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Thermal fluctuations of vortex matter in trapped Bose-Einstein condensates
2006 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 97, no 17Article in journal (Refereed) Published
Abstract [en]

We perform Monte Carlo studies of vortices in three dimensions in a cylindrical confinement, with uniform and nonuniform density. The former is relevant to rotating He-4; the latter is relevant to a rotating trapped Bose-Einstein condensate. In the former case, we find dominant angular thermal vortex fluctuations close to the cylinder wall. For the latter case, a novel effect is that at low temperatures the vortex solid close to the center of the trap crosses directly over to a tensionless vortex tangle near the edge of the trap. At higher temperatures an intermediate tensionful vortex liquid located between the vortex solid and the vortex tangle may exist.

Place, publisher, year, edition, pages
2006. Vol. 97, no 17
Keyword [en]
ii superconductors, transition, superfluid
URN: urn:nbn:se:kth:diva-16093DOI: 10.1103/PhysRevLett.97.170403ISI: 000241586800004OAI: diva2:334135
QC 20100525Available from: 2010-08-05 Created: 2010-08-05Bibliographically approved

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Babaev, Egor
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