6 citations · 8 across the 4 of their papers we have counts for
4 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…
Quasi-particle dynamics of a strongly correlated polaron metal
J. Zhong, H. -B. Schuttler
We develop a simple diagrammatic low-energy boson exchange strong-coupling model for an antiferromagnetically correlated polaronic metal. Important low-temperature features of such…
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…