Coherent disintegration and stability of vortices in trapped Bose condensate

Details Coherent disintegration and stability of vortices in trapped Bose condensate Coherent disintegration and stability of vortices in trapped Bose condensate

1998-07-28

arxiv.org/abs/cond-mat/9807362v3

Physics

Condensed Matter

Statistical Mechanics

REVTeX, 6 pages, 3 figures

Scientific paper

10.1103/PhysRevA.59.1533

We consider the intrinsic stability of the vortex states of a pure Bose-Einstein condensate confined in a harmonic potential under the effects of coherent atom-atom interaction. We find that stable vortices can be supported, and that vortex stability can be controlled by changing the inter-particle interaction strength. At unstable regimes, a vortex will spontaneously disintegrate into states with different angular momenta even without external perturbations, with the lifetime determined by its imaginary excitation frequencies.

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