title: Time-dependent Gutzwiller theory for multiband Hubbard models.
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 local-density approximation and Gutzwiller schemes and will therefore be an important tool for the computation of response functions for strongly correlated materials.
authors: Institut für Physik, BTU Cottbus, Germany.
authors: E v
authors: Ev
authors: Oelsen
authors: G
authors: G
authors: Seibold
authors: J
authors: J
authors: Bünemann