Off-diagonal Wave Function Monte Carlo Studies of Hubbard Model I
Strongly Correlated Electrons
2015-06-24 v1
Abstract
We propose a Monte Carlo method, which is a hybrid method of the quantum Monte Carlo method and variational Monte Carlo theory, to study the Hubbard model. The theory is based on the off-diagonal and the Gutzwiller type correlation factors which are taken into account by a Monte Carlo algorithm. In the 4x4 system our method is able to reproduce the exact results obtained by the diagonalization. An application is given to investigate the half-filled band case of two-dimensional square lattice. The energy is favorably compared with quantum Monte Carlo data.
Cite
@article{arxiv.cond-mat/0206033,
title = {Off-diagonal Wave Function Monte Carlo Studies of Hubbard Model I},
author = {Takashi Yanagisawa and Soh Koike and Kunihiko Yamaji},
journal= {arXiv preprint arXiv:cond-mat/0206033},
year = {2015}
}
Comments
9 pages, 11 figures