2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/117701In this paper we go deep into the connection between duality and fields redefinition for general bilinear models involving the 1-form gauge field $A$. A duality operator is fixed based on "gauge embedding" procedure. Dual models are shown to fit in equivalence classes of models with same fields redefinitions.High Energy Physics - Theorytext