102 citations · 378 across the 15 of their papers we have counts for
15 papers
Screening in Hubbard models with long-range interactions
Florian Gebhard, Kevin Bauerbach, Örs Legeza
We provide solid evidence for the long-standing presumption that model Hamiltonians with short-range interactions faithfully reproduce the physics of the long-range Coulomb interac…
Second Wilson number from third-order perturbation theory for the symmetric single-impurity Kondo model at low temperatures
Kevin Bauerbach, Florian Gebhard
We determine the impurity-induced free energy and the impurity-induced zero-field susceptibility of the symmetric single-impurity Kondo model from weak-coupling perturbation theory…
Particle injection into a chain: decoherence versus relaxation for Hermitian and non-Hermitian dynamics
F. Gebhard, K. zu Muenster, J. Ren +3
We investigate a model system for the injection of fermionic particles from filled source sites into an empty chain. We study the ensuing dynamics for Hermitian as well as for non-…
Dynamic density-density correlations in interacting Bose gases on optical lattices
S. Ejima, H. Fehske, F. Gebhard
In order to identify possible experimental signatures of the superfluid to Mott-insulator quantum phase transition we calculate the charge structure factor for the one-dim…
Antiferromagnetic order in multi-band Hubbard models for iron-pnictides
Tobias Schickling, Florian Gebhard, Jörg Bünemann
We investigate multi-band Hubbard models for the three iron 3- bands and the two iron 3- bands in by means of the Gutzwiller variational theor…
Random dispersion approximation for the Hubbard model
S. Ejima, F. Gebhard, R. M. Noack
We use the Random Dispersion Approximation (RDA) to study the Mott-Hubbard transition in the Hubbard model at half band filling. The RDA becomes exact for the Hubbard model in infi…