The existence of a quantum phase transition in a Hubbard model on a square lattice

2014/04/11 by Valentin Voroshilov, Voroshilov, Valentin
Physics and Astronomy · #Advanced Chemical Physics Studies #FOS: Physical sciences #Quantum and electron transport phenomena #Quantum many-body systems #Strongly Correlated Electrons (cond-mat.str-el) #cond-mat.str-el

paper · pdf · doi:10.48550/arxiv.1404.3140

7 pages (with an added appendix)

openalex publication_date 2014/04/11 · arxiv created 2014/04/22 · arxiv updated 2014/04/23 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

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.

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