04 GMT'}
{'version': 'v2', 'created': 'Tue, 28 Jun 2022 16:57:20 GMT'}
{'version': 'v3', 'created': 'Fri, 8 Jul 2022 22:15:24 GMT'}]
|
2022-09-13
|
[array(['Singh', 'Amit R.', ''], dtype=object)
array(['Leadbetter', 'Travis', ''], dtype=object)
array(['Camley', 'Brian A.', ''], dtype=object)]
|
16,938 |
physics/0310133
|
Gianluca Geloni
|
G. Geloni, E. Saldin, E. Schneidmiller and M. Yurkov
|
Misconceptions regarding the cancellation of self-forces in the
transverse equation of motion for an electron in a bunch
|
15 pages, 3 figures
| null | null |
DESY 03-165
|
physics.acc-ph
| null |
As a consequence of motions driven by external forces, self-fields originate
within an electron bunch, which are different from the static case. In the case
of magnetic external forces acting on an ultrarelativistic beam, the
longitudinal self-interactions are responsible for CSR (Coherent Synchrotron
Radiation)-related phenomena, which have been studied extensively. On the other
hand, transverse self-interactions are present too. At the time being, several
existing theoretical analysis of transverse dynamics rely on the so-called
cancellation effect, which has been around for more than ten years. In this
paper we explain why in our view such an effect is not of practical nor of
theoretical importance.
|
[{'version': 'v1', 'created': 'Mon, 27 Oct 2003 13:31:35 GMT'}]
|
2007-05-23
|
[array(['Geloni', 'G.', ''], dtype=object)
array(['Saldin', 'E.', ''], dtype=object)
array(['Schneidmiller', 'E.', ''], dtype=object)
array(['Yurkov', 'M.', ''], dtype=object)]
|
16,939 |
2204.07468
|
Hossein Moeini
|
H. Moeini and G.H. Bordbar
|
Nuclear matter calculations with the phenomenological three-nucleon
interaction
|
20 pages, 6 figures
|
Nuclear Physics A1017, January 2022, 122339
|
10.1016/j.nuclphysa.2021.122339
| null |
nucl-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Employing the concept of three-body radial distribution function and using
the two-body correlation functions, calculated based on the lowest order
constrained variational method, we investigated the effect of the three-body
force (TBF) on the nuclear matter properties, for Argonne and Urbana
$\it{v_{14}}$ potentials. As such, the results for nuclear matter density,
incompressibility, energy per nucleon, and symmetry energy are presented at the
saturation point. The inclusion of a phenomenological TBF resulted in closer
values of the saturation density, incompressibility, and symmetry energy to the
empirical ones for the symmetric nuclear matter. This is especially the case
for the Urbana $\it{v_{14}}$ potential. In addition, an empirically-verified
parabolic approximation of the interaction energy was utilized to perform an
approximate study of the nuclear matter with neutron excess. Hence, at
densities higher than about 0.3~fm$^{-3}$ and for proton-to-neutron density
ratios close to the symmetric nuclear matter, the inclusion of TBF resulted in
an extra attraction for the Argonne as compared to the Urbana $\it{v_{14}}$
potential.
|
[{'version': 'v1', 'created': 'Fri, 15 Apr 2022 14:09:09 GMT'}]
|
2022-04-18
|
[array(['Moeini', 'H.', ''], dtype=object)
array(['Bordbar', 'G. H.', ''], dtype=object)]
|
16,940 |
2112.12898
|
Chris MacMinn
|
Callum Cuttle and Christopher W. MacMinn
|
Dynamics of compression-driven gas-liquid displacement in a capillary
tube
| null |
Physical Review Letters 130, 114001 (2023)
|
10.1103/PhysRevLett.130.114001
| null |
physics.flu-dyn cond-mat.soft
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study two-phase displacement via the steady compression of an air
reservoir connected to an oil-filled capillary tube. Our experiments and
modelling reveal complex displacement dynamics depending on compression rate
and reservoir volume that, for large reservoirs, depend on a single
dimensionless compressibility number. We identify two distinct displacement
regimes, separated by a critical value of the compressibility number. While the
subcritical regime exhibits quasi-steady displacement after an initial
transient, the supercritical regime exhibits burst-like expulsion.
|
[{'version': 'v1', 'created': 'Fri, 24 Dec 2021 01:11:24 GMT'}
{'version': 'v2', 'created': 'Thu, 27 Apr 2023 17:40:59 GMT'}]
|
2023-04-28
|
[array(['Cuttle', 'Callum', ''], dtype=object)
array(['MacMinn', 'Christopher W.', ''], dtype=object)]
|
16,941 |
0806.2995
|
Benjamin Smith
|
Benjamin Smith
|
Isogenies and the Discrete Logarithm Problem in Jacobians of Genus 3
Hyperelliptic Curves
|
This is an extended version of work that appeared in the proceedings
of the Eurocrypt 2008 conference
| null | null | null |
math.NT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We describe the use of explicit isogenies to translate instances of the
Discrete Logarithm Problem (DLP) from Jacobians of hyperelliptic genus 3 curves
to Jacobians of non-hyperelliptic genus 3 curves, where they are vulnerable to
faster index calculus attacks. We provide explicit formulae for isogenies with
kernel isomorphic to $(\ZZ/2\ZZ)^3$ (over an algebraic closure of the base
field) for any hyperelliptic genus 3 curve over a field of characteristic not 2
or 3. These isogenies are rational for a positive fraction of all hyperelliptic
genus 3 curves defined over a finite field of characteristic $p > 3$. Subject
to reasonable assumptions, our constructions give an explicit and efficient
reduction of instances of the DLP from hyperelliptic to non-hyperelliptic
Jacobians for around 18.57% of all hyperelliptic genus 3 curves over a given
finite field. We conclude with a discussion on extending these ideas to
isogenies with more general kernels. A condensed version of this work appeared
in the proceedings of the EUROCRYPT 2008 conference.
|
[{'version': 'v1', 'created': 'Wed, 18 Jun 2008 13:31:52 GMT'}
{'version': 'v2', 'created': 'Fri, 27 Feb 2009 12:45:26 GMT'}]
|
2009-02-27
|
[array(['Smith', 'Benjamin', ''], dtype=object)]
|
16,942 |
1702.07789
|
Pedro Bicudo
|
P. Bicudo, M. Cardoso, O. Oliveira, P. J. Silva
|
Lattice QCD static potentials of the meson-meson and tetraquark systems
computed with both quenched and full QCD
|
24 pages, 17 figures, 14 tables
|
Phys. Rev. D 96, 074508 (2017)
|
10.1103/PhysRevD.96.074508
| null |
hep-lat hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We revisit the static potential for the $Q Q \bar Q \bar Q$ system using
SU(3) lattice simulations, studying both the colour singlets groundstate and
first excited state. We consider geometries where the two static quarks and the
two anti-quarks are at the corners of rectangles of different sizes. We analyse
the transition between a tetraquark system and a two meson system with a two by
two correlator matrix. We compare the potentials computed with quenched QCD and
with dynamical quarks. We also compare our simulations with the results of
previous studies and analyze quantitatively fits of our results with anzatse
inspired in the string flip-flop model and in its possible colour excitations.
|
[{'version': 'v1', 'created': 'Fri, 24 Feb 2017 22:29:06 GMT'}]
|
2017-11-01
|
[array(['Bicudo', 'P.', ''], dtype=object)
array(['Cardoso', 'M.', ''], dtype=object)
array(['Oliveira', 'O.', ''], dtype=object)
array(['Silva', 'P. J.', ''], dtype=object)]
|
16,943 |
astro-ph/0311477
|
Dimitrios Gouliermis
|
D. Gouliermis, S. C. Keller, M. Kontizas, E. Kontizas, I.
Bellas-Velidis
|
Mass Segregation in Young Magellanic Clouds Star Clusters: Four Clusters
observed with HST
|
A&A Accepted, 20 pages, 9 Figures, Version with language errors and
typos corrected
|
Astron.Astrophys. 416 (2004) 137-155
|
10.1051/0004-6361:20031702
| null |
astro-ph
| null |
We present the results of our investigation on the phenomenon of mass
segregation in young star clusters in the Magellanic Clouds. HST/WFPC2
observations on NGC 1818, NGC 2004 & NGC 2100 in the Large Magellanic Cloud and
NGC 330 in the Small Magellanic Cloud have been used for the application of
diagnostic tools for mass segregation: i) the radial density profiles of the
clusters for various mass groups and ii) their mass functions (MFs) at various
radii around their centres. All four clusters are found to be mass segregated,
but each one in a different manner. Specifically not all the clusters in the
sample show the same dependence of their density profiles on the selected
magnitude range, with NGC 1818 giving evidence of a strong such relation and
NGC 330 showing only a hint of the phenomenon. NGC 2004 did not also show any
significant signature of mass segregation in its density profiles. The MFs
radial dependence provides clear proof of the phenomenon for NGC 1818, NGC 2100
and NGC 2004, while for NGC 330 it gives only indications. An investigation on
the constraints introduced by the application of both diagnostic tools is
presented. We also discuss the problems related to the construction of a
reliable MF for a cluster and their impact on the investigation of the
phenomenon of mass segregation. We find that the MFs of these clusters as they
were constructed with two methods, are comparable to Salpeter's IMF. A
discussion is given on the dynamical status of the clusters and a test is
applied on the equipartition among several mass groups in them. Both showed
that the observed mass segregation in the clusters is of primordial nature.
|
[{'version': 'v1', 'created': 'Thu, 20 Nov 2003 16:07:34 GMT'}
{'version': 'v2', 'created': 'Wed, 26 Nov 2003 15:00:48 GMT'}]
|
2009-11-10
|
[array(['Gouliermis', 'D.', ''], dtype=object)
array(['Keller', 'S. C.', ''], dtype=object)
array(['Kontizas', 'M.', ''], dtype=object)
array(['Kontizas', 'E.', ''], dtype=object)
array(['Bellas-Velidis', 'I.', ''], dtype=object)]
|
16,944 |
math/0111162
|
Winfried Bruns
|
Winfried Bruns and Joseph Gubeladze
|
Unimodular covers of multiples of polytopes
|
13 pages, uses pstricks and mathptm The revised version has been
thoroughly rewritten
| null | null | null |
math.CO
| null |
Let P be a d-dimensional lattice polytope. We show that there exists a
natural number c_d, only depending on d, such that the multiples cP have a
unimodular cover for every natural number c >= c_d. Actually, a subexponential
upper bound for c_d is provided, together with an analogous result for
unimodular covers of rational cones.
|
[{'version': 'v1', 'created': 'Wed, 14 Nov 2001 10:49:54 GMT'}
{'version': 'v2', 'created': 'Sun, 10 Mar 2002 16:25:03 GMT'}
{'version': 'v3', 'created': 'Wed, 4 Dec 2002 10:00:56 GMT'}]
|
2007-05-23
|
[array(['Bruns', 'Winfried', ''], dtype=object)
array(['Gubeladze', 'Joseph', ''], dtype=object)]
|
16,945 |
1212.5626
|
Xingting Wang
|
Linhong Wang and Xingting Wang
|
Classification of pointed Hopf algebras of dimension $p^2$ over any
algebraically closed field
|
10 pages, no figures
|
Algebr. Represent. Theory 17 (2014), no. 4, 1267-1276
|
10.1007/s10468-013-9446-7
| null |
math.RA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Let $p$ be a prime. We complete the classification on pointed Hopf algebras
of dimension $p^2$ over an algebraically closed field $k$. When $\text{char}k
\neq p$, our result is the same as the well-known result for $\text{char}k=0$.
When $\text{char}k=p$, we obtain 14 types of pointed Hopf algebras of dimension
$p^2$, including a unique noncommutative and noncocommutative type.
|
[{'version': 'v1', 'created': 'Fri, 21 Dec 2012 22:54:25 GMT'}
{'version': 'v2', 'created': 'Fri, 2 Aug 2013 21:28:47 GMT'}
{'version': 'v3', 'created': 'Thu, 12 Mar 2015 22:49:03 GMT'}]
|
2015-03-16
|
[array(['Wang', 'Linhong', ''], dtype=object)
array(['Wang', 'Xingting', ''], dtype=object)]
|
16,946 |
1806.03040
|
Volker Perdelwitz
|
V. Perdelwitz, P. Huke
|
A systematic approach to determining the properties of an iodine
absorption cell for high-precision radial velocity measurements
|
8 pages, 9 figures accepted for publication in MNRAS
| null |
10.1093/mnras/sty1523
| null |
astro-ph.IM
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Absorption cells filled with diatomic iodine are frequently employed as
wavelength reference for high-precision stellar radial velocity determination
due their long-term stability and low cost. Despite their wide-spread usage in
the community, there is little documentation on how to determine the ideal
operating temperature of an individual cell. We have developed a new approach
to measuring the effective molecular temperature inside a gas absorption cell
and searching for effects detrimental to a high precision wavelength reference,
utilizing the Boltzmann distribution of relative line depths within absorption
bands of single vibrational transitions. With a high resolution Fourier
transform spectrometer, we took a series of 632 spectra at temperatures between
23{\deg}C and 66{\deg}C. These spectra provide a sufficient basis to test the
algorithm and demonstrate the stability and repeatability of the temperature
determination via molecular lines on a single iodine absorption cell. The
achievable radial velocity precision is found to be independent of the cell
temperature and a detailed analysis shows a wavelength dependency, which
originates in the resolving power of the spectrometer in use and the
signal-to-noise ratio. Two effects were found to cause apparent absolute shifts
in radial velocity, a temperature-induced shift of the order of 1 m/s/K and a
more significant effect resulting in abrupt jumps of 50 m/s is determined to be
caused by the temperature crossing the dew point of the molecular iodine.
|
[{'version': 'v1', 'created': 'Fri, 8 Jun 2018 09:32:50 GMT'}]
|
2018-06-27
|
[array(['Perdelwitz', 'V.', ''], dtype=object)
array(['Huke', 'P.', ''], dtype=object)]
|
16,947 |
2305.08157
|
Shomik Jain
|
Shomik Jain, Vinith Suriyakumar, Ashia Wilson
|
Algorithmic Pluralism: A Structural Approach Towards Equal Opportunity
| null | null | null | null |
cs.CY
|
http://creativecommons.org/licenses/by/4.0/
|
While the idea of equal opportunity enjoys a broad consensus, many disagree
about what it means for opportunities to be equal. The algorithmic fairness
community often relies on formal approaches to quantitatively determine if
opportunities are allocated equally. A more structural approach put forth by
Joseph Fishkin focuses on the wider network of decisions that determine which
opportunities are allocated to whom. In this so-called opportunity structure,
decision points represent bottlenecks that are often chained together so that
the output of one decision is an input to the next. By evaluating the severity
and legitimacy of these bottlenecks, Fishkin offers a qualitative framework to
assess whether equal opportunity is infringed upon in a structural way. We
adopt this structural viewpoint and use it to reframe many interdisciplinary
discussions about equal opportunity in systems of algorithmic decision-making.
Drawing on examples from education, healthcare, and criminal justice, we
recommend prioritizing regulatory and design-based interventions that alleviate
severe bottlenecks in order to help expand access to opportunities in a
pluralistic way.
|
[{'version': 'v1', 'created': 'Sun, 14 May 2023 13:37:17 GMT'}
{'version': 'v2', 'created': 'Thu, 25 May 2023 15:10:50 GMT'}]
|
2023-05-26
|
[array(['Jain', 'Shomik', ''], dtype=object)
array(['Suriyakumar', 'Vinith', ''], dtype=object)
array(['Wilson', 'Ashia', ''], dtype=object)]
|
16,948 |
gr-qc/0110036
|
Matt Visser
|
Carlos Barcelo (Washington University in Saint Louis) Stefano Liberati
(University of Maryland), Matt Visser (Washington University in Saint Louis)
|
Towards the observation of Hawking radiation in Bose--Einstein
condensates
|
revtex4; 5 pages in double-column format
|
Int.J.Mod.Phys. A18 (2003) 3735
|
10.1142/S0217751X0301615X
| null |
gr-qc cond-mat hep-th
| null |
Acoustic analogues of black holes (dumb holes) are generated when a
supersonic fluid flow entrains sound waves and forms a trapped region from
which sound cannot escape. The surface of no return, the acoustic horizon, is
qualitatively very similar to the event horizon of a general relativity black
hole. In particular Hawking radiation (a thermal bath of phonons with
temperature proportional to the ``surface gravity'') is expected to occur. In
this note we consider quasi-one-dimensional supersonic flow of a Bose--Einstein
condensate (BEC) in a Laval nozzle (converging-diverging nozzle), with a view
to finding which experimental settings could magnify this effect and provide an
observable signal. We identify an experimentally plausible configuration with a
Hawking temperature of order 70 n K; to be contrasted with a condensation
temperature of the order of 90 n K.
|
[{'version': 'v1', 'created': 'Sat, 6 Oct 2001 19:10:22 GMT'}]
|
2009-11-07
|
[array(['Barcelo', 'Carlos', '', 'Washington University in Saint Louis'],
dtype=object)
array(['Liberati', 'Stefano', '', 'University of Maryland'], dtype=object)
array(['Visser', 'Matt', '', 'Washington University in Saint Louis'],
dtype=object) ]
|
16,949 |
0711.3381
|
Momme Winkelnkemper
|
M. Winkelnkemper, R. Seguin, S. Rodt, A. Schliwa, L. Reissmann, A.
Strittmatter, A. Hoffmann, D. Bimberg
|
Polarized Emission Lines from Single InGaN/GaN Quantum Dots: Role of the
Valence-band Structure of Wurtzite Group-III Nitrides
|
Conf. Proc. of the MSS-13 in Genova 2007, accepted at Physica E
|
Physica E 40, 2217 (2008)
|
10.1016/j.physe.2007.11.033
| null |
cond-mat.mtrl-sci
| null |
We present a study of the polarization properties of emission lines from
single InGaN/GaN quantum dots (QDs). The QDs, formed by spinodal decomposition
within ultra-thin InGaN quantum wells, are investigated using single-QD
cathodoluminescence (CL). The emission lines exhibit a systematic linear
polarization in the orthogonal crystal directions [1 1 -2 0] and [-1 1 0 0]--a
symmetry that is non-native to hexagonal crystals.
Eight-band k.p calculations reveal a mechanism that can explain the observed
polarizations: The character of the hole(s) in an excitonic complex determines
the polarization direction of the respective emission if the QD is slightly
elongated. Transitions involving A-band holes are polarized parallel to the
elongation; transitions involving B-type holes are polarized in the orthogonal
direction. The energetic separation of both hole states is smaller than 10 meV.
The mechanism leading to the linear polarizations is not restricted to InGaN
QDs, but should occur in other wurtzite-nitride QDs and in materials with
similar valence band structure.
|
[{'version': 'v1', 'created': 'Wed, 21 Nov 2007 14:26:34 GMT'}]
|
2008-06-13
|
[array(['Winkelnkemper', 'M.', ''], dtype=object)
array(['Seguin', 'R.', ''], dtype=object)
array(['Rodt', 'S.', ''], dtype=object)
array(['Schliwa', 'A.', ''], dtype=object)
array(['Reissmann', 'L.', ''], dtype=object)
array(['Strittmatter', 'A.', ''], dtype=object)
array(['Hoffmann', 'A.', ''], dtype=object)
array(['Bimberg', 'D.', ''], dtype=object)]
|
16,950 |
1307.8263
|
Laurent Frantz
|
Konrad Lohse and Laurent A.F. Frantz
|
Maximum likelihood evidence for Neandertal admixture in Eurasian
populations from three genomes
| null | null | null | null |
q-bio.PE q-bio.GN
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Although there has been much interest in estimating divergence and admixture
from genomic data, it has proven difficult to distinguish gene flow after
divergence from alternative histories involving structure in the ancestral
population. The lack of a formal test to distinguish these scenarios has
sparked recent controversy about the possibility of interbreeding between
Neandertals and modern humans in Eurasia. We derive the probability of
mutational configurations in non-recombining sequence blocks under alternative
histories of divergence with admixture and ancestral structure. Dividing the
genome into short blocks makes it possible to compute maximum likelihood
estimates of parameters under both models. We apply this method to triplets of
human Neandertal genomes and quantify the relative support for models of
long-term population structure in the ancestral African popuation and admixture
from Neandertals into Eurasian populations after their expansion out of Africa.
Our analysis allows us -- for the first time -- to formally reject a history of
ancestral population structure and instead reveals strong support for admixture
from Neandertals into Eurasian populations at a higher rate (3.4%-7.9%) than
suggested previously.
|
[{'version': 'v1', 'created': 'Wed, 31 Jul 2013 10:01:53 GMT'}]
|
2013-08-01
|
[array(['Lohse', 'Konrad', ''], dtype=object)
array(['Frantz', 'Laurent A. F.', ''], dtype=object)]
|
16,951 |
1808.04653
|
Hlynur Gretarsson Dr.
|
H. Gretarsson, S. M. Souliou, S. Jeong, J. Porras, T. Loew, M.
Bluschke, M. Minola, B. Keimer, and M. Le Tacon
|
Light-Induced Metastable State in Charge-Ordered YBa$_2$Cu$_3$O$_{6+x}$
|
8 pages and 5 figures. Manuscript to be published in Physical Review
B
|
Phys. Rev. B 98, 075134 (2018)
|
10.1103/PhysRevB.98.075134
| null |
cond-mat.supr-con
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We report temporal changes in Raman-scattering spectra of detwinned
YBa$_2$Cu$_3$O$_{6+x}$ single crystals under exposure to red laser light
polarized along the crystallographic $a$-axis. A recent publication by Bakr et
al. (Phys. Rev. B 88 214517 (2013)) identified new Raman-active modes that
appear upon cooling below $T \sim 200$ K, and attributed these modes to charge
ordering phenomena observed in x-ray scattering and nuclear magnetic resonance
experiments on the same materials. Here we report that the intensities of these
modes depend not only on temperature and oxygen content, but also on the
cumulative photon dose absorbed by the YBa$_2$Cu$_3$O$_{6+x}$ samples. The
light-induced changes in the Raman spectra exhibit a stretched-exponential time
dependence, with a characteristic time that increases strongly upon cooling.
They also depend strongly on doping and are most pronounced for $x \sim 0.6$.
In fully illuminated samples, the mode intensities exhibit a monotonic
temperature dependence indicative of a second-order phase transition. The
findings indicate a metastable state generated by light-induced rearrangement
of the oxygen dopants. We hypothesize that the new Raman phonons are associated
with a three-dimensional charge-ordered state induced by light illumination,
analogous to a state that was recently observed by resonant x-ray scattering in
oxygen-disordered YBa$_2$Cu$_3$O$_{6+x}$ films.
|
[{'version': 'v1', 'created': 'Tue, 14 Aug 2018 12:28:45 GMT'}]
|
2018-08-22
|
[array(['Gretarsson', 'H.', ''], dtype=object)
array(['Souliou', 'S. M.', ''], dtype=object)
array(['Jeong', 'S.', ''], dtype=object)
array(['Porras', 'J.', ''], dtype=object)
array(['Loew', 'T.', ''], dtype=object)
array(['Bluschke', 'M.', ''], dtype=object)
array(['Minola', 'M.', ''], dtype=object)
array(['Keimer', 'B.', ''], dtype=object)
array(['Tacon', 'M. Le', ''], dtype=object)]
|
16,952 |
2204.04287
|
Zehai Tu
|
Zehai Tu, Ning Ma, Jon Barker
|
Exploiting Hidden Representations from a DNN-based Speech Recogniser for
Speech Intelligibility Prediction in Hearing-impaired Listeners
|
Accepted to INTERSPEECH2022
| null | null | null |
eess.AS cs.SD q-bio.QM
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
An accurate objective speech intelligibility prediction algorithms is of
great interest for many applications such as speech enhancement for hearing
aids. Most algorithms measures the signal-to-noise ratios or correlations
between the acoustic features of clean reference signals and degraded signals.
However, these hand-picked acoustic features are usually not explicitly
correlated with recognition. Meanwhile, deep neural network (DNN) based
automatic speech recogniser (ASR) is approaching human performance in some
speech recognition tasks. This work leverages the hidden representations from
DNN-based ASR as features for speech intelligibility prediction in
hearing-impaired listeners. The experiments based on a hearing aid
intelligibility database show that the proposed method could make better
prediction than a widely used short-time objective intelligibility (STOI) based
binaural measure.
|
[{'version': 'v1', 'created': 'Fri, 8 Apr 2022 20:38:35 GMT'}
{'version': 'v2', 'created': 'Wed, 6 Jul 2022 13:59:50 GMT'}]
|
2022-07-07
|
[array(['Tu', 'Zehai', ''], dtype=object)
array(['Ma', 'Ning', ''], dtype=object)
array(['Barker', 'Jon', ''], dtype=object)]
|
16,953 |
2108.10848
|
Gopalan Nadathur
|
Gopalan Nadathur, Mary Southern
|
On Encoding LF in a Predicate Logic over Simply-Typed Lambda Terms
| null | null | null | null |
cs.LO cs.PL
|
http://creativecommons.org/licenses/by-nc-nd/4.0/
|
Felty and Miller have described what they claim to be a faithful encoding of
the dependently typed lambda calculus LF in the logic of hereditary Harrop
formulas, a sublogic of an intuitionistic variant of Church's Simple Theory of
Types. Their encoding is based roughly on translating object expressions in LF
into terms in a simply typed lambda calculus by erasing dependencies in typing
and then recapturing the erased dependencies through the use of predicates.
Unfortunately, this idea does not quite work. In particular, we provide a
counterexample to the claim that the described encoding is faithful. The
underlying reason for the falsity of the claim is that the mapping from
dependently typed lambda terms to simply typed ones is not one-to-one and hence
the inverse transformation is ambiguous. This observation has a broad
implication for other related encodings.
|
[{'version': 'v1', 'created': 'Tue, 24 Aug 2021 17:18:38 GMT'}]
|
2021-08-25
|
[array(['Nadathur', 'Gopalan', ''], dtype=object)
array(['Southern', 'Mary', ''], dtype=object)]
|
16,954 |
2104.12780
|
Florian Herren
|
Joshua Davies and Florian Herren
|
Higgs boson decay into photons at four loops
|
18 pages, 4 figures
|
Phys. Rev. D 104, 053010 (2021)
|
10.1103/PhysRevD.104.053010
|
FERMILAB-PUB-21-213-T, TTP21-010, P3H-21-028
|
hep-ph
|
http://creativecommons.org/licenses/by/4.0/
|
Future precision measurements of Higgs boson decays will determine the
branching fraction for the decay into two photons with a precision at the one
percent level. To fully exploit such measurements, equally precise theoretical
predictions need to be available. To this end we compute four-loop QCD
corrections in the large top quark mass expansion to the Higgs boson--photon
form factor, which enter the two-photon decay width at
next-to-next-to-next-to-leading order. Furthermore we obtain corrections to the
two-photon decay width stemming from the emission of additional gluons, which
contribute for the first time at next-to-next-to-leading order. Finally, we
combine our results with other available perturbative corrections and estimate
the residual uncertainty due to missing higher-order contributions.
|
[{'version': 'v1', 'created': 'Mon, 26 Apr 2021 18:00:01 GMT'}]
|
2021-10-04
|
[array(['Davies', 'Joshua', ''], dtype=object)
array(['Herren', 'Florian', ''], dtype=object)]
|
16,955 |
1808.02347
|
Markus Scheucher
|
Markus Scheucher, J. L. Grenfell, F. Wunderlich, M. Godolt, F.
Schreier and H. Rauer
|
New Insights into Cosmic Ray induced Biosignature Chemistry in
Earth-like Atmospheres
|
Manuscript version after addressing all referee comments. Published
in ApJ
|
The Astrophysical Journal, 863(1), 2018
|
10.3847/1538-4357/aacf03
| null |
astro-ph.EP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
With the recent discoveries of terrestrial planets around active M-dwarfs,
destruction processes masking the possible presence of life are receiving
increased attention in the exoplanet community. We investigate potential
biosignatures of planets having Earth-like (N$_2$-O$_2$) atmospheres orbiting
in the habitable zone of the M-dwarf star AD Leo. These are bombarded by high
energetic particles which can create showers of secondary particles at the
surface. We apply our cloud-free 1D climate-chemistry model to study the
influence of key particle shower parameters and chemical efficiencies of NOx
and HOx production from cosmic rays. We determine the effect of stellar
radiation and cosmic rays upon atmospheric composition, temperature, and
spectral appearance. Despite strong stratospheric O$_3$ destruction by cosmic
rays, smog O$_3$ can significantly build up in the lower atmosphere of our
modeled planet around AD Leo related to low stellar UVB. N$_2$O abundances
decrease with increasing flaring energies but a sink reaction for N$_2$O with
excited oxygen becomes weaker, stabilizing its abundance. CH$_4$ is removed
mainly by Cl in the upper atmosphere for strong flaring cases and not via
hydroxyl as is otherwise usually the case. Cosmic rays weaken the role of
CH$_4$ in heating the middle atmosphere so that H$_2$O absorption becomes more
important. We additionally underline the importance of HNO$_3$ as a possible
marker for strong stellar particle showers. In a nutshell, uncertainty in NOx
and HOx production from cosmic rays significantly influences biosignature
abundances and spectral appearance.
|
[{'version': 'v1', 'created': 'Tue, 7 Aug 2018 13:16:40 GMT'}]
|
2018-08-08
|
[array(['Scheucher', 'Markus', ''], dtype=object)
array(['Grenfell', 'J. L.', ''], dtype=object)
array(['Wunderlich', 'F.', ''], dtype=object)
array(['Godolt', 'M.', ''], dtype=object)
array(['Schreier', 'F.', ''], dtype=object)
array(['Rauer', 'H.', ''], dtype=object)]
|
16,956 |
cond-mat/0302377
|
Kazuki Hasebe
|
K. Hasebe
|
SU(4) Coherent Effects to the Canted Antiferromagnetic Phase in Bilayer
Quantum Hall Systems at $\nu$=2
|
8 pages, 4 figures and 1 table
|
Phys.Lett. A319 (2003) 544-554
|
10.1016/j.physleta.2003.10.066
|
SOGANG-HEP 305/03
|
cond-mat.mes-hall cond-mat.str-el hep-th
| null |
In bilayer quantum Hall (BLQH) systems at $\nu$=2, three different kinds of
ground states are expected to be realized, i.e. a spin polarized phase (spin
phase), a pseudospin polarized phase (ppin phase) and a canted
antiferromagnetic phase (C-phase). An SU(4) scheme gives a powerful tool to
investigate BLQH systems which have not only the spin SU(2) but also the layer
(pseudospin) SU(2) degrees of freedom. In this paper, we discuss an origin of
the C-phase in the SU(4) context and investigate SU(4) coherent effects to it.
We show peculiar operators in the SU(4) group which do not exist in
SU$_{\text{spin}}$(2)$\otimes$SU$_{\text{ppin}}$(2) group play a key role to
its realization. It is also pointed out that not only spins but also
pseudospins are ``canted'' in the C-phase.
|
[{'version': 'v1', 'created': 'Wed, 19 Feb 2003 12:40:38 GMT'}
{'version': 'v2', 'created': 'Sat, 8 Nov 2003 08:20:12 GMT'}
{'version': 'v3', 'created': 'Sat, 29 Nov 2003 07:24:20 GMT'}]
|
2015-06-24
|
[array(['Hasebe', 'K.', ''], dtype=object)]
|
16,957 |
0902.1395
|
Roland Walter
|
R. Walter, N. Cabral
|
The hard X-ray view of bright infrared galaxies
|
6 pages, accepted for publication in Astronomy & Astropohysics
| null |
10.1051/0004-6361/200810882
| null |
astro-ph.HE astro-ph.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Aims. The synthesis of the cosmic X-ray background (CXB) requires a large
population of Compton-thick active galactic nuclei that have not been detected
so far. We probe whether bright infrared galaxies could harbor a population of
Compton-thick nuclei and if they could contribute significantly. Methods. We
analyzed 112 Msec of INTEGRAL observations obtained on 613 galaxies from the
IRAS Revised Bright Galaxy Sample. We derived the average hard X-ray (18-80
keV) emission of Seyfert and various non Seyfert galaxy subsamples to estimate
their relative contribution to the locally emitted CXB. Results. The Seyfert 1
& 2 are detected at hard X-rays. None of the other galaxy subsamples were
detected. ULIRGs are at least 5 times under-luminous at hard X-rays when
compared to Seyferts. The upper limit obtained for the average non Seyfert
galaxies is as low as 7E-13 erg/s cm2. On average, these galaxies do not
contain active nuclei brighter than 10E41 erg/s at hard X-rays. The total hard
X-ray flux detected from the sample is 4.9E-9 erg/s cm2 (about 1% of the CXB),
and 64% of this originates in absorbed active nuclei. Local non-Seyfert
galaxies contribute for less than 7% and do not harbor the Compton-thick nuclei
assumed to synthesize the locally emitted CXB.
|
[{'version': 'v1', 'created': 'Mon, 9 Feb 2009 10:05:54 GMT'}]
|
2009-11-13
|
[array(['Walter', 'R.', ''], dtype=object)
array(['Cabral', 'N.', ''], dtype=object)]
|
16,958 |
1407.4191
|
Anthony Horton PhD
|
Anthony Horton, Robert Content, Simon Ellis and Jon Lawrence
|
Photonic lantern behaviour and implications for instrument design
|
18 pages, 14 figures, presented at SPIE Advances in Optical and
Mechanical Technologies for Telescopes and Instrumentation 2014, to be
published in Proc. SPIE 9151
| null |
10.1117/12.2054570
| null |
astro-ph.IM
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Photonic lanterns are an important enabling technology for astrophotonics
with a wide range of potential applications including fibre Bragg grating OH
suppression, integrated photonic spectrographs and fibre scramblers for high
resolution spectroscopy. The behaviour of photonic lanterns differs in several
important respects from the conventional fibre systems more frequently used in
astronomical instruments and a detailed understanding of this behaviour is
required in order to make the most effective use of this promising technology.
To this end we have undertaken a laboratory study of photonic lanterns with the
aim of developing an empirical model for the mapping from input to output
illumination distributions. We have measured overall transmission and near
field output light distributions as a function of input angle of incidence for
photonic lanterns with between 19 and 61 cores. We present the results of this
work, highlight the key differences between photonic lanterns and conventional
fibres, and illustrate the implications for instrument design via a case study,
the design of the PRAXIS spectrograph. The empirical photonic lantern model was
incorporated into an end-to-end PRAXIS performance model which was used to
optimise the design parameters of the instrument. We describe the methods used
and the resulting conclusions. The details of photonic lantern behaviour proved
particularly important in selecting the optimum on sky field of view per fibre
and in modelling of the instrument thermal background.
|
[{'version': 'v1', 'created': 'Wed, 16 Jul 2014 03:28:28 GMT'}]
|
2015-06-22
|
[array(['Horton', 'Anthony', ''], dtype=object)
array(['Content', 'Robert', ''], dtype=object)
array(['Ellis', 'Simon', ''], dtype=object)
array(['Lawrence', 'Jon', ''], dtype=object)]
|
16,959 |
1503.02861
|
Yoshiaki Tsujimoto
|
Yoshiaki Tsujimoto, Yukihiro Sugiura, Makoto Ando, Daisuke Katsuse,
Rikizo Ikuta, Takashi Yamamoto, Masato Koashi, and Nobuyuki Imoto
|
Extracting an entangled photon pair from collectively decohered pairs at
a telecommunication wavelength
|
8 pages, 5 figures
|
Optics Express Vol. 23, Issue 10, pp. 13545-13553 (2015)
|
10.1364/OE.23.013545
| null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We experimentally demonstrated entanglement extraction scheme by using
photons at the telecommunication band for optical-fiber-based quantum
communications. We generated two pairs of non-degenerate polarization entangled
photons at 780~nm and 1551~nm by spontaneous parametric down-conversion and
distributed the two photons at 1551~nm through a collective phase damping
channel which gives the same amount of random phase shift on the two photons.
Through local operation and classical communication, we extracted an entangled
photon pair from two phase-disturbed photon pairs. An observed fidelity of the
extracted photon pair to a maximally entangled photon pair was 0.73 $\pm$ 0.07
which clearly shows the recovery of entanglement.
|
[{'version': 'v1', 'created': 'Tue, 10 Mar 2015 11:06:53 GMT'}]
|
2015-06-11
|
[array(['Tsujimoto', 'Yoshiaki', ''], dtype=object)
array(['Sugiura', 'Yukihiro', ''], dtype=object)
array(['Ando', 'Makoto', ''], dtype=object)
array(['Katsuse', 'Daisuke', ''], dtype=object)
array(['Ikuta', 'Rikizo', ''], dtype=object)
array(['Yamamoto', 'Takashi', ''], dtype=object)
array(['Koashi', 'Masato', ''], dtype=object)
array(['Imoto', 'Nobuyuki', ''], dtype=object)]
|
16,960 |
0705.3310
|
Germano D'Abramo
|
Germano D'Abramo, Barbara D'Abramo
|
Probabilita` e Paradosso (Probability and Paradox)
|
Plain LaTeX, 9 pages, one figure. Text in Italian
|
Il Giornale di Fisica, VOL. XLV, N.4, Ott.-Dic. 2004
|
10.1393/gdf/i2004-10019-1
| null |
math.HO
| null |
In this paper we present three simple applications of probability and
highlight and discuss their paradoxical flavour.
|
[{'version': 'v1', 'created': 'Wed, 23 May 2007 09:01:54 GMT'}]
|
2007-05-24
|
[array(["D'Abramo", 'Germano', ''], dtype=object)
array(["D'Abramo", 'Barbara', ''], dtype=object)]
|
16,961 |
1204.5886
|
Ville Suomala
|
De-Jun Feng and Antti K\"aenm\"aki and Ville Suomala
|
Local conical dimensions for measures
| null |
Math. Proc. Cambridge Philos. Soc., 154 (2013), no. 3, 465-479
|
10.1017/S0305004113000066
| null |
math.CA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study the decay of $\mu(B(x,r)\cap C)/\mu(B(x,r))$ as $r\downarrow 0$ for
different kinds of measures $\mu$ on $\R^n$ and various cones $C$ around $x$.
As an application, we provide sufficient conditions implying that the local
dimensions can be calculated via cones almost everywhere.
|
[{'version': 'v1', 'created': 'Thu, 26 Apr 2012 11:13:01 GMT'}]
|
2017-02-03
|
[array(['Feng', 'De-Jun', ''], dtype=object)
array(['Käenmäki', 'Antti', ''], dtype=object)
array(['Suomala', 'Ville', ''], dtype=object)]
|
16,962 |
1404.0022
|
Sam McDermott
|
Asher Berlin, Dan Hooper, and Samuel D. McDermott
|
Simplified Dark Matter Models for the Galactic Center Gamma-Ray Excess
|
36 pages (20 are appendices); v4: some minor corrections in formulas
in appendices, conclusions unchanged
|
Phys. Rev. D 89, 115022 (2014)
|
10.1103/PhysRevD.89.115022
|
FERMILAB-PUB-14-060-A, MCTP-14-07
|
hep-ph astro-ph.CO astro-ph.HE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Motivated by the gamma-ray excess observed from the region surrounding the
Galactic Center, we explore particle dark matter models that could potentially
account for the spectrum and normalization of this signal. Taking a
model-independent approach, we consider an exhaustive list of tree-level
diagrams for dark matter annihilation, and determine which could account for
the observed gamma-ray emission while simultaneously predicting a thermal relic
abundance equal to the measured cosmological dark matter density. We identify a
wide variety of models that can meet these criteria without conflicting with
existing constraints from direct detection experiments or the Large Hadron
Collider (LHC). The prospects for detection in near future dark matter
experiments and/or the upcoming 14 TeV LHC appear quite promising.
|
[{'version': 'v1', 'created': 'Mon, 31 Mar 2014 20:05:44 GMT'}
{'version': 'v2', 'created': 'Thu, 24 Apr 2014 01:37:41 GMT'}
{'version': 'v3', 'created': 'Wed, 4 Jun 2014 19:36:09 GMT'}
{'version': 'v4', 'created': 'Tue, 2 Jun 2015 20:32:35 GMT'}]
|
2015-06-04
|
[array(['Berlin', 'Asher', ''], dtype=object)
array(['Hooper', 'Dan', ''], dtype=object)
array(['McDermott', 'Samuel D.', ''], dtype=object)]
|
16,963 |
1312.3428
|
Kazuki Shibata
|
Kazuki Shibata
|
Toric ideals of series and parallel connections of matroids
|
10 pages
|
Journal of Algebra and Its Applications, 15 (2016), no. 6,
1650106, 11 pages
|
10.1142/S0219498816501061
| null |
math.CO math.AC
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In 1980, White conjectured that the toric ideal associated to a matroid is
generated by binomials corresponding to a symmetric exchange. In this paper, we
prove that classes of matroids for which the toric ideal is generated by
quadrics and that has quadratic Gr\"obner bases, are closed under series and
parallel extensions, series and parallel connections, and 2-sums.
|
[{'version': 'v1', 'created': 'Thu, 12 Dec 2013 09:59:07 GMT'}
{'version': 'v2', 'created': 'Sat, 4 Apr 2015 07:15:10 GMT'}
{'version': 'v3', 'created': 'Sat, 20 Jun 2015 06:45:09 GMT'}]
|
2019-07-22
|
[array(['Shibata', 'Kazuki', ''], dtype=object)]
|
16,964 |
1211.4037
|
Steven Frank
|
Steven A. Frank
|
Natural selection. V. How to read the fundamental equations of
evolutionary change in terms of information theory
| null |
Frank, S. A. 2012. Natural selection. V. How to read the
fundamental equations of evolutionary change in terms of information theory.
Journal of Evolutionary Biology 25:2377-2396
|
10.1111/jeb.12010
| null |
q-bio.PE cond-mat.stat-mech
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The equations of evolutionary change by natural selection are commonly
expressed in statistical terms. Fisher's fundamental theorem emphasizes the
variance in fitness. Quantitative genetics expresses selection with covariances
and regressions. Population genetic equations depend on genetic variances. How
can we read those statistical expressions with respect to the meaning of
natural selection? One possibility is to relate the statistical expressions to
the amount of information that populations accumulate by selection. However,
the connection between selection and information theory has never been
compelling. Here, I show the correct relations between statistical expressions
for selection and information theory expressions for selection. Those relations
link selection to the fundamental concepts of entropy and information in the
theories of physics, statistics, and communication. We can now read the
equations of selection in terms of their natural meaning. Selection causes
populations to accumulate information about the environment.
|
[{'version': 'v1', 'created': 'Fri, 16 Nov 2012 21:13:31 GMT'}]
|
2012-11-20
|
[array(['Frank', 'Steven A.', ''], dtype=object)]
|
16,965 |
1606.03477
|
Nestor Quintero
|
Nestor Quintero
|
Constraints on lepton number violating short-range interactions from
$|\Delta L|=2$ processes
|
8 pages, 1 figure. v3: references added, discussion extended, section
IV included, conclusions unchanged, matches with version published in Phys.
Lett. B
| null |
10.1016/j.physletb.2016.10.056
| null |
hep-ph hep-ex
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this work we study the short-range contributions that induce effective
lepton number violating (LNV) interactions. We obtain a full set of constraints
on the effective short-range couplings from a large variety of low-energy
$|\Delta L|= 2$ processes of pseudoscalar mesons $K, D, D_s, B$, and
$\tau$-lepton. These constraints provide complementary and additional
information to the one obtained from the neutrinoless double-$\beta$
($0\nu\beta\beta$) decay. As expected, the bounds on electron-electron
short-range couplings are the only ones that are strongly constrained by the
$0\nu\beta\beta$ decay. Although weaker, LNV effective couplings with different
flavours are not accessible to $0\nu\beta\beta$ decay and these can be probe by
the $|\Delta L|= 2$ processes in consideration.
|
[{'version': 'v1', 'created': 'Fri, 10 Jun 2016 20:56:21 GMT'}
{'version': 'v2', 'created': 'Sun, 19 Jun 2016 23:50:52 GMT'}
{'version': 'v3', 'created': 'Thu, 3 Nov 2016 23:22:13 GMT'}]
|
2016-11-07
|
[array(['Quintero', 'Nestor', ''], dtype=object)]
|
16,966 |
1304.0050
|
John Lenz
|
Peter Keevash, John Lenz, Dhruv Mubayi
|
Spectral extremal problems for hypergraphs
|
20 pages
| null | null | null |
math.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper we consider spectral extremal problems for hypergraphs. We give
two general criteria under which such results may be deduced from `strong
stability' forms of the corresponding (pure) extremal results. These results
hold for the \alpha-spectral radius defined using the \alpha-norm for any
\alpha>1; the usual spectrum is the case \alpha=2.
Our results imply that any hypergraph Tur\'{a}n problem which has the
stability property and whose extremal construction satisfies some rather mild
continuity assumptions admits a corresponding spectral result. A particular
example is to determine the maximum \alpha-spectral radius of any 3-uniform
hypergraph on n vertices not containing the Fano plane, when n is sufficiently
large. Another is to determine the maximum \alpha-spectral radius of any graph
on n vertices not containing some fixed colour-critical graph, when n is
sufficiently large; this generalizes a theorem of Nikiforov who proved stronger
results in the case \alpha=2. We also obtain an \alpha-spectral version of the
Erd\H{o}s-Ko-Rado theorem on t-intersecting k-uniform hypergraphs.
|
[{'version': 'v1', 'created': 'Sat, 30 Mar 2013 00:25:21 GMT'}
{'version': 'v2', 'created': 'Wed, 5 Mar 2014 22:35:23 GMT'}]
|
2014-03-07
|
[array(['Keevash', 'Peter', ''], dtype=object)
array(['Lenz', 'John', ''], dtype=object)
array(['Mubayi', 'Dhruv', ''], dtype=object)]
|
16,967 |
2104.09112
|
Chenwei Shi
|
Chenwei Shi and Yiyang Wang
|
Pareto Optimality, Functional Dependence and Collective Agency
| null | null | null | null |
econ.TH
|
http://creativecommons.org/licenses/by-nc-nd/4.0/
|
This paper approaches the problem of understanding collective agency from a
logical and game-theoretical perspective. Instead of collective intentionality,
our analysis highlights the role of Pareto optimality. To facilitate the
analysis, we propose a logic of preference and functional dependence by
extending the logic of functional dependence. In this logic, we can express
Pareto optimality and thus reason about collective agency.
|
[{'version': 'v1', 'created': 'Mon, 19 Apr 2021 08:10:15 GMT'}]
|
2021-04-20
|
[array(['Shi', 'Chenwei', ''], dtype=object)
array(['Wang', 'Yiyang', ''], dtype=object)]
|
16,968 |
2105.12679
|
Vincenzo Mantova
|
Vahagn Aslanyan, Jonathan Kirby, Vincenzo Mantova
|
A geometric approach to some systems of exponential equations
|
34 pages; new remarks 4.10, 5.8, and minor clarifications
| null |
10.1093/imrn/rnab340
| null |
math.CV math.LO math.NT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Zilber's Exponential Algebraic Closedness conjecture (also known as Zilber's
Nullstellensatz) gives conditions under which a complex algebraic variety
should intersect the graph of the exponential map of a semiabelian variety.
We prove the special case of the conjecture where the variety has dominant
projection to the domain of the exponential map, for abelian varieties and for
algebraic tori. Furthermore, in the situation where the intersection is
0-dimensional, we exhibit structure in the intersection by parametrizing the
sufficiently large points as the images of the period lattice under a
(multivalued) analytic map. Our approach is complex geometric, in contrast to a
real analytic proof given by Brownawell and Masser just for the case of
algebraic tori.
|
[{'version': 'v1', 'created': 'Wed, 26 May 2021 16:46:08 GMT'}
{'version': 'v2', 'created': 'Tue, 28 Sep 2021 18:25:20 GMT'}]
|
2022-04-01
|
[array(['Aslanyan', 'Vahagn', ''], dtype=object)
array(['Kirby', 'Jonathan', ''], dtype=object)
array(['Mantova', 'Vincenzo', ''], dtype=object)]
|
16,969 |
0807.1933
|
Andr\'e-Marie Tremblay
|
S\'ebastien Roy and A.-M.S. Tremblay
|
Scaling and commensurate-incommensurate crossover for the d=2, z=2
quantum critical point of itinerant antiferromagnets
|
Unchanged numerical results. It is now shown analytically that the
approach includes logarithmic corrections and that the critical behavior is
equivalent to the theory of Moriya. 6 pages, 3 figures, LateX
|
EuroPhys. Lett. 84, 37013 (2008)
|
10.1209/0295-5075/84/37013
| null |
cond-mat.str-el cond-mat.stat-mech
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Quantum critical points exist at zero temperature, yet, experimentally their
influence seems to extend over a large part of the phase diagram of systems
such as heavy-fermion compounds and high-temperature superconductors.
Theoretically, however, it is generally not known over what range of parameters
the physics is governed by the quantum critical point. We answer this question
for the spin-density wave to fermi-liquid quantum critical point in the
two-dimensional Hubbard model. This problem is in the $d=2,z=2$ universality
class. We use the Two-Particle Self-Consistent approach, which is accurate from
weak to intermediate coupling, and whose critical behavior is the same as for
the self-consistent-renormalized approach of Moriya. Despite the presence of
logarithmic corrections, numerical results demonstrate that quantum critical
scaling for the static magnetic susceptibility can extend up to very high
temperatures but that the commensurate to incommensurate crossover leads to
deviations to scaling.
|
[{'version': 'v1', 'created': 'Sat, 12 Jul 2008 14:47:00 GMT'}
{'version': 'v2', 'created': 'Mon, 3 Nov 2008 21:05:46 GMT'}]
|
2008-11-03
|
[array(['Roy', 'Sébastien', ''], dtype=object)
array(['Tremblay', 'A. -M. S.', ''], dtype=object)]
|
16,970 |
1410.7354
|
Martin M\"ohle
|
Martin M\"ohle
|
The Mittag-Leffler process and a scaling limit for the block counting
process of the Bolthausen-Sznitman coalescent
|
17 pages
| null | null | null |
math.PR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The Mittag-Leffler process $X=(X_t)_{t\ge 0}$ is introduced. This Markov
process has the property that its marginal random variables $X_t$ are
Mittag-Leffler distributed with parameter $e^{-t}$, $t\in [0,\infty)$, and the
semigroup $(T_t)_{t\ge 0}$ of $X$ satisfies $T_tf(x)={\mathbb
E}(f(x^{e^{-t}}X_t))$ for all $x\ge 0$ and all bounded measurable functions
$f:[0,\infty)\to{\mathbb R}$. Further characteristics of the process $X$ are
derived, for example an explicit formula for the joint moments of its finite
dimensional distributions. The main result states that the block counting
process of the Bolthausen-Sznitman $n$-coalescent, properly scaled, converges
in the Skorohod topology to the Mittag-Leffler process $X$ as the sample size
$n$ tends to infinity.
|
[{'version': 'v1', 'created': 'Mon, 27 Oct 2014 19:03:17 GMT'}]
|
2014-10-28
|
[array(['Möhle', 'Martin', ''], dtype=object)]
|
16,971 |
1610.02198
|
Bertrand Roehner
|
Peter Richmond, Bertrand M. Roehner
|
Phenomenology of infant death rates. Identification of the peaks of
viral and bacterial diseases
|
13 pages, 6 figures
| null | null | null |
physics.med-ph q-bio.PE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
After birth setting up an effective immune system is a major challenge for
all living organisms. In this paper we show that this process can be explored
by using the age-specific infant death rate as a kind of sensor. This is made
possible because, as shown by the authors in Berrut et al. (2016), between
birth and a critical age t_c, for all mammals the death rate decreases with age
as an hyperbolic function. For humans t_c is equal to 10 years. At some ages
the hyperbolic fall displays spikes which, it is assumed, correspond to
specific events in the organism's response to exogenous factors. One of these
spikes occurs 10 days after birth and there is another at the age of about 300
days. It is shown that the first spike is related to viral infections whereas
the second is related to bacterial diseases. By going back to former time
periods during which infant mortality was much higher than currently, it is
possible to get a magnified view of these peaks which in turn may give us
useful information about how an organism adapts to new conditions. Apart from
pathogens, the same methodology can be used to study the response to changes in
other external conditions, e.g. supply of food, temperature or oxygen level.
|
[{'version': 'v1', 'created': 'Fri, 7 Oct 2016 09:24:30 GMT'}]
|
2016-10-10
|
[array(['Richmond', 'Peter', ''], dtype=object)
array(['Roehner', 'Bertrand M.', ''], dtype=object)]
|
16,972 |
1609.00864
|
Paul Van den Hof
|
Harm H.M. Weerts, Paul M.J. Van den Hof and Arne G. Dankers
|
Identifiability of linear dynamic networks
|
Provisionally accepted for publication in Automatica
|
Automatica, Vol. 89, pp. 247-258, 2018
|
10.1016/j.automatica.2017.12.013
| null |
cs.SY
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Dynamic networks are structured interconnections of dynamical systems
(modules) driven by external excitation and disturbance signals. In order to
identify their dynamical properties and/or their topology consistently from
measured data, we need to make sure that the network model set is identifiable.
We introduce the notion of network identifiability, as a property of a
parameterized model set, that ensures that different network models can be
distinguished from each other when performing identification on the basis of
measured data. Different from the classical notion of (parameter)
identifiability, we focus on the distinction between network models in terms of
their transfer functions. For a given structured model set with a pre-chosen
topology, identifiability typically requires conditions on the presence and
location of excitation signals, and on presence, location and correlation of
disturbance signals. Because in a dynamic network, disturbances cannot always
be considered to be of full-rank, the reduced-rank situation is also covered,
meaning that the number of driving white noise processes can be strictly less
than the number of disturbance variables. This includes the situation of having
noise-free nodes.
|
[{'version': 'v1', 'created': 'Sat, 3 Sep 2016 21:16:36 GMT'}
{'version': 'v2', 'created': 'Mon, 20 Feb 2017 15:03:18 GMT'}
{'version': 'v3', 'created': 'Thu, 29 Jun 2017 15:24:36 GMT'}
{'version': 'v4', 'created': 'Tue, 24 Oct 2017 16:08:19 GMT'}]
|
2018-04-12
|
[array(['Weerts', 'Harm H. M.', ''], dtype=object)
array(['Hof', 'Paul M. J. Van den', ''], dtype=object)
array(['Dankers', 'Arne G.', ''], dtype=object)]
|
16,973 |
1501.05541
|
Jannik Meyer
|
G. Argentero, C. Mangler, J. Kotakoski, F. R. Eder, J. C. Meyer
|
Towards weighing individual atoms by high-angle scattering of electrons
|
19 pages, 6 figures
|
Ultramicroscopy 151, 23-30 (2015)
|
10.1016/j.ultramic.2014.11.031
| null |
physics.ins-det
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider theoretically the energy loss of electrons scattered to high
angles when assuming that the primary beam can be limited to a single atom. We
discuss the possibility of identifying the isotopes of light elements and of
extracting information about phonons in this signal. The energy loss is related
to the mass of the much heavier nucleus, and is spread out due to atomic
vibrations. Importantly, while the width of the broadening is much larger than
the energy separation of isotopes, only the shift in the peak positions must be
detected if the beam is limited to a single atom. We conclude that the
experimental case will be challenging but is not excluded by the physical
principles as far as considered here. Moreover, the initial experiments
demonstrate the separation of gold and carbon based on a signal that is related
to their mass, rather than their atomic number.
|
[{'version': 'v1', 'created': 'Thu, 22 Jan 2015 15:51:00 GMT'}]
|
2015-05-06
|
[array(['Argentero', 'G.', ''], dtype=object)
array(['Mangler', 'C.', ''], dtype=object)
array(['Kotakoski', 'J.', ''], dtype=object)
array(['Eder', 'F. R.', ''], dtype=object)
array(['Meyer', 'J. C.', ''], dtype=object)]
|
16,974 |
2110.01697
|
Alain Zemkoho
|
Qingna Li, Zhen Li, and Alain Zemkoho
|
Bilevel hyperparameter optimization for support vector classification:
theoretical analysis and a solution method
|
35 pages, 11 figures
| null | null | null |
math.OC
|
http://creativecommons.org/licenses/by/4.0/
|
Support vector classification (SVC) is a classical and well-performed
learning method for classification problems. A regularization parameter, which
significantly affects the classification performance, has to be chosen and this
is usually done by the cross-validation procedure. In this paper, we
reformulate the hyperparameter selection problem for support vector
classification as a bilevel optimization problem in which the upper-level
problem minimizes the average number of misclassified data points over all the
cross-validation folds, and the lower-level problems are the l1-loss SVC
problems, with each one for each fold in T-fold cross-validation. The resulting
bilevel optimization model is then converted to a mathematical program with
equilibrium constraints (MPEC). To solve this MPEC, we propose a global
relaxation cross-validation algorithm (GR-CV) based on the well-know
Sholtes-type global relaxation method (GRM). It is proven to converge to a
C-stationary point. Moreover, we prove that the MPEC-tailored version of the
Mangasarian-Fromovitz constraint qualification (MFCQ), which is a key property
to guarantee the convergence of the GRM, automatically holds at each feasible
point of this MPEC. Extensive numerical results verify the efficiency of the
proposed approach. In particular, compared with other methods, our algorithm
enjoys superior generalization performance over almost all the data sets used
in this paper.
|
[{'version': 'v1', 'created': 'Mon, 4 Oct 2021 20:12:27 GMT'}]
|
2021-10-06
|
[array(['Li', 'Qingna', ''], dtype=object)
array(['Li', 'Zhen', ''], dtype=object)
array(['Zemkoho', 'Alain', ''], dtype=object)]
|
16,975 |
1005.1511
|
Steven Hailey-Dunsheath
|
E. Sturm, A. Verma, J. Graci\'a-Carpio, S. Hailey-Dunsheath, A.
Contursi, J. Fischer, E. Gonz\'alez-Alfonso, A. Poglitsch, A. Sternberg, R.
Genzel, D. Lutz, L. Tacconi, N. Christopher, J. de Jong
|
Herschel-PACS spectroscopy of IR-bright galaxies at high redshift
|
5 pages, 4 figures, accepted by A&A Letters
| null |
10.1051/0004-6361/201014560
| null |
astro-ph.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present Herschel-PACS observations of rest-frame mid-infrared and
far-infrared spectral line emissions from two lensed, ultra-luminous infrared
galaxies at high redshift: MIPS J142824.0+352619 (MIPS J1428), a
starburst-dominated system at z = 1.3, and IRAS F10214+4724 (F10214), a source
at z = 2.3 hosting both star-formation and a luminous AGN. We have detected
[OI]63 micron and [OIII]52 micron in MIPS J1428, and tentatively [OIII]52
micron in F10214. Together with the recent ZEUS-CSO [CII]158 micron detection
in MIPS J1428 we can for the first time combine [OI], [CII] and far-IR (FIR)
continuum measurements for photo-dissociation (PDR) modeling of an
ultra-luminous (L_IR > 10^12 L_sun) star forming galaxy at the peak epoch of
cosmic star formation. We find that MIPS J1428, contrary to average local
ULIRGs, does not show a deficit in [OI] relative to FIR. The combination of
far-UV flux G_0 and gas density n (derived from the PDR models), as well as the
star formation efficiency (derived from CO and FIR) is similar to normal or
starburst galaxies, despite the high infrared luminosity of this system. In
contrast, F10214 has stringent upper limits on [OIV] and [SIII], and an
[OIII]/FIR ratio at least an order of magnitude lower than local starbursts or
AGN, similar to local ULIRGs.
|
[{'version': 'v1', 'created': 'Mon, 10 May 2010 12:07:07 GMT'}
{'version': 'v2', 'created': 'Mon, 17 May 2010 07:56:59 GMT'}]
|
2015-05-18
|
[array(['Sturm', 'E.', ''], dtype=object)
array(['Verma', 'A.', ''], dtype=object)
array(['Graciá-Carpio', 'J.', ''], dtype=object)
array(['Hailey-Dunsheath', 'S.', ''], dtype=object)
array(['Contursi', 'A.', ''], dtype=object)
array(['Fischer', 'J.', ''], dtype=object)
array(['González-Alfonso', 'E.', ''], dtype=object)
array(['Poglitsch', 'A.', ''], dtype=object)
array(['Sternberg', 'A.', ''], dtype=object)
array(['Genzel', 'R.', ''], dtype=object)
array(['Lutz', 'D.', ''], dtype=object)
array(['Tacconi', 'L.', ''], dtype=object)
array(['Christopher', 'N.', ''], dtype=object)
array(['de Jong', 'J.', ''], dtype=object)]
|
16,976 |
1605.09076
|
Jae Woo Lee
|
Jae Woo Lee, Kyeongsoo Hong, Seung-Lee Kim, and Jae-Rim Koo
|
KIC 6220497: A New Algol-type Eclipsing Binary with Multiperiodic
Pulsations
|
15 pages, including 8 figures and 2 tables, accepted for publication
in MNRAS
| null |
10.1093/mnras/stw1308
| null |
astro-ph.SR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present both binarity and pulsation of KIC 6220497 from the {\it Kepler}
observations. The light curve synthesis shows that the eclipsing system is a
semi-detached Algol with parameters of $q$ = 0.243$\pm$0.001, $i$ =
77.3$\pm$0.3 deg, and $\Delta T$ = 3,372$\pm$58 K, in which the detached
primary component fills its Roche lobe by $\sim$87\%. A multiple frequency
analysis of the eclipse-subtracted light residuals reveals 33 frequencies in
the range of 0.75$-$20.22 d$^{-1}$ with amplitudes between 0.27 and 4.56 mmag.
Among these, four are pulsation frequencies in fundamental ($f_1$, $f_5$) and
$p$ ($f_2$, $f_7$) modes, and six are orbital frequency ($f_8$, $f_{31}$) and
its harmonics ($f_6$, $f_{11}$, $f_{20}$, $f_{24}$), which can be attributed to
tidally excited modes. For the pulsation frequencies, the pulsation constants
of 0.16$-$0.33 d and the period ratios of $P_{\rm pul}/P_{\rm orb}$ =
0.042$-$0.089 indicate that the primary component is a $\delta$ Sct pulsating
star and, thus, KIC 6220497 is an oscillating eclipsing Algol (oEA) star. The
dominant pulsation period of 0.1174051$\pm$0.0000004 d is significantly longer
than that expected from empirical relations that link the pulsation period with
the orbital period. The surface gravity of $\log g_1$ = 3.78$\pm$0.03 is
clearly smaller than those of the other oEA stars with similar orbital periods.
The pulsation period and the surface gravity of the pulsating primary
demonstrate that KIC 6220497 would be the more evolved EB, compared with normal
oEA stars.
|
[{'version': 'v1', 'created': 'Sun, 29 May 2016 23:41:55 GMT'}]
|
2016-06-15
|
[array(['Lee', 'Jae Woo', ''], dtype=object)
array(['Hong', 'Kyeongsoo', ''], dtype=object)
array(['Kim', 'Seung-Lee', ''], dtype=object)
array(['Koo', 'Jae-Rim', ''], dtype=object)]
|
16,977 |
1705.02377
|
David Nualart
|
Denis Bell and David Nualart
|
Noncentral limit theorem for the generalized Rosenblatt process
| null | null | null | null |
math.PR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We use techniques of Malliavin calculus to study the convergence in law of a
family of generalized Rosenblatt processes $Z_\gamma$ with kernels defined by
parameters $\gamma$ taking values in a tetrahedral region $\Delta$ of $\RR^q$.
We prove that, as $\gamma$ converges to a face of $\Delta$, the process
$Z_\gamma$ converges to a compound Gaussian distribution with random variance
given by the square of a Rosenblatt process of one lower rank. The convergence
in law is shown to be stable. This work generalizes a previous result of Bai
and Taqqu, who proved the result in the case $q=2$ and without stability.
|
[{'version': 'v1', 'created': 'Fri, 5 May 2017 19:36:30 GMT'}]
|
2017-05-09
|
[array(['Bell', 'Denis', ''], dtype=object)
array(['Nualart', 'David', ''], dtype=object)]
|
16,978 |
2202.00510
|
Federico Laudisa
|
Federico Laudisa
|
The Information-Theoretic View of Quantum Mechanics and the Measurement
Problem(s)
| null | null | null | null |
quant-ph physics.hist-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Until recently Jeffrey Bub and Itamar Pitowsky, in the framework of an
information theoretic view of quantum mechanics, claimed first that to the
measurement problem in its ordinary formulation there correspond in effect two
measurement problems (simply called the big and the small measurement
problems), with a different degree of relevance and, second, that the analysis
of a quantum measurement is a problem only if other assumptions, taken by
Pitowsky and Bub to be unnecessary 'dogmas', are assumed. Here I critically
discuss this unconventional stance on the measurement problem and argue that
the Bub and Pitowsky arguments are inconclusive, mainly because they rely on an
unwarranted extension to the quantum realm of a distinction concerning the
foundations of special relativity which is in itself rather controversial.
|
[{'version': 'v1', 'created': 'Tue, 1 Feb 2022 16:06:53 GMT'}]
|
2022-02-02
|
[array(['Laudisa', 'Federico', ''], dtype=object)]
|
16,979 |
2205.08542
|
Hansveer Singh
|
Hansveer Singh, Romain Vasseur, Sarang Gopalakrishnan
|
The Fredkin staircase: An integrable system with a finite-frequency
Drude peak
|
4.5 pages, 3 figures plus 9 pages supplemental material
|
Phys. Rev. Lett. 130, 046001 (2023)
|
10.1103/PhysRevLett.130.046001
| null |
cond-mat.stat-mech cond-mat.str-el nlin.SI quant-ph
|
http://creativecommons.org/licenses/by/4.0/
|
We introduce and explore an interacting integrable cellular automaton, the
Fredkin staircase, that lies outside the existing classification of such
automata, and has a structure that seems to lie beyond that of any existing
Bethe-solvable model. The Fredkin staircase has two families of ballistically
propagating quasiparticles, each with infinitely many species. Despite the
presence of ballistic quasiparticles, charge transport is diffusive in the d.c.
limit, albeit with a highly non-gaussian dynamic structure factor. Remarkably,
this model exhibits persistent temporal oscillations of the current, leading to
a delta-function singularity (Drude peak) in the a.c. conductivity at nonzero
frequency. We analytically construct an extensive set of operators that
anticommute with the time-evolution operator; the existence of these operators
both demonstrates the integrability of the model and allows us to lower-bound
the weight of this finite-frequency singularity.
|
[{'version': 'v1', 'created': 'Tue, 17 May 2022 18:00:00 GMT'}]
|
2023-01-30
|
[array(['Singh', 'Hansveer', ''], dtype=object)
array(['Vasseur', 'Romain', ''], dtype=object)
array(['Gopalakrishnan', 'Sarang', ''], dtype=object)]
|
16,980 |
2209.02162
|
Heather Crawford
|
H. L. Crawford, M. D. Jones, A. O. Macchiavelli, P. Fallon, D. Bazin,
P. C. Bender, B. A. Brown, C. M. Campbell, R. M. Clark, M. Cromaz, B. Elman,
A. Gade, J. D. Holt, R. V. F. Janssens, I. Y. Lee, B. Longfellow, S.
Paschalis, M. Petri, A. L. Richard, M. Salathe, J. A. Tostevin and D.
Weisshaar
|
The Core of $^{25}$F studied by the $^{25}$F(-1p)$^{24}$O reaction
|
6 pages, 2 figures
| null | null | null |
nucl-ex nucl-th
|
http://creativecommons.org/licenses/by/4.0/
|
The $^{25}$F($5/2^+) (-1p) ^{24}$O reaction was studied at the NSCL using the
S800 spectrometer. The experimental spectroscopic factor for the ground-state
to ground-state transition indicates a substantial depletion of the proton
$d_{5/2}$ strength compared to shell-model expectations. Our result supports
the findings reported by Tang \textit{et al.}, from their study of the $(p,2p)$
reaction at RIBF. The overlap between the $^{25}$F and $^{24}$O ground-states
is considerably less than anticipated if $^{24}$O acted as a robust and rigid
doubly-magic core in $^{25}$F. We interpret the results within the framework of
the Particle-Vibration Coupling (PVC) of a $d_{5/2}$ proton coupled to a
quadrupole phonon of an effective core. This approach provides a good
description of the experimental data by requiring an effective $^{24}$O* core
with a phonon energy of $\hbar\omega_2$= 3.2 MeV, and a $B(E2) ~ 2.7$ W.u.,
softer and more collective than a bare $^{24}$O. Both the Nilsson deformed mean
field and the PVC models appear to capture the properties of the effective core
of $^{25}$F, suggesting that the additional proton tends to polarize the free,
doubly magic $^{24}$O in such a way that it becomes either slightly deformed or
a quadrupole vibrator.
|
[{'version': 'v1', 'created': 'Mon, 5 Sep 2022 23:11:37 GMT'}
{'version': 'v2', 'created': 'Thu, 8 Sep 2022 02:58:13 GMT'}]
|
2022-09-09
|
[array(['Crawford', 'H. L.', ''], dtype=object)
array(['Jones', 'M. D.', ''], dtype=object)
array(['Macchiavelli', 'A. O.', ''], dtype=object)
array(['Fallon', 'P.', ''], dtype=object)
array(['Bazin', 'D.', ''], dtype=object)
array(['Bender', 'P. C.', ''], dtype=object)
array(['Brown', 'B. A.', ''], dtype=object)
array(['Campbell', 'C. M.', ''], dtype=object)
array(['Clark', 'R. M.', ''], dtype=object)
array(['Cromaz', 'M.', ''], dtype=object)
array(['Elman', 'B.', ''], dtype=object)
array(['Gade', 'A.', ''], dtype=object)
array(['Holt', 'J. D.', ''], dtype=object)
array(['Janssens', 'R. V. F.', ''], dtype=object)
array(['Lee', 'I. Y.', ''], dtype=object)
array(['Longfellow', 'B.', ''], dtype=object)
array(['Paschalis', 'S.', ''], dtype=object)
array(['Petri', 'M.', ''], dtype=object)
array(['Richard', 'A. L.', ''], dtype=object)
array(['Salathe', 'M.', ''], dtype=object)
array(['Tostevin', 'J. A.', ''], dtype=object)
array(['Weisshaar', 'D.', ''], dtype=object)]
|
16,981 |
cond-mat/0104063
|
Philip W. Adams
|
D.P. Young, P.W. Adams, J.Y. Chan, and F.R. Fronczek
|
Structure and Superconducting Properties of "BeB_2"
|
submitted to PRL
| null |
10.1103/PhysRevB.65.180518
| null |
cond-mat.supr-con cond-mat.mtrl-sci
| null |
We present the crystal structure and low temperature electronic transport
properties of the intermetallic commonly known as BeB_2. In contrast to the
much simpler AlB_2-type structure of the 39K superconductor MgB_2, BeB_2 forms
a complex structure type that is nearly unique in nature. The structure has
110.5 atoms per unit cell and a stoichiometry BeB_{2.75}. Polycrystalline
Be(^{10.8}B)_{2.75} is superconducting below T_c=0.72K with a critical magnetic
field H_{c2}=0.175T. Isotopically pure ^{10.0}B samples of have an
enhanced$T_c=0.79K, consistent with a BCS isotope effect. Hall effect
measurements suggest that the material is intrinsically compensated.
|
[{'version': 'v1', 'created': 'Tue, 3 Apr 2001 22:34:25 GMT'}
{'version': 'v2', 'created': 'Tue, 3 Apr 2001 23:32:18 GMT'}
{'version': 'v3', 'created': 'Thu, 5 Apr 2001 15:56:11 GMT'}
{'version': 'v4', 'created': 'Fri, 6 Apr 2001 13:53:02 GMT'}]
|
2009-11-07
|
[array(['Young', 'D. P.', ''], dtype=object)
array(['Adams', 'P. W.', ''], dtype=object)
array(['Chan', 'J. Y.', ''], dtype=object)
array(['Fronczek', 'F. R.', ''], dtype=object)]
|
16,982 |
1011.4481
|
Deepa Kasinathan
|
H. S. Jeevan, Deepa Kasinathan, Helge Rosner, Philip Gegenwart
|
Interplay of antiferromagnetism, ferromagnetism and superconductivity in
EuFe_2(As_1-xP_x)_2 single crystals
|
6 pages, 5 figures, 1 table
|
Phys. Rev. B, vol. 83, 054511, 2011
|
10.1103/PhysRevB.83.054511
| null |
cond-mat.supr-con cond-mat.str-el
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We report a systematic study on the influence of antiferromagnetic and
ferromagnetic phases of Eu^2+ moments on the superconducting phase upon doping
the As site by isovalent P, which acts as chemical pressure on EuFe_2As_2. Bulk
superconductivity with transition temperatures of 22 K and 28 K are observed
for x=0.16 and 0.20 samples respectively. The Eu ions order
antiferromagnetically for x<=0.13, while a crossover is observed for x>=0.22
whereupon the Eu ions order ferromagnetically. Density functional theory based
calculations reproduce the observed experimental findings consistently. We
discuss in detail the coexistence of superconductivity and magnetism in a tiny
region of the phase space and comment on the competition of ferromagnetism and
superconductivity in the title compound.
|
[{'version': 'v1', 'created': 'Fri, 19 Nov 2010 17:43:19 GMT'}
{'version': 'v2', 'created': 'Wed, 8 Dec 2010 11:44:16 GMT'}]
|
2012-01-10
|
[array(['Jeevan', 'H. S.', ''], dtype=object)
array(['Kasinathan', 'Deepa', ''], dtype=object)
array(['Rosner', 'Helge', ''], dtype=object)
array(['Gegenwart', 'Philip', ''], dtype=object)]
|
16,983 |
hep-ex/9703013
|
Preprints Libr/pam
|
CLEO Collaboration, J. Bartelt, et al
|
Studies of the Cabbibo-Suppressed Decays $D^+ \to \pi^0 \ell^+ \nu$ and
$D^+ \to \eta e^+ \nu_e$
|
10 page postscript file, postscript file also available through
http://w4.lns.cornell.edu/public/CLNS
|
Phys.Lett.B405:373-378,1997
|
10.1016/S0370-2693(97)00649-7
|
CLNS 97/1460, CLEO 97-1
|
hep-ex
| null |
Using 4.8 fb$^{-1}$ of data taken with the CLEO II detector, the branching
fraction for the Cabibbo-suppressed decay $D^+\to\pi^0\ell^+\nu$ measured
relative to the Cabibbo favored decay $D^+\to\bar{K^0}\ell^+\nu$ is found to be
$0.046\pm 0.014\pm 0.017$. Using $V_{cs}$ and $V_{cd}$ from unitarity
constraints, we determine $| f_+^{\pi}(0)/f_+^K(0)|^2=0.9\pm 0.3\pm 0.3$ We
also present a 90% confidence level upper limit for the branching ratio of the
decay $D^+ \to \eta e^+\nu_e$ relative to that for $D^+ \to \pi^0 e^+\nu_e$ of
1.5.
|
[{'version': 'v1', 'created': 'Tue, 25 Mar 1997 18:40:29 GMT'}]
|
2010-04-08
|
[array(['CLEO Collaboration', '', ''], dtype=object)
array(['Bartelt', 'J.', ''], dtype=object)]
|
16,984 |
1610.03718
|
J.D. Opdyke
|
J.D. Opdyke
|
Fast, Accurate, Straightforward Extreme Quantiles of Compound Loss
Distributions
| null | null | null | null |
q-fin.RM
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present an easily implemented, fast, and accurate method for approximating
extreme quantiles of compound loss distributions (frequency+severity) as are
commonly used in insurance and operational risk capital models. The
Interpolated Single Loss Approximation (ISLA) of Opdyke (2014) is based on the
widely used Single Loss Approximation (SLA) of Degen (2010) and maintains two
important advantages over its competitors: first, ISLA correctly accounts for a
discontinuity in SLA that otherwise can systematically and notably bias the
quantile (capital) approximation under conditions of both finite and infinite
mean. Secondly, because it is based on a closed-form approximation, ISLA
maintains the notable speed advantages of SLA over other methods requiring
algorithmic looping (e.g. fast Fourier transform or Panjer recursion). Speed is
important when simulating many quantile (capital) estimates, as is so often
required in practice, and essential when simulations of simulations are needed
(e.g. some power studies). The modified ISLA (MISLA) presented herein increases
the range of application across the severity distributions most commonly used
in these settings, and it is tested against extensive Monte Carlo simulation
(one billion years' worth of losses) and the best competing method (the
perturbative expansion (PE2) of Hernandez et al., 2014) using twelve
heavy-tailed severity distributions, some of which are truncated. MISLA is
shown to be comparable to PE2 in terms of both speed and accuracy, and it is
arguably more straightforward to implement for the majority of Advanced
Measurement Approaches (AMA) banks that are already using SLA (and failing to
take into account its biasing discontinuity).
|
[{'version': 'v1', 'created': 'Wed, 12 Oct 2016 14:04:45 GMT'}
{'version': 'v2', 'created': 'Mon, 17 Oct 2016 12:10:11 GMT'}
{'version': 'v3', 'created': 'Thu, 5 Jan 2017 20:03:11 GMT'}
{'version': 'v4', 'created': 'Mon, 23 Jan 2017 15:40:09 GMT'}
{'version': 'v5', 'created': 'Sat, 28 Jan 2017 23:23:02 GMT'}
{'version': 'v6', 'created': 'Mon, 17 Apr 2017 20:18:44 GMT'}
{'version': 'v7', 'created': 'Tue, 18 Jul 2017 21:00:54 GMT'}]
|
2017-07-20
|
[array(['Opdyke', 'J. D.', ''], dtype=object)]
|
16,985 |
1907.08699
|
Heinrich S\"obke
|
Heinrich S\"obke and Andrea L\"uck
|
Elementary Interactions An Approach in Decision Tool Development
| null | null | null | null |
cs.CY
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Multi-Criteria Decision Analysis (MCDA) is an established methodology to
support decision making of multi-objective problems. For conducting a MCDA, in
most cases a set of objectives (SOO) is required which consists of a
hierarchical structure with objectives, criteria and indicators. The
development of a SOO may require high organizational effort. This article
introduces elementary interactions as a key paradigm for the development of a
SOO. Elementary interactions are self-contained information requests that can
be answered with little cognitive effort, which are made and processed with the
help of a web platform. Each elementary interaction contributes to the stepwise
development of a SOO. Based on the hypothesis that a SOO can be developed
exclusively with elementary interactions, a platform concept is described.
Essential components of the platform are a Model Aggregator, an Elementary
Interaction Stream Generator, a Participant Manager and a Discussion Forum. The
platform concept has been evaluated in a pilot study using a web-based
prototype. In summary, the proposed concept demonstrates the potential to
advance the development of sets of objectives for MCDA applications: (1) The
platform concept does not restrict the application domain, (2) it is intended
to work with little administration efforts, (3) it lowers the organizational
effort for developing a SOO. (3) it supports the further development of an
existing SOO in the event of significant changes in external conditions. (4)
The development process of the SOO can be recorded by the platform and thus
becomes retraceable. The reproducibility may have a positive effect on the
spread of MCDA applications. The traceability and the use of elementary
interactions make the platform appear to be a suitable medium for Citizen
Science-based approaches to the development of MCDA applications.
|
[{'version': 'v1', 'created': 'Fri, 19 Jul 2019 21:10:33 GMT'}]
|
2019-07-23
|
[array(['Söbke', 'Heinrich', ''], dtype=object)
array(['Lück', 'Andrea', ''], dtype=object)]
|
16,986 |
nucl-th/9806085
|
Dr Takashi Nakatsukasa
|
Takashi Nakatsukasa (UMIST, Manchester, UK) and Yoshifumi R Shimizu
(Kyushu Univ., Fukuoka, Japan)
|
Microscopic calculation of transition intensities for vibrational bands
and high-K isomers
|
5 pages, RevTex using epsf.sty, 2 postscript figures included. Talk
presented at Conference on "Nuclear structure at the extremes" (June 17 - 19,
1998, Lewes, UK)
|
J.Phys.G25:795-797,1999
|
10.1088/0954-3899/25/4/039
|
UMIST/Phys/TP/98-3
|
nucl-th
| null |
We investigate the effect of the Coriolis coupling and the residual
interactions upon the inter-band transition rates for the vibrational bands and
the decay of two-quasiparticle high-K isomers.
|
[{'version': 'v1', 'created': 'Fri, 26 Jun 1998 11:00:23 GMT'}]
|
2008-11-26
|
[array(['Nakatsukasa', 'Takashi', '', 'UMIST, Manchester, UK'],
dtype=object)
array(['Shimizu', 'Yoshifumi R', '', 'Kyushu Univ., Fukuoka, Japan'],
dtype=object) ]
|
16,987 |
1504.07292
|
Triloki Nath
|
Triloki Nath
|
Differentiability of Distance Function and The Proximinal Condition
implying Convexity
|
15 pages, to appear in The journal of Analysis
| null | null | null |
math.FA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We establish a necessary and sufficient condition for the differentiability
of the distance function generated by a nonempty closed set K in a real normed
linear space X under a proximinality condition on K. We do not assume the
uniform differentiability constraints on the norm of the space as in Giles
[16]. Hence, our result advances that of Giles [16]. We prove that the
proximinal condition of Giles [16] is true for almost suns. The proximinal
condition ensures convexity of an almost sun in some class of strongly smooth
spaces under a differentiability condition of the distance function. A
necessary and sufficient condition is obtained for the convexity of Chebyshev
sets in Banach spaces with rotund dual.
|
[{'version': 'v1', 'created': 'Mon, 27 Apr 2015 22:22:37 GMT'}
{'version': 'v2', 'created': 'Wed, 21 Oct 2015 11:56:22 GMT'}
{'version': 'v3', 'created': 'Sat, 5 Dec 2015 20:00:34 GMT'}
{'version': 'v4', 'created': 'Sat, 5 May 2018 18:01:11 GMT'}
{'version': 'v5', 'created': 'Sat, 11 Jul 2020 03:50:45 GMT'}]
|
2020-07-14
|
[array(['Nath', 'Triloki', ''], dtype=object)]
|
16,988 |
2006.13943
|
Mark Van Raamsdonk
|
Petar Simidzija, Mark Van Raamsdonk
|
Holo-ween
|
45 pages, 15 figures. v2: references and figure added. Talk available
at https://www.youtube.com/watch?v=BHA6oFi3QHo
| null |
10.1007/JHEP12(2020)028
| null |
hep-th gr-qc
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We argue that given holographic CFT$_1$ in some state with a dual spacetime
geometry M, and given some other holographic CFT$_2$, we can find states of
CFT$_2$ whose dual geometries closely approximate arbitrarily large causal
patches of M, provided that CFT$_1$ and CFT$_2$ can be non-trivially coupled at
an interface. Our CFT$_2$ states are "dressed up as" states of CFT$_1$: they
are obtained from the original CFT$_1$ state by a regularized quench operator
defined using a Euclidean path-integral with an interface CFT$_1$ CFT$_2$ and
CFT$_1$. Our results are consistent with the idea that the precise microscopic
degrees of freedom and Hamiltonian of a holographic CFT are only important in
fixing the asymptotic behavior of a dual spacetime, while the interior
spacetime of a region spacelike separated from a boundary time slice is
determined by more universal properties (such as entanglement structure) of the
quantum state at this time slice. Our picture requires that low-energy
gravitational theories related to CFTs that can be non-trivially coupled at an
interface are part of the same non-perturbative theory of quantum gravity.
|
[{'version': 'v1', 'created': 'Wed, 24 Jun 2020 18:00:01 GMT'}
{'version': 'v2', 'created': 'Wed, 29 Jul 2020 18:15:20 GMT'}]
|
2020-12-30
|
[array(['Simidzija', 'Petar', ''], dtype=object)
array(['Van Raamsdonk', 'Mark', ''], dtype=object)]
|
16,989 |
1608.08006
|
Ingrid Rotter
|
Hichem Eleuch and Ingrid Rotter
|
Resonances in open quantum systems
|
Title of the paper is changed. The Introduction is broaden. The
difference of the non-Hermitian formalism for the description of open quantum
systems in our paper to the description of PT-symmetric systems is
underlined. Paper published: Phys.Rev.A 95, 022117 (2017)
| null |
10.1103/PhysRevA.95.022117
| null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The Hamilton operator of an open quantum system is non-Hermitian. Its
eigenvalues are, generally, complex and provide not only the energies but also
the lifetimes of the states of the system. The states may couple via the common
environment of scattering wavefunctions into which the system is embedded. This
causes an {\it external mixing} (EM) of the states. Mathematically, EM is
related to the existence of singular (the so-called exceptional) points (EPs).
The eigenfunctions of a non-Hermitian operator are biorthogonal, in contrast to
the orthogonal eigenfunctions of a Hermitian operator. A quantitative measure
for the ratio between biorthogonality and orthogonality is the phase rigidity
of the wavefunctions. At and near an EP, the phase rigidity takes its minimum
value. The lifetimes of two nearby eigenstates of a quantum system bifurcate
under the influence of an EP. At the parameter value of maximum width
bifurcation, the phase rigidity approaches the value one, meaning that the two
eigenfunctions become orthogonal. However, the eigenfunctions are externally
mixed at this parameter value. The S-matrix and therewith the cross section do
contain, in the one-channel case, almost no information on the EM of the
states. The situation is completely different in the case with two (or more)
channels where the resonance structure is strongly influenced by the EM of the
states and interesting features of non-Hermitian quantum physics are revealed.
We provide numerical results for two and three nearby eigenstates of a
non-Hermitian Hamilton operator which are embedded in one common continuum and
influenced by two adjoining EPs. The results are discussed. They are of
interest for an experimental test of the non-Hermitian quantum physics as well
as for applications.
|
[{'version': 'v1', 'created': 'Mon, 29 Aug 2016 11:49:31 GMT'}
{'version': 'v2', 'created': 'Mon, 12 Dec 2016 14:44:37 GMT'}
{'version': 'v3', 'created': 'Thu, 16 Feb 2017 12:43:36 GMT'}]
|
2017-02-17
|
[array(['Eleuch', 'Hichem', ''], dtype=object)
array(['Rotter', 'Ingrid', ''], dtype=object)]
|
16,990 |
1508.03123
|
Florin P. Boca
|
Florin P. Boca
|
A note on full free product C*-algebras, lifting and quasidiagonality
| null |
Proceedings of the 16th International Conference on Operator
Theory (Timisoara, 1996), The Theta Foundation, Bucharest 1997, pp. 51-63
| null | null |
math.OA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study lifting properties for full product C*-algebras with amalgamation
over ${\mathbb C}1$ and give new proofs for some results of Kirchberg and
Pisier. We extend the result of Choi on the quasidiagonality of $C^*({\mathbb
F}_n)$, proving that the free product with amalgamation over ${\mathbb C}1$ of
a family of unital quasidiagonal C*-algebras is quasidiagonal.
|
[{'version': 'v1', 'created': 'Thu, 13 Aug 2015 05:31:40 GMT'}]
|
2015-08-14
|
[array(['Boca', 'Florin P.', ''], dtype=object)]
|
16,991 |
2206.07817
|
Jennifer Volk
|
Jennifer Volk, George Tzimpragos, Alex Wynn, Evan Golden and Timothy
Sherwood
|
Low-Cost Superconducting Fan-Out with Cell I$_\text{C}$ Ranking
|
12 pages, 20 figures, accepted at IEEE TAS
| null |
10.1109/TASC.2023.3256797
| null |
cs.ET
|
http://creativecommons.org/licenses/by/4.0/
|
Superconductor electronics (SCE) promise computer systems with orders of
magnitude higher speeds and lower energy consumption than their complementary
metal-oxide semiconductor (CMOS) counterparts. At the same time, the
scalability and resource utilization of superconducting systems are major
concerns. Some of these concerns come from device-level challenges and the gap
between SCE and CMOS technology nodes, and others come from the way Josephson
Junctions (JJs) are used. Towards this end, we notice that a considerable
fraction of hardware resources are not involved in logic operations, but rather
are used for fan-out and buffering purposes. In this paper, we ask if there is
a way to reduce these overheads, propose the use of JJs at the cell boundaries
to increase the number of outputs that a single stage can drive, and establish
a set of rules to discretize critical currents in a way that is conducive to
this assignment. Finally, we explore the design trade-offs that the presented
approach opens up and demonstrate its promise through detailed analog
simulations and modeling analyses. Our experiments indicate that the introduced
method leads to a 48% savings in the JJ count for a tree with a fan-out of
1024, as well as an average of 43% of the JJ count for signal splitting and 32%
for clock splitting in ISCAS'85 benchmarks.
|
[{'version': 'v1', 'created': 'Wed, 15 Jun 2022 21:08:16 GMT'}
{'version': 'v2', 'created': 'Wed, 19 Oct 2022 19:47:27 GMT'}
{'version': 'v3', 'created': 'Thu, 27 Oct 2022 07:29:24 GMT'}
{'version': 'v4', 'created': 'Mon, 27 Mar 2023 16:26:47 GMT'}]
|
2023-03-28
|
[array(['Volk', 'Jennifer', ''], dtype=object)
array(['Tzimpragos', 'George', ''], dtype=object)
array(['Wynn', 'Alex', ''], dtype=object)
array(['Golden', 'Evan', ''], dtype=object)
array(['Sherwood', 'Timothy', ''], dtype=object)]
|
16,992 |
2105.12660
|
Yuxuan Han
|
Yuxuan Han, Jiaolong Yang, and Ying Fu
|
Disentangled Face Attribute Editing via Instance-Aware Latent Space
Search
|
Accepted by IJCAI-2021
| null | null | null |
cs.CV
|
http://creativecommons.org/licenses/by/4.0/
|
Recent works have shown that a rich set of semantic directions exist in the
latent space of Generative Adversarial Networks (GANs), which enables various
facial attribute editing applications. However, existing methods may suffer
poor attribute variation disentanglement, leading to unwanted change of other
attributes when altering the desired one. The semantic directions used by
existing methods are at attribute level, which are difficult to model complex
attribute correlations, especially in the presence of attribute distribution
bias in GAN's training set. In this paper, we propose a novel framework (IALS)
that performs Instance-Aware Latent-Space Search to find semantic directions
for disentangled attribute editing. The instance information is injected by
leveraging the supervision from a set of attribute classifiers evaluated on the
input images. We further propose a Disentanglement-Transformation (DT) metric
to quantify the attribute transformation and disentanglement efficacy and find
the optimal control factor between attribute-level and instance-specific
directions based on it. Experimental results on both GAN-generated and
real-world images collectively show that our method outperforms
state-of-the-art methods proposed recently by a wide margin. Code is available
at https://github.com/yxuhan/IALS.
|
[{'version': 'v1', 'created': 'Wed, 26 May 2021 16:19:08 GMT'}
{'version': 'v2', 'created': 'Thu, 27 May 2021 14:24:35 GMT'}]
|
2021-05-28
|
[array(['Han', 'Yuxuan', ''], dtype=object)
array(['Yang', 'Jiaolong', ''], dtype=object)
array(['Fu', 'Ying', ''], dtype=object)]
|
16,993 |
0810.5003
|
Akihiro Nishiyama
|
Akihiro Nishiyama
|
Entropy production in 2D $\lambda \phi^4$ theory in the Kadanoff-Baym
approach
|
20 pages, 13 figures
|
Nucl.Phys.A832:289-313,2010
|
10.1016/j.nuclphysa.2009.10.081
| null |
nucl-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study non-equilibrium quantum dynamics of the single-component scalar
field theory in 1+1 space-time dimensions on the basis of the Kadanoff-Baym
equation including the next-to-leading-order (NLO) skeleton diagrams. As an
extension of the non-relativistic case, we derive relativistic kinetic entropy
at the first order in the gradient expansion of the Kadanoff-Baym equations.
The derived entropy satisfies the H theorem. Next we perform numerical
simulations in spatially homogeneous configurations to investigate
thermalization properties of the system by evaluating the system entropy. We
find that at later times the kinetic entropy increases approaching the
equilibrium value, although the limited time interval in the early stage
invalidates the use of it.
|
[{'version': 'v1', 'created': 'Tue, 28 Oct 2008 10:35:31 GMT'}
{'version': 'v2', 'created': 'Wed, 13 Jan 2010 09:46:40 GMT'}]
|
2010-01-15
|
[array(['Nishiyama', 'Akihiro', ''], dtype=object)]
|
16,994 |
2002.00993
|
Martina Vittorietti
|
Martina Vittorietti, Javier Hidalgo, Jilt Sietsma, Wei Li, Geurt
Jongbloed
|
Isotonic regression for metallic microstructure data: estimation and
testing under order restrictions
|
18 pages, 3 figures
| null | null | null |
stat.AP stat.ME
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Investigating the main determinants of the mechanical performance of metals
is not a simple task. Already known physical inspired qualitative relations
between 2D microstructure characteristics and 3D mechanical properties can act
as the starting point of the investigation. Isotonic regression allows to take
into account ordering relations and leads to more efficient and accurate
results when the underlying assumptions actually hold. The main goal in this
paper is to test order relations in a model inspired by a materials science
application. The statistical estimation procedure is described considering
three different scenarios according to the knowledge of the variances: known
variance ratio, completely unknown variances, variances under order
restrictions. New likelihood ratio tests are developed in the last two cases.
Both parametric and non-parametric bootstrap approaches are developed for
finding the distribution of the test statistics under the null hypothesis.
Finally an application on the relation between Geometrically Necessary
Dislocations and number of observed microstructure precipitations is shown.
|
[{'version': 'v1', 'created': 'Mon, 3 Feb 2020 19:42:04 GMT'}]
|
2020-02-05
|
[array(['Vittorietti', 'Martina', ''], dtype=object)
array(['Hidalgo', 'Javier', ''], dtype=object)
array(['Sietsma', 'Jilt', ''], dtype=object)
array(['Li', 'Wei', ''], dtype=object)
array(['Jongbloed', 'Geurt', ''], dtype=object)]
|
16,995 |
1609.06946
|
Jan Hartmann
|
Jan Hartmann (for the CBELSA/TAPS Collaboration)
|
Double polarisation experiments in meson photoproduction
|
6 pages, 5 figures, Proceedings of MESON2016. arXiv admin note: text
overlap with arXiv:1601.01327
|
EPJ Web Conf., 130 (2016) 01011
|
10.1051/epjconf/201613001011
| null |
nucl-ex
|
http://creativecommons.org/licenses/by/4.0/
|
One of the remaining challenges within the standard model is to gain a good
understanding of QCD in the non-perturbative regime. A key step towards this
aim is baryon spectroscopy, investigating the spectrum and the properties of
baryon resonances. To gain access to resonances with small $\pi N$ partial
width, photoproduction experiments provide essential information. Partial wave
analyses need to be performed to extract the contributing resonances. Here, a
complete experiment is required to unambiguously determine the contributing
amplitudes. This involves the measurement of carefully chosen single and double
polarisation observables. In a joint endeavour by MAMI, ELSA, and Jefferson
Laboratory, a new generation of experiments with polarised beams, polarised
proton and neutron targets, and $4\pi$ particle detectors have been performed
in recent years. Many results of unprecedented quality were recently published
by all three experiments, and included by the various partial wave analysis
groups in their analyses, leading to substantial improvements, e.g. a more
precise determination of resonance parameters. An overview of recent results is
given, with an emphasis on results from the CBELSA/TAPS experiment, and their
impact on our understanding of the nucleon excitation spectrum is discussed.
|
[{'version': 'v1', 'created': 'Thu, 22 Sep 2016 12:48:25 GMT'}]
|
2016-12-01
|
[array(['Hartmann', 'Jan', '', 'for the CBELSA/TAPS Collaboration'],
dtype=object) ]
|
16,996 |
1506.06622
|
Amrita Acharyya
|
Amrita Acharyya, Jon M. Corson, and Bikash Das
|
Cofinite Graphs and Groupoids and their Profinite Completions
| null | null | null | null |
math.GR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We define cofinite graphs and cofinite groupoids in a unified way that
extends the notion of cofinite groups introduced by Hartley. The common
underlying structure of all these objects is that they are directed graphs
endowed with a certain type of uniform structure, that we call a cofinite
uniformity. We begin by exploring the fundamental theory of cofinite directed
graphs in full generality. The general theory turns out to be almost completely
analogous to that of cofinite groups. For instance, every cofinite directed
graph has a unique completion which is a com- pact cofinite direct graph.
Moreover, compact cofinite directed graphs are precisely the profinite directed
graphs, i.e., projective limits of finite discrete topological directed graphs.
We then apply the general theory to directed graphs with additional structure
such as graphs (in the sense of Serre) and groupoids, thus leading to the
notions of cofinite graphs and cofinite groupoids. Cofinite groupoids with only
finitely many identities behave much the same as cofinite groups, which are the
same thing as cofinite groupoids with a single identity. However the situation
for cofinite groupoids with infinitely many identities is more complicated.
|
[{'version': 'v1', 'created': 'Mon, 22 Jun 2015 14:26:50 GMT'}
{'version': 'v2', 'created': 'Wed, 1 Jul 2015 22:59:22 GMT'}]
|
2016-10-31
|
[array(['Acharyya', 'Amrita', ''], dtype=object)
array(['Corson', 'Jon M.', ''], dtype=object)
array(['Das', 'Bikash', ''], dtype=object)]
|
16,997 |
2303.02849
|
Yanqing Zou
|
Yanqing Zou
|
Finiteness of mapping class groups and Heegaard distance
|
7 Pages. Comments welcome!
| null | null | null |
math.GT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We prove that the mapping class group of a Heegaard splitting with a distance
of at least 3 is finite. However, we have constructed a counterexample with a
distance of 2 that disproves this assertion. In addition, the fact that the
mapping class group of a Heegaard splitting with a distance of at most 1 is
infinite, when combined with our results, provides an answer to the question of
the finiteness of mapping class groups as viewed from Heegaard distance.
|
[{'version': 'v1', 'created': 'Mon, 6 Mar 2023 03:02:55 GMT'}]
|
2023-03-07
|
[array(['Zou', 'Yanqing', ''], dtype=object)]
|
16,998 |
2205.05958
|
Olli Mansikkam\"aki
|
Olli Mansikkam\"aki, Sami Laine, Atte Piltonen, Matti Silveri
|
Beyond hard-core bosons in transmon arrays
| null | null |
10.1103/PRXQuantum.3.040314
| null |
quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Arrays of transmons have proven to be a viable medium for quantum information
science and quantum simulations. Despite their widespread popularity as qubit
arrays, there remains yet untapped potential beyond the two-level approximation
or, equivalently, the hard-core boson model. With the higher excited levels
included, coupled transmons naturally realize the attractive Bose-Hubbard
model. The dynamics of the model has been difficult to study due to unfavorable
scaling of the dimensionality of the Hilbert space with the system size. In
this work, we present a framework for describing the effective unitary dynamics
of highly-excited states of coupled transmons based on high-order degenerate
perturbation theory. This allows us to describe various collective phenomena --
such as bosons stacked onto a single site behaving as a single particle,
edge-localization, and effective longer-range interactions -- in a unified,
compact and accurate manner. While our examples deal with one-dimensional
chains of transmons for the sake of clarity, the theory can be readily applied
to more general geometries.
|
[{'version': 'v1', 'created': 'Thu, 12 May 2022 08:54:56 GMT'}
{'version': 'v2', 'created': 'Wed, 7 Sep 2022 08:05:57 GMT'}]
|
2022-11-14
|
[array(['Mansikkamäki', 'Olli', ''], dtype=object)
array(['Laine', 'Sami', ''], dtype=object)
array(['Piltonen', 'Atte', ''], dtype=object)
array(['Silveri', 'Matti', ''], dtype=object)]
|
16,999 |
0910.5351
|
Michael Thies
|
Wieland Brendel, Michael Thies
|
Covariant boost and structure functions of baryons in Gross-Neveu models
|
13 pages, 12 figures; v2: minor corrections
| null |
10.1103/PhysRevD.81.085002
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hep-th hep-lat hep-ph
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http://arxiv.org/licenses/nonexclusive-distrib/1.0/
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Baryons in the large N limit of two-dimensional Gross-Neveu models are
reconsidered. The time-dependent Dirac-Hartree-Fock approach is used to boost a
baryon to any inertial frame and shown to yield the covariant energy-momentum
relation. Momentum distributions are computed exactly in arbitrary frames and
used to interpolate between the rest frame and the infinite momentum frame,
where they are related to structure functions. Effects from the Dirac sea
depend sensitively on the occupation fraction of the valence level and the bare
fermion mass and do not vanish at infinite momentum. In the case of the kink
baryon, they even lead to divergent quark and antiquark structure functions at
x=0.
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[{'version': 'v1', 'created': 'Wed, 28 Oct 2009 11:29:55 GMT'}
{'version': 'v2', 'created': 'Tue, 9 Mar 2010 11:21:33 GMT'}]
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2013-05-29
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[array(['Brendel', 'Wieland', ''], dtype=object)
array(['Thies', 'Michael', ''], dtype=object)]
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