Abstract
An additional, quantum, particle interacting with a Bose condensate forms self-trapped "polaron" if the interaction is sufficiently strong. This is contrasted with the case where the additional particle is identical with those in the condensate, where the "self-trapping" would be interpreted as a consequence of a Mott transition. There the transition to the self-trapped state, if it exists, is abrupt, unlike the impurity case. An external potential enhances self-trapping in the nonidentical ease.
Original language | English |
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Pages (from-to) | 301-307 |
Number of pages | 7 |
Journal | Physical Review B |
Volume | 46 |
Issue number | 1 |
DOIs | |
Publication status | Published - 1 Jul 1992 |