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|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
5,500 |
1604.03156
|
Kael Dixon
|
Kael Dixon
|
Regular ambitoric $4$-manifolds: from Riemannian Kerr to a complete
classification
|
43 pages, 8 figures. Updated to fix a small error and extend the
results to a broader class of metrics
| null | null | null |
math.DG gr-qc math.SG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We show that the conformal structure for the Riemannian analogues of Kerr
black-hole metrics can be given an ambitoric structure. We then discuss the
properties of the moment maps. In particular, we observe that the moment map
image is not locally convex near the singularity corresponding to the ring
singularity in the interior of the black hole. We then proceed to classify
regular ambitoric $4$-orbifolds with some completeness assumptions. The tools
developed also allow us to prove a partial classification of compact Riemannian
$4$-manifolds which admit a Killing $2$-form.
|
[{'version': 'v1', 'created': 'Mon, 11 Apr 2016 21:28:11 GMT'}
{'version': 'v2', 'created': 'Wed, 22 Jun 2016 20:56:27 GMT'}]
|
2016-06-24
|
[array(['Dixon', 'Kael', ''], dtype=object)]
|
5,501 |
2102.02502
|
Sebastian Bullinger
|
Sebastian Bullinger, Christoph Bodensteiner, Michael Arens
|
3D Surface Reconstruction From Multi-Date Satellite Images
|
Accepted at ISPRS Congress 2021
| null | null | null |
cs.CV
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The reconstruction of accurate three-dimensional environment models is one of
the most fundamental goals in the field of photogrammetry. Since satellite
images provide suitable properties for obtaining large-scale environment
reconstructions, there exist a variety of Stereo Matching based methods to
reconstruct point clouds for satellite image pairs. Recently, the first
Structure from Motion (SfM) based approach has been proposed, which allows to
reconstruct point clouds from multiple satellite images. In this work, we
propose an extension of this SfM based pipeline that allows us to reconstruct
not only point clouds but watertight meshes including texture information. We
provide a detailed description of several steps that are mandatory to exploit
state-of-the-art mesh reconstruction algorithms in the context of satellite
imagery. This includes a decomposition of finite projective camera calibration
matrices, a skew correction of corresponding depth maps and input images as
well as the recovery of real-world depth maps from reparameterized depth
values. The paper presents an extensive quantitative evaluation on multi-date
satellite images demonstrating that the proposed pipeline combined with current
meshing algorithms outperforms state-of-the-art point cloud reconstruction
algorithms in terms of completeness and median error. We make the source code
of our pipeline publicly available.
|
[{'version': 'v1', 'created': 'Thu, 4 Feb 2021 09:23:21 GMT'}
{'version': 'v2', 'created': 'Sat, 3 Apr 2021 12:50:05 GMT'}]
|
2021-04-06
|
[array(['Bullinger', 'Sebastian', ''], dtype=object)
array(['Bodensteiner', 'Christoph', ''], dtype=object)
array(['Arens', 'Michael', ''], dtype=object)]
|
5,502 |
0910.4997
|
Mathieu Carette
|
Mathieu Carette and Richard Weidmann
|
On the rank of Coxeter groups
|
36 pages, 26 figures
| null | null | null |
math.GR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We show that the standard generating set of a Coxeter group is of minimal
cardinality provided that the non-diagonal entries of the Coxeter matrix are
sufficiently large.
|
[{'version': 'v1', 'created': 'Mon, 26 Oct 2009 23:06:19 GMT'}]
|
2009-10-28
|
[array(['Carette', 'Mathieu', ''], dtype=object)
array(['Weidmann', 'Richard', ''], dtype=object)]
|
5,503 |
2001.02752
|
Yue Chen
|
Yue Chen, Steven K. Morley, and Matthew R. Carver
|
Global Prompt Proton Sensor Network: Monitoring Solar Energetic Protons
based on GPS Satellite Constellation
|
submitted to Journal of Geophysical Research: Space Physics
|
Journal of Geophysical Research: Space Physics, 125, e2019JA027679
|
10.1029/2019JA027679
|
LA-UR-19-31569
|
physics.space-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Energetic particle instruments on board GPS satellites form a powerful global
prompt proton sensor network (GPPSn) that provides an unprecedented opportunity
to monitor and characterize solar energetic protons targeting the Earth. The
medium-Earth-orbits of the GPS constellation have the unique advantage of
allowing solar energetic protons to be simultaneously measured from multiple
points in both open- and closed-field line regions. Examining two example
intervals of solar proton events, we showcase in this study how GPS proton data
are prepared, calibrated and utilized to reveal important features of solar
protons, including their source, acceleration/scattering by interplanetary
shocks, the relative position of Earth when impinged by these shocks, the shape
of solar particle fronts, the access of solar protons inside the dynamic
geomagnetic field, as well temporally-varying proton distributions in both
energy and space. By comparing to Van Allen Probes data, GPS proton
observations are further demonstrated not only to be useful for qualitatively
monitoring the dynamics of solar protons, but also for quantitative scientific
research including determining cutoff L-shells. Our results establish that this
GPPSn can join forces with other existing solar proton monitors and contribute
to observing, warning, understanding and ultimately forecasting the incoming
solar energetic proton events.
|
[{'version': 'v1', 'created': 'Wed, 8 Jan 2020 21:44:43 GMT'}]
|
2020-07-08
|
[array(['Chen', 'Yue', ''], dtype=object)
array(['Morley', 'Steven K.', ''], dtype=object)
array(['Carver', 'Matthew R.', ''], dtype=object)]
|
5,504 |
2301.03680
|
Petr Vojt\v{e}chovsk\'y
|
Ale\v{s} Dr\'apal and Petr Vojt\v{e}chovsk\'y
|
Congruence solvability in finite Moufang loops of order coprime to three
| null | null | null | null |
math.GR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We prove that a normal subloop $X$ of a Moufang loop $Q$ induces an abelian
congruence of $Q$ if and only if each inner mapping of $Q$ restricts to an
automorphism of $X$ and $u(xy) = (uy)x$ for all $x,y\in X$ and $u\in Q$. The
former condition can be omitted when $X$ is $3$-divisible. This
characterization is then used to show that classically solvable finite
$3$-divisible Moufang loops are congruence solvable.
|
[{'version': 'v1', 'created': 'Mon, 9 Jan 2023 21:06:20 GMT'}]
|
2023-01-11
|
[array(['Drápal', 'Aleš', ''], dtype=object)
array(['Vojtěchovský', 'Petr', ''], dtype=object)]
|
5,505 |
hep-ph/0509200
|
David Anderson
|
David L. Anderson, Marc Sher (The College of William & Mary)
|
3-3-1 Models with Unique Lepton Generations
|
21 pages, accepted for publication in Physical Review D
|
Phys.Rev. D72 (2005) 095014
|
10.1103/PhysRevD.72.095014
|
WM-05-119
|
hep-ph
| null |
We study previously unconsidered 3-3-1 models which are characterized by each
lepton generation having a different representation under the gauge group.
Flavor-changing neutral currents in the lepton sector occur in these models. To
satisfy constraints on mu to 3e decays, the Z' must be heavier than 2 to 40
TeV, depending on the model and assignments of the leptons. These models can
result in very unusual Higgs decay modes. In most cases the mu-tau decay state
is large (in one case, it is the dominant mode), and in one case, the Higgs to
s-sbar rate dominates.
|
[{'version': 'v1', 'created': 'Tue, 20 Sep 2005 18:00:33 GMT'}
{'version': 'v2', 'created': 'Tue, 8 Nov 2005 20:55:52 GMT'}
{'version': 'v3', 'created': 'Tue, 8 Nov 2005 21:01:44 GMT'}]
|
2009-11-11
|
[array(['Anderson', 'David L.', '', 'The College of William & Mary'],
dtype=object)
array(['Sher', 'Marc', '', 'The College of William & Mary'], dtype=object)]
|
5,506 |
astro-ph/0205193
|
Tommaso Treu
|
T. Treu (1) M. Stiavelli (2) ((1) California Institute of Technology
(2) Space Telescope Science Institute)
|
Measuring the mass of high-z galaxies with NGST
|
to appear in "The Mass of Galaxies at Low and High Redshift" R.
Bender and A. Renzini eds
| null |
10.1007/10899892_82
| null |
astro-ph
| null |
We discuss dynamical mass measurements of high-z galaxies with the Next
Generation Space Telescope (NGST). In particular, we review some of the
observational limits with the current instrument/telescope generation, we
discuss the redshift limits and caveats for absorption and emission lines
studies with NGST, and the existence of suitable targets at high redshift. We
also briefly summarize strengths and weaknesses of proposed NGST instruments
for dynamical studies.
|
[{'version': 'v1', 'created': 'Tue, 14 May 2002 00:19:26 GMT'}]
|
2009-11-07
|
[array(['Treu', 'T.', ''], dtype=object)
array(['Stiavelli', 'M.', ''], dtype=object)]
|
5,507 |
1704.03651
|
Javier Gonz\'alez
|
Javier Gonzalez and Zhenwen Dai and Andreas Damianou and Neil D.
Lawrence
|
Preferential Bayesian Optimization
|
10 pages, 6 figures
| null | null | null |
stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Bayesian optimization (BO) has emerged during the last few years as an
effective approach to optimizing black-box functions where direct queries of
the objective are expensive. In this paper we consider the case where direct
access to the function is not possible, but information about user preferences
is. Such scenarios arise in problems where human preferences are modeled, such
as A/B tests or recommender systems. We present a new framework for this
scenario that we call Preferential Bayesian Optimization (PBO) which allows us
to find the optimum of a latent function that can only be queried through
pairwise comparisons, the so-called duels. PBO extends the applicability of
standard BO ideas and generalizes previous discrete dueling approaches by
modeling the probability of the winner of each duel by means of a Gaussian
process model with a Bernoulli likelihood. The latent preference function is
used to define a family of acquisition functions that extend usual policies
used in BO. We illustrate the benefits of PBO in a variety of experiments,
showing that PBO needs drastically fewer comparisons for finding the optimum.
According to our experiments, the way of modeling correlations in PBO is key in
obtaining this advantage.
|
[{'version': 'v1', 'created': 'Wed, 12 Apr 2017 07:49:54 GMT'}]
|
2017-04-13
|
[array(['Gonzalez', 'Javier', ''], dtype=object)
array(['Dai', 'Zhenwen', ''], dtype=object)
array(['Damianou', 'Andreas', ''], dtype=object)
array(['Lawrence', 'Neil D.', ''], dtype=object)]
|
5,508 |
2203.07280
|
Hao-Tsung Yang
|
Peyman Afshani, Mark de Berg, Kevin Buchin, Jie Gao, Maarten Loffler,
Amir Nayyeri, Benjamin Raichel, Rik Sarkar, Haotian Wang, Hao-Tsung Yang
|
On Cyclic Solutions to the Min-Max Latency Multi-Robot Patrolling
Problem
|
This paper is accepted in the 38th International Symposium on
Computational Geometry (SoCG 2022)
| null | null | null |
cs.CG cs.AI
|
http://creativecommons.org/licenses/by/4.0/
|
We consider the following surveillance problem: Given a set $P$ of $n$ sites
in a metric space and a set of $k$ robots with the same maximum speed, compute
a patrol schedule of minimum latency for the robots. Here a patrol schedule
specifies for each robot an infinite sequence of sites to visit (in the given
order) and the latency $L$ of a schedule is the maximum latency of any site,
where the latency of a site $s$ is the supremum of the lengths of the time
intervals between consecutive visits to $s$. When $k=1$ the problem is
equivalent to the travelling salesman problem (TSP) and thus it is NP-hard. We
have two main results. We consider cyclic solutions in which the set of sites
must be partitioned into $\ell$ groups, for some~$\ell \leq k$, and each group
is assigned a subset of the robots that move along the travelling salesman tour
of the group at equal distance from each other. Our first main result is that
approximating the optimal latency of the class of cyclic solutions can be
reduced to approximating the optimal travelling salesman tour on some input,
with only a $1+\varepsilon$ factor loss in the approximation factor and an
$O\left(\left( k/\varepsilon \right)^k\right)$ factor loss in the runtime, for
any $\varepsilon >0$. Our second main result shows that an optimal cyclic
solution is a $2(1-1/k)$-approximation of the overall optimal solution. Note
that for $k=2$ this implies that an optimal cyclic solution is optimal overall.
The results have a number of consequences. For the Euclidean version of the
problem, for instance, combining our results with known results on Euclidean
TSP, yields a PTAS for approximating an optimal cyclic solution, and it yields
a $(2(1-1/k)+\varepsilon)$-approximation of the optimal unrestricted solution.
If the conjecture mentioned above is true, then our algorithm is actually a
PTAS for the general problem in the Euclidean setting.
|
[{'version': 'v1', 'created': 'Mon, 14 Mar 2022 16:54:33 GMT'}]
|
2022-03-15
|
[array(['Afshani', 'Peyman', ''], dtype=object)
array(['de Berg', 'Mark', ''], dtype=object)
array(['Buchin', 'Kevin', ''], dtype=object)
array(['Gao', 'Jie', ''], dtype=object)
array(['Loffler', 'Maarten', ''], dtype=object)
array(['Nayyeri', 'Amir', ''], dtype=object)
array(['Raichel', 'Benjamin', ''], dtype=object)
array(['Sarkar', 'Rik', ''], dtype=object)
array(['Wang', 'Haotian', ''], dtype=object)
array(['Yang', 'Hao-Tsung', ''], dtype=object)]
|
5,509 |
2304.07378
|
Minning Zhu
|
Minning Zhu, Tzu-Wei Kuo, Chung-Tse Michael Wu
|
A Reconfigurable Linear RF Analog Processor for Realizing Microwave
Artificial Neural Network
|
11 pages, 16 figures
| null | null | null |
cs.AR
|
http://creativecommons.org/licenses/by-nc-nd/4.0/
|
Owing to the data explosion and rapid development of artificial intelligence
(AI), particularly deep neural networks (DNNs), the ever-increasing demand for
large-scale matrix-vector multiplication has become one of the major issues in
machine learning (ML). Training and evaluating such neural networks rely on
heavy computational resources, resulting in significant system latency and
power consumption. To overcome these issues, analog computing using optical
interferometric-based linear processors have recently appeared as promising
candidates in accelerating matrix-vector multiplication and lowering power
consumption. On the other hand, radio frequency (RF) electromagnetic waves can
also exhibit similar advantages as the optical counterpart by performing analog
computation at light speed with lower power. Furthermore, RF devices have extra
benefits such as lower cost, mature fabrication, and analog-digital mixed
design simplicity, which has great potential in realizing affordable, scalable,
low latency, low power, near-sensor radio frequency neural network (RFNN) that
may greatly enrich RF signal processing capability. In this work, we propose a
2X2 reconfigurable linear RF analog processor in theory and experiment, which
can be applied as a matrix multiplier in an artificial neural network (ANN).
The proposed device can be utilized to realize a 2X2 simple RFNN for data
classification. An 8X8 linear analog processor formed by 28 RFNN devices are
also applied in a 4-layer ANN for Modified National Institute of Standards and
Technology (MNIST) dataset classification.
|
[{'version': 'v1', 'created': 'Fri, 14 Apr 2023 20:21:17 GMT'}]
|
2023-04-18
|
[array(['Zhu', 'Minning', ''], dtype=object)
array(['Kuo', 'Tzu-Wei', ''], dtype=object)
array(['Wu', 'Chung-Tse Michael', ''], dtype=object)]
|
5,510 |
2202.03707
|
Giuseppe Patera
|
G Patera (PhLAM), M Allgaier, D Horoshko, M Kolobov (PhLAM), C
Silberhorn (UPB)
|
A modal approach to quantum temporal imaging
| null | null | null | null |
physics.optics quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider the problem of quantum temporal imaging in the case where the
time lens is implemented by a Sum Frequency Generation nonlinear process, in
particular when the device is operated close to 100% conversion efficiency. In
the general case where the time lens also presents a finite aperture and a
non-perfect phase-matching the relevant figures of merit, as for example the
temporal resolution, do not have an explicit expression. As a consequence, the
performances of imaging scheme are difficult to assess. Having a reliable
estimation of these figures of merits is particularly important because they
can be significantly different from the regime of low conversion efficiency
usually considered in classical temporal imaging. We show that this problem can
be approached in terms of the eigenmodes of the imaging scheme and we show how
its relevant figures of merit can be extracted from the modal description of
the imaging scheme. As a consequence we obtain criteria allowing to design
imaging schemes with close to unity efficiencies.
|
[{'version': 'v1', 'created': 'Tue, 8 Feb 2022 08:00:53 GMT'}
{'version': 'v2', 'created': 'Wed, 9 Feb 2022 10:23:33 GMT'}]
|
2022-02-10
|
[array(['Patera', 'G', '', 'PhLAM'], dtype=object)
array(['Allgaier', 'M', '', 'PhLAM'], dtype=object)
array(['Horoshko', 'D', '', 'PhLAM'], dtype=object)
array(['Kolobov', 'M', '', 'PhLAM'], dtype=object)
array(['Silberhorn', 'C', '', 'UPB'], dtype=object)]
|
5,511 |
1804.11188
|
Corentin Tallec
|
Corentin Tallec, Yann Ollivier
|
Can recurrent neural networks warp time?
| null | null | null | null |
cs.LG cs.NE stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Successful recurrent models such as long short-term memories (LSTMs) and
gated recurrent units (GRUs) use ad hoc gating mechanisms. Empirically these
models have been found to improve the learning of medium to long term temporal
dependencies and to help with vanishing gradient issues. We prove that
learnable gates in a recurrent model formally provide quasi- invariance to
general time transformations in the input data. We recover part of the LSTM
architecture from a simple axiomatic approach. This result leads to a new way
of initializing gate biases in LSTMs and GRUs. Ex- perimentally, this new
chrono initialization is shown to greatly improve learning of long term
dependencies, with minimal implementation effort.
|
[{'version': 'v1', 'created': 'Fri, 23 Mar 2018 09:17:35 GMT'}]
|
2018-05-01
|
[array(['Tallec', 'Corentin', ''], dtype=object)
array(['Ollivier', 'Yann', ''], dtype=object)]
|
5,512 |
hep-ph/9805343
|
Sandip Pakvasa
|
John G. Learned, Sandip Pakvasa and J. L. Stone
|
Up-Down Asymmetry of Neutral Current Events as a Diagnostic for Nu_mu -
Nu-st Versus Nu_mu- Nu_tau Oscillations
|
3pages, 1 figure
|
Phys.Lett. B435 (1998) 131-133
|
10.1016/S0370-2693(98)00806-5
|
UH-511-901-98
|
hep-ph hep-ex
| null |
We show that the asymmetry in the neutral current events (e.g. Nu N -> Nu N
pi^0) can be used to discriminate between Nu_mu - Nu_tau and Nu_mu - Nu_st
mixing as being responsible for the atmospheric neutrino anomaly. Specifically,
A_N vanishes for Nu_mu - Nu_tau mixing and is about 2/3 A_mu for Nu_mu - Nu_st
mixing.
|
[{'version': 'v1', 'created': 'Fri, 15 May 1998 21:06:07 GMT'}]
|
2009-10-31
|
[array(['Learned', 'John G.', ''], dtype=object)
array(['Pakvasa', 'Sandip', ''], dtype=object)
array(['Stone', 'J. L.', ''], dtype=object)]
|
5,513 |
1611.01083
|
Alok Pal
|
Alok Ranjan Pal, Anirban Kundu, Abhay Singh, Raj Shekhar and Kunal
Sinha
|
A Hybrid Approach to Word Sense Disambiguation Combining Supervised and
Unsupervised Learning
|
13 pages in International Journal of Artificial Intelligence &
Applications (IJAIA), Vol. 4, No. 4, July 2013
| null |
10.5121/ijaia.2013.4409
| null |
cs.CL
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper, we are going to find meaning of words based on distinct
situations. Word Sense Disambiguation is used to find meaning of words based on
live contexts using supervised and unsupervised approaches. Unsupervised
approaches use online dictionary for learning, and supervised approaches use
manual learning sets. Hand tagged data are populated which might not be
effective and sufficient for learning procedure. This limitation of information
is main flaw of the supervised approach. Our proposed approach focuses to
overcome the limitation using learning set which is enriched in dynamic way
maintaining new data. Trivial filtering method is utilized to achieve
appropriate training data. We introduce a mixed methodology having Modified
Lesk approach and Bag-of-Words having enriched bags using learning methods. Our
approach establishes the superiority over individual Modified Lesk and
Bag-of-Words approaches based on experimentation.
|
[{'version': 'v1', 'created': 'Thu, 19 Nov 2015 10:36:52 GMT'}]
|
2016-11-04
|
[array(['Pal', 'Alok Ranjan', ''], dtype=object)
array(['Kundu', 'Anirban', ''], dtype=object)
array(['Singh', 'Abhay', ''], dtype=object)
array(['Shekhar', 'Raj', ''], dtype=object)
array(['Sinha', 'Kunal', ''], dtype=object)]
|
5,514 |
2211.04543
|
Bibek Pokharel
|
Bibek Pokharel, Daniel Lidar
|
Better-than-classical Grover search via quantum error detection and
suppression
|
21 pages, 10 main figures + 9 supplementary figures, 3 tables
| null | null | null |
quant-ph
|
http://creativecommons.org/licenses/by/4.0/
|
Grover's search algorithm is one of the first quantum algorithms to exhibit a
provable quantum advantage. It forms the backbone of numerous quantum
applications and is widely used in benchmarking efforts. Here, we report
better-than-classical success probabilities for a complete Grover search
algorithm on the largest scale demonstrated to date, of up to five qubits,
using two different IBM superconducting transmon qubit platforms. This is
enabled, on the four and five-qubit scale, by error suppression via robust
dynamical decoupling pulse sequences, without which we do not observe
better-than-classical results. Further improvements arise after the use of
measurement error mitigation, but the latter is insufficient by itself for
achieving better-than-classical performance. For two qubits, we demonstrate a
success probability of 99.5% via the use of the [[4,2,2]] quantum
error-detection (QED) code. This constitutes a demonstration of quantum
algorithmic breakeven via QED. Along the way, we introduce algorithmic error
tomography, a method of independent interest that provides a holistic view of
the errors accumulated throughout an entire quantum algorithm, filtered via the
errors detected by the QED code used to encode the circuit. We demonstrate that
algorithmic error tomography provides a stringent test of an error model based
on a combination of amplitude damping, dephasing, and depolarization.
|
[{'version': 'v1', 'created': 'Tue, 8 Nov 2022 20:31:02 GMT'}]
|
2022-11-10
|
[array(['Pokharel', 'Bibek', ''], dtype=object)
array(['Lidar', 'Daniel', ''], dtype=object)]
|
5,515 |
1501.00576
|
Krzysztof Marciniak
|
Maciej Blaszak, Krzysztof Marciniak and Ziemowit Domanski
|
Separable quantizations of St\"{a}ckel systems
|
We added the journal reference and also intorduced several minor
amendmends
|
Annals of Physics 371 (2016) pp. 460-471
|
10.1016/j.aop.2016.06.007
| null |
nlin.SI quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this article we prove that many Hamiltonian systems that can not be
separably quantized in the classical approach of Robertson and Eisenhardt can
be separably quantized if we extend the class of admissible quantizations
through a suitable choice of Riemann space adapted to the Poisson geometry of
the system. Actually, in this article we prove that for every quadratic in
momenta St\"ackel system (defined on a 2n-dimensional Poisson manifold) for
which the St\"ackel matrix consists of monomials in position coordinates there
exist infinitely many quantizations - parametrized by n arbitrary functions -
that turn this system into a quantum separable St\"ackel system.
|
[{'version': 'v1', 'created': 'Sat, 3 Jan 2015 16:09:28 GMT'}
{'version': 'v2', 'created': 'Thu, 15 Jan 2015 10:06:30 GMT'}
{'version': 'v3', 'created': 'Fri, 15 Jan 2016 07:21:36 GMT'}
{'version': 'v4', 'created': 'Fri, 21 Oct 2016 09:25:25 GMT'}]
|
2016-10-24
|
[array(['Blaszak', 'Maciej', ''], dtype=object)
array(['Marciniak', 'Krzysztof', ''], dtype=object)
array(['Domanski', 'Ziemowit', ''], dtype=object)]
|
5,516 |
1507.07012
|
Diego Calder\'on
|
D. Calder\'on, A. Ballone, J. Cuadra, M. Schartmann, A. Burkert and S.
Gillessen
|
Clump formation through colliding stellar winds in the Galactic Centre
|
Accepted for publication in MNRAS, 11 pages, 6 figures
| null |
10.1093/mnras/stv2644
| null |
astro-ph.GA astro-ph.SR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The gas cloud G2 is currently being tidally disrupted by the Galactic Centre
super-massive black hole, Sgr A*. The region around the black hole is populated
by $\sim 30$ Wolf-Rayet stars, which produce strong outflows. We explore the
possibility that gas clumps, such as G2, originate from the collision of
stellar winds via the non-linear thin shell instability. Following an
analytical approach, we study the thermal evolution of slabs formed in the
symmetric collision of winds, evaluating whether instabilities occur, and
estimating possible clump masses. We find that the collision of relatively slow
($< 750$ km s$^{-1}$) and strong ($\sim 10^{-5}$ Msun yr$^{-1}$) stellar winds
from stars at short separations ($<10$ mpc) is a process that indeed could
produce clumps of G2's mass and above. Such short separation encounters of
single stars along their known orbits are not common in the Galactic Centre,
making this process a possible but unlikely origin for G2. We also discuss
clump formation in close binaries such as IRS 16SW and in asymmetric encounters
as promising alternatives that deserve further numerical study.
|
[{'version': 'v1', 'created': 'Fri, 24 Jul 2015 20:50:23 GMT'}
{'version': 'v2', 'created': 'Wed, 11 Nov 2015 17:58:25 GMT'}]
|
2015-12-16
|
[array(['Calderón', 'D.', ''], dtype=object)
array(['Ballone', 'A.', ''], dtype=object)
array(['Cuadra', 'J.', ''], dtype=object)
array(['Schartmann', 'M.', ''], dtype=object)
array(['Burkert', 'A.', ''], dtype=object)
array(['Gillessen', 'S.', ''], dtype=object)]
|
5,517 |
2303.11832
|
Sohail Farhangi
|
Sohail Farhangi
|
A generalization of van der Corput's difference theorem with
applications to recurrence and multiple ergodic averages
|
This was supposed to be version 5 of arXiv:2106.01123, but I
accidentally created a brand new submission when trying to submit version 4.
This final edition is the journal edition that includes some new applications
and much better formatting. Dynamical Systems, 2023
| null |
10.1080/14689367.2023.2230160
| null |
math.DS
|
http://creativecommons.org/licenses/by/4.0/
|
We prove a generalization of van der Corput's difference theorem for
sequences of vectors in a Hilbert space. This generalization is obtained by
establishing a connection between sequences of vectors in the first Hilbert
space with a vector in a new Hilbert space whose spectral type with respect to
a certain unitary operator is absolutely continuous with respect to the
Lebesgue measure. We use this generalization to obtain applications regarding
recurrence and multiple ergodic averages when we have measure preserving
automorphisms T and S that do not necessarily commute, but T has a maximal
spectral type that is mutually singular with the Lebesgue measure.
|
[{'version': 'v1', 'created': 'Tue, 21 Mar 2023 13:20:37 GMT'}
{'version': 'v2', 'created': 'Tue, 4 Jul 2023 07:40:16 GMT'}]
|
2023-07-06
|
[array(['Farhangi', 'Sohail', ''], dtype=object)]
|
5,518 |
1503.04109
|
Riccardo Catena
|
Riccardo Catena
|
Dark matter signals at neutrino telescopes in effective theories
|
26 pages, 13 figures. In all calculations, $^{59}$Ni replaced by
$^{58}$Ni. Main results unchanged
|
JCAP 1504 (2015) 04, 052
|
10.1088/1475-7516/2015/04/052
| null |
hep-ph astro-ph.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We constrain the effective theory of one-body dark matter-nucleon
interactions using neutrino telescope observations. We derive exclusion limits
on the 28 coupling constants of the theory, exploring interaction operators
previously considered in dark matter direct detection only, and using new
nuclear response functions recently derived through nuclear structure
calculations. We determine for what interactions neutrino telescopes are
superior to current direct detection experiments, and show that Hydrogen is not
the most important element in the exclusion limit calculation for the majority
of the spin-dependent operators.
|
[{'version': 'v1', 'created': 'Fri, 13 Mar 2015 15:33:54 GMT'}
{'version': 'v2', 'created': 'Fri, 17 Jul 2015 16:11:57 GMT'}
{'version': 'v3', 'created': 'Wed, 19 Oct 2016 13:55:11 GMT'}]
|
2016-10-20
|
[array(['Catena', 'Riccardo', ''], dtype=object)]
|
5,519 |
0911.5093
|
Andreas Zimbal
|
A. Zimbal, L. Giacomelli, R. Nolte and H. Schuhmacher
|
Characterization of Monoenergetic Neutron Reference Fields with a High
Resolution Diamond Detector
|
9 pages, 8 figures. Presented at the 11th Neutron And Ion Dosimetry
Symposium (NEUDOS-11) iThemba LABS, Cape Town, South Africa, 12 - 16 October
2009
|
Radiat.Meas.45:1313-1317,2010
|
10.1016/j.radmeas.2010.06.036
| null |
physics.ins-det
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A novel radiation detector based on an artificial single crystal diamond was
used to characterize in detail the energy distribution of neutron reference
fields at the Physikalisch-Technische Bundesanstalt (PTB) and their
contamination with charged particles. The monoenergetic reference fields at PTB
in the neutron energy range from 1.5 MeV up to 19 MeV are generated by proton
and deuteron beams impinging on solid and gas targets of tritium and deuterium.
The energy of the incoming particles and the variation of the angle under which
the measurement is performed produce monoenergetic reference fields with
different mean energies and line shapes.
In this paper we present high resolution neutron spectrometry measurements of
different monoenergetic reference fields. The results are compared with
calculated spectra taking into account the actual target parameters. Line
structures in the order of 80 keV for a neutron energy of 9 MeV were resolved.
The shift of the mean energy and the increasing of the width of the neutron
peak with increasing pressure in the gas target in the order of 30 keV were
measured.
Another result is the determination of the contamination of the neutron field
at 14 MeV with high energy charged particles (protons) from side reactions
inside the T-target.
The experiments have shown that this detector is an easy to operate compact
neutron spectrometer with extremely good energy resolution and that detailed
structures in the line shapes of monoenergetic neutron fields can be resolved
without using time of flight techniques.
|
[{'version': 'v1', 'created': 'Thu, 26 Nov 2009 14:42:21 GMT'}]
|
2010-12-15
|
[array(['Zimbal', 'A.', ''], dtype=object)
array(['Giacomelli', 'L.', ''], dtype=object)
array(['Nolte', 'R.', ''], dtype=object)
array(['Schuhmacher', 'H.', ''], dtype=object)]
|
5,520 |
2304.11629
|
Sarben Sarkar
|
Carl M. Bender and Sarben Sarkar
|
New classes of solutions for Euclidean scalar field theories
| null | null | null | null |
hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This paper presents classes of exact solutions for nonlinear ordinary
differential equations that arise as a saddle point condition for scalar field
theories in both integer and noninteger $D$ spacetime dimensions. These
solutions are for Euclidean theories; they are found by exploiting the
dimensional consistency of the differential equation for a single massless
scalar field followed by transforming to an autonomous equation. The solutions
depend on the power of the interaction as well as on the spatial dimension,
both of which may be noninteger. Scalar equations, which arise in the study of
conformal invariance, fit into this framework and classes of new solutions are
found. The behaviour of the solutions as $D$ approaches 2 from above is
discussed.
|
[{'version': 'v1', 'created': 'Sun, 23 Apr 2023 12:03:46 GMT'}]
|
2023-04-25
|
[array(['Bender', 'Carl M.', ''], dtype=object)
array(['Sarkar', 'Sarben', ''], dtype=object)]
|
5,521 |
1508.05381
|
Ezra Miller
|
Ezra Miller
|
Fruit flies and moduli: interactions between biology and mathematics
|
10 pages, 2 figures (consisting of 5 .jpg images); accepted at
Notices of the American Mathematical Society
| null | null | null |
q-bio.QM math.AG math.PR q-bio.PE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Possibilities for using geometry and topology to analyze statistical problems
in biology raise a host of novel questions in geometry, probability, algebra,
and combinatorics that demonstrate the power of biology to influence the future
of pure mathematics. This expository article is a tour through some biological
explorations and their mathematical ramifications. The article starts with
evolution of novel topological features in wing veins of fruit flies, which are
quantified using the algebraic structure of multiparameter persistent homology.
The statistical issues involved highlight mathematical implications of sampling
from moduli spaces. These lead to geometric probability on stratified spaces,
including the sticky phenomenon for Frechet means and the origin of this
mathematical area in the reconstruction of phylogenetic trees.
|
[{'version': 'v1', 'created': 'Fri, 21 Aug 2015 19:57:12 GMT'}]
|
2015-08-27
|
[array(['Miller', 'Ezra', ''], dtype=object)]
|
5,522 |
1903.02528
|
Gavin Orchin
|
Gavin J. Orchin, Domenico De Fazio, Angelo Di Bernardo, Matthew Hamer,
Duhee Yoon, Alisson R. Cadore, Ilya Goykhman, Kenji Watanabe, Takashi
Taniguchi, Jason W. A. Robinson, Roman V. Gorbachev, Andrea C. Ferrari,
Robert H. Hadfield
|
Niobium diselenide superconducting photodetectors
|
6 pages, 6 figures
| null |
10.1063/1.5097389
| null |
cond-mat.supr-con physics.app-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We report the photoresponse of niobium diselenide (NbSe$_2$), a transition
metal dichalcogenide (TMD) which exhibits superconducting properties down to a
single layer. Devices are built by using micro-mechanically cleaved 2 to 10
layers and tested under current bias using nano-optical mapping in the 350mK-5K
range, where they are found to be superconducting. The superconducting state
can be broken by absorption of light, resulting in a voltage signal when the
devices are current biased. The response found to be energy dependent making
the devices useful for applications requiring energy resolution, such as
bolometry, spectroscopy and infrared imaging.
|
[{'version': 'v1', 'created': 'Wed, 6 Mar 2019 18:07:08 GMT'}]
|
2019-07-24
|
[array(['Orchin', 'Gavin J.', ''], dtype=object)
array(['De Fazio', 'Domenico', ''], dtype=object)
array(['Di Bernardo', 'Angelo', ''], dtype=object)
array(['Hamer', 'Matthew', ''], dtype=object)
array(['Yoon', 'Duhee', ''], dtype=object)
array(['Cadore', 'Alisson R.', ''], dtype=object)
array(['Goykhman', 'Ilya', ''], dtype=object)
array(['Watanabe', 'Kenji', ''], dtype=object)
array(['Taniguchi', 'Takashi', ''], dtype=object)
array(['Robinson', 'Jason W. A.', ''], dtype=object)
array(['Gorbachev', 'Roman V.', ''], dtype=object)
array(['Ferrari', 'Andrea C.', ''], dtype=object)
array(['Hadfield', 'Robert H.', ''], dtype=object)]
|
5,523 |
2103.06570
|
Georges Neaime
|
Barbara Baumeister, Georges Neaime, Sarah Rees
|
Interval groups related to finite Coxeter groups I
| null | null | null | null |
math.GR
|
http://creativecommons.org/licenses/by/4.0/
|
We derive presentations of the interval groups related to all quasi-Coxeter
elements in the Coxeter group of type $D_n$. Type $D_n$ is the only infinite
family of finite Coxeter groups that admits proper quasi-Coxeter elements. The
presentations we obtain are over a set of generators in bijection with what we
call a Carter generating set, and the relations are those defined by the
related Carter diagram together with a twisted or a cycle commutator relator,
depending on whether the quasi-Coxeter element is a Coxeter element or not. The
proof is based on the description of two combinatorial techniques related to
the intervals of quasi-Coxeter elements.
In a subsequent work [4], we complete our analysis to cover all the
exceptional cases of finite Coxeter groups, and establish that almost all the
interval groups related to proper quasi-Coxeter elements are not isomorphic to
the related Artin groups, hence establishing a new family of interval groups
with nice presentations. Alongside the proof of the main results, we establish
important properties related to the dual approach to Coxeter and Artin groups.
|
[{'version': 'v1', 'created': 'Thu, 11 Mar 2021 09:55:29 GMT'}
{'version': 'v2', 'created': 'Fri, 4 Feb 2022 15:26:56 GMT'}]
|
2022-02-07
|
[array(['Baumeister', 'Barbara', ''], dtype=object)
array(['Neaime', 'Georges', ''], dtype=object)
array(['Rees', 'Sarah', ''], dtype=object)]
|
5,524 |
0810.2468
|
Wolfgang S\"oldner
|
Wolfgang S\"oldner (the RBC-Bielefeld and hotQCD collaborations)
|
Quark Mass Dependence of the QCD Equation of State on N_tau=8 Lattices
|
7 Pages, Talk at the XXVI International Symposium on Lattice Field
Theory July 14-19 2008, Williamsburg, Virginia, USA
|
PoS LATTICE2008:173,2008
| null | null |
hep-lat
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We currently perform calculations with an improved staggered fermion action
(p4fat3). We use a strange quark mass that has been tuned to its physical value
and light quarks of mass m_s/20 on lattices of size 32^3x8. This corresponds to
an almost physical light quark mass. We present first results on the low
temperature part of the equation of state of QCD. Through comparison with the
preliminary hotQCD results on the N_tau=8 equation of state, which have been
obtained with twice heavier light quark masses, we can quantify the quark mass
dependence of the equation of state in the low temperature regime. We also
comment on the quark mass dependence of the equation of state at high
temperature.
|
[{'version': 'v1', 'created': 'Tue, 14 Oct 2008 15:35:36 GMT'}]
|
2010-01-21
|
[array(['Söldner', 'Wolfgang', '',
'the RBC-Bielefeld and hotQCD collaborations'], dtype=object)]
|
5,525 |
1712.07008
|
Ardhendu Shekhar Tripathy
|
Ardhendu Tripathy and Ye Wang and Prakash Ishwar
|
Privacy-Preserving Adversarial Networks
|
16 pages
| null | null | null |
cs.IT cs.CR cs.GT cs.LG math.IT stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We propose a data-driven framework for optimizing privacy-preserving data
release mechanisms to attain the information-theoretically optimal tradeoff
between minimizing distortion of useful data and concealing specific sensitive
information. Our approach employs adversarially-trained neural networks to
implement randomized mechanisms and to perform a variational approximation of
mutual information privacy. We validate our Privacy-Preserving Adversarial
Networks (PPAN) framework via proof-of-concept experiments on discrete and
continuous synthetic data, as well as the MNIST handwritten digits dataset. For
synthetic data, our model-agnostic PPAN approach achieves tradeoff points very
close to the optimal tradeoffs that are analytically-derived from model
knowledge. In experiments with the MNIST data, we visually demonstrate a
learned tradeoff between minimizing the pixel-level distortion versus
concealing the written digit.
|
[{'version': 'v1', 'created': 'Tue, 19 Dec 2017 15:53:45 GMT'}
{'version': 'v2', 'created': 'Wed, 9 Jan 2019 13:49:31 GMT'}
{'version': 'v3', 'created': 'Wed, 12 Jun 2019 14:42:37 GMT'}]
|
2019-06-13
|
[array(['Tripathy', 'Ardhendu', ''], dtype=object)
array(['Wang', 'Ye', ''], dtype=object)
array(['Ishwar', 'Prakash', ''], dtype=object)]
|
5,526 |
1604.04993
|
Zibo Wang
|
Zibo Wang, Haiwen Liu, Hua Jiang and X.C.Xie
|
Numerical study of the giant nonlocal resistance in spin-orbital coupled
graphene
|
7 pages, 5 figures
|
Phys. Rev. B 94, 035409 (2016)
|
10.1103/PhysRevB.94.035409
| null |
cond-mat.mes-hall
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Recent experiments find the signal of giant nonlocal resistance $R_{NL}$ in
H-shaped graphene samples due to the spin/valley Hall effect. Interestingly,
when the Fermi energy deviates from the Dirac point, $R_{NL}$ decreases to zero
much more rapidly compared with the local resistance $R_L$, and the well-known
relation of $R_{NL}\propto R_L^3$ is not satisfied. In this work, based on the
non-equilibrium Green's function method, we explain such transport phenomena in
the H-shaped graphene with Rashba spin-orbit coupling. When the Fermi energy is
near the Dirac point, the nonlocal resistance is considerably large and is much
sharper than the local one. Moreover, the relationship between the Rashba
effect and the fast decay of $R_{NL}$ compared with $R_L$ is further
investigated. We find that the Rashba effect does not contribute not only to
the fast decay but also to the peak of $R_{NL}$ itself. Actually, it is the
extremely small density of states near the Dirac point that leads to the large
peak of $R_{NL}$, while the fast decay results from the quasi-ballistic
mechanism. Finally, we revise the classic formula $R_{NL}\propto R_L^3$ by
replacing $R_{NL}$ with $R_{Hall}$, which represents the nonlocal resistance
merely caused by the spin Hall effect, and the relation holds well.
|
[{'version': 'v1', 'created': 'Mon, 18 Apr 2016 05:38:10 GMT'}
{'version': 'v2', 'created': 'Tue, 14 Jun 2016 13:50:07 GMT'}]
|
2016-07-08
|
[array(['Wang', 'Zibo', ''], dtype=object)
array(['Liu', 'Haiwen', ''], dtype=object)
array(['Jiang', 'Hua', ''], dtype=object)
array(['Xie', 'X. C.', ''], dtype=object)]
|
5,527 |
1001.0983
|
Daria Kosenko
|
Daria Kosenko, Eveline Helder, Jacco Vink (Utrecht University)
|
The kinematics and chemical stratification of the Type Ia supernova
remnant 0519-69.0
|
Astronomy and Astrophysics in press. This version is the A&A accepted
version, which contains improved figures and an extended discussion section
| null |
10.1051/0004-6361/200913903
| null |
astro-ph.HE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present an analysis of the XMM-Newton and Chandra X-ray data of the young
Type Ia supernova remnant 0519-69.0 in the Large Magellanic Cloud. We used data
from both the Chandra ACIS and XMM-Newton EPIC-MOS instruments, and high
resolution X-ray spectra obtained with the XMM-Newton Reflection Grating
Spectrometer. The Chandra data show that there is a radial stratification of
oxygen, intermediate mass elements and iron, with the emission from more
massive elements more toward the center. Using a deprojection technique we
measure a forward shock radius of 4.0(3) pc and a reverse shock radius of
2.7(4) pc. We took the observed stratification of the shocked ejecta into
account in the modeling of the X-ray spectra with multi-component NEI models,
with the components corresponding to layers dominated by one or two elements.
An additional component was added in order to represent the ISM, which mostly
contributed to the continuum emission. This model fits the data well, and was
also employed to characterize the spectra of distinct regions extracted from
the Chandra data. From our spectral analysis we find that the fractional masses
of shocked ejecta for the most abundant elements are: M(O)=32%, M(Si/S)=7%/5%,
M(Ar+Ca)=1%, and M(Fe) = 55%. From the continuum component we derive a
circumstellar density of nH= 2.4(2)/cm^3. This density, together with the
measurements of the forward and reverse shock radii suggest an age of 450+/-200
yr,somewhat lower than, but consistent with the estimate based on the optical
light echo (600+/-200 yr). From the RGS spectra we measured a Doppler
broadening of sigma=1873+/-50 km/s, from implying a forward shock velocity of
vS = 2770+/-500 km/s. We discuss the results in the context of single
degenerate explosion models, using semi-analytical and numerical modeling, and
compare the characteristics of 0519-69.0 with those of other Type Ia supernova
remnants.
|
[{'version': 'v1', 'created': 'Thu, 7 Jan 2010 18:50:47 GMT'}
{'version': 'v2', 'created': 'Fri, 26 Mar 2010 09:20:22 GMT'}
{'version': 'v3', 'created': 'Mon, 10 May 2010 09:53:42 GMT'}]
|
2010-05-11
|
[array(['Kosenko', 'Daria', '', 'Utrecht University'], dtype=object)
array(['Helder', 'Eveline', '', 'Utrecht University'], dtype=object)
array(['Vink', 'Jacco', '', 'Utrecht University'], dtype=object)]
|
5,528 |
chao-dyn/9704007
|
Ken Umeno
|
Ken Umeno
|
Exactly solvable chaos and addition theorems of elliptic functions
|
14 pages, Latex. typos corrected, comments related to permutable
rational functions of J.F. Ritt added
|
RIMS Kokyuroku No. 1098 (1999),pp.104-117.
| null | null |
chao-dyn nlin.CD
| null |
A unified view is given to recent developments about a systematic method of
constructing rational mappings as ergodic transformations with non-uniform
invariant measures on the unit interval I=[0,1]. All of the rational ergodic
mappings of I with explicit non-uniform invariant densities can be obtained by
addition theorems of elliptic functions. It is shown here that the class of the
rational ergodic mappings I->I are essentially same as the permutable rational
functions obtained by J. F. Ritt.
|
[{'version': 'v1', 'created': 'Fri, 4 Apr 1997 16:42:59 GMT'}
{'version': 'v2', 'created': 'Fri, 11 Apr 1997 13:03:15 GMT'}
{'version': 'v3', 'created': 'Thu, 24 Dec 1998 07:34:44 GMT'}]
|
2008-02-03
|
[array(['Umeno', 'Ken', ''], dtype=object)]
|
5,529 |
1409.0162
|
Burt Rodin
|
Burt Rodin
|
Variance and the Inequality of Arithmetic and Geometric Means
|
11 pages. Version 3 removed several remarks and a corollary from
version 2
| null | null | null |
math.CA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The classical AM-GM inequality has been generalized in a number of ways.
Generalizations which incorporate variance appear to be the most useful in
economics and finance, as well as mathematically natural. Previous work leaves
unanswered the question of finding sharp bounds for the geometric mean in terms
of the arithmetic mean and variance. In this paper we prove such an inequality.
A particular consequence is easily described: among all positive sequences
having given length, arithmetic mean and nonzero variance, the geometric mean
is maximal when all terms in the sequence except one are equal to each other
and are less than the arithmetic mean.
|
[{'version': 'v1', 'created': 'Sat, 30 Aug 2014 20:45:39 GMT'}
{'version': 'v2', 'created': 'Thu, 25 Sep 2014 19:17:18 GMT'}
{'version': 'v3', 'created': 'Thu, 27 Aug 2015 19:08:44 GMT'}]
|
2015-08-28
|
[array(['Rodin', 'Burt', ''], dtype=object)]
|
5,530 |
2303.06684
|
Manh-Huong Phan
|
Supun B. Attanayake, Amit Chanda, Thomas Hulse, Raja Das, Manh-Huong
Phan, and Hariharan Srikanth
|
Competing Magnetic Interactions and Field-Induced Metamagnetic
Transition in Highly Crystalline Phase-Tunable Iron Oxide Nanorods
| null | null | null | null |
physics.app-ph cond-mat.mtrl-sci
|
http://creativecommons.org/licenses/by/4.0/
|
The inherent existence of multi phases in iron oxide nanostructures
highlights the significance of them being investigated deliberately to
understand and possibly control the phases. Here, the effects of annealing at
250 0C with a variable duration on the bulk magnetic and structural properties
of high aspect ratio bi-phase iron oxide nanorods with ferrimagnetic Fe3O4 and
antiferromagnetic alpha-Fe2O3 is explored. Increasing annealing time under a
free flow of oxygen enhanced the alpha-Fe2O3 volume fraction, and improved the
crystallinity of the Fe3O4 phase, identified in changes in the magnetization as
a function of annealing time. A critical annealing time of approximately 3
hours maximized the presence of both phases, as observed via an enhancement in
the magnetization and an interfacial pinning effect. This is attributed to
disordered spins separating the magnetically distinct phases which tend to
align with the application of a magnetic field at high temperatures. The
increased antiferromagnetic phase can be distinguished due to the field-induced
metamagnetic transitions observed in structures annealed for more than 3 hours
and was especially prominent in the 9-hour annealed sample. Our controlled
study in determining the changes in volume fractions with annealing time will
enable precise control over phase tunability in iron oxide nanorods, allowing
custom-made phase volume fractions in different applications ranging from
spintronics to biomedical applications.
|
[{'version': 'v1', 'created': 'Sun, 12 Mar 2023 15:04:55 GMT'}]
|
2023-03-14
|
[array(['Attanayake', 'Supun B.', ''], dtype=object)
array(['Chanda', 'Amit', ''], dtype=object)
array(['Hulse', 'Thomas', ''], dtype=object)
array(['Das', 'Raja', ''], dtype=object)
array(['Phan', 'Manh-Huong', ''], dtype=object)
array(['Srikanth', 'Hariharan', ''], dtype=object)]
|
5,531 |
2105.10539
|
Andrey Gogolev
|
Andrey Gogolev and Federico Rodriguez Hertz
|
Smooth rigidity for very non-algebraic Anosov diffeomorphisms of
codimension one
|
Version 2: included more results in dimension 3 and in higher
dimensions. Version 1 could still be a valuable resource for those who would
like to read the basic 3-dimensional case
| null | null | null |
math.DS
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper we introduce a new methodology for smooth rigidity of Anosov
diffeomorphisms based on "matching functions." The main observation is that
under certain bunching assumptions on the diffeomorphism the periodic cycle
functionals can provide such matching functions. For example we consider a
sufficiently small C^1 neighborhood of a linear hyperbolic automorphism of the
3-dimensional torus which has a pair of complex conjugate eigenvalues. Then we
show that two very non-algebraic (an open and dense condition) Anosov
diffeomorphisms from this neighborhood are smoothly conjugate if and only they
have matching Jacobian periodic data. We also obtain a similar result for
certain higher dimensional codimension one Anosov diffeomorphisms.
|
[{'version': 'v1', 'created': 'Fri, 21 May 2021 19:07:02 GMT'}
{'version': 'v2', 'created': 'Mon, 9 Aug 2021 17:46:39 GMT'}]
|
2021-08-10
|
[array(['Gogolev', 'Andrey', ''], dtype=object)
array(['Hertz', 'Federico Rodriguez', ''], dtype=object)]
|
5,532 |
2207.00252
|
Kristian Uldall Kristiansen
|
K. Uldall Kristiansen and P. Szmolyan
|
A dynamical systems approach to WKB-methods: The simple turning point
|
Updated. We have added extra references and improved our results
(basically, we have solved the issue raised in Remark 4.12 of the previous
version). The improvement of our result leads to improved results in our
subsequent work on the eigenvalue problem
| null | null | null |
math.DS
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper, we revisit the classical linear turning point problem for the
second order differential equation $\epsilon^2 x'' +\mu(t)x=0$ with
$\mu(0)=0,\,\mu'(0)\ne 0$ for $0<\epsilon\ll 1$. Written as a first order
system, $t=0$ therefore corresponds to a turning point connecting hyperbolic
and elliptic regimes. Our main result is that we provide an alternative
approach to WBK that is based upon dynamical systems theory, including GSPT and
blowup, and we bridge -- perhaps for the first time -- hyperbolic and elliptic
theories of slow-fast systems. As an advantage, we only require finite
smoothness of $\mu$. The approach we develop will be useful in other singular
perturbation problems with hyperbolic-to-elliptic turning points.
|
[{'version': 'v1', 'created': 'Fri, 1 Jul 2022 07:52:08 GMT'}
{'version': 'v2', 'created': 'Thu, 13 Oct 2022 19:30:18 GMT'}]
|
2022-10-17
|
[array(['Kristiansen', 'K. Uldall', ''], dtype=object)
array(['Szmolyan', 'P.', ''], dtype=object)]
|
5,533 |
1908.00754
|
Abon Chaudhuri
|
Abon Chaudhuri
|
A Visual Technique to Analyze Flow of Information in a Machine Learning
System
|
Published in Visualization and Data Analysis (VDA), part of IS&T
Electronic Imaging Symposium 2018
| null |
10.2352/ISSN.2470-1173.2018.01.VDA-380
| null |
cs.LG cs.HC stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Machine learning (ML) algorithms and machine learning based software systems
implicitly or explicitly involve complex flow of information between various
entities such as training data, feature space, validation set and results.
Understanding the statistical distribution of such information and how they
flow from one entity to another influence the operation and correctness of such
systems, especially in large-scale applications that perform classification or
prediction in real time. In this paper, we propose a visual approach to
understand and analyze flow of information during model training and serving
phases. We build the visualizations using a technique called Sankey Diagram -
conventionally used to understand data flow among sets - to address various use
cases of in a machine learning system. We demonstrate how the proposed
technique, tweaked and twisted to suit a classification problem, can play a
critical role in better understanding of the training data, the features, and
the classifier performance. We also discuss how this technique enables
diagnostic analysis of model predictions and comparative analysis of
predictions from multiple classifiers. The proposed concept is illustrated with
the example of categorization of millions of products in the e-commerce domain
- a multi-class hierarchical classification problem.
|
[{'version': 'v1', 'created': 'Fri, 2 Aug 2019 08:31:36 GMT'}]
|
2019-08-05
|
[array(['Chaudhuri', 'Abon', ''], dtype=object)]
|
5,534 |
1410.1556
|
Manuel Meyer
|
M. Meyer and J. Conrad
|
Sensitivity of the Cherenkov Telescope Array to the detection of
axion-like particles at high gamma-ray opacities
|
27 pages, 6 figures, 2 tables. Matches version published in JCAP
|
JCAP12(2014)016
|
10.1088/1475-7516/2014/12/016
| null |
astro-ph.HE hep-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Extensions of the Standard Model of particles commonly predict the existence
of axion(-like) particles (ALPs) that could be detected through their coupling
to photons in external magnetic fields. This coupling could lead to
modifications of $\gamma$-ray spectra from extragalactic sources. Above a
certain energy, the $\gamma$-ray flux should be exponentially damped due to the
interaction with photons of background radiations fields. ALPs, on the other
hand, propagate unimpeded over cosmological distances and a reconversion into
$\gamma$-rays could lead to an additional component in the spectra. Here, we
present the sensitivity of the proposed Cherenkov Telescope Array (CTA) to
detect this spectral hardening. Using the full instrumental response functions
of CTA, a combined likelihood analysis of four $\gamma$-ray sources shows that
a significant detection of the ALP signal is possible for couplings
$g_{a\gamma} \gtrsim 2\times10^{-11}\,\mathrm{GeV}^{-1}$ and ALP masses $m_a
\lesssim 100\,\mathrm{neV}$. We discuss the dependency of these values on
different model assumptions and magnetic-field scenarios and identify the best
observation strategy to search for an ALP induced boost of the $\gamma$-ray
flux.
|
[{'version': 'v1', 'created': 'Mon, 6 Oct 2014 20:07:19 GMT'}
{'version': 'v2', 'created': 'Wed, 10 Dec 2014 08:14:26 GMT'}]
|
2014-12-11
|
[array(['Meyer', 'M.', ''], dtype=object)
array(['Conrad', 'J.', ''], dtype=object)]
|
5,535 |
hep-ph/0611267
|
Stephen Adler
|
Stephen L. Adler
|
Vacuum Birefringence in a Rotating Magnetic Field
|
20 pages; v2 has simplification of results of Eqs. (9a,b), and new
Sec. 5 giving a perturbation theory derivation of results; v3 has minor
revisions suggested by referee--this is final published version; v4, typos
corrected
|
J.Phys.A40:F143-F152,2007
|
10.1088/1751-8113/40/5/F01
| null |
hep-ph
| null |
We calculate the vacuum polarization-induced ellipticity acquired by a
linearly polarized laser beam of angular frequency $\bar \omega$ on traversing
a region containing a transverse magnetic field rotating with a small angular
velocity $\Omega$ around the beam axis. The transmitted beam contains the
fundamental frequency $\bar \omega$ and weak sidebands of frequency $\bar
\omega \pm 2 \Omega$, but no other sidebands. To first order in small
quantities, the ellipticity acquired by the transmitted beam is independent of
$\Omega$, and is the same as would be calculated in the approximation of
regarding the magnetic field as fixed at its instantaneous angular orientation,
using the standard vacuum birefringence formulas for a static magnetic field.
Also to first order, there is no rotation of the polarization plane of the
transmitted beam. Analogous statements hold when the magnetic field strength is
slowly varying in time.
|
[{'version': 'v1', 'created': 'Mon, 20 Nov 2006 21:16:33 GMT'}
{'version': 'v2', 'created': 'Mon, 27 Nov 2006 15:37:41 GMT'}
{'version': 'v3', 'created': 'Sun, 17 Dec 2006 16:54:00 GMT'}
{'version': 'v4', 'created': 'Tue, 10 Apr 2007 19:09:53 GMT'}]
|
2008-11-26
|
[array(['Adler', 'Stephen L.', ''], dtype=object)]
|
5,536 |
0806.0995
|
Bj\"orn Penning
|
Bjoern Penning
|
Searching for Higgs Decaying to H->WW->mu + tau and H->WW->ee at DO
|
Contributed to 42nd Rencontres de Moriond on Electroweak Interactions
and Unified Theories, La Thuile, Italy, Mai 2007
| null | null | null |
hep-ex
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A search for the Higgs boson in H->WW->ee and H->WW->mu+tau decays in ppbar
collisions at a center-of-mass energy of sqrt(s)=1.96 TeV is presented. The
data have been collected by the Run II DO detector. In order to maximize the
sensitivity multivariate techniques such as artificial neural networks (NN),
matrix element methods and likelihoods are used. No excess above the Standard
Model background is observed and limits on the production cross section times
branching ratio for Higgs masses between 115 and 200 GeV are set.
|
[{'version': 'v1', 'created': 'Thu, 5 Jun 2008 15:54:30 GMT'}]
|
2008-06-06
|
[array(['Penning', 'Bjoern', ''], dtype=object)]
|
5,537 |
2304.11045
|
Pawan Kumar
|
Istasis Mishra, Arpan Dasgupta, Pratik Jawanpuria, Bamdev Mishra, and
Pawan Kumar
|
Light-weight Deep Extreme Multilabel Classification
|
9 pages, 2 figures, 5 tables
| null | null | null |
cs.LG cs.AI cs.IR
|
http://creativecommons.org/licenses/by/4.0/
|
Extreme multi-label (XML) classification refers to the task of supervised
multi-label learning that involves a large number of labels. Hence, scalability
of the classifier with increasing label dimension is an important
consideration. In this paper, we develop a method called LightDXML which
modifies the recently developed deep learning based XML framework by using
label embeddings instead of feature embedding for negative sampling and
iterating cyclically through three major phases: (1) proxy training of label
embeddings (2) shortlisting of labels for negative sampling and (3) final
classifier training using the negative samples. Consequently, LightDXML also
removes the requirement of a re-ranker module, thereby, leading to further
savings on time and memory requirements. The proposed method achieves the best
of both worlds: while the training time, model size and prediction times are on
par or better compared to the tree-based methods, it attains much better
prediction accuracy that is on par with the deep learning based methods.
Moreover, the proposed approach achieves the best tail-label prediction
accuracy over most state-of-the-art XML methods on some of the large
datasets\footnote{accepted in IJCNN 2023, partial funding from MAPG grant and
IIIT Seed grant at IIIT, Hyderabad, India. Code:
\url{https://github.com/misterpawan/LightDXML}
|
[{'version': 'v1', 'created': 'Thu, 20 Apr 2023 09:06:10 GMT'}]
|
2023-04-24
|
[array(['Mishra', 'Istasis', ''], dtype=object)
array(['Dasgupta', 'Arpan', ''], dtype=object)
array(['Jawanpuria', 'Pratik', ''], dtype=object)
array(['Mishra', 'Bamdev', ''], dtype=object)
array(['Kumar', 'Pawan', ''], dtype=object)]
|
5,538 |
1803.02954
|
Servando Lopez-Aguayo
|
Erick I. Duque, Servando Lopez-Aguayo, and Boris A. Malomed
|
Numerical realization of the variational method for generating
self-trapped beams
|
9 pages, 4 figures, Optics Express, to be published
| null |
10.1364/OE.26.007451
| null |
physics.optics
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We introduce a numerical variational method based on the Rayleigh-Ritz
optimization principle for predicting two-dimensional self-trapped beams in
nonlinear media. This technique overcomes the limitation of the traditional
variational approximation in performing analytical Lagrangian integration and
differentiation. Approximate soliton solutions of a generalized nonlinear
Schr\"odinger equation are obtained, demonstrating robustness of the beams of
various types (fundamental, vortices, multipoles, azimuthons) in the course of
their propagation. The algorithm offers possibilities to produce more
sophisticated soliton profiles in general nonlinear models.
|
[{'version': 'v1', 'created': 'Thu, 8 Mar 2018 03:43:18 GMT'}]
|
2018-04-04
|
[array(['Duque', 'Erick I.', ''], dtype=object)
array(['Lopez-Aguayo', 'Servando', ''], dtype=object)
array(['Malomed', 'Boris A.', ''], dtype=object)]
|
5,539 |
1908.05714
|
Roy Allen
|
Roy Allen
|
Injectivity and the Law of Demand
|
22 pages
| null | null | null |
econ.EM
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Establishing that a demand mapping is injective is core first step for a
variety of methodologies. When a version of the law of demand holds, global
injectivity can be checked by seeing whether the demand mapping is constant
over any line segments. When we add the assumption of differentiability, we
obtain necessary and sufficient conditions for injectivity that generalize
classical \cite{gale1965jacobian} conditions for quasi-definite Jacobians.
|
[{'version': 'v1', 'created': 'Thu, 15 Aug 2019 19:13:43 GMT'}]
|
2019-08-19
|
[array(['Allen', 'Roy', ''], dtype=object)]
|
5,540 |
1206.1736
|
Martin Leijnse
|
Martin Leijnse and Karsten Flensberg
|
Introduction to topological superconductivity and Majorana fermions
|
21 pages, 5 figures
|
Semicond. Sci. Technol. 27, 124003 (2012)
|
10.1088/0268-1242/27/12/124003
|
NBI CMT QDEV 2012
|
cond-mat.mes-hall cond-mat.supr-con quant-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
This short review article provides a pedagogical introduction to the rapidly
growing research field of Majorana fermions in topological superconductors. We
first discuss in some details the simplest "toy model" in which Majoranas
appear, namely a one-dimensional tight-binding representation of a p-wave
superconductor, introduced more than ten years ago by Kitaev. We then give a
general introduction to the remarkable properties of Majorana fermions in
condensed matter systems, such as their intrinsically non-local nature and
exotic exchange statistics, and explain why these quasiparticles are suspected
to be especially well suited for low-decoherence quantum information
processing. We also discuss the experimentally promising (and perhaps already
successfully realized) possibility of creating topological superconductors
using semiconductors with strong spin-orbit coupling, proximity-coupled to
standard s-wave superconductors and exposed to a magnetic field. The goal is to
provide an introduction to the subject for experimentalists or theorists who
are new to the field, focusing on the aspects which are most important for
understanding the basic physics. The text should be accessible for readers with
a basic understanding of quantum mechanics and second quantization, and does
not require knowledge of quantum field theory or topological states of matter.
|
[{'version': 'v1', 'created': 'Fri, 8 Jun 2012 11:55:07 GMT'}
{'version': 'v2', 'created': 'Fri, 16 Nov 2012 14:49:28 GMT'}]
|
2013-01-09
|
[array(['Leijnse', 'Martin', ''], dtype=object)
array(['Flensberg', 'Karsten', ''], dtype=object)]
|
5,541 |
hep-ph/9806284
|
Boris Kopeliovich
|
B.Z. Kopeliovich, B. Povh (Heidelberg)
|
Energy Dependence of the Pomeron Spin-Flip
|
A few comments and references are added. Based on invited talks at
the International Workshop on Diffraction Physics, Rio de Janeiro, February
16-20, 1998, and at DIS'98, Brussels, April 4-8, 1998
|
Mod.Phys.Lett.A13:3033-3038,1998
|
10.1142/S0217732398003223
|
MPIH-V19-1998
|
hep-ph nucl-th
| null |
There is no theoretical reason to think that the spin-flip component of the
Pomeron is zero. One can measure the spin-flip part using Coulomb-nuclear
interference (CNI). Perturbative QCD calculations show that the spin-flip
component is sensitive to the smallest quark separation in the proton, while
the non-flip part probes the largest separation. According to HERA results on
the proton structure function at very low x the energy dependence of the
cross-section correlates with the size of the color dipole. Analysing the data
from HERA we predict that the ratio of the spin-flip to non-flip amplitude
grows with energy as $r(s)\propto (1/x)^{0.1-0.2}$, violating Regge
factorisation of the Pomeron.
|
[{'version': 'v1', 'created': 'Fri, 5 Jun 1998 16:38:55 GMT'}
{'version': 'v2', 'created': 'Mon, 9 Nov 1998 11:23:20 GMT'}]
|
2011-04-15
|
[array(['Kopeliovich', 'B. Z.', '', 'Heidelberg'], dtype=object)
array(['Povh', 'B.', '', 'Heidelberg'], dtype=object)]
|
5,542 |
1509.00330
|
Mar\'ia Paz Ag\"uero
|
G.I. G\"unthardt, M.P. Ag\"uero, J.A. Camperi, R.J. D\'iaz, P.L.
Gomez, G. Bosch, M. Schirmer
|
Uncovering the nucleus candidate for NGC 253
|
Accepted for publication in Astronomical Journal
|
AJ, 150, 2015, 139
|
10.1088/0004-6256/150/5/139
| null |
astro-ph.GA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
NGC253 is the nearest spiral galaxy with a nuclear starburst which becomes
the best candidate to study the relationship between starburst and AGN
activity. However, this central region is veiled by large amounts of dust, and
it has been so far unclear which is the true dynamical nucleus. The near
infrared spectroscopy could be advantageous in order to shed light on the true
nucleus identity. Using Flamingos-2 at Gemini South we have taken deep K-band
spectra along the major axis and through the brightest infrared source. We
present evidence showing that the brightest near infrared and mid infrared
source in the central region, already known as radio source TH7 and so far
considered just a stellar supercluster, in fact, presents various symptoms of a
genuine galactic nucleus. Therefore, it should be considered a valid nucleus
candidate. It is the most massive compact infrared object in the central
region, located at 2.0" of the symmetry center of the galactic bar. Moreover,
our data indicate that this object is surrounded by a large circumnuclear
stellar disk and it is also located at the rotation center of the large
molecular gas disk of NGC 253. Furthermore, a kinematic residual appears in the
H2 rotation curve with a sinusoidal shape consistent with an outflow centered
in the candidate nucleus position. The maximum outflow velocity is located
about 14 pc from TH7, which is consistent with the radius of a shell detected
around the nucleus candidate observed at 18.3 {\mu}m (Qa) and 12.8 {\mu}m
([NeII]) with T-ReCS. Also, the Br_gamma emission line profile is blue-shifted
and this emission line has also the highest equivalent width at this position.
All these evidences point out TH7 as the best candidate to be the galactic
nucleus of NGC 253.
|
[{'version': 'v1', 'created': 'Tue, 1 Sep 2015 14:57:18 GMT'}
{'version': 'v2', 'created': 'Wed, 2 Sep 2015 15:02:51 GMT'}
{'version': 'v3', 'created': 'Mon, 26 Oct 2015 22:21:28 GMT'}]
|
2015-10-28
|
[array(['Günthardt', 'G. I.', ''], dtype=object)
array(['Agüero', 'M. P.', ''], dtype=object)
array(['Camperi', 'J. A.', ''], dtype=object)
array(['Díaz', 'R. J.', ''], dtype=object)
array(['Gomez', 'P. L.', ''], dtype=object)
array(['Bosch', 'G.', ''], dtype=object)
array(['Schirmer', 'M.', ''], dtype=object)]
|
5,543 |
1401.1861
|
Peter Breuer
|
Peter T. Breuer and Jonathan P. Bowen
|
Empirical Patterns in Google Scholar Citation Counts
|
6 pages, 8 figures, submitted to Cyberpatterns 2014
|
Proc. CyberPatterns 2014, co-located with SOSE 2014, pp. 398-403,
Apr. 2014, IEEE Comp. Soc
|
10.1109/SOSE.2014.55
| null |
cs.DL
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Scholarly impact may be metricized using an author's total number of
citations as a stand-in for real worth, but this measure varies in
applicability between disciplines. The detail of the number of citations per
publication is nowadays mapped in much more detail on the Web, exposing certain
empirical patterns. This paper explores those patterns, using the citation data
from Google Scholar for a number of authors.
|
[{'version': 'v1', 'created': 'Wed, 8 Jan 2014 23:49:44 GMT'}]
|
2018-09-06
|
[array(['Breuer', 'Peter T.', ''], dtype=object)
array(['Bowen', 'Jonathan P.', ''], dtype=object)]
|
5,544 |
1304.4225
|
Vladimir Bavula
|
V. V. Bavula
|
The group of automorphisms of the Lie algebra of derivations of a field
of rational functions
|
10 pages. arXiv admin note: substantial text overlap with
arXiv:1304.3836
| null | null | null |
math.RA math.AG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We prove that the group of automorphisms of the Lie algebra $\Der_K (Q_n)$ of
derivations of the field of rational functions $Q_n=K(x_1,..., x_n)$ over a
field of characteristic zero is canonically isomorphic to the group of
automorphisms of the $K$-algebra $Q_n$.
|
[{'version': 'v1', 'created': 'Mon, 15 Apr 2013 18:00:42 GMT'}]
|
2013-04-17
|
[array(['Bavula', 'V. V.', ''], dtype=object)]
|
5,545 |
1708.03848
|
Vojt\v{e}ch Vl\v{c}ek PhD
|
Vojtech Vlcek, Eran Rabani, Daniel Neuhauser
|
Quasiparticle spectra from molecules to bulk
|
6 pages, 4 figures
|
Phys. Rev. Materials 2, 030801 (2018)
|
10.1103/PhysRevMaterials.2.030801
| null |
cond-mat.mes-hall
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
A stochastic cumulant GW method is presented, allowing us to map the
evolution of photoemission spectra, quasiparticle energies, lifetimes and
emergence of collective excitations from molecules to bulk-like systems with up
to thousands of valence electrons, including Si nanocrystals and nanoplatelet.
The quasiparticle energies rise due to their coupling with collective shake-up
(plasmon) excitations, and this coupling leads to significant spectral weight
loss (up to 50% for the low energy states), shortening the lifetimes and
shifting the spectral features to lower energy by as much as 0.6 eV. Such
features are common to all the systems studied irrespective of their size and
shape. For small and low dimensional systems the surface plasmon resonances
affect the frequency of the collective excitation and position of the
satellites.
|
[{'version': 'v1', 'created': 'Sun, 13 Aug 2017 04:02:08 GMT'}]
|
2018-03-21
|
[array(['Vlcek', 'Vojtech', ''], dtype=object)
array(['Rabani', 'Eran', ''], dtype=object)
array(['Neuhauser', 'Daniel', ''], dtype=object)]
|
5,546 |
2104.10539
|
Zhicong Lin
|
Zhicong Lin and Jun Ma
|
A symmetry on weakly increasing trees and multiset Schett polynomials
|
This new version contains more results: 30 pages, 11 figures
| null | null | null |
math.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
By considering the parity of the degrees and levels of nodes in increasing
trees, a new combinatorial interpretation for the coefficients of the Taylor
expansions of the Jacobi elliptic functions is found. As one application of
this new interpretation, a conjecture of Ma-Mansour-Wang-Yeh is solved.
Unifying the concepts of increasing trees and plane trees, Lin-Ma-Ma-Zhou
introduced weakly increasing trees on a multiset. A symmetry joint distribution
of "even-degree nodes on odd levels" and "odd-degree nodes" on weakly
increasing trees is found, extending the Schett polynomials, a generalization
of the Jacobi elliptic functions introduced by Schett, to multisets. A
combinatorial proof and an algebraic proof of this symmetry are provided, as
well as several relevant interesting consequences. Moreover, via introducing a
group action on trees, we prove the partial $\gamma$-positivity of the multiset
Schett polynomials, a result implies both the symmetry and the unimodality of
these polynomials.
|
[{'version': 'v1', 'created': 'Wed, 21 Apr 2021 13:55:40 GMT'}
{'version': 'v2', 'created': 'Tue, 14 Sep 2021 12:28:10 GMT'}]
|
2021-09-15
|
[array(['Lin', 'Zhicong', ''], dtype=object)
array(['Ma', 'Jun', ''], dtype=object)]
|
5,547 |
1905.12331
|
Giorgio Nordo
|
Giorgio Nordo
|
Soft N-Topological Spaces
|
24 pages. arXiv admin note: text overlap with arXiv:1905.13050
| null | null | null |
math.GN
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Very recently, the idea of studying structures equipped with two or more soft
topologies has been considered by several researchers. Soft bitopological
spaces were introduced and studied, in 2014, by Ittanagi as a soft counterpart
of the notion of bitopological space and, independently, in 2015, by Naz,
Shabir and Ali. In 2017, Hassan too introduced the concept of soft
tritopological spaces and gave some first results. The notion of N-topological
space related to ordinary topological spaces was instead introduced and
studied, in 2011, by Tawfiq and Majeed. In this paper we introduce the concept
of Soft N-Topological Space as generalization both of the concepts of Soft
Topological Space and N-Topological Space and we investigate such class of
spaces and their basic properties with particular regard to their subspaces,
the parameterized families of crisp topologies generated by them and some new
separation axioms called N-wise soft T0, N-wise soft T1, and N-wise soft T2.
|
[{'version': 'v1', 'created': 'Wed, 29 May 2019 11:19:16 GMT'}]
|
2019-06-04
|
[array(['Nordo', 'Giorgio', ''], dtype=object)]
|
5,548 |
1804.03785
|
Wataru Takeda
|
Wataru Takeda
|
Uniform bounds of Piltz divisor problem over number fields
|
14 pages to appear in Pacific Journal of Mathematics
|
Pacific J. Math. 301 (2019) 601-616
|
10.2140/pjm.2019.301.601
| null |
math.NT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider the upper bound of Piltz divisor problem over number fields.
Piltz divisor problem is known as a generalization of the Dirichlet divisor
problem. We deal with this problem over number fields and improve the error
term of this function for many cases. Our proof uses the estimate of
exponential sums. We also show uniform results for ideal counting function and
relatively $r$-prime lattice points as one of applications.
|
[{'version': 'v1', 'created': 'Wed, 11 Apr 2018 02:21:38 GMT'}
{'version': 'v2', 'created': 'Tue, 2 Apr 2019 09:45:27 GMT'}]
|
2019-10-30
|
[array(['Takeda', 'Wataru', ''], dtype=object)]
|
5,549 |
2112.12759
|
L. V. Bogdanov
|
L. V. Bogdanov and Lingling Xue
|
A class of reductions of the two-component KP hierarchy and the
Hirota-Ohta system
|
12 pages, several misprints in the formulae, especially in the
Section 3, corrected. To be published in Theoretical and Mathematical Physics
| null |
10.1134/S0040577922040031
| null |
nlin.SI math-ph math.MP
|
http://creativecommons.org/licenses/by/4.0/
|
We introduce a class of reductions of the two-component KP hierarchy, which
includes the Hirota-Ohta system hierarchy. The description of the reduced
hierarchies is based on the Hirota bilinear identity and an extra bilinear
relation characterising the reduction. We derive the reduction conditions in
terms of the Lax operator and higher linear operators of the hierarchy, as well
as in terms of the basic two-component KP system of equations.
|
[{'version': 'v1', 'created': 'Thu, 23 Dec 2021 18:26:55 GMT'}
{'version': 'v2', 'created': 'Sun, 2 Jan 2022 10:57:31 GMT'}
{'version': 'v3', 'created': 'Wed, 2 Feb 2022 11:27:41 GMT'}]
|
2022-05-11
|
[array(['Bogdanov', 'L. V.', ''], dtype=object)
array(['Xue', 'Lingling', ''], dtype=object)]
|
5,550 |
2104.10999
|
Tome Eftimov
|
Tome Eftimov, Anja Jankovic, Gorjan Popovski, Carola Doerr, Peter
Koro\v{s}ec
|
Personalizing Performance Regression Models to Black-Box Optimization
Problems
|
To appear in the Proceedings of Genetic and Evolutionary Computation
Conference (GECCO 2021), ACM
| null |
10.1145/3449639.3459407
| null |
cs.NE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Accurately predicting the performance of different optimization algorithms
for previously unseen problem instances is crucial for high-performing
algorithm selection and configuration techniques. In the context of numerical
optimization, supervised regression approaches built on top of exploratory
landscape analysis are becoming very popular. From the point of view of Machine
Learning (ML), however, the approaches are often rather naive, using default
regression or classification techniques without proper investigation of the
suitability of the ML tools. With this work, we bring to the attention of our
community the possibility to personalize regression models to specific types of
optimization problems. Instead of aiming for a single model that works well
across a whole set of possibly diverse problems, our personalized regression
approach acknowledges that different models may suite different types of
problems. Going one step further, we also investigate the impact of selecting
not a single regression model per problem, but personalized ensembles. We test
our approach on predicting the performance of numerical optimization heuristics
on the BBOB benchmark collection.
|
[{'version': 'v1', 'created': 'Thu, 22 Apr 2021 11:47:47 GMT'}]
|
2021-04-23
|
[array(['Eftimov', 'Tome', ''], dtype=object)
array(['Jankovic', 'Anja', ''], dtype=object)
array(['Popovski', 'Gorjan', ''], dtype=object)
array(['Doerr', 'Carola', ''], dtype=object)
array(['Korošec', 'Peter', ''], dtype=object)]
|
5,551 |
0708.3555
|
Dmitry Dmitriev
|
D.V.Dmitriev, V.Ya.Krivnov
|
Weakly anisotropic frustrated zigzag spin chain
|
13 pages, 4 figures
|
Phys.Rev. B 77, 024401 (2008)
|
10.1103/PhysRevB.77.024401
| null |
cond-mat.str-el
| null |
The frustrated spin-1/2 model with weakly anisotropic ferromagnetic
nearest-neighbor and antiferromagnetic next-nearest-neighbor exchanges is
studied with use of variational mean-field approach, scaling estimates of the
infrared divergencies in the perturbation theory and finite-size calculations.
The ground state phase diagram of this model contains three phases: the
ferromagnetic phase, the commensurate spin-liquid phase and the incommensurate
phase. The non-trivial behavior of the boundaries between these phases and the
character of the phase transitions in case of weak anisotropy are determined.
|
[{'version': 'v1', 'created': 'Mon, 27 Aug 2007 08:59:41 GMT'}]
|
2009-11-13
|
[array(['Dmitriev', 'D. V.', ''], dtype=object)
array(['Krivnov', 'V. Ya.', ''], dtype=object)]
|
5,552 |
cond-mat/9409072
| null |
Paulo C. Marques and Antonio H. Castro Neto
|
Master Equation for a Particle Coupled to a Two-Level Reservoir
|
11 pages, RevTeX 3.0
| null |
10.1103/PhysRevB.52.10693
| null |
cond-mat
| null |
We study the quantum dissipative dynamics of a particle coupled linearly to a
set of two-level systems (the heat bath) via the master equation method which
we extract from the path integral formalism independently from the form of the
bath spectral density. We compare our results with the standard models based on
bosonic heat baths showing their main differences and similarities. In
particular, we study special forms for the spectral density of the bath which
give results quite different from the standard models.
|
[{'version': 'v1', 'created': 'Fri, 16 Sep 1994 12:05:45 GMT'}]
|
2009-10-22
|
[array(['Marques', 'Paulo C.', ''], dtype=object)
array(['Neto', 'Antonio H. Castro', ''], dtype=object)]
|
5,553 |
1304.1384
|
Nathan Uyttendaele
|
Johan Segers and Nathan Uyttendaele
|
Nonparametric estimation of the tree structure of a nested Archimedean
copula
|
25 pages, 9 figures
| null | null | null |
stat.ME
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
One of the features inherent in nested Archimedean copulas, also called
hierarchical Archimedean copulas, is their rooted tree structure. A
nonparametric, rank-based method to estimate this structure is presented. The
idea is to represent the target structure as a set of trivariate structures,
each of which can be estimated individually with ease. Indeed, for any three
variables there are only four possible rooted tree structures and, based on a
sample, a choice can be made by performing comparisons between the three
bivariate margins of the empirical distribution of the three variables. The set
of estimated trivariate structures can then be used to build an estimate of the
target structure. The advantage of this estimation method is that it does not
require any parametric assumptions concerning the generator functions at the
nodes of the tree.
|
[{'version': 'v1', 'created': 'Thu, 4 Apr 2013 14:48:36 GMT'}
{'version': 'v2', 'created': 'Tue, 17 Dec 2013 13:38:46 GMT'}]
|
2013-12-18
|
[array(['Segers', 'Johan', ''], dtype=object)
array(['Uyttendaele', 'Nathan', ''], dtype=object)]
|
5,554 |
1909.04260
|
Victor Didenko
|
Victor D. Didenko and Bernd Silbermann
|
Wiener-Hopf plus Hankel operators: Invertibility Problems
|
28 pages
| null | null | null |
math.FA
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The invertibility of Wiener-Hopf plus Hankel operators $W(a)+H(b)$ acting on
the spaces $L^p(\mathbb{R}^+)$, $1 < p<\infty$ is studied. If $a$ and $b$
belong to a subalgebra of $L^\infty(\mathbb{R})$ and satisfy the condition
\begin{equation*} a(t) a(-t)=b(t) b(-t),\quad t\in\mathbb{R},
\end{equation*} we establish necessary and also sufficient conditions for the
operators $W(a)+H(b)$ to be one-sided invertible, invertible or generalized
invertible. Besides, efficient representations for the corresponding inverses
are given.
|
[{'version': 'v1', 'created': 'Tue, 10 Sep 2019 03:25:56 GMT'}]
|
2019-09-11
|
[array(['Didenko', 'Victor D.', ''], dtype=object)
array(['Silbermann', 'Bernd', ''], dtype=object)]
|
5,555 |
astro-ph/9704048
| null |
Michal J. Chodorowski (Copernicus Astronomical Center, Poland)
|
Large-scale density from velocity expansion and shear
|
a section on comparison to N-body simulations added, matches the
version accepted for publication in MNRAS
| null |
10.1093/mnras/292.3.695
| null |
astro-ph
| null |
I derive up to second order in Eulerian perturbation theory a new relation
between the weakly nonlinear density and velocity fields. In the case of
unsmoothed fields, density at a given point turns out to be a purely local
function of the expansion (divergence) and shear of the velocity field. The
relation depends on the cosmological parameter Omega, strongly by the factor
f(Omega) = Omega^{0.6} and weakly by the factors K(Omega) and C(Omega)
proportional to Omega^{-2/63} and Omega^{-1/21} respectively. The Gramann
solution is found to be equivalent to the derived relation with the weak
Omega-dependence neglected. To make the relation applicable to the real world,
I extend it for the case of smoothed fields. The resulting formula, when
averaged over shear given divergence, reproduces up to second order the
density-velocity divergence relation of Chodorowski & Lokas; however, it has
smaller spread. It makes the formula a new attractive local estimator of
large-scale density from velocity.
|
[{'version': 'v1', 'created': 'Fri, 4 Apr 1997 14:55:15 GMT'}
{'version': 'v2', 'created': 'Thu, 4 Sep 1997 13:46:08 GMT'}]
|
2015-06-24
|
[array(['Chodorowski', 'Michal J.', '',
'Copernicus Astronomical Center, Poland'], dtype=object)]
|
5,556 |
nucl-th/0102041
|
Cetin Savkli
|
Franz Gross, Cetin Savkli, and John Tjon
|
The stability of the scalar $\chi^2\phi$ interaction
|
10 pages, 2 figures
|
Phys.Rev.D64:076008,2001
|
10.1103/PhysRevD.64.076008
|
JLAB-THY-01-07, WM-01-103
|
nucl-th
| null |
A scalar field theory with a $\chi^\dag\chi\phi$ interaction is known to be
unstable. Yet it has been used frequently without any sign of instability in
standard text book examples and research articles. In order to reconcile these
seemingly conflicting results, we show that the theory is stable if the Fock
space of all intermediate states is limited to a {\em finite} number of
$\chi{\bar\chi}$ loops associated with field $\chi$ that appears quadradically
in the interaction, and that instability arises only when intermediate states
include these loops to all orders.
|
[{'version': 'v1', 'created': 'Fri, 16 Feb 2001 21:30:21 GMT'}]
|
2014-11-18
|
[array(['Gross', 'Franz', ''], dtype=object)
array(['Savkli', 'Cetin', ''], dtype=object)
array(['Tjon', 'John', ''], dtype=object)]
|
5,557 |
1808.10456
|
Thomas Callingham
|
Thomas Callingham (Durham-ICC), Marius Cautun (Durham-ICC), Alis J.
Deason (Durham-ICC), Carlos S. Frenk (Durham-ICC), Wenting Wang (IPMU),
Facundo A. G\'omez (La Serena), Robert J. J. Grand (HITS), Federico Marinacci
(MIT), R\"udgier Pakmor (HITS)
|
The mass of the Milky Way from satellite dynamics
|
14 pages, 15 figures, submitted to MNRAS, comments are welcomed
| null |
10.1093/mnras/stz365
| null |
astro-ph.GA astro-ph.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present and apply a method to infer the mass of the Milky Way (MW) by
comparing the dynamics of MW satellites to those of model satellites in the
EAGLE cosmological hydrodynamics simulations. A distribution function (DF) for
galactic satellites is constructed from EAGLE using specific angular momentum
and specific energy, which are scaled so as to be independent of host halo
mass. In this 2-dimensional space, the orbital properties of satellite galaxies
vary according to the host halo mass. The halo mass can be inferred by
calculating the likelihood that the observed satellite population is drawn from
this DF. Our method is robustly calibrated on mock EAGLE systems. We validate
it by applying it to the completely independent suite of 30 AURIGA
high-resolution simulations of MW-like galaxies: the method accurately recovers
their true mass and associated uncertainties. We then apply it to ten classical
satellites of the MW with 6D phase-space measurements, including updated proper
motions from the GAIA satellite. The mass of the MW is estimated to be
$M_{200}^{\textnormal{MW}}=1.17_{-0.15}^{+0.21}\times10^{12}M_{\odot}$ (68\%
confidence limits). We combine our total mass estimate with recent mass
estimates in the inner regions of the Galaxy to infer an inner dark matter (DM)
mass fraction $M^\textnormal{DM}(<20~\rm{kpc})/M^\textnormal{DM}_{200}=0.12$
which is typical of ${\sim}10^{12}M_{\odot}$ $\Lambda$CDM haloes in
hydrodynamical galaxy formation simulations. Assuming an NFW profile, this is
equivalent to a halo concentration of
$c_{200}^{\textnormal{MW}}=10.9^{+2.6}_{-2.0}$.
|
[{'version': 'v1', 'created': 'Thu, 30 Aug 2018 18:00:03 GMT'}
{'version': 'v2', 'created': 'Wed, 5 Sep 2018 07:47:00 GMT'}
{'version': 'v3', 'created': 'Wed, 23 Jan 2019 11:42:17 GMT'}]
|
2019-02-13
|
[array(['Callingham', 'Thomas', '', 'Durham-ICC'], dtype=object)
array(['Cautun', 'Marius', '', 'Durham-ICC'], dtype=object)
array(['Deason', 'Alis J.', '', 'Durham-ICC'], dtype=object)
array(['Frenk', 'Carlos S.', '', 'Durham-ICC'], dtype=object)
array(['Wang', 'Wenting', '', 'IPMU'], dtype=object)
array(['Gómez', 'Facundo A.', '', 'La Serena'], dtype=object)
array(['Grand', 'Robert J. J.', '', 'HITS'], dtype=object)
array(['Marinacci', 'Federico', '', 'MIT'], dtype=object)
array(['Pakmor', 'Rüdgier', '', 'HITS'], dtype=object)]
|
5,558 |
1806.04130
|
Hannes Gernandt
|
Hannes Gernandt and Carsten Trunk
|
Locally finite extensions and Gesztesy-\v{S}eba realizations for the
Dirac operator on a metric graph
| null | null | null | null |
math.SP
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study extensions of direct sums of symmetric operators
$S=\oplus_{n\in\mathbb{N}} S_n$. In general there is no natural boundary
triplet for $S^*$ even if there is one for every $S_n^*$, $n\in\mathbb{N}$. We
consider a subclass of extensions of $S$ which can be described in terms of the
boundary triplets of $S_n^*$ and investigate the self-adjointness, the
semi-boundedness from below and the discreteness of the spectrum. Sufficient
conditions for these properties are obtained from recent results on weighted
discrete Laplacians. The results are applied to Dirac operators on metric
graphs with point interactions at the vertices. In particular, we allow graphs
with arbitrarily small edge length.
|
[{'version': 'v1', 'created': 'Mon, 11 Jun 2018 17:58:35 GMT'}]
|
2018-06-12
|
[array(['Gernandt', 'Hannes', ''], dtype=object)
array(['Trunk', 'Carsten', ''], dtype=object)]
|
5,559 |
hep-ph/0212160
|
Pawel Jankowski
|
F.Cornet (Granada U.), P.Jankowski (Warsaw U.), M.Krawczyk (Warsaw U.
& CERN), A.Lorca (Granada U. & DESY Zeuthen)
|
A New 5-Flavour LO Analysis and Parametrization of Parton Distributions
in the Real Photon
|
43 pages, RevTeX4 using axodraw style, 3 tex and 12 postscript
figures, version submitted to Phys. Rev. D, small text changes, one reference
added, FORTRAN program available at http://www.fuw.edu.pl/~pjank/param.html
and at http://www-zeuthen.desy.de/~alorca/id4.html
|
Phys.Rev.D68:014010,2003
|
10.1103/PhysRevD.68.014010
|
CERN-TH/2002-362, IFT-22/2002, UG-FT-138/02, CAFPE-8/02, DESY 02-118
|
hep-ph
| null |
New, radiatively generated, LO quark (u,d,s,c,b) and gluon densities in a
real, unpolarized photon are presented. We perform a global 3-parameter fit,
based on LO DGLAP evolution equations, to all available data for the structure
function F2^gamma(x,Q^2). We adopt a new theoretical approach called ACOT(chi),
originally introduced for the proton, to deal with the heavy-quark thresholds.
This defines our basic model (CJKL model), which gives a very good description
of the experimental data on F2^gamma(x,Q^2), for both Q^2 and x dependences.
For comparison we perform a standard fit using the Fixed Flavour-Number Scheme
(FFNS_CJKL model), updated with respect to the previous fits of this type. We
show the superiority of the CJKL fit over the FFNS_CJKL one and other LO fits
to the F2^gamma(x,Q^2) data. The CJKL model gives also the best description of
the LEP data on the Q^2 dependence of the F2^gamma, averaged over various
x-regions, and the F_2,c^gamma, which were not used directly in the fit.
Finally, a simple analytic parametrization of the resulting parton densities
obtained with the CJKL model is given.
|
[{'version': 'v1', 'created': 'Wed, 11 Dec 2002 16:54:13 GMT'}
{'version': 'v2', 'created': 'Thu, 13 Feb 2003 19:58:09 GMT'}]
|
2014-11-17
|
[array(['Cornet', 'F.', '', 'Granada U.'], dtype=object)
array(['Jankowski', 'P.', '', 'Warsaw U.'], dtype=object)
array(['Krawczyk', 'M.', '', 'Warsaw U.\n & CERN'], dtype=object)
array(['Lorca', 'A.', '', 'Granada U. & DESY Zeuthen'], dtype=object)]
|
5,560 |
2107.02761
|
Pravin Dahal
|
Pravin Kumar Dahal
|
Spin optics for gravitational waves
|
10 pages, 0 figures; Matches published version
|
Astronomy 2022, 1(3), 271-287
|
10.3390/astronomy1030016
| null |
gr-qc physics.optics
|
http://creativecommons.org/licenses/by/4.0/
|
We present the geometric optics expansion for circularly polarized
gravitational waves on a curved spacetime background, to subleading order. We
call spin optics to the subleading order geometric optics expansion, which
involves modifying the standard eikonal function by including a specially
chosen helicity-dependent correction. We show that the techniques developed for
the propagation of electromagnetic waves can also be applied to gravitational
waves in the limit of spin optics. However, one needs to account for the
difference in the photon and graviton helicity, which we do here.
|
[{'version': 'v1', 'created': 'Sun, 4 Jul 2021 11:07:02 GMT'}
{'version': 'v2', 'created': 'Mon, 26 Jul 2021 01:55:40 GMT'}
{'version': 'v3', 'created': 'Mon, 5 Dec 2022 19:13:58 GMT'}]
|
2022-12-07
|
[array(['Dahal', 'Pravin Kumar', ''], dtype=object)]
|
5,561 |
1508.05537
|
Vincenzo De Florio
|
Ning Gui and Vincenzo De Florio and Hong Sun and Chris Blondia
|
A framework for adaptive real-time applications: the declarative
real-time OSGi component model
|
Published in Proc. of the 7th workshop on Reflective and adaptive
middleware (ARM-08). Authors' version
| null |
10.1145/1462716.1462722
| null |
cs.SE
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Nowadays, more and more applications require OSGi to have some form of
real-time support, which is currently very limited. The resulting closed-system
solutions lack of a standard management scheme which forbids standard,
system-wide policies for real-time system's deployment, adaptation, and
reconfiguration. In order to tackle this problem, this paper proposes a
declarative real-time component model. In this model, the distinguishing
real-time contract of each component is declaratively described, and a general
component real-time management interface is designed. They are used to maintain
an accurate view of existing real-time components' promised contracts. A
real-time component runtime service is designed to control the whole lifecycle
of the components. By using global information and general control interface,
it can adjust the system continue to operate without impairing the deployed
components' real-time contracts in the face of run-time changes. This system
allows itself to be easily extended with other constraint resolving policies to
fit different context. The prototype has been tested into a simulated control
system. The result shows this framework can provide good real time performance
while still provides real-time component dynamicity support as well. To the
best of our knowledge, this is the first comprehensive solution providing
explicit real-time support from design to execution in OSGi framework.
|
[{'version': 'v1', 'created': 'Sat, 22 Aug 2015 18:08:22 GMT'}]
|
2015-08-25
|
[array(['Gui', 'Ning', ''], dtype=object)
array(['De Florio', 'Vincenzo', ''], dtype=object)
array(['Sun', 'Hong', ''], dtype=object)
array(['Blondia', 'Chris', ''], dtype=object)]
|
5,562 |
1812.09556
|
Stefano Bonaccorsi
|
Stefano Bonaccorsi and Luciano Tubaro and Margherita Zanella
|
Surface measures and integration by parts formula on levels sets induced
by functionals of the Brownian motion in $\mathbb R^n$
|
19 pages
|
Nonlinear Differ. Equ. Appl. 27, 27 (2020)
|
10.1007/s00030-020-00633-z
| null |
math.PR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
On the infinite dimensional space $E$ of continuous paths from $[0,1]$ to
$\mathbb R^n$, $n \ge 3$, endowed with the Wiener measure $\mu$, we construct a
surface measure defined on level sets of the $L^2$-norm of $n$-dimensional
processes that are solutions to a class of stochastic gradient system-type
equations, and provide an integration by parts formula involving this surface
measure. We follow the approach to surface measures in Gaussian spaces proposed
via techniques of Malliavin calculus by Airault and Malliavin in 1988.
|
[{'version': 'v1', 'created': 'Sat, 22 Dec 2018 16:29:02 GMT'}]
|
2020-04-28
|
[array(['Bonaccorsi', 'Stefano', ''], dtype=object)
array(['Tubaro', 'Luciano', ''], dtype=object)
array(['Zanella', 'Margherita', ''], dtype=object)]
|
5,563 |
2005.14286
|
Guo-Wei Wei
|
Kaifu Gao, Duc D Nguyen, Meihua Tu, and Guo-Wei Wei
|
Generative network complex for the automated generation of druglike
molecules
|
27 pages, 2 tables and 19 figures
| null | null | null |
q-bio.BM q-bio.QM
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Current drug discovery is expensive and time-consuming. It remains a
challenging task to create a wide variety of novel compounds with desirable
pharmacological properties and cheaply available to low-income people. In this
work, we develop a generative network complex (GNC) to generate new drug-like
molecules based on the multi-property optimization via the gradient descent in
the latent space of an autoencoder. In our GNC, both multiple chemical
properties and similarity scores are optimized to generate and predict
drug-like molecules with desired chemical properties. To further validate the
reliability of the predictions, these molecules are reevaluated and screened by
independent 2D fingerprint-based predictors to come up with a few hundreds of
new drug candidates. As a demonstration, we apply our GNC to generate a large
number of new BACE1 inhibitors, as well as thousands of novel alternative drug
candidates for eight existing market drugs, including Ceritinib, Ribociclib,
Acalabrutinib, Idelalisib, Dabrafenib, Macimorelin, Enzalutamide, and
Panobinostat.
|
[{'version': 'v1', 'created': 'Thu, 28 May 2020 20:42:16 GMT'}]
|
2020-06-01
|
[array(['Gao', 'Kaifu', ''], dtype=object)
array(['Nguyen', 'Duc D', ''], dtype=object)
array(['Tu', 'Meihua', ''], dtype=object)
array(['Wei', 'Guo-Wei', ''], dtype=object)]
|
5,564 |
1201.5716
|
James Libby
|
M. Artuso, S. Blusk, R. Mountain, T. Skwarnicki, S. Stone, L. M.
Zhang, T. Gershon, G. Bonvicini, D. Cinabro, A. Lincoln, M. J. Smith, P.
Zhou, J. Zhu, P. Naik, J. Rademacker, D. M. Asner, K. W. Edwards, K.
Randrianarivony, G. Tatishvili, R. A. Briere, H. Vogel, P. U. E. Onyisi, J.
L. Rosner, J. P. Alexander, D. G. Cassel, S. Das, R. Ehrlich, L. Gibbons, S.
W. Gray, D. L. Hartill, B. K. Heltsley, D. L. Kreinick, V. E. Kuznetsov, J.
R. Patterson, D. Peterson, D. Riley, A. Ryd, A. J. Sadoff, X. Shi, W. M. Sun,
J. Yelton, P. Rubin, N. Lowrey, S. Mehrabyan, M. Selen, J. Wiss, J. Libby, M.
Kornicer, R. E. Mitchell, D. Besson, T. K. Pedlar, D. Cronin-Hennessy, J.
Hietala, S. Dobbs, Z. Metreveli, K. K. Seth, A. Tomaradze, T. Xiao, L.
Martin, A. Powell, P. Spradlin, G. Wilkinson, J. Y. Ge, D. H. Miller, I. P.
J. Shipsey, B. Xin, G. S. Adams, J. Napolitano, K. M. Ecklund, J. Insler, H.
Muramatsu, C. S. Park, L. J. Pearson, E. H. Thorndike, S. Ricciardi, and C.
Thomas (CLEO Collaboration)
|
Amplitude analysis of D0->K+K-pi+pi-
|
40 pages, 7 figures and submitted to Phys. Rev D
|
Phys. Rev. D 85, 122002 (2012)
|
10.1103/PhysRevD.85.122002
|
CLNS 11/2082; CLEO 11-08
|
hep-ex
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The first flavor-tagged amplitude analysis of the decay D0 to the
self-conjugate final state K+K-pi+pi- is presented. Data from the CLEO II.V,
CLEO III, and CLEO-c detectors are used, from which around 3000 signal decays
are selected. The three most significant amplitudes, which contribute to the
model that best fits the data, are phirho0, K1(1270)+-K-+, and non-resonant
K+K-pi+pi-. Separate amplitude analyses of D0 and D0-bar candidates indicate no
CP violation among the amplitudes at the level of 5% to 30% depending on the
mode. In addition, the sensitivity to the CP-violating parameter gamma/phi3 of
a sample of 2000 B+ -> D0-tilde(K+K-pi+pi-)K+ decays, where D0-tilde is a D0 or
D0-bar, collected at LHCb or a future flavor facility, is estimated to be (11.3
+/- 0.3) degrees using the favored model.
|
[{'version': 'v1', 'created': 'Fri, 27 Jan 2012 08:12:25 GMT'}
{'version': 'v2', 'created': 'Fri, 29 Jun 2012 05:07:30 GMT'}]
|
2012-07-02
|
[array(['Artuso', 'M.', '', 'CLEO Collaboration'], dtype=object)
array(['Blusk', 'S.', '', 'CLEO Collaboration'], dtype=object)
array(['Mountain', 'R.', '', 'CLEO Collaboration'], dtype=object)
array(['Skwarnicki', 'T.', '', 'CLEO Collaboration'], dtype=object)
array(['Stone', 'S.', '', 'CLEO Collaboration'], dtype=object)
array(['Zhang', 'L. M.', '', 'CLEO Collaboration'], dtype=object)
array(['Gershon', 'T.', '', 'CLEO Collaboration'], dtype=object)
array(['Bonvicini', 'G.', '', 'CLEO Collaboration'], dtype=object)
array(['Cinabro', 'D.', '', 'CLEO Collaboration'], dtype=object)
array(['Lincoln', 'A.', '', 'CLEO Collaboration'], dtype=object)
array(['Smith', 'M. J.', '', 'CLEO Collaboration'], dtype=object)
array(['Zhou', 'P.', '', 'CLEO Collaboration'], dtype=object)
array(['Zhu', 'J.', '', 'CLEO Collaboration'], dtype=object)
array(['Naik', 'P.', '', 'CLEO Collaboration'], dtype=object)
array(['Rademacker', 'J.', '', 'CLEO Collaboration'], dtype=object)
array(['Asner', 'D. M.', '', 'CLEO Collaboration'], dtype=object)
array(['Edwards', 'K. W.', '', 'CLEO Collaboration'], dtype=object)
array(['Randrianarivony', 'K.', '', 'CLEO Collaboration'], dtype=object)
array(['Tatishvili', 'G.', '', 'CLEO Collaboration'], dtype=object)
array(['Briere', 'R. A.', '', 'CLEO Collaboration'], dtype=object)
array(['Vogel', 'H.', '', 'CLEO Collaboration'], dtype=object)
array(['Onyisi', 'P. U. E.', '', 'CLEO Collaboration'], dtype=object)
array(['Rosner', 'J. L.', '', 'CLEO Collaboration'], dtype=object)
array(['Alexander', 'J. P.', '', 'CLEO Collaboration'], dtype=object)
array(['Cassel', 'D. G.', '', 'CLEO Collaboration'], dtype=object)
array(['Das', 'S.', '', 'CLEO Collaboration'], dtype=object)
array(['Ehrlich', 'R.', '', 'CLEO Collaboration'], dtype=object)
array(['Gibbons', 'L.', '', 'CLEO Collaboration'], dtype=object)
array(['Gray', 'S. W.', '', 'CLEO Collaboration'], dtype=object)
array(['Hartill', 'D. L.', '', 'CLEO Collaboration'], dtype=object)
array(['Heltsley', 'B. K.', '', 'CLEO Collaboration'], dtype=object)
array(['Kreinick', 'D. L.', '', 'CLEO Collaboration'], dtype=object)
array(['Kuznetsov', 'V. E.', '', 'CLEO Collaboration'], dtype=object)
array(['Patterson', 'J. R.', '', 'CLEO Collaboration'], dtype=object)
array(['Peterson', 'D.', '', 'CLEO Collaboration'], dtype=object)
array(['Riley', 'D.', '', 'CLEO Collaboration'], dtype=object)
array(['Ryd', 'A.', '', 'CLEO Collaboration'], dtype=object)
array(['Sadoff', 'A. J.', '', 'CLEO Collaboration'], dtype=object)
array(['Shi', 'X.', '', 'CLEO Collaboration'], dtype=object)
array(['Sun', 'W. M.', '', 'CLEO Collaboration'], dtype=object)
array(['Yelton', 'J.', '', 'CLEO Collaboration'], dtype=object)
array(['Rubin', 'P.', '', 'CLEO Collaboration'], dtype=object)
array(['Lowrey', 'N.', '', 'CLEO Collaboration'], dtype=object)
array(['Mehrabyan', 'S.', '', 'CLEO Collaboration'], dtype=object)
array(['Selen', 'M.', '', 'CLEO Collaboration'], dtype=object)
array(['Wiss', 'J.', '', 'CLEO Collaboration'], dtype=object)
array(['Libby', 'J.', '', 'CLEO Collaboration'], dtype=object)
array(['Kornicer', 'M.', '', 'CLEO Collaboration'], dtype=object)
array(['Mitchell', 'R. E.', '', 'CLEO Collaboration'], dtype=object)
array(['Besson', 'D.', '', 'CLEO Collaboration'], dtype=object)
array(['Pedlar', 'T. K.', '', 'CLEO Collaboration'], dtype=object)
array(['Cronin-Hennessy', 'D.', '', 'CLEO Collaboration'], dtype=object)
array(['Hietala', 'J.', '', 'CLEO Collaboration'], dtype=object)
array(['Dobbs', 'S.', '', 'CLEO Collaboration'], dtype=object)
array(['Metreveli', 'Z.', '', 'CLEO Collaboration'], dtype=object)
array(['Seth', 'K. K.', '', 'CLEO Collaboration'], dtype=object)
array(['Tomaradze', 'A.', '', 'CLEO Collaboration'], dtype=object)
array(['Xiao', 'T.', '', 'CLEO Collaboration'], dtype=object)
array(['Martin', 'L.', '', 'CLEO Collaboration'], dtype=object)
array(['Powell', 'A.', '', 'CLEO Collaboration'], dtype=object)
array(['Spradlin', 'P.', '', 'CLEO Collaboration'], dtype=object)
array(['Wilkinson', 'G.', '', 'CLEO Collaboration'], dtype=object)
array(['Ge', 'J. Y.', '', 'CLEO Collaboration'], dtype=object)
array(['Miller', 'D. H.', '', 'CLEO Collaboration'], dtype=object)
array(['Shipsey', 'I. P. J.', '', 'CLEO Collaboration'], dtype=object)
array(['Xin', 'B.', '', 'CLEO Collaboration'], dtype=object)
array(['Adams', 'G. S.', '', 'CLEO Collaboration'], dtype=object)
array(['Napolitano', 'J.', '', 'CLEO Collaboration'], dtype=object)
array(['Ecklund', 'K. M.', '', 'CLEO Collaboration'], dtype=object)
array(['Insler', 'J.', '', 'CLEO Collaboration'], dtype=object)
array(['Muramatsu', 'H.', '', 'CLEO Collaboration'], dtype=object)
array(['Park', 'C. S.', '', 'CLEO Collaboration'], dtype=object)
array(['Pearson', 'L. J.', '', 'CLEO Collaboration'], dtype=object)
array(['Thorndike', 'E. H.', '', 'CLEO Collaboration'], dtype=object)
array(['Ricciardi', 'S.', '', 'CLEO Collaboration'], dtype=object)
array(['Thomas', 'C.', '', 'CLEO Collaboration'], dtype=object)]
|
5,565 |
1702.00789
|
William Best
|
William M. J. Best, Michael C. Liu, Eugene A. Magnier, Brendan P.
Bowler, Kimberly M. Aller, Zhoujian Zhang, Michael C. Kotson, W. S. Burgett,
K. C. Chambers, P. W. Draper, H. Flewelling, K. W. Hodapp, N. Kaiser, N.
Metcalfe, R. J. Wainscoat, C. Waters
|
A Search for L/T Transition Dwarfs With Pan-STARRS1 and WISE. III. Young
L Dwarf Discoveries and Proper Motion Catalogs in Taurus and
Scorpius-Centaurus
|
ApJ, in press. No change to the preprint. Electronic tables available
at http://www.ifa.hawaii.edu/~wbest/Will_Best/Taurus_Sco_Catalogs.html
|
ApJ, 837, 95 (2017)
|
10.3847/1538-4357/aa5df0
| null |
astro-ph.SR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We present the discovery of eight young M7-L2 dwarfs in the Taurus
star-forming region and the Scorpius-Centaurus OB Association, serendipitously
found during a wide-field search for L/T transition dwarfs using Pan-STARRS1
(optical) and WISE (mid-infrared) photometry. We identify PSO J060.3200+25.9644
(near-infrared spectral type L1) and PSO J077.1033+24.3809 (L2) as new members
of Taurus based on their VL-G gravity classifications, the consistency of their
photometry and proper motions with previously known Taurus objects, and the low
probability of contamination by field objects. PSO J077.1033+24.3809 is the
coolest substellar member of Taurus found to date. Both Taurus objects are
among the lowest mass free-floating objects ever discovered, with estimated
masses $\approx$6 M$_{\rm Jup}$, and provide further evidence that isolated
planetary-mass objects can form as part of normal star-formation processes. PSO
J060.3200+25.9644 (a.k.a. DANCe J040116.80+255752.2) was previously identified
as a likely member of the Pleiades (age $\approx125$ Myr) based on photometry
and astrometry, but its VL-G gravity classification and near-infrared
photometry imply a much younger age and thus point to Taurus membership. We
have also discovered six M7-L1 dwarfs in outlying regions of Scorpius-Centaurus
with photometry, proper motions, and low-gravity spectral signatures consistent
with membership. These objects have estimated masses $\approx$15-36 M$_{\rm
Jup}$. The M7 dwarf, PSO J237.1470-23.1489, shows excess mid-infrared flux
implying the presence of a circumstellar disk. Finally, we present catalogs of
Pan-STARRS1 proper motions for low-mass members of Taurus and Upper Scorpius
with median precisions of $\approx$3 mas yr$^{-1}$, including 67 objects with
no previous proper motion and 359 measurements that improve on literature
values.
|
[{'version': 'v1', 'created': 'Thu, 2 Feb 2017 19:00:00 GMT'}
{'version': 'v2', 'created': 'Wed, 8 Feb 2017 21:19:56 GMT'}]
|
2017-11-10
|
[array(['Best', 'William M. J.', ''], dtype=object)
array(['Liu', 'Michael C.', ''], dtype=object)
array(['Magnier', 'Eugene A.', ''], dtype=object)
array(['Bowler', 'Brendan P.', ''], dtype=object)
array(['Aller', 'Kimberly M.', ''], dtype=object)
array(['Zhang', 'Zhoujian', ''], dtype=object)
array(['Kotson', 'Michael C.', ''], dtype=object)
array(['Burgett', 'W. S.', ''], dtype=object)
array(['Chambers', 'K. C.', ''], dtype=object)
array(['Draper', 'P. W.', ''], dtype=object)
array(['Flewelling', 'H.', ''], dtype=object)
array(['Hodapp', 'K. W.', ''], dtype=object)
array(['Kaiser', 'N.', ''], dtype=object)
array(['Metcalfe', 'N.', ''], dtype=object)
array(['Wainscoat', 'R. J.', ''], dtype=object)
array(['Waters', 'C.', ''], dtype=object)]
|
5,566 |
2004.00064
|
Akshay Krishna
|
Akshay Krishna and R. N.Bhatt
|
Beyond universal behavior in the one-dimensional chain with random
nearest neighbor hopping
|
14 pages, 7 figures
|
Phys. Rev. B 101, 224203 (2020)
|
10.1103/PhysRevB.101.224203
| null |
cond-mat.dis-nn cond-mat.stat-mech
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We study the one-dimensional nearest neighbor tight binding model of
electrons with independently distributed random hopping and no on-site
potential (i.e. off-diagonal disorder with particle-hole symmetry, leading to
sub-lattice symmetry, for each realization). For non-singular distributions of
the hopping, it is known that the model exhibits a universal, singular behavior
of the density of states $\rho(E) \sim 1/|E \ln^3|E||$ and of the localization
length $\xi(E) \sim |\ln|E||$, near the band center $E = 0$. (This singular
behavior is also applicable to random XY and Heisenberg spin chains; it was
first obtained by Dyson for a specific random harmonic oscillator chain).
Simultaneously, the state at $E = 0$ shows a universal, sub-exponential decay
at large distances $\sim \exp [ -\sqrt{r/r_0} ]$. In this study, we consider
singular, but normalizable, distributions of hopping, whose behavior at small
$t$ is of the form $\sim 1/ [t \ln^{\lambda+1}(1/t) ]$, characterized by a
single, continuously tunable parameter $\lambda > 0$. We find, using a
combination of analytic and numerical methods, that while the universal result
applies for $\lambda > 2$, it no longer holds in the interval $0 < \lambda <
2$. In particular, we find that the form of the density of states singularity
is enhanced (relative to the Dyson result) in a continuous manner depending on
the non-universal parameter $\lambda$; simultaneously, the localization length
shows a less divergent form at low energies, and ceases to diverge below
$\lambda = 1$. For $\lambda < 2$, the fall-off of the $E = 0$ state at large
distances also deviates from the universal result, and is of the form $\sim
\exp [-(r/r_0)^{1/\lambda}]$, which decays faster than an exponential for
$\lambda < 1$.
|
[{'version': 'v1', 'created': 'Tue, 31 Mar 2020 19:20:18 GMT'}]
|
2020-06-16
|
[array(['Krishna', 'Akshay', ''], dtype=object)
array(['Bhatt', 'R. N.', ''], dtype=object)]
|
5,567 |
1809.09498
|
Vladimir Lisy
|
Jana Tothova and Vladimir Lisy
|
NMR measurements and all-time Brownian movement with memory
|
arXiv admin note: substantial text overlap with arXiv:1701.02486,
arXiv:1803.01544, arXiv:1803.01554
|
In: Horizons in World Physics, Editor A. Reimer. Vol. 296 (2018)
Chapter 2, p. 59-104, ISBN 978-1-53614-125-2
| null | null |
cond-mat.stat-mech
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In the present work, by using the method of accumulation of phase shifts in
the rotating frame, the attenuation function S(t) of the NMR signal from an
ensemble of spin-bearing particles in a magnetic-field gradient is expressed
through the particle mean square displacement in a form applicable for any kind
of stationary stochastic dynamics of spins and for any times. S(t) is evaluated
providing that the random motion of particles can be modeled by the generalized
Langevin equation (GLE) with a colored random force driving the particles. The
memory integral in this equation is the convolution of the particle velocity or
its acceleration with a memory kernel related to the random force by the
fluctuation-dissipation theorem. We consider three popular models of the BM
with memory: the model of viscoelastic (Maxwell) fluids with the memory
exponentially decaying in time, the fractional BM model, and the model of the
hydrodynamic BM. In all the cases the solutions of the GLEs are obtained in an
exceedingly simple way. The corresponding attenuation functions are then found
for the free-induction NMR signal and the pulsed and steady-gradient spin-echo
experiments. The results for the free-particle fractional BM compare favorably
with experiments acquired in human neuronal tissues and with the observed
subdiffusion dynamics in proteins.
|
[{'version': 'v1', 'created': 'Mon, 24 Sep 2018 08:06:17 GMT'}]
|
2018-09-26
|
[array(['Tothova', 'Jana', ''], dtype=object)
array(['Lisy', 'Vladimir', ''], dtype=object)]
|
5,568 |
1609.02991
|
Sou-Chi Chang
|
Sou-Chi Chang, Azad Naeemi, Dmitri E. Nikonov, and Alexei Gruverman
|
Theoretical Approach to Electroresistance in Ferroelectric Tunnel
Junctions
|
12 pages
|
Phys. Rev. Applied 7, 024005 (2017)
|
10.1103/PhysRevApplied.7.024005
| null |
cond-mat.mes-hall
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
In this paper, a theoretical approach, comprising the non-equilibrium Green's
function method for electronic transport and Landau-Khalatnikov equation for
electric polarization dynamics, is presented to describe polarization-dependent
tunneling electroresistance (TER) in ferroelectric tunnel junctions. Using
appropriate contact, interface, and ferroelectric parameters, measured
current-voltage characteristic curves in both inorganic
(Co/BaTiO$_{3}$/La$_{0.67}$Sr$_{0.33}$MnO$_{3}$) and organic (Au/PVDF/W)
ferroelectric tunnel junctions can be well described by the proposed approach.
Furthermore, under this theoretical framework, the controversy of opposite TER
signs observed experimentally by different groups in
Co/BaTiO$_{3}$/La$_{0.67}$Sr$_{0.33}$MnO$_{3}$ systems is addressed by
considering the interface termination effects using the effective contact
ratio, defined through the effective screening length and dielectric response
at the metal/ferroelectric interfaces. Finally, our approach is extended to
investigate the role of a CoO$_{x}$ buffer layer at the Co/BaTiO$_{3}$
interface in a ferroelectric tunnel memristor. It is shown that, to have a
significant memristor behavior, not only the interface oxygen vacancies but
also the CoO$_{x}$ layer thickness may vary with the applied bias.
|
[{'version': 'v1', 'created': 'Sat, 10 Sep 2016 02:04:09 GMT'}]
|
2017-02-15
|
[array(['Chang', 'Sou-Chi', ''], dtype=object)
array(['Naeemi', 'Azad', ''], dtype=object)
array(['Nikonov', 'Dmitri E.', ''], dtype=object)
array(['Gruverman', 'Alexei', ''], dtype=object)]
|
5,569 |
1704.02212
|
Sergei Ivanov Olegovich
|
Sergei O. Ivanov
|
On Bousfield's problem for solvable groups of finite Pr\"ufer rank
| null | null | null | null |
math.KT math.AT math.GR
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
For a group $G$ and $R=\mathbb Z,\mathbb Z/p,\mathbb Q$ we denote by $\hat
G_R$ the $R$-completion of $G.$ We study the map $H_n(G,K)\to H_n(\hat G_R,K),$
where $(R,K)=(\mathbb Z,\mathbb Z/p),(\mathbb Z/p,\mathbb Z/p),(\mathbb
Q,\mathbb Q).$ We prove that $H_2(G,K)\to H_2(\hat G_R,K)$ is an epimorphism
for a finitely generated solvable group $G$ of finite Pr\"ufer rank. In
particular, Bousfield's $HK$-localisation of such groups coincides with the
$K$-completion for $K=\mathbb Z/p,\mathbb Q.$ Moreover, we prove that
$H_n(G,K)\to H_n(\hat G_R,K)$ is an epimorphism for any $n$ if $G$ is a
finitely presented group of the form $G=M\rtimes C,$ where $C$ is the infinite
cyclic group and $M$ is a $C$-module.
|
[{'version': 'v1', 'created': 'Fri, 7 Apr 2017 12:55:57 GMT'}]
|
2017-04-10
|
[array(['Ivanov', 'Sergei O.', ''], dtype=object)]
|
5,570 |
nlin/0003032
|
Jan Wiersig
|
Jan Wiersig
|
Singular continuous spectra in a pseudo-integrable billiard
|
4 pages, 2 figures
| null |
10.1103/PhysRevE.62.R21
| null |
nlin.CD
| null |
The pseudo-integrable barrier billiard invented by Hannay and McCraw [J.
Phys. A 23, 887 (1990)] -- rectangular billiard with line-segment barrier
placed on a symmetry axis -- is generalized. It is proven that the flow on
invariant surfaces of genus two exhibits a singular continuous spectral
component.
|
[{'version': 'v1', 'created': 'Mon, 13 Mar 2000 08:20:33 GMT'}]
|
2009-10-31
|
[array(['Wiersig', 'Jan', ''], dtype=object)]
|
5,571 |
1509.03277
|
Xingru Zhang
|
Thang T. Q. Le and Xingru Zhang
|
Character varieties, A-polynomials, and the AJ Conjecture
|
24 pages
|
Algebr. Geom. Topol. 17 (2017) 157-188
|
10.2140/agt.2017.17.157
| null |
math.GT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We establish some facts about the behavior of the rational-geometric
subvariety of the $SL_2(\c)$ or $PSL_2(\c)$ character variety of a hyperbolic
knot manifold under the restriction map to the $SL_2(\c)$ or $PSL_2(\c)$
character variety of the boundary torus, and use the results to get some
properties about the A-polynomials and to prove the AJ conjecture for certain
class of knots in $S^3$ including in particular any $2$-bridge knot over which
the double branched cover of $S^3$ is a lens space of prime order.
|
[{'version': 'v1', 'created': 'Thu, 10 Sep 2015 19:00:54 GMT'}]
|
2017-02-08
|
[array(['Le', 'Thang T. Q.', ''], dtype=object)
array(['Zhang', 'Xingru', ''], dtype=object)]
|
5,572 |
quant-ph/0110105
|
Matteo G. A. Paris
|
G. M. D'Ariano, Matteo G. A Paris, and Paolo Perinotti
|
Improving quantum interferometry by using entanglement (to take a
decision you'd better use entanglement)
|
2 figs
|
Phys. Rev A vol 65 062106 (2002)
|
10.1103/PhysRevA.65.062106
| null |
quant-ph
| null |
We address the use of entanglement to improve the precision of generalized
quantum interferometry, i.e. of binary measurements aimed to determine whether
or not a perturbation has been applied by a given device. For the most relevant
operations in quantum optics, we evaluate the optimal detection strategy and
the ultimate bounds to the minimum detectable perturbation. Our results
indicate that entanglement-assisted strategies improve the discrimination in
comparison with conventional schemes. A concrete setup to approach performances
of the optimal strategies is also suggested.
|
[{'version': 'v1', 'created': 'Wed, 17 Oct 2001 11:12:10 GMT'}]
|
2007-05-23
|
[array(["D'Ariano", 'G. M.', ''], dtype=object)
array(['Paris', 'Matteo G. A', ''], dtype=object)
array(['Perinotti', 'Paolo', ''], dtype=object)]
|
5,573 |
2307.00908
|
Yaswitha Gujju Ms
|
Yaswitha Gujju, Atsushi Matsuo and Rudy Raymond
|
Quantum Machine Learning on Near-Term Quantum Devices: Current State of
Supervised and Unsupervised Techniques for Real-World Applications
|
40 pages, 8 figures
| null | null | null |
quant-ph cs.LG stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The past decade has seen considerable progress in quantum hardware in terms
of the speed, number of qubits and quantum volume which is defined as the
maximum size of a quantum circuit that can be effectively implemented on a
near-term quantum device. Consequently, there has also been a rise in the
number of works based on the applications of Quantum Machine Learning (QML) on
real hardware to attain quantum advantage over their classical counterparts. In
this survey, our primary focus is on selected supervised and unsupervised
learning applications implemented on quantum hardware, specifically targeting
real-world scenarios. Our survey explores and highlights the current
limitations of QML implementations on quantum hardware. We delve into various
techniques to overcome these limitations, such as encoding techniques, ansatz
structure, error mitigation, and gradient methods. Additionally, we assess the
performance of these QML implementations in comparison to their classical
counterparts. Finally, we conclude our survey with a discussion on the existing
bottlenecks associated with applying QML on real quantum devices and propose
potential solutions for overcoming these challenges in the future.
|
[{'version': 'v1', 'created': 'Mon, 3 Jul 2023 10:12:34 GMT'}]
|
2023-07-04
|
[array(['Gujju', 'Yaswitha', ''], dtype=object)
array(['Matsuo', 'Atsushi', ''], dtype=object)
array(['Raymond', 'Rudy', ''], dtype=object)]
|
5,574 |
1707.07566
|
Donald Lynden-Bell Prof
|
D. Lynden-Bell, S.M. Chitre
|
Does Viscosity turn inflation into the CMB and $\Lambda$
|
8 pages , 2 figures
| null | null | null |
gr-qc astro-ph.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Consideration of the entropy production in the creation of the CMB leads to a
simple model of the evolution of the universe during this period which suggests
a connection between the small observed acceleration term and the early
inflation of a closed universe. From this we find an unexpected relationship
between the Omega's of cosmology and calculate the total volume of the
universe.
|
[{'version': 'v1', 'created': 'Mon, 24 Jul 2017 14:11:47 GMT'}]
|
2017-07-25
|
[array(['Lynden-Bell', 'D.', ''], dtype=object)
array(['Chitre', 'S. M.', ''], dtype=object)]
|
5,575 |
1811.07672
|
Ryad Benjamin Benosman
|
Marco Macanovic, Fabian Chersi, Felix Rutard, Sio-Hoi Ieng, Ryad
Benosman
|
When Conventional machine learning meets neuromorphic engineering: Deep
Temporal Networks (DTNets) a machine learning frawmework allowing to operate
on Events and Frames and implantable on Tensor Flow Like Hardware
| null | null | null | null |
cs.NE cs.LG
|
http://creativecommons.org/publicdomain/zero/1.0/
|
We introduce in this paper the principle of Deep Temporal Networks that allow
to add time to convolutional networks by allowing deep integration principles
not only using spatial information but also increasingly large temporal window.
The concept can be used for conventional image inputs but also event based
data. Although inspired by the architecture of brain that inegrates information
over increasingly larger spatial but also temporal scales it can operate on
conventional hardware using existing architectures. We introduce preliminary
results to show the efficiency of the method. More in-depth results and
analysis will be reported soon!
|
[{'version': 'v1', 'created': 'Mon, 19 Nov 2018 13:32:30 GMT'}]
|
2018-11-20
|
[array(['Macanovic', 'Marco', ''], dtype=object)
array(['Chersi', 'Fabian', ''], dtype=object)
array(['Rutard', 'Felix', ''], dtype=object)
array(['Ieng', 'Sio-Hoi', ''], dtype=object)
array(['Benosman', 'Ryad', ''], dtype=object)]
|
5,576 |
1209.5175
|
Christian Bayer
|
Christian Bayer and Bezirgen Veliyev
|
Utility Maximization in a Binomial Model with transaction costs: a
Duality Approach Based on the Shadow Price Process
| null | null | null | null |
q-fin.PM
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We consider the problem of optimizing the expected logarithmic utility of the
value of a portfolio in a binomial model with proportional transaction costs
with a long time horizon. By duality methods, we can find expressions for the
boundaries of the no-trade-region and the asymptotic optimal growth rate, which
can be made explicit for small transaction costs. Here we find that, contrary
to the classical results in continuous time, the size of the no-trade-region as
well as the asymptotic growth rate depend analytically on the level of
transaction costs, implying a linear first order effect of perturbations of
(small) transaction costs. We obtain the asymptotic expansion by an almost
explicit construction of the shadow price process.
|
[{'version': 'v1', 'created': 'Mon, 24 Sep 2012 07:41:23 GMT'}]
|
2012-09-25
|
[array(['Bayer', 'Christian', ''], dtype=object)
array(['Veliyev', 'Bezirgen', ''], dtype=object)]
|
5,577 |
1902.03327
|
Jelena Bradic
|
Alexander Hanbo Li, Jelena Bradic
|
Censored Quantile Regression Forests
| null | null | null | null |
stat.ML cs.LG econ.EM stat.ME
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Random forests are powerful non-parametric regression method but are severely
limited in their usage in the presence of randomly censored observations, and
naively applied can exhibit poor predictive performance due to the incurred
biases. Based on a local adaptive representation of random forests, we develop
its regression adjustment for randomly censored regression quantile models.
Regression adjustment is based on new estimating equations that adapt to
censoring and lead to quantile score whenever the data do not exhibit
censoring. The proposed procedure named censored quantile regression forest,
allows us to estimate quantiles of time-to-event without any parametric
modeling assumption. We establish its consistency under mild model
specifications. Numerical studies showcase a clear advantage of the proposed
procedure.
|
[{'version': 'v1', 'created': 'Fri, 8 Feb 2019 23:29:50 GMT'}]
|
2019-02-12
|
[array(['Li', 'Alexander Hanbo', ''], dtype=object)
array(['Bradic', 'Jelena', ''], dtype=object)]
|
5,578 |
1312.6002
|
Mathias Berglund
|
Mathias Berglund, Tapani Raiko
|
Stochastic Gradient Estimate Variance in Contrastive Divergence and
Persistent Contrastive Divergence
|
ICLR2014 Workshop Track submission. Rephrased parts of text. Results
unchanged
| null | null | null |
cs.NE cs.LG stat.ML
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Contrastive Divergence (CD) and Persistent Contrastive Divergence (PCD) are
popular methods for training the weights of Restricted Boltzmann Machines.
However, both methods use an approximate method for sampling from the model
distribution. As a side effect, these approximations yield significantly
different biases and variances for stochastic gradient estimates of individual
data points. It is well known that CD yields a biased gradient estimate. In
this paper we however show empirically that CD has a lower stochastic gradient
estimate variance than exact sampling, while the mean of subsequent PCD
estimates has a higher variance than exact sampling. The results give one
explanation to the finding that CD can be used with smaller minibatches or
higher learning rates than PCD.
|
[{'version': 'v1', 'created': 'Fri, 20 Dec 2013 16:13:54 GMT'}
{'version': 'v2', 'created': 'Tue, 7 Jan 2014 11:27:22 GMT'}
{'version': 'v3', 'created': 'Fri, 14 Feb 2014 09:47:11 GMT'}]
|
2014-02-17
|
[array(['Berglund', 'Mathias', ''], dtype=object)
array(['Raiko', 'Tapani', ''], dtype=object)]
|
5,579 |
0811.3485
|
Kazuyasu Sugiyama
|
Kazuyasu Sugiyama and Fumio Takemura
|
Soft-lubrication effect on the lateral migration of a slightly deformed
bubble rising near a vertical plane wall
|
This paper has been withdrawn by the author
| null | null | null |
physics.flu-dyn
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Deformation-induced lateral migration of a bubble slowly rising near a
vertical plane wall in a stagnant liquid is numerically and theoretically
investigated. In particular, our focus is set on a situation with a small
clearance $c$ between the bubble interface and the wall. Motivated by the fact
that experimentally measured migration velocity (Takemura et al. (2002, J.
Fluid Mech. {\bf 461}, 277)) is higher than the velocity estimated by the
available analytical solution (Magnaudet et al. (2003, J. Fluid Mech. {\bf
476}, 115)) using the Fax\'{e}n mirror image technique for $\kappa(=a/(a+c))\ll
1$ (here $a$ is the bubble radius), when the clearance parameter
$\epsilon(=c/a)$ is comparable to or smaller than unit, the numerical analysis
based on the boundary-fitted finite-difference approach by solving the Stokes
equation is performed to complement the experiment. To improve the
understandings of a role of the squeezing flow within the bubble-wall gap, the
theoretical analysis based on a soft-lubrication approach (Skotheim & Mahadevan
(2004, Phys. Rev. Lett. {\bf 92}, 245509)) is also performed. The present
analyses demonstrate the migration velocity scales $\propto{\rm Ca}\
\epsilon^{-1}V_{B1}$ (here, $V_{B1}$ and ${\rm Ca}$ denote the rising velocity
and the capillary number, respectively) in the limit of $\epsilon\to 0$.
|
[{'version': 'v1', 'created': 'Fri, 21 Nov 2008 08:03:36 GMT'}
{'version': 'v2', 'created': 'Sun, 19 Sep 2010 06:24:38 GMT'}]
|
2010-09-21
|
[array(['Sugiyama', 'Kazuyasu', ''], dtype=object)
array(['Takemura', 'Fumio', ''], dtype=object)]
|
5,580 |
hep-ph/0202022
|
Daijiro Suematsu
|
Daijiro Suematsu
|
Neutrino mass due to the neutrino-gaugino mixing
|
11 pages, LaTeX, 2 eps-figures, Talk given at Workshop in the Corfu
Summer Institute CORFU 2001
| null | null |
KANAZAWA-02-02
|
hep-ph
| null |
We study a possibility to explain neutrino masses and mixings based on
supersymmetry. If we introduce a flavor diagonal but generation dependent extra
U(1) gauge interaction at a TeV region, we can obtain masses and mixings of
neutrinos required for the explanation of both solar and atmospheric neutrinos.
In this model, differently from the usual bilinear R-parity violating scenario,
the neutrino mass degeneracy can be resolved at a tree level by the
neutrino-gaugino mixing caused by an R-parity violation. The model is
straightforwardly extended to include the quark sector by introducing an
anomalous U(1) which can be used for the Froggatt-Nielsen mechanism.
|
[{'version': 'v1', 'created': 'Mon, 4 Feb 2002 12:34:47 GMT'}]
|
2007-05-23
|
[array(['Suematsu', 'Daijiro', ''], dtype=object)]
|
5,581 |
0712.0444
|
Shoetsu Ogata
|
Shoetsu Ogata
|
Projective normality of nonsingular toric varieties of dimension three
|
36pages, 17figures
|
Tohoku Math. J. 64 (2012), 125--140
| null | null |
math.AG math.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
We show that if an ample line bundle L on a nonsingular toric 3-fold
satisfies h^0(L+2K)=0, then L is normally generated. As an application, we show
that the anti-canonical divisor on a nonsingular toric Fano 4-fold is normally
generated.
|
[{'version': 'v1', 'created': 'Tue, 4 Dec 2007 09:18:30 GMT'}
{'version': 'v2', 'created': 'Tue, 19 May 2009 01:57:59 GMT'}
{'version': 'v3', 'created': 'Thu, 25 Feb 2010 07:13:30 GMT'}]
|
2013-10-25
|
[array(['Ogata', 'Shoetsu', ''], dtype=object)]
|
5,582 |
0709.1109
|
Konstantinos Dimopoulos
|
Konstantinos Dimopoulos
|
Density Perturbations in the Universe from Massive Vector Fields
|
In proceedings of 13th International Symposium on Particles Strings
and Cosmology, PASCOS-07, 4pp
|
AIPConf.Proc.957:387-390,2007
|
10.1063/1.2823808
| null |
hep-th astro-ph hep-ph
| null |
I discuss the possibility of using a massive vector field to generate the
density perturbation in the Universe. I find that a scale-invariant
superhorizon spectrum of vector field perturbations is possible to generate
during inflation. The associated curvature perturbation is imprinted onto the
Universe following the curvaton scenario. The mechanism does not generate a
long-range anisotropy because an oscillating massive vector field behaves as a
pressureless isotropic fluid.
|
[{'version': 'v1', 'created': 'Fri, 7 Sep 2007 16:21:31 GMT'}]
|
2008-11-26
|
[array(['Dimopoulos', 'Konstantinos', ''], dtype=object)]
|
5,583 |
2102.03525
|
Hao Lei
|
Hao Lei and Ying Chen
|
Exclusive Topic Modeling
| null | null | null | null |
stat.ML cs.IR cs.LG
|
http://creativecommons.org/licenses/by-nc-sa/4.0/
|
We propose an Exclusive Topic Modeling (ETM) for unsupervised text
classification, which is able to 1) identify the field-specific keywords though
less frequently appeared and 2) deliver well-structured topics with exclusive
words. In particular, a weighted Lasso penalty is imposed to reduce the
dominance of the frequently appearing yet less relevant words automatically,
and a pairwise Kullback-Leibler divergence penalty is used to implement topics
separation. Simulation studies demonstrate that the ETM detects the
field-specific keywords, while LDA fails. When applying to the benchmark NIPS
dataset, the topic coherence score on average improves by 22% and 10% for the
model with weighted Lasso penalty and pairwise Kullback-Leibler divergence
penalty, respectively.
|
[{'version': 'v1', 'created': 'Sat, 6 Feb 2021 07:03:15 GMT'}]
|
2021-02-09
|
[array(['Lei', 'Hao', ''], dtype=object)
array(['Chen', 'Ying', ''], dtype=object)]
|
5,584 |
nucl-th/9406036
|
Andrey M. Shirokov
|
A.M.Shirokov, Yu.F.Smirnov, and S.A.Zaytsev
|
Isolated States
|
10 pages in LaTeX including 2 figures (one figure is generated by
Latex, another one is a postscript file), 47kb including the figures.
Preprint IFUNAM FT94-49, Presented as a talk at XVII Symposium on Nuclear
Physics, Oaxtepec, Mexico, January 4-7, 1994
| null | null | null |
nucl-th hep-ph hep-th
| null |
We show that a quantum system with nonlocal interaction can have bound states
of unusual type (isolated states (IS)). IS is a bound state that do not
generate a $S$-matrix pole. IS can have positive as well as negative energy and
can be treated as a generalization of bound states embedded in continuum on the
case of discrete spectrum states. Formation of IS in the spectrum of quantum
system is studied using a simple rank--2 separable potential with harmonic
oscillator formfactors. Some physical applications are discussed, in
particular, we propose separable $NN$ potential that describes not only most
important two-nucleon data (deuteron binding energy and s-wave triplet and
singlet scattering phases) but also the trinucleon binding energy without
making use of three-body forces.
|
[{'version': 'v1', 'created': 'Thu, 30 Jun 1994 04:16:33 GMT'}]
|
2009-09-25
|
[array(['Shirokov', 'A. M.', ''], dtype=object)
array(['Smirnov', 'Yu. F.', ''], dtype=object)
array(['Zaytsev', 'S. A.', ''], dtype=object)]
|
5,585 |
hep-ph/9905307
|
Anna Stasto
|
J. Kwiecinski, A.D. Martin, A.M. Stasto
|
Penetration of the Earth by ultrahigh energy neutrinos and the parton
distributions inside the nucleon
|
Talk given by A.M.Stasto at Recontres de Moriond 99'; 4 pages, LaTeX
with 2 eps figures
| null | null | null |
hep-ph astro-ph
| null |
In this talk we would like to present recent calculations of the cross
sections for the ultrahigh energy neutrinos interacting with nucleons. We
briefly present the framework of unifed BFKL/DGLAP equations which resums all
the leading log(1/x) effects as well as the subleading terms. The few free
parameters which specify the input parton distributions are determined by
fitting to HERA deep inelastic data. We then use these parton distributions to
calculate the cross section for the neutrino-nucleon interactions at very high
energies, up to 10^12 GeV.
We do also investigate the attenuation of neutrinos when traversing through
the Earth. We use the transport equation which we solve for different fluxes of
high energy neutrinos (Active Galactic Nucleai, Gamma Ray Bursts, and top-down
models). We study the effects of the regeneration of the neutrino flux via
neutral current interaction.
|
[{'version': 'v1', 'created': 'Tue, 11 May 1999 18:34:56 GMT'}]
|
2007-05-23
|
[array(['Kwiecinski', 'J.', ''], dtype=object)
array(['Martin', 'A. D.', ''], dtype=object)
array(['Stasto', 'A. M.', ''], dtype=object)]
|
5,586 |
2305.09406
|
Thom\'as Jung Spier
|
Gabriel Coutinho, Emanuel Juliano, Thom\'as Jung Spier
|
The spectrum of symmetric decorated paths
| null | null | null | null |
math.CO
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The main result of this paper states that in a rooted product of a path with
rooted graphs which are disposed in a somewhat mirror-symmetric fashion, there
are distinct eigenvalues supported in the end vertices of the path which are
too close to each other: their difference is smaller than the square root of
two in the even distance case, and smaller than one in the odd distance case.
As a first application, we show that these end vertices cannot be involved in a
quantum walk phenomenon known as perfect state transfer, significantly
strengthening a recent result by two of the authors along with Godsil and van
Bommel. For a second application, we show that there is no balanced integral
tree of odd diameter bigger than three, answering a question raised by H\'{i}c
and Nedela in 1998. Our main technique involves manipulating ratios of
characteristic polynomials of graphs and subgraphs into continued fractions,
and exploring in detail their analytic properties. We will also make use of a
result due to P\'{o}lya and Szeg\"{o} about functions that preserve the
Lebesgue measure, which as far as we know is a novel application to
combinatorics. In the end, we connect our machinery to a recently introduced
algorithm to locate eigenvalues of trees, and with our approach we show that
any graph which contains two vertices separated by a unique path that is the
subdivision of a bridge with at least six inner vertices cannot be integral. As
a minor corollary this implies that most trees are not integral, but we believe
no one thought otherwise.
|
[{'version': 'v1', 'created': 'Tue, 16 May 2023 12:51:30 GMT'}]
|
2023-05-17
|
[array(['Coutinho', 'Gabriel', ''], dtype=object)
array(['Juliano', 'Emanuel', ''], dtype=object)
array(['Spier', 'Thomás Jung', ''], dtype=object)]
|
5,587 |
2006.05316
|
Amir Karami
|
Mackenzie Anderson, Amir Karami, Parisa Bozorgi
|
Social Media and COVID-19: Can Social Distancing be Quantified without
Measuring Human Movements?
| null | null | null | null |
cs.SI physics.soc-ph
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The COVID-19 outbreak has posed significant threats to international health
and the economy. In the absence of treatment for this virus, public health
officials asked the public to practice social distancing to reduce the number
of physical contacts. However, quantifying social distancing is a challenging
task and current methods are based on human movements. We propose a time and
cost-effective approach to measure how people practice social distancing. This
study proposes a new method based on utilizing the frequency of hashtags
supporting and encouraging social distancing for measuring social distancing.
We have identified 18 related hashtags and tracked their trends between Jan and
May 2020. Our evaluation results show that there is a strong correlation
(P<0.05) between our findings and the Google social distancing report.
|
[{'version': 'v1', 'created': 'Sat, 6 Jun 2020 15:45:17 GMT'}]
|
2020-06-11
|
[array(['Anderson', 'Mackenzie', ''], dtype=object)
array(['Karami', 'Amir', ''], dtype=object)
array(['Bozorgi', 'Parisa', ''], dtype=object)]
|
5,588 |
1601.06587
|
Alexandre Zagoskin
|
A.M. Zagoskin, Didier Felbacq, Emmanuel Rousseau
|
Quantum metamaterials in the microwave and optical ranges
| null | null |
10.1140/epjqt/s40507-016-0040-x
| null |
quant-ph cond-mat.supr-con physics.optics
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Quantum metamaterials generalize the concept of metamaterials (artificial
optical media) to the case when their optical properties are determined by the
interplay of quantum effects in the constituent 'artificial atoms' with the
electromagnetic field modes in the system. The theoretical investigation of
these structures demonstrated that a number of new effects (such as quantum
birefringence, strongly nonclassical states of light, etc) are to be expected,
prompting the efforts on their fabrication and experimental investigation. Here
we provide a summary of the principal features of quantum metamaterials and
review the current state of research in this quickly developing field, which
bridges quantum optics, quantum condensed matter theory and quantum information
processing.
|
[{'version': 'v1', 'created': 'Mon, 25 Jan 2016 13:01:12 GMT'}]
|
2016-05-18
|
[array(['Zagoskin', 'A. M.', ''], dtype=object)
array(['Felbacq', 'Didier', ''], dtype=object)
array(['Rousseau', 'Emmanuel', ''], dtype=object)]
|
5,589 |
2306.15850
|
Santhosh Kumar Ramakrishnan
|
Santhosh Kumar Ramakrishnan, Ziad Al-Halah, Kristen Grauman
|
SpotEM: Efficient Video Search for Episodic Memory
|
Published in ICML 2023
| null | null | null |
cs.CV
|
http://creativecommons.org/licenses/by/4.0/
|
The goal in episodic memory (EM) is to search a long egocentric video to
answer a natural language query (e.g., "where did I leave my purse?"). Existing
EM methods exhaustively extract expensive fixed-length clip features to look
everywhere in the video for the answer, which is infeasible for long
wearable-camera videos that span hours or even days. We propose SpotEM, an
approach to achieve efficiency for a given EM method while maintaining good
accuracy. SpotEM consists of three key ideas: 1) a novel clip selector that
learns to identify promising video regions to search conditioned on the
language query; 2) a set of low-cost semantic indexing features that capture
the context of rooms, objects, and interactions that suggest where to look; and
3) distillation losses that address the optimization issues arising from
end-to-end joint training of the clip selector and EM model. Our experiments on
200+ hours of video from the Ego4D EM Natural Language Queries benchmark and
three different EM models demonstrate the effectiveness of our approach:
computing only 10% - 25% of the clip features, we preserve 84% - 97% of the
original EM model's accuracy. Project page:
https://vision.cs.utexas.edu/projects/spotem
|
[{'version': 'v1', 'created': 'Wed, 28 Jun 2023 00:52:49 GMT'}]
|
2023-06-29
|
[array(['Ramakrishnan', 'Santhosh Kumar', ''], dtype=object)
array(['Al-Halah', 'Ziad', ''], dtype=object)
array(['Grauman', 'Kristen', ''], dtype=object)]
|
5,590 |
astro-ph/0504138
|
Diana Worrall
|
D.M. Worrall & M. Birkinshaw (Dept. of Physics, University of Bristol)
|
X-ray synchrotron emission from the oblique shock in the jet of the
powerful radio galaxy 3C 346
|
Accepted for publication in the MNRAS. 9 pages
|
Mon.Not.Roy.Astron.Soc. 360 (2005) 921-925
|
10.1111/j.1365-2966.2005.09082.x
| null |
astro-ph
| null |
We report the first detection, with Chandra, of X-ray emission from the jet
of the powerful narrow-line radio galaxy 3C 346. X-rays are detected from the
bright radio and optical knot at which the jet apparently bends by about 70
degrees. The Chandra observation also reveals a bright galaxy-scale atmosphere
within the previously-known cluster, and provides a good X-ray spectrum for the
bright core of 3C 346. The X-ray emission from the knot is synchrotron
radiation, as seen in lower-power sources. In common with these sources, there
is evidence of morphological differences between the radio/optical and X-ray
structures, and the spectrum is inconsistent with a one-component
continuous-injection model. We suggest that the X-ray-bright knot is associated
with a strong oblique shock in a moderately relativistic, light jet, at about
20 degrees to the line of sight, and that this shock is caused by the jet
interacting with the wake in the cluster medium behind 3C 346's companion
galaxy. The general jet curvature can result from pressure gradients in the
cluster atmosphere.
|
[{'version': 'v1', 'created': 'Wed, 6 Apr 2005 09:21:10 GMT'}]
|
2009-11-10
|
[array(['Worrall', 'D. M.', '', 'Dept. of Physics, University of Bristol'],
dtype=object)
array(['Birkinshaw', 'M.', '', 'Dept. of Physics, University of Bristol'],
dtype=object) ]
|
5,591 |
1203.6343
|
Nakwoo Kim
|
Hyojoong Kim, Nakwoo Kim, Jung Hun Lee
|
One-loop corrections to holographic Wilson loop in AdS4xCP3
|
14pages, 1 fig. v3. Major revision. Due to an error in previous
version, the calculation is largely re-done
| null |
10.3938/jkps.61.713
| null |
hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The evaluation of BPS Wilson loops in N=6, D=3 Chern-Simons matter theory is
reduced to ordinary matrix integrals via localization technique. It is easy to
check that the vacuum expectation value of 1/2 BPS Wilson loops at leading
order in planar limit agrees with the regularized classical string action, via
AdS/CFT. Then the subleading terms in principle can be calculated by treating
the string theory semi-classically. In this article we calculate the one-loop
determinant for fluctuation modes of holographic Wilson loop in the dual
geometry AdS4xCP3. The fermionic normal mode frequencies are expressed in terms
of the hypergeometric function, and we compute the one-loop effective action
numerically. The discrepancy with localization formula is due to the zero mode
normalization constant, which is yet to be determined.
|
[{'version': 'v1', 'created': 'Wed, 28 Mar 2012 19:18:30 GMT'}
{'version': 'v2', 'created': 'Fri, 30 Mar 2012 22:03:35 GMT'}
{'version': 'v3', 'created': 'Sun, 13 May 2012 01:37:23 GMT'}]
|
2015-06-04
|
[array(['Kim', 'Hyojoong', ''], dtype=object)
array(['Kim', 'Nakwoo', ''], dtype=object)
array(['Lee', 'Jung Hun', ''], dtype=object)]
|
5,592 |
2303.13580
|
Damian Van De Heisteeg
|
Damian van de Heisteeg, Cumrun Vafa, Max Wiesner
|
Bounds on Species Scale and the Distance Conjecture
|
22 pages, 5 figures
| null | null | null |
hep-th
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The species scale $\Lambda_s\leq M_{pl}$ serves as a UV cutoff in the
gravitational sector of an EFT and can depend on the moduli of the theory as
the spectrum of the theory varies. We argue that the dependence of the species
scale $\Lambda_s (\phi)$ on massless (or light) modes $\phi^i$ satisfies
$M_{pl}^{d-2} |\Lambda_s'/\Lambda_s|^2< \mathcal{O}(1)$. This bound is true at
all points in moduli space including also its interior. The argument is based
on the idea that the short distance contribution of massless modes to
gravitational terms in the EFT cannot dramatically affect the black hole
entropy. Based on string theory arguments we expect the $\mathcal{O}(1)$
constant in this bound to be equal to ${1\over {d-2}}$ as we approach the
boundary of the moduli space. However, we find that the slope of the species
scale can approach its asymptotic value from above as we go from interior
points to the boundaries, thereby implying that the constant in the bound must
be larger than ${1\over {d-2}}$. The bound on the variation of the species
scale also implies that the mass of towers of light modes cannot go to zero
faster than exponential in field distance in accordance with the Distance
Conjecture.
|
[{'version': 'v1', 'created': 'Thu, 23 Mar 2023 18:00:06 GMT'}]
|
2023-03-27
|
[array(['van de Heisteeg', 'Damian', ''], dtype=object)
array(['Vafa', 'Cumrun', ''], dtype=object)
array(['Wiesner', 'Max', ''], dtype=object)]
|
5,593 |
1605.01878
|
Radhakrishna Vangipuram
|
Vangipuram Radhakrishna
|
Design and Analysis of Novel Kernel Measure for Software Fault
Localization
|
ICEMIS '15: Proceedings of the The International Conference on
Engineering & MIS 2015
| null |
10.1145/2832987.2833042
| null |
cs.SE
|
http://creativecommons.org/licenses/by-nc-sa/4.0/
|
The problem of software fault localization may be viewed as an approach for
finding hidden faults or bugs in the existing program codes which are
syntactically correct and give fault free output for some input instances but
fail for all other input instances. Some of the reasons include logical errors,
wrong interpretation of specification, coding errors. Finding such faults is
not possible sometimes with the help of compilers. This is where the necessity
and significance of software fault localization stems out. The main
contribution for this work is to first introduce the block hit-miss function
which relates block vectors of execution sequences of software code over sample
runs performed and the decision vector which denotes fault or error free
output. The similarity measure is applied to the block vector and decision
vectors as input and the pair with maximum similarity is considered as faulty
block.
|
[{'version': 'v1', 'created': 'Fri, 6 May 2016 10:11:30 GMT'}]
|
2016-05-09
|
[array(['Radhakrishna', 'Vangipuram', ''], dtype=object)]
|
5,594 |
2010.11422
|
Ildoo Kim
|
Ildoo Kim, Younghoon Kim, Sungwoong Kim
|
Learning Loss for Test-Time Augmentation
|
Accepted at NeurIPS 2020
| null | null | null |
cs.CV cs.AI cs.LG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Data augmentation has been actively studied for robust neural networks. Most
of the recent data augmentation methods focus on augmenting datasets during the
training phase. At the testing phase, simple transformations are still widely
used for test-time augmentation. This paper proposes a novel instance-level
test-time augmentation that efficiently selects suitable transformations for a
test input. Our proposed method involves an auxiliary module to predict the
loss of each possible transformation given the input. Then, the transformations
having lower predicted losses are applied to the input. The network obtains the
results by averaging the prediction results of augmented inputs. Experimental
results on several image classification benchmarks show that the proposed
instance-aware test-time augmentation improves the model's robustness against
various corruptions.
|
[{'version': 'v1', 'created': 'Thu, 22 Oct 2020 03:56:34 GMT'}]
|
2020-10-23
|
[array(['Kim', 'Ildoo', ''], dtype=object)
array(['Kim', 'Younghoon', ''], dtype=object)
array(['Kim', 'Sungwoong', ''], dtype=object)]
|
5,595 |
1710.00760
|
Majdi Khalid
|
Majdi Khalid, Indrakshi Ray, and Hamidreza Chitsaz
|
Scalable Nonlinear AUC Maximization Methods
| null | null | null | null |
cs.LG
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
The area under the ROC curve (AUC) is a measure of interest in various
machine learning and data mining applications. It has been widely used to
evaluate classification performance on heavily imbalanced data. The kernelized
AUC maximization machines have established a superior generalization ability
compared to linear AUC machines because of their capability in modeling the
complex nonlinear structure underlying most real-world data. However, the high
training complexity renders the kernelized AUC machines infeasible for
large-scale data. In this paper, we present two nonlinear AUC maximization
algorithms that optimize pairwise linear classifiers over a finite-dimensional
feature space constructed via the k-means Nystr\"{o}m method. Our first
algorithm maximize the AUC metric by optimizing a pairwise squared hinge loss
function using the truncated Newton method. However, the second-order batch AUC
maximization method becomes expensive to optimize for extremely massive
datasets. This motivate us to develop a first-order stochastic AUC maximization
algorithm that incorporates a scheduled regularization update and scheduled
averaging techniques to accelerate the convergence of the classifier.
Experiments on several benchmark datasets demonstrate that the proposed AUC
classifiers are more efficient than kernelized AUC machines while they are able
to surpass or at least match the AUC performance of the kernelized AUC
machines. The experiments also show that the proposed stochastic AUC classifier
outperforms the state-of-the-art online AUC maximization methods in terms of
AUC classification accuracy.
|
[{'version': 'v1', 'created': 'Mon, 2 Oct 2017 16:28:35 GMT'}
{'version': 'v2', 'created': 'Tue, 27 Mar 2018 19:24:33 GMT'}
{'version': 'v3', 'created': 'Sun, 9 Sep 2018 00:30:18 GMT'}
{'version': 'v4', 'created': 'Mon, 29 Apr 2019 05:26:04 GMT'}]
|
2019-04-30
|
[array(['Khalid', 'Majdi', ''], dtype=object)
array(['Ray', 'Indrakshi', ''], dtype=object)
array(['Chitsaz', 'Hamidreza', ''], dtype=object)]
|
5,596 |
1905.06600
|
Xiangxiang Xu
|
Shao-Lun Huang, Xiangxiang Xu, Lizhong Zheng, Gregory W. Wornell
|
An Information Theoretic Interpretation to Deep Neural Networks
|
Accepted to ISIT 2019
| null | null | null |
cs.IT cs.LG math.IT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
It is commonly believed that the hidden layers of deep neural networks (DNNs)
attempt to extract informative features for learning tasks. In this paper, we
formalize this intuition by showing that the features extracted by DNN coincide
with the result of an optimization problem, which we call the `universal
feature selection' problem, in a local analysis regime. We interpret the
weights training in DNN as the projection of feature functions between feature
spaces, specified by the network structure. Our formulation has direct
operational meaning in terms of the performance for inference tasks, and gives
interpretations to the internal computation results of DNNs. Results of
numerical experiments are provided to support the analysis.
|
[{'version': 'v1', 'created': 'Thu, 16 May 2019 08:43:39 GMT'}]
|
2019-05-17
|
[array(['Huang', 'Shao-Lun', ''], dtype=object)
array(['Xu', 'Xiangxiang', ''], dtype=object)
array(['Zheng', 'Lizhong', ''], dtype=object)
array(['Wornell', 'Gregory W.', ''], dtype=object)]
|
5,597 |
1906.10597
|
Wei Nie
|
Wei Nie and Yu-xi Liu
|
Bandgap-Assisted Quantum Control of Topological Edge States in a Cavity
|
7+15 pages, 5+11 figures, will appear in Physical Review Research
|
Phys. Rev. Research 2, 012076 (2020)
|
10.1103/PhysRevResearch.2.012076
| null |
quant-ph cond-mat.mes-hall
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Quantum matter with exotic topological order has potential applications in
quantum computation. However, in present experiments, the manipulations on
topological states are still challenging. We here propose an architecture for
optical control of topological matter. We consider a topological
superconducting qubit array with Su-Schrieffer-Heeger (SSH) Hamiltonian which
couples to a microwave cavity. Based on parity properties of the topological
qubit array, we propose an optical spectroscopy method to observe topological
phase transition, i.e., edge-to-bulk transition. This new method can be
achieved by designing cavity-qubit couplings. A main purpose of this work is to
understand how topological phase transition affects light-matter interaction.
We find that topological bandgap plays an essential role on this issue. In
topological phase, the resonant vacuum Rabi splitting of degenerate edge states
coupling to the cavity field is protected from those of bulk states by the
bandgap. In dispersive regime, the cavity induced coupling between edge states
is dominant over couplings between edge and bulk states, due to the topological
bandgap. As a result, quantum interference between topological edge states
occures and enables single-photon transport through boundaries of the
topological qubit array. Our work may pave a way for topological quantum state
engineering.
|
[{'version': 'v1', 'created': 'Tue, 25 Jun 2019 15:16:10 GMT'}
{'version': 'v2', 'created': 'Mon, 2 Mar 2020 13:46:04 GMT'}]
|
2020-03-26
|
[array(['Nie', 'Wei', ''], dtype=object)
array(['Liu', 'Yu-xi', ''], dtype=object)]
|
5,598 |
0805.4483
|
Goncalo Tabuada
|
Goncalo Tabuada
|
Postnikov towers, k-invariants and obstruction theory for DG categories
|
27 pages
| null | null | null |
math.KT math.AT
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
By inspiring ourselves in Drinfeld's DG quotient, we develop Postnikov
towers, k-invariants and an obstruction theory for dg categories. As an
application, we obtain the following `rigidification' theorem: let A be a
homologically connective dg category and F:B -> H0(A) a dg functor to its
homotopy category. If the family of obstruction classes vanishes, then a lift
for F exists.
|
[{'version': 'v1', 'created': 'Thu, 29 May 2008 08:44:57 GMT'}]
|
2008-05-30
|
[array(['Tabuada', 'Goncalo', ''], dtype=object)]
|
5,599 |
2305.16040
|
Sofoklis Kakouros
|
Martti Vainio, Antti Suni, Juraj \v{S}imko, Sofoklis Kakouros
|
The Power of Prosody and Prosody of Power: An Acoustic Analysis of
Finnish Parliamentary Speech
| null | null | null | null |
eess.AS
|
http://arxiv.org/licenses/nonexclusive-distrib/1.0/
|
Parliamentary recordings provide a rich source of data for studying how
politicians use speech to convey their messages and influence their audience.
This provides a unique context for studying how politicians use speech,
especially prosody, to achieve their goals. Here we analyzed a corpus of
parliamentary speeches in the Finnish parliament between the years 2008-2020
and highlight methodological considerations related to the robustness of signal
based features with respect to varying recording conditions and corpus design.
We also present results of long term changes pertaining to speakers' status
with respect to their party being in government or in opposition. Looking at
large scale averages of fundamental frequency - a robust prosodic feature - we
found systematic changes in speech prosody with respect opposition status and
the election term. Reflecting a different level of urgency, members of the
parliament have higher f0 at the beginning of the term or when they are in
opposition.
|
[{'version': 'v1', 'created': 'Thu, 25 May 2023 13:18:41 GMT'}]
|
2023-05-26
|
[array(['Vainio', 'Martti', ''], dtype=object)
array(['Suni', 'Antti', ''], dtype=object)
array(['Šimko', 'Juraj', ''], dtype=object)
array(['Kakouros', 'Sofoklis', ''], dtype=object)]
|
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