Emergence of BLOCH bands in a rotating Bose-Einstein condensate.
نویسندگان
چکیده
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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ورودعنوان ژورنال:
- Physical review letters
دوره 93 22 شماره
صفحات -
تاریخ انتشار 2004