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Bloch Structures in a Rotating Bose-Einstein Condensate

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arxiv cond-mat/0401228 v2 pith:7JYYKOGX submitted 2004-01-14 cond-mat.soft

classification cond-mat.soft
keywords condensaterotatingblochbose-einsteinperiodicadiabaticallyanalogousband
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A rotating Bose-Einstein condensate is shown to exhibit a Bloch band structure without the need of periodic potential. Vortices enter the condensate by a mechanism similar to the Bragg reflection, if the frequency of a rotating drive or the strength of interaction is adiabatically changed. A localized state analogous to a gap soliton in a periodic system is predicted near the edge of the Brillouin zone.

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