Bose-Einstein condensates in one-dimensional optical lattices: bandgap structure and solitons

@article{Louis2003BoseEinsteinCI,
  title={Bose-Einstein condensates in one-dimensional optical lattices: bandgap structure and solitons},
  author={P. J. Louis and E. A. Ostrovskaya and Yu. S. Kivshar and Craig Savage},
  journal={Postconference Digest Quantum Electronics and Laser Science, 2003. QELS.},
  year={2003},
  pages={2 pp.-}
}
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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