Quadrupole Oscillation of a Single-Vortex Condensate: Evidence for Kelvin Modes
Soft Condensed Matter
2009-11-07 v1 Superconductivity
Abstract
We study the two transverse quadrupole modes of a cigar-shaped Bose-Einstein condensate with a single centered vortex. We show that the counter-rotating mode is more strongly damped than in the absence of a vortex, whereas the co-rotating mode is not affected appreciably by the vortex. We interpret this result as a decay of the counter-rotating quadrupole mode into two excitations of the vortex line, the so-called Kelvin modes. This is supported by direct observation of the wiggling vortex line.
Cite
@article{arxiv.cond-mat/0211101,
title = {Quadrupole Oscillation of a Single-Vortex Condensate: Evidence for Kelvin Modes},
author = {V. Bretin and P. Rosenbusch and F. Chevy and G. V. Shlyapnikov and J. Dalibard},
journal= {arXiv preprint arXiv:cond-mat/0211101},
year = {2009}
}
Comments
4 pages, 3 figures