Physics – Condensed Matter – Quantum Gases
Scientific paper
2011-11-14
Phys. Rev. A 84 (2011) 053634
Physics
Condensed Matter
Quantum Gases
Scientific paper
By numerical solution and variational approximation of the Gross-Pitaevskii equation, we studied the localization of a noninteracting and weakly-interacting Bose-Einstein condensate in a weakly perturbed optical lattice in one and three dimensions. The perturbation achieved through a weak delocalizing expulsive or a linear potential as well as a weak localizing harmonic potential removes the periodicity of the optical lattice and leads to localization. We also studied some dynamics of the localized state confirming its stability.
Adhikari Sadhan K.
Cheng Yongshan
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