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arxiv: cond-mat/0004085 · v1 · submitted 2000-04-06 · ❄️ cond-mat.soft

Motional dressed states in a Bose condensate: Superfluidity at supersonic speed

classification ❄️ cond-mat.soft
keywords fieldobstaclespeedsupersonicanalyticaroundbosecondensate
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We present an exact analytic solution of a nonlinear Schr\"odinger field interacting with a moving potential (obstacle) at supersonic speed. We show that the field forms a stable shape-invariant structure localized around the obstacle --- a dressing effect that protects the field against excitations by the obstacle.

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