2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/228765We construct a classical vortex string solution in a Seiberg-dual theory of N=1 supersymmetric SO(N_c) QCD which flows to a confining phase. We claim that this vortex string is a QCD string, as previouly argued by M.Strassler. In SO(N_c) QCD, it is known that stable QCD strings exist even in the presence of dynamical quarks. We show that our vortex strings are stable in the Seiberg-dual theory.15 pages, 1 figureHigh Energy Physics - Theorytext