Generalized effective-potential Landau theory for a tunable state-dependent hexagonal optical lattice
Quantum Gases
2023-01-04 v1
Abstract
We analytically study the ground-state phase diagrams of ultracold bosons with various values of the effective magnetic quantum number in a state-dependent hexagonal optical lattice by using the generalized effective-potential Landau theory, where the site-offset energy between the two triangular sublattice A and B is tunable. Our analytical calculations of third-order corrections are in reasonably good agreement with the previous cluster Gutzwiller calculations. Furthermore, we reveal the reason why the regions of the Mott lobes in phase diagrams for are unexpectedly expanded with increasing in deep lattice.
Cite
@article{arxiv.2207.00946,
title = {Generalized effective-potential Landau theory for a tunable state-dependent hexagonal optical lattice},
author = {Sheng Yue and Dan-Yang Chen and Chenrong Liu and Ming Yang and Zhi Lin},
journal= {arXiv preprint arXiv:2207.00946},
year = {2023}
}