Low-energy models for correlated materials: bandwidth renormalization from Coulombic screening
Strongly Correlated Electrons
2014-12-16 v1
Abstract
We provide a prescription for constructing Hamiltonians representing the low energy physics of correlated electron materials with dynamically screened Coulomb interactions. The key feature is a renormalization of the hopping and hybridization parameters by the processes that lead to the dynamical screening. The renormalization is shown to be non-negligible for various classes of correlated electron materials. The bandwidth reduction effect is necessary for connecting models to materials behavior and for making quantitative predictions for low-energy properties of solids.
Keywords
Cite
@article{arxiv.1204.4900,
title = {Low-energy models for correlated materials: bandwidth renormalization from Coulombic screening},
author = {M. Casula and Ph. Werner and L. Vaugier and F. Aryasetiawan and A. J. Millis and S. Biermann},
journal= {arXiv preprint arXiv:1204.4900},
year = {2014}
}
Comments
4 pages, 2 figures