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arXiv · 0911.5536

Quantum Phases of Bose-Hubbard Model in Optical Superlattices

Bo-Lun Chen·Su-Peng Kou·Yunbo Zhang·Shu Chen
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Abstract

In this paper, we analyze the quantum phases of multiple component Bose-Hubbard model in optical superlattices, using a mean-field method, the decoupling approximation. We find that the phase diagrams exhibit complected patterns and regions with various Charge Density Wave (CDW) for both one- and two- component cases. We also analyze the effective spin dynamics for the two-component case in strong-coupling region at unit filling, and show the possible existence of a Spin Density Wave (SDW) order.

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Bo-Lun Chen, Su-Peng Kou, Yunbo Zhang, Shu Chen. 2009-11-30. Quantum Phases of Bose-Hubbard Model in Optical Superlattices. https://doi.org/10.1103/physreva.81.053608

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