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arXiv · 1807.11045

Thermalization and localization of an oscillating Bose-Einstein condensate in a disordered trap

Che-Hsiu Hsueh·Russell Ong·Jing-Fu Tseng·Makoto Tsubota·Wen-Chin Wu
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Abstract

We numerically simulate an oscillating Bose-Einstein condensate in a disordered trap [Phys. Rev. A 82, 033603 (2010)] and the results are in good agreement with the experiment. It allows us to verify that total energy and particle number are conserved in this quantum system. The disorder acts as a medium, which results in a relaxation from nonequilibrium to equilibrium, i.e., thermalization. An algebraic localization is realized when the system approaches the equilibrium, and if the system falls into the regime when the healing length of the condensate exceeds the correlation length of the disorder, exponential Anderson localization is to be observed.

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Che-Hsiu Hsueh, Russell Ong, Jing-Fu Tseng, Makoto Tsubota, Wen-Chin Wu. 2018-07-29. Thermalization and localization of an oscillating Bose-Einstein condensate in a disordered trap. https://doi.org/10.1103/physreva.98.063613

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