Structural instability of vortices in Bose-Einstein condensates
Soft Condensed Matter
2007-05-23 v1 Pattern Formation and Solitons
Abstract
In this paper we study a gaseous Bose-Einstein condensate (BEC) and show that: (i) A minimum value of the interaction is needed for the existence of stable persistent currents. (ii) Vorticity is not a fundamental invariant of the system, as there exists a conservative mechanism which can destroy a vortex and change its sign. (iii) This mechanism is suppressed by strong interactions.
Cite
@article{arxiv.cond-mat/0106210,
title = {Structural instability of vortices in Bose-Einstein condensates},
author = {Juan J. Garcia-Ripoll and Gabriel Molina-Terriza and Victor M. Perez-Garcia and Lluis Torner},
journal= {arXiv preprint arXiv:cond-mat/0106210},
year = {2007}
}
Comments
4 pages with 3 figures. Submitted to Phys. Rev. Lett