2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/195889A consistent description of the confining QCD vacuum as a dual superconductor requires a determination of fundamental parameters such as the superconductor correlation length $ξ$ and the field penetration depth $λ$, which determine whether the superconductor is of type I or type II. We illustrate preliminary results of a lattice determination of $ξ$ for the case of pure Yang-Mills with two colors, obtained by measuring the temporal correlator of a disorder parameter detecting dual superconductivity.4 pages, 2 figures, talk presented at QCD05 (Montpellier) 4-9 July 2005High Energy Physics - Latticetext