2006/01/11 by Fernando M. Cucchietti, Eddy Timmermans · 1 citation
Physics and Astronomy · #cond-mat.other #quant-ph
paper · pdf · doi:10.1103/physrevlett.96.210401
arxiv created 2006/01/11 · arxiv updated 2009/12/01
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.