Phenomenological description of the vortex density in rotating BEC superfluids

Details Phenomenological description of the vortex density in rotating BEC superfluids Phenomenological description of the vortex density in rotating BEC superfluids

2007-12-11

arxiv.org/abs/0712.1745v1

Physics

Condensed Matter

Other Condensed Matter

11 pages, 3 figures

Scientific paper

We propose a phenomenological equation for the vortex line density in rotating Bose-Einstein condensates as a function of the angular speed. This equation provides a simple description of the gross features of the increase in vortex number from the appearance of the first vortex to the theoretical rigid-body result for high vortex density, and allows one to compare with analogous situations in superfluid helium, after the suitable changes in the relevant parameters are made.

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