Bosons in Disordered Optical Potentials
摘要
In this work we systematically investigate the condensate properties, superfluid properties and quantum phase transitions in interacting Bose gases trapped in disordered optical potentials. We numerically solve the Bose-Hubbard Hamiltonian exactly for different: (a) types of disorder, (b) disorder strengths, and (c) interatomic interactions. The three types of disorder studied are: quasiperiodic disorder, uniform random disorder and random speckle-type disorder. We find that the Bose glass, as identified by Fisher et al [Phys. Rev. B {\bf 40}, 546 (1989)], contains a normal condensate component and we show how the three different factors listed above affect it.
引用
@article{arxiv.cond-mat/0609195,
title = {Bosons in Disordered Optical Potentials},
author = {Pearl J. Y. Louis and Makoto Tsubota},
journal= {arXiv preprint arXiv:cond-mat/0609195},
year = {2009}
}
备注
4 pages, 4 figures (low res) v2 Title,Abstract,Introduction: changes; Figure 3: Add label to axis