Impurity Dynamics in a Bose Condensate
Abstract
We estimate the changes in the condensate ground state energy induced by one or more "sizable" impurities. By "sizable", we mean an impurity whose size is within a few orders of magnitude of the trap size and not necessarily atomic in scale. A sizable impurity will "drill" a hole in the condensate wave function and alter the condensate energy. The question is whether this microscopic change can be detected macroscopically because of the Bose-Einstein condensation effect. We discuss the effect of impurity expulsion, condensate interactions, and the induced interaction between two impurities.
Cite
@article{arxiv.cond-mat/9901028,
title = {Impurity Dynamics in a Bose Condensate},
author = {Siu A. Chin and Harald Forbert},
journal= {arXiv preprint arXiv:cond-mat/9901028},
year = {2007}
}
Comments
8 pages, 7 figures, invited talk given at the XXII International Workshop on Condensed Matter Theories, June 1-7,1998, Vanderbilt University, to be published by Nova Science