Open Physics

Electron spectral density of the half-filled Hubbard model in the atomic limit at finite temperature

Sergei G. Ovchinnikov, Elena I. Shneyder

Published Sep 1, 2003• 3 citations

Abstract

Abstract We have calculated the spectral function and density of states of halffilled two-dimensional Hubbard model in the Hubbard-I approximation assuming an antiferromagnetic long range order at low temperature and compared results to the QMC data. It occurs that calculated functions are in a qualitative agreement with the QMC one. We have also shown that Neel ordered state dispersion has the similar form to the spin density wave one.

DOI: 10.2478/bf02475853

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