E. Lundh 2008 EPL 84 10007 doi:10.1209/0295-5075/84/10007
E. Lundh
Show affiliationsRotational states for trapped bosons in an optical lattice are studied in the framework of the Hubbard model. Critical frequencies are calculated and the main parameter regimes are identified. Transitions are observed from edge superfluids to vortex lattices with Mott insulating cores, and subsequently to lattices of interstitial vortices. The former transition coincides with the Mott transition. Changes in symmetry of the vortex lattices are observed as a function of lattice depth. Predictions for experimental signatures are presented.
Issue 1 (October 2008)
Received 26 June 2008, accepted for publication 25 August 2008
Published 18 September 2008
E. Lundh 2008 EPL 84 10007
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