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Phys. Rev. A 58, 580–583 (1998)

Persistent currents in a toroidal trap

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Juha Javanainen
Department of Physics, University of Connecticut, Storrs, Connecticut 06269-3046

Sun Mok Paik and Sung Mi Yoo
Department of Physics, Kangwon National University, Chunchon, Kangwon-do 200-701, Korea

Received 14 August 1997; published in the issue dated July 1998

Using elementary microscopic methods, we theoretically study persistent flow of an alkali-metal vapor Bose-Einstein condensate around a tight toroidal trap. The angular velocity of a persistent current must be smaller than the angular frequency of the lowest condensate excitation. A supercurrent may be excited by rotating a perturbing potential that is strong enough to cut the toroidal condensate.

© 1998 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.58.580
DOI:
10.1103/PhysRevA.58.580
PACS:
03.75.Fi, 05.30.-d, 32.80.Pj
 
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