Controlled vortex-sound interactions in atomic Bose-Einstein condensates.

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    Author
    Parker, NG; Proukakis, NP; Barenghi, CF; Adams, CS
    Date
    2004-04-23
    Source Title
    Physical Review Letters
    Publisher
    American Physical Society (APS)
    University of Melbourne Author/s
    Parker, Nicholas
    Affiliation
    Physics
    Metadata
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    Document Type
    Journal Article
    Citations
    Parker, N. G., Proukakis, N. P., Barenghi, C. F. & Adams, C. S. (2004). Controlled vortex-sound interactions in atomic Bose-Einstein condensates.. Phys Rev Lett, 92 (16), pp.160403-. https://doi.org/10.1103/PhysRevLett.92.160403.
    Access Status
    This item is currently not available from this repository
    URI
    http://hdl.handle.net/11343/26301
    DOI
    10.1103/PhysRevLett.92.160403
    Description

    C1 - Journal Articles Refereed
    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.
    Keywords
    Condensed Matter Physics - Structural Properties ; Physical Sciences

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