High-temperature expansions for the strongly correlated hubbard model in the limit of infinite dimension

Abstract

High'temperature expansions for the strongly correlated Hubbard model in the limit of infinite spatial dimension d —* oo, with hopping scaled by d~1^2, are developed for the Gibbs free energy and susceptibility to order X~10 for arbitrary values of the density. From Fade and other analysis we find no evidence of a phase transition at a finite critical temperature for any value of the density. (formula present). © 1991 IOP Publishing Ltd.