Vortex nucleation and hysteresis phenomena in rotating Bose-Einstein condensates
Condensed Matter
2007-05-23 v1
Abstract
We study the generation of vortices in rotating Bose--Einstein condensates, a situation which has been realized in a recent experiment (K. W. Madison, F. Chevy, W. Wohlleben, J. Dalibard, Phys. Rev. Lett. {\bf 84} 806 (2000)). By combining a linear stability analysis with the global optimization of the nonlinear free energy functional, we study the regimes that can be reached in current experiments. We find a hysteresis phenomenon in the vortex nucleation due to the metastabilization of the vortexless condensate. We also prove that for a fast enough rotating trap the ground state of the condensate hosts one or more bent vortex lines.
Cite
@article{arxiv.cond-mat/0012071,
title = {Vortex nucleation and hysteresis phenomena in rotating Bose-Einstein condensates},
author = {Juan J. Garcia-Ripoll and Victor M. Perez-Garcia},
journal= {arXiv preprint arXiv:cond-mat/0012071},
year = {2007}
}
Comments
3 figures, 4 pages