Impurity Dynamics in a Bose Condensate
Abstract
Description
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.
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
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