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arXiv · 0710.1090

Vortex lattices of bosons in deep rotating optical lattices

Daniel S. Goldbaum·Erich J. Mueller
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Abstract

We study vortex-lattice phases for a Bose gas trapped in a rotating optical-lattice near the superfluid--Mott-insulator transition. We find a series of abrupt structural phase transitions where vortices are pinned with their cores only on plaquettes or only on sites. We discuss connections between these vortex structures and the Hofstadter-butterfly spectrum of free particles on a rotating lattice.

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Daniel S. Goldbaum, Erich J. Mueller. 2008-07-23. Vortex lattices of bosons in deep rotating optical lattices. https://doi.org/10.1103/physreva.77.033629

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