INFRARED DIVERGENCE AND NON-FERMI LIQUID IN MULTICHANNEL DEGENERATE ANDERSON MODEL - II

In the previous studies, we examined roles of infrared divergences in pseudo-particle spectra in the impurity Anderson models with use of th e expansion from the limit of the large spin-orbital degeneracy (1/N-e xpansion). Here, such studies are extended to obtain renormalized form s of frequency-/temperature-dependence of physical quantities such as scattering rate of conduction electrons and spin-, pseudo-spin- and ch arge-susceptibility? where the pseudo-spin represents the channel's de gree of freedom, hy collecting the most infrared-divergent terms in th e 1/N-expansion. The results reconfirm that in single channel models t he infrared divergent terms in the pseudo-particle spectra are complet ely cancelled hy the vertex corrections at each order of the 1/N-expan sion, while in multichannel models the cancelation becomes incomplete and the terms remain in the physical quantities.