Bose-Einstein Condensates in Rotating Lattices

Details Bose-Einstein Condensates in Rotating Lattices Bose-Einstein Condensates in Rotating Lattices

2005-08-24

arxiv.org/abs/cond-mat/0508584v2

Phys. Rev. Lett. 96, 060405 (2006)

Physics

Condensed Matter

Other Condensed Matter

4 pages, 5 figures, Accepted for publication in PRL v2: Replaced phase winding labels with symmetry eigenstate indices, replac

Scientific paper

10.1103/PhysRevLett.96.060405

Strongly interacting bosons in 2D in a 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.

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