Dynamics of a single ring of vortices in two-dimensional trapped Bose-Einstein condensates
Other Condensed Matter
2009-11-10 v1
Abstract
The dynamics of a ring of vortices in two-dimensional Bose-Einstein condensates (with and without an additional vortex at the center) is studied for (1) a uniform condensate in a rigid cylinder and (2) a nonuniform trapped condensate in the Thomas-Fermi limit. The sequence of ground states (within these single-ring configurations) is determined as a function of the external rotation frequency by comparing the free energy of the various states. For each ground state, the Tkachenko-like excitations and the associated dynamical stability are analyzed.
Cite
@article{arxiv.cond-mat/0407048,
title = {Dynamics of a single ring of vortices in two-dimensional trapped Bose-Einstein condensates},
author = {Jong-kwan Kim and Alexander L. Fetter},
journal= {arXiv preprint arXiv:cond-mat/0407048},
year = {2009}
}
Comments
6 figures, submitted to PRA