Phase Diagram of the Hubbard Model: Beyond the Dynamical Mean Field
Strongly Correlated Electrons
2009-10-31 v1 Superconductivity
Abstract
The Dynamical Cluster Approximation (DCA) is used to study non-local corrections to the dynamical mean field phase diagram of the two-dimensional Hubbard model. Regions of antiferromagnetic, d-wave superconducting, pseudo-gapped non-Fermi liquid, and Fermi liquid behaviors are found, in rough agreement with the generic phase diagram of the cuprates. The non-local fluctuations beyond the mean field both suppress the antiferromagnetism and mediate the superconductivity.
Cite
@article{arxiv.cond-mat/0011282,
title = {Phase Diagram of the Hubbard Model: Beyond the Dynamical Mean Field},
author = {M. Jarrell and Th. Maier and M. H. Hettler and A. N. Tahvildarzadeh},
journal= {arXiv preprint arXiv:cond-mat/0011282},
year = {2009}
}
Comments
4 pages, 5 eps figures, submitted to PRL