Vortex lattice formation in a rotating Bose-Einstein condensate
凝聚态物理
2009-11-07 v2
摘要
We study the dynamics of vortex lattice formation of a rotating trapped Bose-Einstein condensate by numerically solving the two-dimensional Gross-Pitaevskii equation, and find that the condensate undergoes elliptic deformation, followed by unstable surface-mode excitations before forming a quantized vortex lattice. The origin of the peculiar surface-mode excitations is identified to be phase fluctuations at the low-density surface regime. The obtained dependence of a distortion parameter on time and that on the driving frequency agree with the recent experiments by Madison {\it et al.} [Phys. Rev. Lett. {\bf 86}, 4443 (2001)].
引用
@article{arxiv.cond-mat/0104523,
title = {Vortex lattice formation in a rotating Bose-Einstein condensate},
author = {Makoto Tsubota and Kenichi Kasamatsu and Masahito Ueda},
journal= {arXiv preprint arXiv:cond-mat/0104523},
year = {2009}
}
备注
4 pages, 4 figures