Single-particle spectral weight of a two-dimensional Hubbard model

1 August 1992

journal article
research article
Published by American Physical Society (APS) in Physical Review B

Vol. 46 (5), 3183-3186
https://doi.org/10.1103/physrevb.46.3183

Abstract

Numerical results for the single-particle spectral weight A(p,ω) and the density of states N(ω) for a 4×4 Hubbard model are presented. Both the half filled insulating state and the doped metallic state are considered. At half filling the numerical results are compared with the mean-field spin-density-wave single-particle spectral weight, and away from half filling with a renormalized quasiparticle band description. The relationship of these results to experimental photoemission, inverse photoemission, and angular-resolved measurements is discussed.

Keywords

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