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Slowing down of vortex rings in Bose-Einstein condensates

Lookup NU author(s): Professor Carlo Barenghi, Dr Anthony Youd

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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.

Publication metadata

Author(s): Helm JL, Barenghi CF, Youd AJ

Publication type: Article

Publication status: Published

Journal: Physical Review A

Year: 2011

Volume: 83

Issue: 4

Print publication date: 01/04/2011

Date deposited: 20/02/2012

ISSN (print): 1050-2947

ISSN (electronic): 1094-1622

Publisher: American Physical Society

URL: http://dx.doi.org/10.1103/PhysRevA.83.045601

DOI: 10.1103/PhysRevA.83.045601

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