Free expansion of attractive and repulsive Bose-Einstein condensed vortex states

Details Free expansion of attractive and repulsive Bose-Einstein condensed vortex states Free expansion of attractive and repulsive Bose-Einstein condensed vortex states

2001-09-11

arxiv.org/abs/cond-mat/0109199v1

Phys. Rev. A 65 (2002) 033616 (1-6)

Physics

Condensed Matter

Soft Condensed Matter

5 revtex pages, 7 postscript figures

Scientific paper

10.1103/PhysRevA.65.033616

Free expansion of attractive and repulsive Bose-Einstein condensed vortex states formed in an axially symmetric trap is investigated using the numerical solution of the time-dependent Gross-Pitaevskii equation. In a repulsive condensate the vortex-core radius is much smaller than the radial root-mean-square (rms) radius, which makes the experimental observation of the vortex core difficult. The opposite is found to be true in an attractive condensate which makes it a better candidate for experimental observation. Also, in all cases the ratio of vortex-core radius to radial rms radius increases as the angular momentum of the vortex increases. This makes the vortex states with higher angular momenta more suitable for experimental confirmation.

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