Finite temperature oscillations of a Bose-Einstein condensate in a two-gas model
Condensed Matter
2009-10-31 v2
Abstract
The temperature dependence of the frequencies of a Bose-Einstein condensate obtained in experiment has not been fully understood theoretically. In this paper we present a simplified version of a two-gas model. A numerically-found ground state of the system is used for the small-oscillations analysis. In the case of spherical symmetry a full spectrum of frequencies is found for low orbital quantum numbers. Avoided crossings that appear in the spectrum might be the reason for experimentally observed frequency shifts.
Keywords
Cite
@article{arxiv.cond-mat/0011163,
title = {Finite temperature oscillations of a Bose-Einstein condensate in a two-gas model},
author = {R. Bach and M. Brewczyk and K. Rzazewski},
journal= {arXiv preprint arXiv:cond-mat/0011163},
year = {2009}
}
Comments
11 pages, 10 eps figures included in the manuscript, submitted to Journal of Physics B