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Monte Carlo simulation of nearly half-filled Hubbard model in the ground state

✍ Scribed by Nobuo Furukawa; Masatoshi Imada

Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
181 KB
Volume
185-189
Category
Article
ISSN
0921-4534

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✦ Synopsis

Optinlization of the initial trial state in the ground state algorithm for the fermion simulation is performed, which quantitatively reduces the negative sign proi)lem of the Hubbard model in two dimension. Physical quantities of the Hubbard model near half-filling are calculated.

πŸ“œ SIMILAR VOLUMES

Normal state and superconducting propert
Normal state and superconducting properties of the three-band hubbard model from quantum monte carlo simulations
✍ G. Dopf; A. Muramatsu; W. Hanke πŸ“‚ Article πŸ“… 1991 πŸ› Elsevier Science 🌐 English βš– 261 KB

## A set of parameters for the three-band Hubbard model is determlned by comparison of Quantum Monte C~lo results with experimental values for the charge transfer gap. With the obtained parameter set we have calculated the spectral function A(k,t~) for the one-particle Green's function. We find ve