Spectral density and magnetic susceptibility for the asymmetric degenerate Anderson model

Abstract

With the use of a new diagrammatic formulation, two coupled integral equations for the self-energy functions of the $f$ hole and $f$ particle in the asymmetric degenerate Anderson model are solved numerically. All the diagrams are included in the equations except the cross terms (or the vertex correction). The results for the spectral density function and the magnetic susceptibility show the scaling property described by the renormalization-group theory.