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cond-mat.str-el2002
Spectral-weight function of the ionic Hubbard model
M. C. Refolio, J. M. Lopez Sancho, J. Rubio
The one-electron spectral-weight function of the half-filled ionic Hubbard model is calculated by means of Quantum Monte Carlo. A metallic regimen occurs between two values of the…
cond-mat.str-el2001
The one-electron Green's function of the half-filled Hubbard model on a triangular lattice
M. C. Refolio, J. M. Lopez Sancho, J. Rubio
The one-electron density of states for the half-filled Hubbard model on a triangular lattice is studied as a function of both temperature and Hubbard U using Quantum Monte Carlo. W…