Some exact results for the multicomponent t-J model
Condensed Matter
2009-10-28 v1
Abstract
We present a generalization of the Sutherland's multicomponent model. Our extension includes both the ferromagnetic and the antiferromagnetic t-J model for any value of the exchange coupling J and the hopping parameter t. We prove rigorously that for one dimensional chains the ground-state of the generalized model is non-degenerate. As a consequence, the ordering of energy levels of the antiferromagnetic t-J model is determined. Our result rigorously proves and extends the analysis carried out by Sutherland in establishing the phase diagram of the model as a function of the number of components.
Cite
@article{arxiv.cond-mat/9609107,
title = {Some exact results for the multicomponent t-J model},
author = {Antimo Angelucci and Sandro Sorella},
journal= {arXiv preprint arXiv:cond-mat/9609107},
year = {2009}
}
Comments
11 pages, RevTeX 3.0, no figures