Multiply-connected Bose-Einstein condensed alkali gases: Current-carrying states and their decay

Details Multiply-connected Bose-Einstein condensed alkali gases: Current-carrying states and their decay Multiply-connected Bose-Einstein condensed alkali gases: Current-carrying states and their decay

1997-11-12

arxiv.org/abs/cond-mat/9711106v1

Physics

Condensed Matter

Statistical Mechanics

4 pages, including 1 figure (REVTEX)

Scientific paper

10.1103/PhysRevA.57.R1505

The ability to support metastable current-carrying states in multiply-connected settings is one of the prime signatures of superfluidity. Such states are investigated theoretically for the case of trapped Bose condensed alkali gases, particularly with regard to the rate at which they decay via thermal fluctuations. The lifetimes of metastable currents can be either longer or shorter than experimental time-scales. A scheme for the experimental detection of metastable states is sketched.

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