Kelvin-Tkachenko waves of few-vortex arrays in trapped Bose-Einstein condensates

Details Kelvin-Tkachenko waves of few-vortex arrays in trapped Bose-Einstein condensates Kelvin-Tkachenko waves of few-vortex arrays in trapped Bose-Einstein condensates

2010-07-21

arxiv.org/abs/1007.3548v2

Phys. Rev. A 82, 063627 (2010)

Physics

Condensed Matter

Quantum Gases

4 pages, 3 figures, 16 movies http://pra.aps.org/supplemental/PRA/v82/i6/e063627

Scientific paper

We have calculated the low-lying elementary excitations of three-dimensional few-vortex arrays in trapped Bose-Einstein condensates. The number of different Kelvin-Tkachenko vortex wave branches matches the number of vortices in the condensate. The lowest odd-parity modes exhibit superfluid gyroscopic vortex motion. Experimentally, these modes could be excited and observed individually or in connection with the formation and decay of quantum turbulence.

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