Dynamical properties of a condensate in a moving random potential

We study the dynamics of an inhomogeneous Bose-Einstein condensate subject to a one-dimensional harmonic trap and a moving random potential of finite extent. Above the critical velocity, a part of a condensate glues to the moving random potential with a consequent displacement of the condensate cent...

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Autores principales: Alamir, A., Capuzzi, P., Vignolo, P.
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_19516355_v217_n1_p63_Alamir
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Sumario:We study the dynamics of an inhomogeneous Bose-Einstein condensate subject to a one-dimensional harmonic trap and a moving random potential of finite extent. Above the critical velocity, a part of a condensate glues to the moving random potential with a consequent displacement of the condensate center-of-mass along the harmonic trap. We show that the center-of-mass turning point provides a direct measure of the average drag force acting on the condensate. © 2013 EDP Sciences and Springer.