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Ultracold Bose Gases in 1D Disorder: From Lifshits Glass to Bose-Einstein Condensate

Pierre Lugan·David Clément·Philippe Bouyer·Alain Aspect·Maciej Lewenstein·Laurent Sanchez-Palencia
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Abstract

We study an ultracold Bose gas in the presence of 1D disorder for repulsive inter-atomic interactions varying from zero to the Thomas-Fermi regime. We show that for weak interactions the Bose gas populates a finite number of localized single-particle Lifshits states, while for strong interactions a delocalized disordered Bose-Einstein condensate is formed. We discuss the schematic quantum-state diagram and derive the equations of state for various regimes.

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Pierre Lugan, David Clément, Philippe Bouyer, Alain Aspect, Maciej Lewenstein, Laurent Sanchez-Palencia. 2007-05-02. Ultracold Bose Gases in 1D Disorder: From Lifshits Glass to Bose-Einstein Condensate. https://doi.org/10.1103/physrevlett.98.170403

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