Axisymmetric versus Non-axisymmetric Vortices in Spinor Bose-Einstein Condensates
Abstract
The structure and stability of various vortices in F=1 spinor Bose-Einstein condensates are investigated by solving the extended Gross-Pitaevskii equation under rotation. We perform an extensive search for stable vortices, considering both axisymmetric and non-axisymmetric vortices and covering a wide range of ferromagnetic and antiferromagnetic interactions. The topological defect called Mermin-Ho (Anderson-Toulouse) vortex is shown to be stable for ferromagnetic case. The phase diagram is established in a plane of external rotation Omega vs total magnetization M by comparing the free energies of possible vortices. It is shown that there are qualitative differences between axisymmetric and non-axisymmetric vortices which are manifested in the Omega- and M-dependences.
Keywords
Cite
@article{arxiv.cond-mat/0208032,
title = {Axisymmetric versus Non-axisymmetric Vortices in Spinor Bose-Einstein Condensates},
author = {T. Mizushima and K. Machida and T. Kita},
journal= {arXiv preprint arXiv:cond-mat/0208032},
year = {2009}
}
Comments
9 pages, 9 figures