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Controlled vortex-sound interactions in atomic Bose-Einstein condensate

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

Authors

N.G. Parker

N.P. Proukakis

C.F. Barenghi



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 Mar 28, 2024
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.

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