Bose-Einstein condensates in one-dimensional optical lattices
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Louis, Pearl J.
Ostrovskaya, Elena
Kivshar, Yuri
Savage, Craig
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We present a theory of the band-gap spectrum and nonlinear localization of a Bose-Einstein condensate in 1D optical lattices and superlattices. The theory extends beyond the usual single-band and tight-binding approximations.
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