Exact Solution of a Electron System Combining Two Different t-J Models
Condensed Matter
2016-08-15 v2 High Energy Physics - Theory
Abstract
A new strongly correlated electron model is presented. This is formed by two types of sites: one where double occupancy is forbidden, as in the t-J model, and the other where double occupancy is allowed but vacancy is not allowed, as an inverse t-J model. The Hamiltonian shows nearest and next-to-nearest neighbour interactions and it is solved by means of a modified algebraic nested Bethe Ansatz. The number of sites where vacancy is not allowed, may be treated as a new parameter if the model is looked at as a t-J model with impurities. The ground and excited states are described in the thermodynamic limit.
Cite
@article{arxiv.cond-mat/9806106,
title = {Exact Solution of a Electron System Combining Two Different t-J Models},
author = {J. Abad and M. Ríos},
journal= {arXiv preprint arXiv:cond-mat/9806106},
year = {2016}
}
Comments
Some corrections and references added. To be published in J. Phys. A