Transport in open spin chains: A Monte Carlo wave-function approach
Quantum Physics
2009-11-13 v1
Abstract
We investigate energy transport in several two-level atom or spin-1/2 models by a direct coupling to heat baths of different temperatures. The analysis is carried out on the basis of a recently derived quantum master equation which describes the nonequilibrium properties of internally weakly coupled systems appropriately. For the computation of the stationary state of the dynamical equations, we employ a Monte Carlo wave-function approach. The analysis directly indicates normal diffusive or ballistic transport in finite models and hints toward an extrapolation of the transport behavior of infinite models.
Cite
@article{arxiv.0803.1128,
title = {Transport in open spin chains: A Monte Carlo wave-function approach},
author = {Mathias Michel and Ortwin Hess and Hannu Wichterich and Jochen Gemmer},
journal= {arXiv preprint arXiv:0803.1128},
year = {2009}
}
Comments
to be published in Physical Reviews B