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Quantum Phases of Bose-Hubbard Model in Optical Superlattices

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 نشر من قبل Bo-Lun Chen
 تاريخ النشر 2009
  مجال البحث فيزياء
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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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