245 citations · 846 across the 27 of their papers we have counts for
5 papers · 1 filter
Numerical minimisation of Gutzwiller energy functionals
Jörg Bünemann, Florian Gebhard, Tobias Schickling +1
We give a comprehensive introduction into an efficient numerical scheme for the minimisation of Gutzwiller energy functionals in studies on multi-band Hubbard models. Our method co…
Gutzwiller theory of band magnetism in LaOFeAs
Tobias Schickling, Florian Gebhard, Jörg Bünemann +3
We use the Gutzwiller variational theory to calculate the ground-state phase diagram and quasi-particle bands of LaOFeAs. The Fe3d--As4p Wannier-orbital basis obtained from density…
Variational study of Fermi-surface deformations in Hubbard models
Jörg Bünemann, Tobias Schickling, Florian Gebhard
We study the correlation-induced deformation of Fermi surfaces by means of a new diagrammatic method which allows for the analytical evaluation of Gutzwiller wave functions in fini…
Time-Dependent Gutzwiller Theory for Multiband Hubbard Models
E. v. Oelsen, G. Seibold, J. Buenemann
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…
The time-dependent Gutzwiller theory for multi-band Hubbard models
E. v. Oelsen, G. Seibold, J. Bünemann
We formulate a multi-band generalisation of the time-dependent Gutzwiller theory. This approach allows for the calculation of general two-particle response functions, which are cru…