Gutzwiller variational wave function for multi-orbital Hubbard models in finite dimensions
Strongly Correlated Electrons
2016-08-03 v1
Abstract
We develop a diagrammatic method for the evaluation of general multi-band Gutzwiller wave functions in finite dimensions. Our approach provides a systematic improvement of the widely used Gutzwiller approximation. As a first application we investigate itinerant ferromagnetism and correlation-induced deformations of the Fermi surface for a two-band Hubbard model on a square lattice.
Keywords
Cite
@article{arxiv.1510.07896,
title = {Gutzwiller variational wave function for multi-orbital Hubbard models in finite dimensions},
author = {Kevin zu Münster and Jörg Bünemann},
journal= {arXiv preprint arXiv:1510.07896},
year = {2016}
}