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Article
Preemptive vortex-loop proliferation in multicomponent interacting Bose-Einstein condensates
Physics Review B
  • E. K. Dahl
  • E. Babaev, University of Massachusetts - Amherst
  • S. Kragset
  • A. Sudbo
Publication Date
2008
Abstract
We use analytical arguments and large-scale Monte Carlo calculations to investigate the nature of the phase transitions between distinct complex superfluid phases in a two-component Bose-Einstein condensate when a nondissipative drag between the two components is being varied. We focus on understanding the role of topological defects in various phase transitions and develop vortex-matter arguments, allowing an analytical description of the phase diagram. We find the behavior of fluctuation induced vortex matter to be much more complex and substantially different from that of single-component superfluids. We propose and numerically investigate a drag-induced “preemptive vortex loop proliferation” scenario. Such a transition may be a quite generic feature in many multicomponent systems where symmetry is restored by a gas of several kinds of competing vortex loops.
Comments
This is the pre-published version harvested from arXiv. The published version is located at http://prb.aps.org/abstract/PRB/v77/i14/e144519
Citation Information
E. K. Dahl, E. Babaev, S. Kragset and A. Sudbo. "Preemptive vortex-loop proliferation in multicomponent interacting Bose-Einstein condensates" Physics Review B Vol. 77 Iss. 14 (2008)
Available at: http://works.bepress.com/egor_babaev/9/