Rotational Dynamics of Vortices in Confined Bose-Einstein Condensates
Soft Condensed Matter
2009-10-31 v2
Abstract
We derive the frequency of precession and conditions for stability for a quantized vortex in a single-component and a two-component Bose-Einstein condensate. The frequency of precession is proportional to the gradient of the free energy with respect to displacement of the vortex core. In a two-component system, it is possible to achieve a local minimum in the free energy at the center of the trap. The presence of such a minimum implies the existence of a region of energetic stability where the vortex cannot escape and where one may be able to generate a persistent current.
Keywords
Cite
@article{arxiv.cond-mat/0007143,
title = {Rotational Dynamics of Vortices in Confined Bose-Einstein Condensates},
author = {S. A. McGee and M. J. Holland},
journal= {arXiv preprint arXiv:cond-mat/0007143},
year = {2009}
}
Comments
6 Pages, 6 Figures