114 citations · 124 across the 5 of their papers we have counts for
5 papers
Screened-interaction expansion for the Hubbard model and determination of the quantum Monte Carlo Fermi surface
G. Esirgen, H. -B. Schuttler, C. Grober +1
We develop a systematic self-consistent perturbative expansion for the self energy of Hubbard-like models. The interaction lines in the Feynman diagrams are dynamically screened by…
Screening of long-range Coulomb interactions in the quasi two-dimensional extended Hubbard model: A combined quantum Monte Carlo and Feynman diagram study
H. -B. Schüttler, C. Gröber, H. G. Evertz +1
By combining fermion Quantum Monte Carlo (QMC) simulations with diagrammatic theory, we have calculated the dielectric screening and the screened potential, in a quasi 2D Hubbard m…
Overscreening in Hubbard electron systems
H. -B. Schüttler, C. Gröber, H. G. Evertz +1
We show that doping-induced charge fluctuations in strongly correlated Hubbard electron systems near the 1/2-filled, insulating limit cause overscreening of the electron-electron C…
Magnetic Properties of YBa_2Cu_3O_{7-δ} in a self-consistent approach: Comparison with Quantum-Monte-Carlo Simulations and Experiments
G. Hildebrand, E. Arrigoni, C. Gröber +1
We analyze single-particle electronic and two-particle magnetic properties of the Hubbard model in the underdoped and optimally-doped regime of \YBCO by means of a modified version…
Pseudogaps and their Interplay with Magnetic Excitations in the doped 2D Hubbard Model
R. Preuss, W. Hanke, C. Gröber +1
On the basis of Quantum Monte Carlo simulations of the two-dimensional Hubbard model which cover the doping range from the under- to the over-doped regime, we find that the single-…