Showing 2015Show all

681 papers · 1 filter

physics.optics2015

A highly scalable fully non-blocking silicon photonic switch fabric

Dessislava Nikolova, David M. Calhoun, Yang Liu +5

Large port count spatial optical switches will facilitate flexible and energy efficient data movement in future data communications systems, especially if they are capable of nanos…

astro-ph.SR2015

A Survey for hot Central Stars of Planetary Nebulae I. Methods and First Results

Graham C. Kanarek, Michael M. Shara, Jacqueline K. Faherty +2

We present the results of initial spectrographic followup with the Very Large Telescope (UT3, Melipal) for Galactic plane CIV emission-line candidates in the near-infr…

hep-lat2015★ 82 cited

Calculation of the hadronic vacuum polarization disconnected contribution to the muon anomalous magnetic moment

T. Blum, P. A. Boyle, T. Izubuchi +7

We report the first lattice QCD calculation of the hadronic vacuum polarization disconnected contribution to the muon anomalous magnetic moment at physical pion mass. The calculati…

astro-ph.SR2015★ 24 cited

Accretion-disc precession in UX Ursae Majoris

E. de Miguel, J. Patterson, D. Cejudo +25

We report the results of a long campaign of time-series photometry on the nova-like variable UX Ursae Majoris during 2015. It spanned 150 nights, with ~1800 hours of coverage on 12…

hep-th2015★ 21 cited

On Instanton Superpotentials, Calabi-Yau Geometry, and Fibrations

Lara B. Anderson, Fabio Apruzzi, Xin Gao +2

In this paper we explore contributions to non-perturbative superpotentials arising from instantons wrapping effective divisors in smooth Calabi-Yau four-folds. We concentrate on th…

cond-mat.str-el2015★ 30 cited

Ferromagnetism and correlation strength in cubic barium ruthenate in comparison to strontium and calcium ruthenate: a dynamical mean field study

Qiang Han, Hung T. Dang, A. J. Millis

We present density functional plus dynamical mean field studies of cubic BaRuO using interaction parameters previously found to be appropriate for the related materials CaRuO$_…

nucl-th2015

Long wavelength perfect fluidity from short distance jet transport in quark-gluon plasmas

Jiechen Xu, Jinfeng Liao, Miklos Gyulassy

We build a new phenomenological framework that bridges the long wavelength bulk viscous transport properties of the strongly-coupled quark-gluon plasma (sQGP) and short distance ha…

nucl-th2015★ 15 cited

The unreasonable effectiveness of hydrodynamics in heavy ion collisions

Jacquelyn Noronha-Hostler, Jorge Noronha, Miklos Gyulassy

Event-by-event hydrodynamic simulations of AA and pA collisions involve initial energy densities with large spatial gradients. This is associated with the presence of large Knudsen…

astro-ph.GA2015★ 13 cited

Evidence of Fanning in the Ophiuchus Stream

B. Sesar, A. M. Price-Whelan, J. G. Cohen +11

The Ophiuchus stellar stream presents a dynamical puzzle: its old stellar populations ( Gyr) cannot be reconciled with (1) its orbit in a simple model for the Milky Way po…

physics.atom-ph2015★ 46 cited

BaH molecular spectroscopy with relevance to laser cooling

M. G. Tarallo, G. Z. Iwata, T. Zelevinsky

We describe a simple experimental apparatus for laser ablation of barium monohydride (BaH) molecules and the study of their rovibrational spectra that are relevant to direct laser…

astro-ph.GA2015★ 2 cited

The Sizes of Globular Clusters as Tracers of Galactic Halo Potentials

Akram Hasani Zonoozi, Malihe Rabiee, Hosein Haghi +1

We present -body simulations of globular clusters, exploring the effect of different galactic potentials on cluster sizes, . For various galactocentric distances, , we…

math.NA2015★ 1 cited

A Petrov-Galerkin Finite Element Method for Fractional Convection-Diffusion Equations

Bangti Jin, Raytcho Lazarov, Zhi Zhou

In this work, we develop variational formulations of Petrov-Galerkin type for one-dimensional fractional boundary value problems involving either a Riemann-Liouville or Caputo deri…

cs.HC2015★ 18 cited

Breaking the Barriers to True Augmented Reality

Christian Sandor, Martin Fuchs, Alvaro Cassinelli +4

In recent years, Augmented Reality (AR) and Virtual Reality (VR) have gained considerable commercial traction, with Facebook acquiring Oculus VR for $2 billion, Magic Leap attract…

astro-ph.HE2015★ 232 cited

Electromagnetic Signatures of Neutron Star Mergers in the Advanced LIGO Era

Rodrigo Fernández, Brian D. Metzger

The mergers of binaries containing neutron stars and stellar-mass black holes are the most promising sources for direct detection in gravitational waves by the interferometers Adva…

cond-mat.mes-hall2015★ 13 cited

Optical emission spectroscopy study of competing phases of electrons in the second Landau level

A. L. Levy, U. Wurstbauer, Y. Y. Kuznetsova +6

Quantum phases of electrons in the filling factor range are probed by the weak optical emission from the partially populated second Landau level and spin wave measu…

astro-ph.HE2015★ 99 cited

Gamma rays from the quasar PKS 1441+25: story of an escape

A. U. Abeysekara, S. Archambault, A. Archer +103

Outbursts from gamma-ray quasars provide insights on the relativistic jets of active galactic nuclei and constraints on the diffuse radiation fields that fill the Universe. The det…

hep-ph2015

Compact Tetraquark Interpretation of the XYZ States

Angelo Esposito

The past decade witnessed the observation of several exotic charmonium-like resonances, some of which are manifestly non-qqbar mesons. We review one of the most popular interpretat…

cond-mat.str-el2015★ 41 cited

Photoinduced phase transitions in narrow-gap Mott insulators: the case of VO

Zhuoran He, Andrew J. Millis

We study the nonequilibrium dynamics of photoexcited electrons in the narrow-gap Mott insulator VO. The initial stages of relaxation are treated using a quantum Boltzmann equat…

hep-ph2015★ 10 cited

The Diboson Excess: Experimental Situation and Classification of Explanations; A Les Houches Pre-Proceeding

Johann Brehmer, Gustaaf Brooijmans, Giacomo Cacciapaglia +21

We examine the `diboson' excess at TeV seen by the LHC experiments in various channels. We provide a comparison of the excess significances as a function of the mass of th…

physics.geo-ph2015★ 29 cited

Observations of cyclone-induced storm surge in coastal Bangladesh

Soyee Chiu, Christopher Small

Water level measurements from 15 tide gauges in the coastal zone of Bangladesh are analyzed in conjunction with cyclone tracks and wind speed data for 54 cyclones between 1977 and…

cs.CV2015★ 3 cited

Articulated Pose Estimation Using Hierarchical Exemplar-Based Models

Jiongxin Liu, Yinxiao Li, Peter Allen +1

Exemplar-based models have achieved great success on localizing the parts of semi-rigid objects. However, their efficacy on highly articulated objects such as humans is yet to be e…

hep-th2015★ 13 cited

Grassmann Matrix Quantum Mechanics

Dionysios Anninos, Frederik Denef, Ruben Monten

We explore quantum mechanical theories whose fundamental degrees of freedom are rectangular matrices with Grassmann valued matrix elements. We study particular models where the low…

stat.ML2015★ 1 cited

Boosted Sparse Non-linear Distance Metric Learning

Yuting Ma, Tian Zheng

This paper proposes a boosting-based solution addressing metric learning problems for high-dimensional data. Distance measures have been used as natural measures of (dis)similarity…

astro-ph.HE2015★ 143 cited

Multiwavelength Study of Quiescent States of Mrk 421 with Unprecedented Hard X-Ray Coverage Provided by NuSTAR in 2013

M. Baloković, D. Paneque, G. Madejski +305

We present coordinated multiwavelength observations of the bright, nearby BL Lac object Mrk 421 taken in 2013 January-March, involving GASP-WEBT, Swift, NuSTAR, Fermi-LAT, MAGIC, V…