Instabilities of off-centered vortices in a Bose-Einstein condensate

Details Instabilities of off-centered vortices in a Bose-Einstein condensate Instabilities of off-centered vortices in a Bose-Einstein condensate

2002-12-20

arxiv.org/abs/cond-mat/0212528v3

Physics

Condensed Matter

Soft Condensed Matter

8 pages, 9 figures. Introduction and Conclusion are fully revised. Definitions of angular momenta and usage of the time-depend

Scientific paper

10.1103/PhysRevA.68.033611

We study numerically the excitations of off-centered vortices in a Bose-Einstein condensate. The displacement of a single vortex and the separation of a doubly quantized vortex are considered. We find that the core-localized excitations of the precessing vortices continue to feature the property which implies that the vortices are unstable. The core-localized, dipolar, and quadrupolar excitations are found to deform continuously as functions of vortex displacements and intervortex separation.

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