Small polarons in dilute gas Bose-Einstein condensates

Details Small polarons in dilute gas Bose-Einstein condensates Small polarons in dilute gas Bose-Einstein condensates

2006-01-11

arxiv.org/abs/cond-mat/0601228v1

Physics

Condensed Matter

Other Condensed Matter

Scientific paper

10.1103/PhysRevLett.96.210401

A neutral impurity atom immersed in a dilute Bose-Einstein condensate (BEC)
can have a bound ground state in which the impurity is self-localized. In this
small polaron-like state, the impurity distorts the density of the surrounding
BEC, thereby creating the self-trapping potential minimum. We describe the
self-localization in a strong coupling approach.

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