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quant-ph2011★ 31 cited

Correlated metallic two particle bound states in quasiperiodic chains

Sergej Flach, Mikhail Ivanchenko, Ramaz Khomeriki

Single particle states in a chain with quasiperiodic potential show a metal-insulator transition upon the change of the potential strength. We consider two particles with local int…

cond-mat.str-el2011★ 368 cited

Spin Ice, Fractionalization and Topological Order

C. Castelnovo, R. Moessner, S. L. Sondhi

The spin ice compounds {\dys} and {\holm} are highly unusual magnets which epitomize a set of concepts of great interest in modern condensed matter physics: their low-energy physic…

cond-mat.quant-gas2011

Quantum stochastic description of collisions in a canonical Bose gas

Patrick Navez, Achilleas Lazarides

We derive a stochastic process that describes the kinetics of a one-dimensional Bose gas in a regime where three body collisions are important. In this situation the system becomes…

physics.atom-ph2011★ 10 cited

Creating Non-Maxwellian Velocity Distributions in Ultracold Plasmas

J. Castro, G. Bannasch, P. McQuillen +2

We present techniques to perturb, measure and model the ion velocity distribution in an ultracold neutral plasma produced by photoionization of strontium atoms. By optical pumping…

cond-mat.str-el2011★ 19 cited

Intrinsic and extrinsic nonstationary field-driven processes in the spin-ice compound Dy2Ti2O7

S. Erfanifam, S. Zherlitsyn, J. Wosnitza +4

Nonequilibrium processes are probed by ultrasound waves in the spin-ice material Dy2Ti2O7 at low temperatures. The sound velocity and the sound attenuation exhibit a number of anom…

cond-mat.stat-mech2011★ 179 cited

Entropic Splitter for Particle Separation

D. Reguera, A. Luque, P. S. Burada +3

We present a particle separation mechanism which induces motion of particles of different sizes in opposite directions. The mechanism is based on the combined action of a driving f…

cond-mat.stat-mech2011★ 59 cited

The thermodynamic cost of measurements

Léo Granger, Holger Kantz

The measurement of thermal fluctuations provides information about the microscopic state of a thermodynamic system and can be used in order to extract work from a single heat bath…

cond-mat.str-el2011★ 21 cited

Decorated Shastry-Sutherland lattice in the spin-1/2 magnet CdCu2(BO3)2

O. Janson, I. Rousochatzakis, A. A. Tsirlin +3

We report the microscopic magnetic model for the spin-1/2 Heisenberg system CdCu2(BO3)2, one of the few quantum magnets showing the 1/2-magnetization plateau. Recent neutron diffra…

cond-mat.quant-gas2011★ 45 cited

Entangling many-body bound states with propagative modes in Bose-Hubbard systems

Mario Collura, Helge Aufderheide, Guillaume Roux +1

The quantum evolution of a cloud of bosons initially localized on part of a one dimensional optical lattice and suddenly subjected to a linear ramp is studied, realizing a quantum…

math-ph2011★ 16 cited

Dependence of chaotic diffusion on the size and position of holes

Georgie Knight, Orestis Georgiou, Carl P. Dettmann +1

A particle driven by deterministic chaos and moving in a spatially extended environment can exhibit normal diffusion, with its mean square displacement growing proportional to the…

cond-mat.quant-gas2011★ 7 cited

Strongly interacting one-dimensional bosons in arbitrary-strength optical lattices: from Bose-Hubbard to sine-Gordon and beyond

Achilleas Lazarides, Masudul Haque

We analyze interacting one-dimensional bosons in the continuum, subject to a periodic sinusoidal potential of arbitrary depth. Variation of the lattice depth tunes the system from…

cond-mat.str-el2011★ 24 cited

A field trip through spin ice

G. Sala, C. Castelnovo, R. Moessner +5

Fractionalisation -- the breaking up of an apparently indivisible microscopic degree of freedom -- is one of the most counterintuitive phenomena in many-body physics. Here we study…

quant-ph2011★ 23 cited

Macroscopic Quantum Self-Trapping in Dynamical Tunnelling

Sebastian Wüster, Beata J. Dabrowska-Wüster, Matthew J. Davis

It is well-known that increasing the nonlinearity due to repulsive atomic interactions in a double-well Bose-Einstein condensate suppresses quantum tunnelling between the two sites…

cond-mat.str-el2011★ 109 cited

Three-sublattice order in the SU(3) Heisenberg model on the square and triangular lattice

Bela Bauer, Philippe Corboz, Andreas M. Läuchli +4

We present a numerical study of the SU(3) Heisenberg model of three-flavor fermions on the triangular and square lattice by means of the density-matrix renormalization group (DMRG)…

nlin.CD2011★ 10 cited

Quantifying intermittency in the open drivebelt billiard

Carl P. Dettmann, Orestis Georgiou

A "drivebelt" stadium billiard with boundary consisting of circular arcs of differing radius connected by their common tangents shares many properties with the conventional "straig…

physics.atm-clus2011★ 14 cited

Many-electron dynamics triggered by massively parallel ionization

Christian Gnodtke, Ulf Saalmann, Jan-Michael Rost

Massively parallel ionization of many atoms in a cluster or bio-molecule is identified as new phenomenon of light-matter interaction which becomes feasible through short and intens…

cond-mat.str-el2011★ 18 cited

Quantum criticality of the sub-ohmic spin-boson model

Stefan Kirchner, Kevin Ingersent, Qimiao Si

We revisit the critical behavior of the sub-ohmic spin-boson model. Analysis of both the leading and subleading terms in the temperature dependence of the inverse static local spin…

physics.comp-ph2011

An efficient parallel method for relaxing to the minimum action wavefunction

Zachary B. Walters

Efficient and accurate numerical propagation of the time dependent Schroedinger equation is a problem with applications across a wide range of physics. This paper develops an effic…

cond-mat.str-el2011★ 32 cited

Ab initio calculation of d-d excitations in quasi-one-dimensional Cu d9 correlated materials

Hsiao-Yu Huang, Nikolay A. Bogdanov, Liudmila Siurakshina +3

With wavefunction-based electronic-structure calculations we determine the Cu d-d excitation energies in quasi-one-dimensional spin-chain and ladder copper oxides. A complete set o…

quant-ph2011★ 42 cited

A classical master equation for excitonic transport under the influence of an environment

A. Eisfeld, J. S. Briggs

In a previous paper [Phys.Rev.E 83, 051911] we have shown that the results of a quantum-mechanical calculation of electronic energy transfer (EET) over aggregates of coupled monome…

physics.atom-ph2011★ 134 cited

Supersolid Vortex Crystals in Rydberg-dressed Bose-Einstein Condensates

N. Henkel, F. Cinti, P. Jain +2

We study rotating quasi-two-dimensional Bose-Einstein-condensates, in which atoms are dressed to a highly excited Rydberg state. This leads to weak effective interactions that indu…

cond-mat.supr-con2011★ 51 cited

Intrinsic optical dichroism in the chiral superconducting state of SrRuO

Karol I. Wysokinski, James F. Annet, Balazs L. Gyorffy

We present an analysis of the Hall conductivity in time reversal symmetry breaking states of exotic superconductors. We find that the dichroic signal is non-zero in…

cond-mat.mes-hall2011★ 59 cited

Universal out-of-equilibrium Transport in Kondo-correlated quantum dots: Renormalized dual Fermions on the Keldysh contour

Enrique Muñoz, C. J. Bolech, Stefan Kirchner

The nonlinear conductance of semiconductor heterostructures and single molecule devices exhibiting Kondo physics has recently attracted attention. We address the observed sample de…

cond-mat.str-el2011★ 41 cited

Relaxation in driven integer quantum Hall edge states

D. L. Kovrizhin, J. T. Chalker

A highly non-thermal electron distribution is generated when quantum Hall edge states originating from sources at different potentials meet at a quantum point contact. The relaxati…