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Small polarons in dilute gas Bose-Einstein condensates

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 نشر من قبل Fernando M. Cucchietti
 تاريخ النشر 2006
  مجال البحث فيزياء
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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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