Emergence of BLOCH bands in a rotating Bose-Einstein condensate |
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Authors: | Saito Hiroki Ueda Masahito |
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Institution: | Department of Physics, Tokyo Institute of Technology, Tokyo 152-8551, Japan. |
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Abstract: | 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. |
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