The Conductivity Tensor for the Hubbard Model
Strongly Correlated Electrons
2007-05-23 v1
Abstract
A new theoretical analysis of the current-charge and charge-charge propagators is presented for the Hubbard model, using the static approximation for the Composite Operator Method. This approximation manifestly preserves a sum rule which governs the single-site dynamics. We compare our results with those obtained by numerical analysis.
Cite
@article{arxiv.cond-mat/9910463,
title = {The Conductivity Tensor for the Hubbard Model},
author = {F. Mancini and D. Villani},
journal= {arXiv preprint arXiv:cond-mat/9910463},
year = {2007}
}
Comments
14 pages, 3 EPS figures, RevTeX, to be published in Physics Letters A