2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/217787Elements of a restricted variational approach to the nuclear mean-field dynamics, providing the microscopic structure of the low energy collective modes, are summarized. The results are illustrated for the isovector states produced by the proton-neutron interactions in deformed and superfluid nuclei.16 pagesNuclear TheoryNuclear Experimenttext