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Phys. Rev. A 66, 053606 (2002) [4 pages]

Giant hole and circular superflow in a fast rotating Bose-Einstein condensate

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Kenichi Kasamatsu1, Makoto Tsubota1, and Masahito Ueda2
1Department of Physics, Osaka City University, Sumiyoshi-Ku, Osaka 558-8585, Japan
2Department of Physics, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8551, Japan

Received 8 February 2002; revised 6 June 2002; published 11 November 2002

A fast rotating Bose-Einstein condensate confined in a quadratic-plus-quartic potential is found to dynamically generate a “giant vortex” that absorbs all phase singularities into a central low density hole, thereby sustaining a quasi-one-dimensional circular superflow at a supersonic speed.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.66.053606
DOI:
10.1103/PhysRevA.66.053606
PACS:
03.75.Fi, 67.40.Db
 
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