Mass imbalance in the ionic Hubbard model: a DRMG study
Strongly Correlated Electrons
2021-09-21 v1 Quantum Physics
Abstract
We investigated the ionic Hubbard model with mass imbalance in one dimension, using the density matrix renormalization group method. This model exhibits a band insulator phase and an antiferromagnetic one, both with a finite spin gap. We found that this quantum phase transition is continuous, unalike the previous mean-field theory result. The von Neumann block entropy is maximum at the critical points, a fact that we used to build the phase diagram.
Cite
@article{arxiv.2109.08716,
title = {Mass imbalance in the ionic Hubbard model: a DRMG study},
author = {D. C. Padilla-González and R. Franco and J. Silva-Valencia},
journal= {arXiv preprint arXiv:2109.08716},
year = {2021}
}
Comments
7 pages, 5 figures, Comments are welcome