Vortex nucleation in rotating Bose-Einstein condensates
arXiv:cond-mat/0410149 · doi:10.1140/epjd/e2005-00219-1
Abstract
We study the formation and stability of a single vortex state in a weakly-interacting Bose-Einstein condensate that is confined in a rotating harmonic potential. Our results are consistent with the fact that any single off-center vortex is unstable. Furthermore, a vortex state located at the center of the cloud first becomes locally stable as the rotational frequency increases. Finally our study implies the existence of hysteresis effects.
4 pages, 6 ps figures, RevTex