Interaction of Impurity Atoms in Bose-Einstein-Condensates

Details Interaction of Impurity Atoms in Bose-Einstein-Condensates Interaction of Impurity Atoms in Bose-Einstein-Condensates

2004-07-30

arxiv.org/abs/cond-mat/0407809v1

Physics

Condensed Matter

Other Condensed Matter

8 pages, 6 figures

Scientific paper

10.1103/PhysRevA.71.033605

The interaction of two spatially separated impurity atoms through phonon exchange in a Bose-Einstein condensate is studied within a Bogoliubov approach. The impurity atoms are held by deep and narrow trap potentials and experience level shifts which consist of a mean-field part and vacuum contributions from the Bogoliubov-phonons. In addition there is a conditional energy shift resulting from the exchange of phonons between the impurity atoms.

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