Dilute resonating gases and the third virial coefficient
Condensed Matter
2011-07-19 v1 Nuclear Theory
Atomic Physics
Abstract
We study dilute gases with short range interactions and large two-body scattering lengths. At temperatures between the condensation temperature and the scale set by therange of the potential there is a high degree of universality. The first two terms in the expansion of thermodynamic functions in powers of the fugacity , which measures the diluteness of the system, are determined by the scattering length only. The term proportional to depends only on one new parameter describing the three-body physics. We compute the third term of the expansion and show that, for many values of this new parameter, the term may be the dominant one.
Cite
@article{arxiv.cond-mat/0206527,
title = {Dilute resonating gases and the third virial coefficient},
author = {Paulo F. Bedaque and Gautam Rupak},
journal= {arXiv preprint arXiv:cond-mat/0206527},
year = {2011}
}
Comments
11 pages, 4 figures included