Dynamics of a quantum phase transition and relaxation to a steady state
J Dziarmaga - Advances in Physics, 2010 - Taylor & Francis
We review recent theoretical work on two closely related issues: excitation of an isolated
quantum condensed matter system driven adiabatically across a continuous quantum phase …
quantum condensed matter system driven adiabatically across a continuous quantum phase …
Coherent and dissipative dynamics at quantum phase transitions
The many-body physics at quantum phase transitions shows a subtle interplay between
quantum and thermal fluctuations, emerging in the low-temperature limit. In this review, we …
quantum and thermal fluctuations, emerging in the low-temperature limit. In this review, we …
Quantum simulations with cold trapped ions
M Johanning, AF Varón… - Journal of Physics B …, 2009 - iopscience.iop.org
The control of internal and motional quantum degrees of freedom of laser-cooled trapped
ions has been subject to intense theoretical and experimental research for about three …
ions has been subject to intense theoretical and experimental research for about three …
Quantum quenches in an spin chain from a spatially inhomogeneous initial state
J Lancaster, A Mitra - Physical Review E—Statistical, Nonlinear, and Soft …, 2010 - APS
Results are presented for the nonequilibrium dynamics of a quantum XXZ-spin chain whose
spins are initially arranged in a domain wall profile via the application of a magnetic field in …
spins are initially arranged in a domain wall profile via the application of a magnetic field in …
Inhomogeneous quasi-adiabatic driving of quantum critical dynamics in weakly disordered spin chains
We introduce an inhomogeneous protocol to drive a weakly disordered quantum spin chain
quasi-adiabatically across a quantum phase transition and minimize the residual energy of …
quasi-adiabatically across a quantum phase transition and minimize the residual energy of …
Trap-size scaling in confined-particle systems at quantum transitions
M Campostrini, E Vicari - Physical Review A—Atomic, Molecular, and Optical …, 2010 - APS
We develop a trap-size scaling theory for trapped particle systems at quantum transitions. As
a theoretical laboratory, we consider a quantum XY chain in an external transverse field …
a theoretical laboratory, we consider a quantum XY chain in an external transverse field …
Signature of quantum criticality in the density profiles of cold atom systems
Q Zhou, TL Ho - Physical review letters, 2010 - APS
In recent years, there has been considerable experimental effort using cold atoms to study
strongly correlated many-body systems. One class of phenomena of particular interest is …
strongly correlated many-body systems. One class of phenomena of particular interest is …
Entanglement in spin chains with gradients
We study solvable spin chains where either fields or couplings vary linearly in space and
create a sandwich-like structure of the ground state. We find that the entropy of …
create a sandwich-like structure of the ground state. We find that the entropy of …
Critical quench dynamics in confined systems
M Collura, D Karevski - Physical review letters, 2010 - APS
We analyze the coherent quantum evolution of a many-particle system after slowly sweeping
a power-law confining potential. The amplitude of the confining potential is varied in time …
a power-law confining potential. The amplitude of the confining potential is varied in time …
Quantum phase transitions in transverse field spin models: from statistical physics to quantum information
We review quantum phase transitions of spin systems in transverse magnetic fields taking
the examples of the spin-1/2 Ising and XY models in a transverse field. Beginning with an …
the examples of the spin-1/2 Ising and XY models in a transverse field. Beginning with an …