9 citations · 21 across the 6 of their papers we have counts for
6 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…
Generic Mott-Hubbard phase diagram for extended Hubbard models without Umklapp scattering
Florian Gebhard, Kevin Bauerbach, Örs Legeza
We determine the ground-state phase diagram for the 1/r-Hubbard model with repulsive nearest-neighbor interaction at half band-filling using the density-matrix renormalization grou…
Accurate localization of Kosterlitz-Thouless-type quantum phase transitions for one-dimensional spinless fermions
Florian Gebhard, Kevin Bauerbach, Örs Legeza
We investigate the charge-density wave (CDW) transition for one-dimensional spinless fermions at half band-filling with nearest-neighbor electron transfer amplitude and interac…
Thermodynamics and screening in the Ising-Kondo model
K. Bauerbach, Z. M. M. Mahmoud, F. Gebhard
We introduce and study a simplification of the symmetric single-impurity Kondo model. In the Ising-Kondo model, host electrons scatter off a single magnetic impurity at the origin…
Symmetric single-impurity Kondo model on a tight-binding chain: a comparison of analytical and numerical ground-state approaches
Gergely Barcza, Kevin Bauerbach, Fabian Eickhoff +3
We analyze the ground-state energy, local spin correlation, impurity spin polarization, impurity-induced magnetization, and corresponding zero-field susceptibilities of the symmetr…