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Rotating states for trapped bosons in an optical lattice
Umeå University, Faculty of Science and Technology, Department of Physics.
2008 (English)In: Europhysics letters, ISSN 0295-5075, E-ISSN 1286-4854, Vol. 84, no 1, 10007- p.Article in journal (Refereed) Published
Abstract [en]

Rotational 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.

Place, publisher, year, edition, pages
Les Ulis: European Physical Society , 2008. Vol. 84, no 1, 10007- p.
National Category
Physical Sciences
URN: urn:nbn:se:umu:diva-11483DOI: 10.1209/0295-5075/84/10007OAI: diva2:151154
Available from: 2009-01-09 Created: 2009-01-09 Last updated: 2012-09-22Bibliographically approved

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Lundh, Emil
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