Anomalous condensate fluctuations in strongly interacting superfluids
Statistical Mechanics
2009-10-31 v2
Abstract
We show that the condensate occupation of a superfluid Bose liquid quite generally exhibits anomalously large fluctuations at finite temperatures. In three dimensions, the variance scales like T^2 V^{4/3} at low T, generalizing the result obtained by Giorgini, Pitaevskii, and Stringari for a weakly interacting Bose gas. In two dimensions there is only a quasicondensate, and the fluctuations are of the same order as the mean value.
Cite
@article{arxiv.cond-mat/9906344,
title = {Anomalous condensate fluctuations in strongly interacting superfluids},
author = {F. Meier and W. Zwerger},
journal= {arXiv preprint arXiv:cond-mat/9906344},
year = {2009}
}
Comments
3 pages, Revtex, no figures. submitted to PRA