Shape deformations and angular momentum transfer in trapped Bose-Einstein condensates
凝聚态物理
2009-10-31 v1
摘要
Angular momentum can be transferred to a trapped Bose-Einstein condensate by distorting its shape with an external rotating field, provided the rotational frequency is larger than a critical frequency fixed by the energy and angular momentum of the excited states of the system. By using the Gross-Pitaevskii equation and sum rules, we explore the dependence of such a critical frequency on the multipolarity of the excitations and the asymmetry of the confining potential. We also discuss its possible relevance for vortex nucleation in rotating traps.
引用
@article{arxiv.cond-mat/0009187,
title = {Shape deformations and angular momentum transfer in trapped Bose-Einstein condensates},
author = {F. Dalfovo and S. Stringari},
journal= {arXiv preprint arXiv:cond-mat/0009187},
year = {2009}
}
备注
4 pages revtex, 2 figures included