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arXiv · 1205.6949

Visibility of ultra-cold Bose system in triangular optical lattices

Zhi Lin·Jun Zhang·Ying Jiang
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Abstract

In this paper, by treating the hopping parameter in Bose-Hubbard model as a perturbation, with the help of the re-summed Green's function method and cumulants expansion, the momentum distribution function of the ultra-cold Bose system in triangular optical lattice is calculated analytically. By utilizing it, the time-of-flight absorption picture is plotted and the corresponding visibility is determined. The comparison between our analytical results and the experimental data from Ref.[4] exhibits a qualitative agreement.

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Zhi Lin, Jun Zhang, Ying Jiang. 2012-05-31. Visibility of ultra-cold Bose system in triangular optical lattices. https://doi.org/10.1103/physreva.86.033625

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