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

C. K. Law·C. M. Chan·P. T. Leung·M. -C. Chu
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Abstract

We present an exact analytic solution of a nonlinear Schrödinger 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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C. K. Law, C. M. Chan, P. T. Leung, M. -C. Chu. 2000-04-06. Motional dressed states in a Bose condensate: Superfluidity at supersonic speed. https://doi.org/10.1103/physrevlett.85.1598

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