2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/109705In a paper submitted to the Arxive some time ago (cond-mat/0509270), R. S. Fishman et al. considered double-exchange model on a Bethe lattice in infinite dimensions using dynamical mean-field theory. We present a somewhat different derivation of their general formula for the magnetic disorder - order transition temperature and comment on the interpretation of the intermediate (between ferromagnetism and antiferromagnetism) phase obtained by the authors.2 pages, revtexStrongly Correlated ElectronsMaterials Sciencetext