Exact Ground State of Strongly Correlated Electron Systems from Symmetry-Entangled Wave-Functions
Strongly Correlated Electrons
2015-10-20 v1
Abstract
The four-site Hubbard model is considered from the exact diagonalisation and variational method points of view. It is shown that the exact ground-state can be recovered by a symmetry projected Slater determinant, irrespective of the interaction strength. This is in contrast to the Gutzwiller wave-function, which is calculated as well.
Keywords
Cite
@article{arxiv.1406.2825,
title = {Exact Ground State of Strongly Correlated Electron Systems from Symmetry-Entangled Wave-Functions},
author = {A. Leprévost and O. Juillet and R. Frésard},
journal= {arXiv preprint arXiv:1406.2825},
year = {2015}
}
Comments
10 pages, 4 figures