Vortex Stability Near the Surface of a Bose-Einstein Condensate

Details Vortex Stability Near the Surface of a Bose-Einstein Condensate Vortex Stability Near the Surface of a Bose-Einstein Condensate

2003-10-26

arxiv.org/abs/cond-mat/0310610v1

Physics

Condensed Matter

Statistical Mechanics

10 pages, 5 figures. Accepted in Phys. Rev. A

Scientific paper

We investigate energetic stability of vortices near the surface of a Bose-Einstein condensate. From an energy functional of a rotating Bose-Einstein condensate, written in terms of variables local to the surface, and a suitable trial wavefunction we calculate the energy of a moving vortex. The energetic stability of the vortex is investigated in terms of the rotation frequency of the confining potential. The critical frequency at which the vortices enter the condensate is calculated and compared with the experiment where a reasonable agreement is obtained.

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