Order via Nonlinearity in Randomly Confined Bose Gases
Abstract
A Hartree-Fock mean-field theory of a weakly interacting Bose-gas in a quenched white noise disorder potential is presented. A direct continuous transition from the normal gas to a localized Bose-glass phase is found which has localized short-lived excitations with a gapless density of states and vanishing superfluid density. The critical temperature of this transition is as for an ideal gas undergoing Bose-Einstein condensation. Increasing the particle-number density a first-order transition from the localized state to a superfluid phase perturbed by disorder is found. At intermediate number densities both phases can coexist.
Cite
@article{arxiv.cond-mat/0508306,
title = {Order via Nonlinearity in Randomly Confined Bose Gases},
author = {Robert Graham and Axel Pelster},
journal= {arXiv preprint arXiv:cond-mat/0508306},
year = {2009}
}
Comments
Author Information under http://www.theo-phys.uni-essen.de/tp/ags/pelster_dir/. International Journal of Bifurcation and Chaos (in press)