Phys. Rev. Lett. 93, 220402 (2004) [4 pages]Emergence of Bloch Bands in a Rotating Bose-Einstein CondensateReceived 13 January 2004; published 23 November 2004 A rotating Bose-Einstein condensate is shown to exhibit a Bloch band structure even in the absence of a periodic potential. Vortices enter the condensate via Bragg reflection if the frequency of a rotating drive is adiabatically increased or decreased, or if the interaction is adiabatically changed at a constant rotating drive. A localized state analogous to a gap soliton in a periodic system is predicted to occur near the edge of the Brillouin zone. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.93.220402
DOI:
10.1103/PhysRevLett.93.220402
PACS:
03.75.Lm, 03.75.Kk, 32.80.Pj, 67.40.Vs
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