Vortices in Bose-Einstein condensates confined in a multiply connected Laguerre-Gaussian optical trap

Details Vortices in Bose-Einstein condensates confined in a multiply connected Laguerre-Gaussian optical trap Vortices in Bose-Einstein condensates confined in a multiply connected Laguerre-Gaussian optical trap

2001-01-02

arxiv.org/abs/cond-mat/0101014v1

Phys. Rev. A 64, 023603 (2001)

Physics

Condensed Matter

Scientific paper

10.1103/PhysRevA.64.023603

The quantized vortex state is investigated in a Bose-Einstein condensate, confined in a multiply connected geometry formed by a Laguerre-Gaussian optical trap. Solving the Gross-Pitaevskii equation variationally, we show that the criterium for vortex stability is that the interatomic interaction strength must exceed a critical interaction strength. The time evolution of a freely expanding Laguerre-Gaussian condensate with a vortex is calculated, and used to derive the interference pattern of such a condensate overlapping with a parabolically trapped condensate.

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