1999/01/05 by Siu A. Chin, Chin, Siu A., Harald Forbert +1
Physics and Astronomy · #FOS: Physical sciences #Statistical Mechanics (cond-mat.stat-mech) #cond-mat.stat-mech
paper · pdf · doi:10.48550/arxiv.cond-mat/9901028
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
arxiv created 1999/01/05 · arxiv updated 2009/11/30
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.