2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/41108If quark matter exists in the cores of neutron stars, it is most likely color superconducting. Thus a phase transition from free to paired quark matter might occur during the first minute of proto-neutron star evolution. In this talk I discuss how critical behavior of the medium will modify neutrino diffusion, possibly leading to a short temporal variation in the neutrino signal detected on Earth.6 pages, 4 figures, includes econfmacros.tex; talk at "Compact Stars in the QCD Phase Diagram", Nordita, 15-18 August 2001High Energy Physics - Phenomenologytext