Document Type
Article
Publication Date
1-31-2002
Publication Title
Physical Review Letters
DOI
10.1103/PhysRevLett.88.070405
ISSN
0031-9007
Abstract
We propose an easily detectable signature of superfluidity in rotating, vortex-free gaseous Bose-Einstein condensates. We have studied the time evolution of the expansion of such a condensate after it is released from the confining trap. We find that if such a condensate is not initially rotating, then at some moment it will instantaneously achieve a circular cross section. If the condensate is initially rotating its irrotational flow and the conservation of angular momentum prevent the released condensate from attaining a circular cross section, since the instantaneous moment of inertia is then proportional to the asymmetry of this cross section.
Recommended Citation
Edwards, Mark, Charles W. Clark, P. Pedri, L. Pitaevskii, S. Stringari.
2002.
"Consequence of Superfluidity on the Expansion of a Rotating Bose-Einstein Condensate."
Physical Review Letters, 88 (7): 070405-1-070405-4: American Physical Society.
doi: 10.1103/PhysRevLett.88.070405 source: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.88.070405
https://digitalcommons.georgiasouthern.edu/physics-facpubs/223
Comments
Authors have the right to use all or part of the Article, including the APS-prepared version without revision or modification, on the author(s)’ web home page or employer’s website. (source: http://journals.aps.org/authors/transfer-of-copyright-agreement) Article obtained from Physical Review Letters.