%0 Journal Article
%A Creffield, Charles E.
%A Klepfish, E. G.
%A Pike, E. R.
%A Sarkar, Sarben
%T Spectral weight function for the half-filled Hubbard-model:  a singular-value decomposition approach
%D 1995
%@ 0031-9007
%U https://hdl.handle.net/20.500.14352/59933
%X The singular value decomposition technique is used to reconstruct the electronic spectral weight function for a half-filled Hubbard model with on-site repulsion U = 4t from quantum Monte Carlo data. A two-band structure for the single-particle excitation spectrum is found to persist as the lattice size exceeds the spin-spin correlation length. The observed bands are flat in the vicinity of the (0, π), (π, 0) points in the Brillouin zone, in accordance with experimental data for high-temperature superconducting compounds.
%~