2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/22323The quantitative control of the dynamic correlations of single impurity Anderson models is essential in several very active fields. We analyze the one-particle Green function with a constant energy resolution by dynamic density-matrix renormalization. In contrast to other approaches, sharp dominant resonances at high energies are found. Their origin and importance are discussed.4 pages, 5 figures included, final versionStrongly Correlated Electronstext