Metal-Insulator transition in the Generalized Hubbard model
Condensed Matter
2009-10-22 v1
Abstract
We present the exact ground-state wave function and energy of the generalized Hubbard model, subjected to the condition that the number of double occupied sites is conserved, for a wide, physically relevant range of parameters. For one hole and one double occupied site the existence of the ferromagnetic ground-state is proved which allow one to determine the critical value of the on-site repulsion corresponding to the point of metal-insulator transition. For the one dimensional model the exact solution for special values of the parameters is obtained.
Keywords
Cite
@article{arxiv.cond-mat/9412109,
title = {Metal-Insulator transition in the Generalized Hubbard model},
author = {Anatoly A. Ovchinnikov},
journal= {arXiv preprint arXiv:cond-mat/9412109},
year = {2009}
}
Comments
20 pages, LaTex. Mod.Phys.Lett.B 7 (1993) 1397; Journal of Physics: Condensed Matter (to appear)