2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/82863Interacting boson models provide an elegant and powerful method to describe collective excitations of complex systems by introducing a set of effective degrees of freedom. We review the interacting boson model of nuclear structure and discuss a recent extension to the nucleon and its excited states.29 pages, 3 tables and 11 figures, invited talk at `XL Congreso Nacional de Fisica', Monterrey, MexicoNuclear Theorytext