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Small polarons in dilute gas Bose-Einstein condensates

Fernando M. Cucchietti·Eddy Timmermans
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Abstract

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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Fernando M. Cucchietti, Eddy Timmermans. 2006-01-11. Small polarons in dilute gas Bose-Einstein condensates. https://doi.org/10.1103/physrevlett.96.210401

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