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Controlled vortex-sound interactions in atomic Bose-Einstein condensates

Lookup NU author(s): Professor Nikolaos ProukakisORCiD, Professor Carlo Barenghi

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Abstract

The dynamics of vortex in a trapped quasi-two-dimensional Bose-Einstein condensate (BEC), which produce vortex-sound interaction was discussed. It was observed that a vortex precession in a trapped quasi-2D BEC at low temperature emits dipolar radiation, which becomes modified into a spiral wave pattern due to the motion of the vortex. The results show that the vortex energy decays at a rate proportional to its acceleration squared and inversely proportional to the precession frequency. It was suggested that sound emission and reabsorption can be controlled by varying the depth of the dimple.

Publication metadata

Author(s): Parker NG, Proukakis NP, Barenghi CF, Adams CS

Publication type: Article

Publication status: Published

Journal: Physical Review Letters

Year: 2004

Volume: 92

Issue: 16

Pages: 160403-1

ISSN (print): 0031-9007

ISSN (electronic): 1079-7114

Publisher: American Physical Society

URL: http://dx.doi.org/10.1103/PhysRevLett.92.160403

DOI: 10.1103/PhysRevLett.92.160403

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