Rotating states for trapped bosons in an optical lattice
2008 (English)In: Europhysics letters, ISSN 0295-5075, E-ISSN 1286-4854, Vol. 84, no 1, 10007- p.Article in journal (Refereed) Published
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.
IdentifiersURN: urn:nbn:se:umu:diva-11483DOI: 10.1209/0295-5075/84/10007OAI: oai:DiVA.org:umu-11483DiVA: diva2:151154