Unusual states of vortex matter in mixtures of Bose-Einstein condensates on rotating optical lattices

In a single-component superfluid under rotation a broken symmetry in the order parameter space results in a broken translational symmetry in real space: a vortex lattice. If translational symmetry is restored, the phase of the order parameter disorders and thus the broken symmetry in the order param...

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Bibliographic Details
Published in:Physical review letters 2008-12, Vol.101 (25), p.255301-255301, Article 255301
Main Authors: Dahl, E K, Babaev, E, Sudbø, A
Format: Article
Language:English
Subjects:
BOSE-EINSTEIN CONDENSATION
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
MATTER
MIXTURES
ORDER PARAMETERS
superconductors
SUPERFLUIDITY
SYMMETRY
SYMMETRY BREAKING
transitions
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Summary:In a single-component superfluid under rotation a broken symmetry in the order parameter space results in a broken translational symmetry in real space: a vortex lattice. If translational symmetry is restored, the phase of the order parameter disorders and thus the broken symmetry in the order parameter space is also restored. We show that for Bose-Einstein condensate mixtures in optical lattices with negative dissipationless drag, a new situation arises. This state is a modulated vortex liquid which breaks translational symmetry in the direction transverse to the rotation vector.
ISSN:0031-9007
1079-7114
1079-7114
DOI:10.1103/PhysRevLett.101.255301