Motional dressed states in a Bose condensate: Superfluidity at supersonic speed
arXiv:cond-mat/0004085 · doi:10.1103/PhysRevLett.85.1598
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.
4 pages, 2 figures