Showing 2015Show all

275 papers · 1 filter

math.CO2015★ 9 cited

Subgraph statistics in subcritical graph classes

Michael Drmota, Lander Ramos, Juanjo Rué

Let be a fixed graph and a subcritical graph class. In this paper we show that the number of occurrences of (as a subgraph) in a uniformly at random graph of…

cond-mat.quant-gas2015★ 17 cited

Matter-wave recombiners for trapped Bose-Einstein condensates

Tarik Berrada, Sandrine van Frank, Robert Bücker +5

Interferometry with trapped atomic Bose-Einstein condensates (BECs) requires the development of techniques to recombine the two paths of the interferometer and map the accumulated…

physics.acc-ph2015★ 10 cited

In vacuum diamond sensor scanner for beam halo measurements in the beam line at the KEK Accelerator Test Facility

Shan Liu, Frederic Bogard, Patrick Cornebise +9

The investigation of beam halo transverse distributions is important for the understanding of beam losses and the control of backgrounds in Future Linear Colliders (FLC). A novel i…

physics.ins-det2015★ 12 cited

Charge Transfer Properties Through Graphene for Applications in Gaseous Detectors

S. Franchino, D. Gonzalez-Diaz, R. Hall-Wilton +13

Graphene is a single layer of carbon atoms arranged in a honeycomb lattice with remarkable mechanical and electrical properties. Regarded as the thinnest and narrowest conductive m…

physics.ins-det2015★ 11 cited

Effects of High Charge Densities in Multi-GEM Detectors

S. Franchino, D. Gonzalez Diaz, R. Hall-Wilton +9

A comprehensive study, supported by systematic measurements and numerical computations, of the intrinsic limits of multi-GEM detectors when exposed to very high particle fluxes or…

cond-mat.mtrl-sci2015★ 30 cited

The influence of non-idealities on the thermoelectric power factor of nanostructured superlattices

Mischa Thesberg, Mahdi Pourfath, Hans Kosina +1

Cross-plane superlattices composed of nanoscale layers of alternating potential wells and barriers have attracted great attention for their potential to provide thermoelectric powe…

cond-mat.str-el2015★ 3 cited

Unusual Behaviour of (Np,Pu)B2C

Tomasz Klimczuk, Pascal Boulet, Jean-Christophe Griveau +5

Two transuranium metal boron carbides, NpB2C and PuB2C have been synthesized by argon arc melting. The crystal structures of the {Np,Pu}B2C compounds were determined from single cr…

cond-mat.mtrl-sci2015★ 23 cited

Areal density optimizations for heat-assisted-magnetic recording of high density bit-patterned media

Christoph Vogler, Claas Abert, Florian Bruckner +2

Heat-assisted-magnetic recording (HAMR) is hoped to be the future recording technique for high density storage devices. Nevertheless, there exist several realizations strategies. W…

math.DG2015

Deforming a convex hypersurface with low entropy by its Gauss curvature

Mohammad N. Ivaki

We prove the asymptotic roundness under normalized Gauss curvature flow provided entropy is initially small enough.

math.LO2015★ 4 cited

Logics of Finite Hankel Rank

Nadia Labai, Johann A. Makowsky

We discuss the Feferman-Vaught Theorem in the setting of abstract model theory for finite structures. We look at sum-like and product-like binary operations on finite structures an…

cond-mat.str-el2015★ 48 cited

Dramatic pressure-driven enhancement of bulk skyrmion stability

I. Levatić, P. Popčević, V. Šurija +6

The recent discovery of magnetic skyrmion lattices initiated a surge of interest in the scientific community. Several novel phenomena have been shown to emerge from the interaction…

math.NA2015★ 4 cited

Galerkin Methods for Boltzmann-Poisson transport with reflection conditions on rough boundaries

Jose A. Morales Escalante, Irene M. Gamba

We consider in this paper the mathematical and numerical modelling of reflective boundary conditions (BC) associated to Boltzmann - Poisson systems, including diffusive reflection…

cs.AI2015★ 27 cited

Modeling Variations of First-Order Horn Abduction in Answer Set Programming

Peter Schüller

We study abduction in First Order Horn logic theories where all atoms can be abduced and we are looking for preferred solutions with respect to three objective functions: cardinali…

eess.SY2015★ 27 cited

Cooperative Localization for Mobile Networks: A Distributed Belief Propagation - Mean Field Message Passing Algorithm

Burak Çakmak, Daniel N. Urup, Florian Meyer +3

We propose a hybrid message passing method for distributed cooperative localization and tracking of mobile agents. Belief propagation and mean field message passing are employed fo…

physics.chem-ph2015★ 35 cited

Fragmentation of long-lived hydrocarbons after strong field ionization

Seyedreza Larimian, Sonia Erattupuzha, Erik Lötstedt +9

We experimentally and theoretically investigated the deprotonation process on nanosecond to microsecond timescale in ethylene and acetylene molecules, following their double ioniza…

hep-th2015★ 6 cited

Conformal gravity 1-loop partition function

M. Irakleidou, I. Lovrekovic

We evaluate the 1-loop partition function of conformal gravity in four dimensions around an background, using the heat kernel techniques. We give expressions for the releva…

math.PR2015

Peacocks nearby: approximating sequences of measures

Stefan Gerhold, I. Cetin Gülüm

A peacock is a family of probability measures with finite mean that increases in convex order. It is a classical result, in the discrete time case due to Strassen, that any peacock…

hep-th2015

Semi-Holography for Heavy Ion Collisions: Self-Consistency and First Numerical Tests

Ayan Mukhopadhyay, Florian Preis, Anton Rebhan +1

We present an extended version of a recently proposed semi-holographic model for heavy-ion collisions, which includes self-consistent couplings between the Yang-Mills fields of the…

quant-ph2015★ 208 cited

Atom-field dressed states in slow-light waveguide QED

Giuseppe Calajo, Francesco Ciccarello, Darrick Chang +1

We discuss the properties of atom-photon bound states in waveguide QED systems consisting of single or multiple atoms coupled strongly to a finite-bandwidth photonic channel. Such…

hep-th2015★ 34 cited

Rotating Higher Spin Partition Functions and Extended BMS Symmetries

Andrea Campoleoni, Hernan A. Gonzalez, Blagoje Oblak +1

We evaluate one-loop partition functions of higher-spin fields in thermal flat space with angular potentials; this computation is performed in arbitrary space-time dimension, and t…

cond-mat.soft2015★ 5 cited

Equilibrium structures of anisometric, quadrupolar particles confined to a monolayer

Thomas Heinemann, Moritz Antlanger, Martial Mazars +2

We investigate the structural properties of a two-dimensional system of ellipsoidal particles carrying a linear quadrupole moment in their center. These particles represent a simpl…

hep-th2015★ 6 cited

One loop partition function of six dimensional conformal gravity using heat kernel on AdS

I. Lovrekovic

We compute the heat kernel for the Laplacians of symmetric transverse traceless fields of arbitrary spin on the background in even number of dimensions using the group theore…

quant-ph2015★ 52 cited

Engineering Long-Lived Collective Dark States in Spin Ensembles

Stefan Putz, Andreas Angerer, Dmitry O. Krimer +5

Ensembles of electron spins in hybrid microwave systems are powerful and versatile components for future quantum technologies. Quantum memories with high storage capacities are one…

cs.IT2015

An Approach to Complex Bayesian-optimal Approximate Message Passing

Gabor Hannak, Martin Mayer, Gerald Matz +1

In this work we aim to solve the compressed sensing problem for the case of a complex unknown vector by utilizing the Bayesian-optimal structured signal approximate message passing…