Internal state conversion in ultracold gases
统计力学
2009-11-07 v5
摘要
We consider an ultracold gas of (non-condensed) bosons or fermions with two internal states, and study the effect of a gradient of the transition frequency between these states. When a RF pulse is applied to the sample, exchange effects during collisions transfer the atoms into internal states which depend on the direction of their velocity. This results, after a short time, in a spatial separation between the two states. A kinetic equation is solved analytically and numerically; the results agree well with the recent observations of Lewandowski et al.
引用
@article{arxiv.cond-mat/0112228,
title = {Internal state conversion in ultracold gases},
author = {J. N. Fuchs and D. M. Gangardt and F. Laloe},
journal= {arXiv preprint arXiv:cond-mat/0112228},
year = {2009}
}
备注
Accepted version, to appear in PRL