Kelvin Modes of a fast rotating Bose-Einstein Condensate

Details Kelvin Modes of a fast rotating Bose-Einstein Condensate Kelvin Modes of a fast rotating Bose-Einstein Condensate

2003-05-23

arxiv.org/abs/cond-mat/0305559v1

Physics

Condensed Matter

Statistical Mechanics

7 pages, 3 figures, submitted to Phys. Rev. A

Scientific paper

10.1103/PhysRevA.68.053601

Using the concept of diffused vorticity and the formalism of rotational hydrodynamics we calculate the eigenmodes of a harmonically trapped Bose-Einstein condensate containing an array of quantized vortices. We predict the occurrence of a new branch of anomalous excitations, analogous to the Kelvin modes of the single vortex dynamics. Special attention is devoted to the excitation of the anomalous scissors mode.

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