Simulations for the Extended Hubbard Model Utilizing Nonextensive Statistical Mechanics
Statistical Mechanics
2010-02-16 v2
Abstract
We introduce an investigation about M dimers through half-filled two-site Hubbard model, that is, with two electrons. We utilize the third version of nonextensive statistical mechanics as tool for cal-culating thermodynamical and magnetic parameters as entropy, internal energy and specific heat. By making computer simulations, we vary the q entropic index values between 1 and 2: q=1.1, 1.3, 1.5, 1.7 and 2.0. These values are interesting to study magnetic small systems. We find that the addition of intersite interaction term causes a shifting of all simulated curves in relation to simple Hubbard model.
Cite
@article{arxiv.0912.5386,
title = {Simulations for the Extended Hubbard Model Utilizing Nonextensive Statistical Mechanics},
author = {F. A. R. Navarro and J. F. V. Flores},
journal= {arXiv preprint arXiv:0912.5386},
year = {2010}
}
Comments
6 figures