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

Tomoya Isoshima·Jukka Huhtamäki·Martti M. Salomaa
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Abstract

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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Tomoya Isoshima, Jukka Huhtamäki, Martti M. Salomaa. 2003-07-04. Instabilities of off-centered vortices in a Bose-Einstein condensate. https://doi.org/10.1103/physreva.68.033611

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