Quantum Phases of Bose-Hubbard Model in Optical Superlattices
Quantum Gases
2013-05-29 v1 Strongly Correlated Electrons
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.
Keywords
Cite
@article{arxiv.0911.5536,
title = {Quantum Phases of Bose-Hubbard Model in Optical Superlattices},
author = {Bo-Lun Chen and Su-Peng Kou and Yunbo Zhang and Shu Chen},
journal= {arXiv preprint arXiv:0911.5536},
year = {2013}
}
Comments
10 pages, 7 figures