Solution of one-dimensional Bose Hubbard model in large-$U$ limit
Strongly Correlated Electrons
2021-12-21 v1
Abstract
The one-dimensional Bose-Hubbard model in large- limit has been studied via reducing and mapping the Hamiltonian to a simpler one. The eigenstates and eigenvalues have been obtained exactly in the subspaces with fixed numbers of single- and double-occupancies but without multiple-occupancies, and the thermodynamic properties of the system have been calculated further. These eigenstates and eigenvalues also enable us to develop a new perturbation treatment of the model, with which the ground-state energy has been calculated exactly to first order in .
Cite
@article{arxiv.2104.08670,
title = {Solution of one-dimensional Bose Hubbard model in large-$U$ limit},
author = {Yong Zheng},
journal= {arXiv preprint arXiv:2104.08670},
year = {2021}
}