The existence of a quantum phase transition in a Hubbard model on a square lattice
Strongly Correlated Electrons
2014-04-23 v2
Abstract
A novel canonical transformation is offered as the mean for studying properties of a system of strongly correlated electrons. As an example of the utility of the transformation, it is used to demonstrate the existence of a quantum phase transition in a Hubbard model on a square lattice. An Appendix presents two cases with a negative result.
Keywords
Cite
@article{arxiv.1404.3140,
title = {The existence of a quantum phase transition in a Hubbard model on a square lattice},
author = {Valentin Voroshilov},
journal= {arXiv preprint arXiv:1404.3140},
year = {2014}
}
Comments
7 pages (with an added appendix)