Three-dimensional vortex dynamics in Bose-Einstein condensates

Details Three-dimensional vortex dynamics in Bose-Einstein condensates Three-dimensional vortex dynamics in Bose-Einstein condensates

2000-03-06

arxiv.org/abs/cond-mat/0003063v1

Physical Review A 62(1), 011602(R) (2000).

Physics

Condensed Matter

4 pages, 4 figures, REVTeX 3.1; Submitted to Physical Review A (6 March 2000)

Scientific paper

10.1103/PhysRevA.62.011602

We simulate in the mean-field limit the effects of rotationally stirring a three-dimensional trapped Bose-Einstein condensate with a Gaussian laser beam. A single vortex cycling regime is found for a range of trap geometries, and is well described as coherent cycling between the ground and the first excited vortex states. The critical angular speed of stirring for vortex formation is quantitatively predicted by a simple model. We report preliminary results for the collisions of vortex lines, in which sections may be exchanged.

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