Anomalous fluctuations of two-dimensional Bose-Einstein condensates
Soft Condensed Matter
2009-11-07 v2 Mesoscale and Nanoscale Physics
Statistical Mechanics
Abstract
We investigate the particle-number fluctuations due to the collective excitations created in a two-dimensional (2D) and a quasi-2D Bose-Einstein condensates (BECs) at low temperature. We find that the fluctuations display an anomalous behavior, i. e. for the 2D BEC they are proportional to , where is the total number of particles. For the quasi-2D BEC, the particle-number fluctuations are proportional not only to but also to the square root of the trapping frequency in the strongly-confined direction.
Cite
@article{arxiv.cond-mat/0210593,
title = {Anomalous fluctuations of two-dimensional Bose-Einstein condensates},
author = {Hongwei Xiong and Shujuan Liu and Guoxiang Huang},
journal= {arXiv preprint arXiv:cond-mat/0210593},
year = {2009}
}
Comments
RevTex format, no figures, hongweixiong@hotmail.com, to appear in Phys. Rev. A