Bethe ansatz results for the 4f-electron spectra of a degenerate Anderson model - art. no. 117601

We show that the density of states for localized 4f electrons coupled to a conduction band calculated in the framework of Bethe ansatz solution for th e degenerate Anderson model qualitatively disagree with the well-known resu lts obtained for the same model but using a variational approach. The scale s of parameters used in our Bethe ansatz calculations to fit the experiment s disagree with the commonly accepted values from other studies. This impli es narrower conduction bands hybridized with 4f orbitals or questions the a pplicability of the Bethe ansatz for a degenerate Anderson model for the hi gh-energy characteristics of some rare-earth systems.