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Phys. Rev. Lett. 96, 060405 (2006) [4 pages]

Bose-Einstein Condensates in Rotating Lattices

Rajiv Bhat and M. J. Holland
JILA, National Institute of Standards and Technology and Department of Physics, University of Colorado, Boulder, Colorado 80309, USA

L. D. Carr
Physics Department, Colorado School of Mines, Golden, Colorado 80401, USA
Received 24 August 2005; published 17 February 2006

Strongly interacting bosons in a two-dimensional rotating square lattice are investigated via a modified Bose-Hubbard Hamiltonian. Such a system corresponds to a rotating lattice potential imprinted on a trapped Bose-Einstein condensate. Second-order quantum phase transitions between states of different symmetries are observed at discrete rotation rates. For the square lattice we study, there are four possible ground-state symmetries.

©2006 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevLett.96.060405
DOI: 10.1103/PhysRevLett.96.060405
PACS: 03.75.Lm; 03.75.Hh
  • 03.75.Lm
    Josephson effect, tunneling, Bose-Einstein condensates in periodic potentials, solitons, vortices, and topological excitations
  • 03.75.Hh
    Static properties of Bose-Einstein condensates; thermodynamical, statistical, and structural properties
  • YEAR: 2006
KEYWORDS: Bose-Einstein condensation, Hubbard model

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