Abstract
We consider vortex rings moving in a Bose–Einstein condensate. By numerically solving the Gross–Pitaevskii equation, we show that if the circular shape of the ring is perturbed by helical Kelvin waves of given amplitude and azimuthal wave number, the translational self-induced velocity of the vortex ring is reduced; at large amplitude, the vortex ring halts.
1 More- Received 18 September 2010
DOI:https://doi.org/10.1103/PhysRevA.83.045601
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