Vortices near the Mott phase of a trapped Bose-Einstein condensate

Details Vortices near the Mott phase of a trapped Bose-Einstein condensate Vortices near the Mott phase of a trapped Bose-Einstein condensate

2008-08-11

arxiv.org/abs/0808.1548v1

Physics

Condensed Matter

Other Condensed Matter

Material from arXiv:0807.3609 formatted for journal submission

Scientific paper

10.1103/PhysRevA.79.021602

We present a theoretical study of vortices within a harmonically trapped Bose-Einstein condensate in a rotating optical lattice. We find that proximity to the Mott insulating state dramatically effects the vortex structures. To illustrate we give examples in which the vortices: (i) all sit at a fixed distance from the center of the trap, forming a ring, or (ii) coalesce at the center of the trap, forming a giant vortex. We model time-of-flight expansion to demonstrate the experimental observability of our predictions.

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