Kelvin Modes of a fast rotating Bose-Einstein Condensate
arXiv:cond-mat/0305559 · doi:10.1103/PhysRevA.68.053601
Abstract
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.
7 pages, 3 figures, submitted to Phys. Rev. A
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