2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/21025The model of two-level Kondo effect is studied by the Wilson numerical renormalization group method. It is shown that there exist a new type of weak-coupling fixed point other than the strong-coupling fixed point found by Vladar and Zawadowski two decades ago by means of the one-loop and two-loop renormalization group methods.4 pages, 3 figures, SCES'02 at KrakowStrongly Correlated Electronstext