2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/101833The scaling behavior of Anderson impurity models each of which with a different site energy epsilon_i is examined close to the Mott-Anderson transition. Depending on the impurity energy epsilon_i, in the critical regime the site turns into a local magnetic moment, as indicated by a vanishing quasiparticle weight Z -> 0, or remains nearly doubly occupied or nearly empty, corresponding to Z -> 1. In this paper, we present the scaling behavior of Z as a function of the on-site energy epsilon_i and the distance t to the transition, and interpret our result in terms of an appropriate beta function beta(Z).8 pages, 8 figures; version accepted for publication in Phys. Rev. BStrongly Correlated ElectronsDisordered Systems and Neural Networkstext