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cond-mat.str-el2001★ 6 cited
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…
cond-mat.str-el2001★ 1 cited
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…