Time-Dependent Gutzwiller Theory for Multiband Hubbard Models
Strongly Correlated Electrons
2011-11-23 v1
Abstract
Based on the variational Gutzwiller theory, we present a method for the computation of response functions for multiband Hubbard models with general local Coulomb interactions. The improvement over the conventional random-phase approximation is exemplified for an infinite-dimensional two-band Hubbard model where the incorporation of the local multiplet-structure leads to a much larger sensitivity of ferromagnetism on the Hund coupling. Our method can be implemented into LDA+Gutzwiller schemes and will therefore be an important tool for the computation of response functions for strongly correlated materials.
Cite
@article{arxiv.1107.1354,
title = {Time-Dependent Gutzwiller Theory for Multiband Hubbard Models},
author = {E. v. Oelsen and G. Seibold and J. Buenemann},
journal= {arXiv preprint arXiv:1107.1354},
year = {2011}
}
Comments
4 pages, 3 figures