Kelvin-Tkachenko waves of few-vortex arrays in trapped Bose-Einstein condensates
Abstract
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 found 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.
- Publication:
-
Physical Review A
- Pub Date:
- December 2010
- DOI:
- arXiv:
- arXiv:1007.3548
- Bibcode:
- 2010PhRvA..82f3627S
- Keywords:
-
- 67.85.De;
- 03.75.Lm;
- Dynamic properties of condensates;
- excitations and superfluid flow;
- Tunneling Josephson effect Bose-Einstein condensates in periodic potentials solitons vortices and topological excitations;
- Condensed Matter - Quantum Gases;
- Quantum Physics
- E-Print:
- 4 pages, 3 figures, 16 movies http://pra.aps.org/supplemental/PRA/v82/i6/e063627