Slowing down of vortex rings in Bose-Einstein condensates

Slowing down of vortex rings in Bose-Einstein condensates

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...

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Veröffentlicht in:Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2011-04, Vol.83 (4), Article 045601
Hauptverfasser: Helm, John L., Barenghi, Carlo F., Youd, Anthony J.
Format: Artikel
Sprache:eng
Schlagworte:
AMPLITUDES
ATOMIC AND MOLECULAR PHYSICS
BOSE-EINSTEIN CONDENSATION
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
EQUATIONS
RINGS
SLOWING-DOWN
VORTICES
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Beschreibung
Zusammenfassung: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.
ISSN:1050-2947
1094-1622
DOI:10.1103/PhysRevA.83.045601