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Shape deformations and angular momentum transfer in trapped Bose-Einstein condensates

F. Dalfovo·S. Stringari
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Abstract

Angular momentum can be transferred to a trapped Bose-Einstein condensate by distorting its shape with an external rotating field, provided the rotational frequency is larger than a critical frequency fixed by the energy and angular momentum of the excited states of the system. By using the Gross-Pitaevskii equation and sum rules, we explore the dependence of such a critical frequency on the multipolarity of the excitations and the asymmetry of the confining potential. We also discuss its possible relevance for vortex nucleation in rotating traps.

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F. Dalfovo, S. Stringari. 2000-09-13. Shape deformations and angular momentum transfer in trapped Bose-Einstein condensates. https://doi.org/10.1103/physreva.63.011601

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