Bloch Waves and Bloch Bands of Bose-Einstein Condensates in Optical Lattices
Biao Wu, Roberto B. Diener, Qian Niu
Abstract
Bloch waves and Bloch band of Bose-Einstein Condensates in optical lattices are studied. We provide further evidence for the loop structure in the Bloch band, and compute the critical values of the mean-field interaction strength for the Landau instability and the dynamical instability.
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