Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2003-05-23
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.
Chevy Frédéric
Stringari Sandro
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