Controlled vortex-sound interactions in atomic Bose-Einstein condensate

Parker, N.G.; Proukakis, N.P.; Barenghi, C.F.; Adams, C.S.

Abstract

The low temperature dynamics of a vortex in a trapped quasi-two-dimensional Bose-Einstein condensate are studied quantitatively. Precession of an off-centered vortex in a dimple trap, embedded in a weaker harmonic trap, leads to the emission of sound in a dipolar radiation pattern. Sound emission and reabsorption can be controlled by varying the depth of the dimple. In a shallow dimple, the power emitted is proportional to the vortex acceleration-squared over the precession frequency, whereas for a deep dimple, periodic sound reabsorption stabilizes the vortex against radiation-induced decay.

Citation

Parker, N., Proukakis, N., Barenghi, C., & Adams, C. (2004). Controlled vortex-sound interactions in atomic Bose-Einstein condensate. Physical Review Letters, 92(16), https://doi.org/10.1103/physrevlett.92.160403

• Journal Article Type: Article
• Publication Date: 2004-04
• Deposit Date: Apr 28, 2008
• Publicly Available Date: Apr 28, 2008
• Journal: Physical Review Letters
• Print ISSN: 0031-9007
• Electronic ISSN: 1079-7114
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 92
• Issue: 16
• DOI: https://doi.org/10.1103/physrevlett.92.160403
• Keywords: Dark solitons, Vortices, Dynamics, Motion, Decay.
• Public URL: https://durham-repository.worktribe.com/output/1619507