2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/181497In this paper we study the duality in two-field Quintom models of Dark Energy. We find that an expanding universe dominated by Quintom-A field is dual to a contracting universe with Quintom-B field.5 pages, 3 figuresGeneral Relativity and Quantum CosmologyAstrophysicstext