Analytic calculation of high order corrections to quantum phase transitions of ultracold Bose gases in bipartite superlattices

Zhi Lin; Wanli Liu

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arXiv · 1804.08465

Analytic calculation of high order corrections to quantum phase transitions of ultracold Bose gases in bipartite superlattices

Zhi Lin·Wanli Liu

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Abstract

We clarify some technical issues in the present generalized effective-potential Landau theory (GEPLT) that makes the GEPLT more consistent and complete. Utilizing this clarified GEPLT, we analytically study the quantum phase transitions of ultracold Bose gases in bipartite superlattices at zero termparture. The corresponding quantum phase boundaries are analytically calculated up to the third-order hopping, which are in excellent agreement with the quantum Monte Carlo (QMC) simulations.

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Zhi Lin, Wanli Liu. 2018-04-23. Analytic calculation of high order corrections to quantum phase transitions of ultracold Bose gases in bipartite superlattices. https://arxiv.org/abs/1804.08465

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