2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/174922A unique transition state is a precursor of quark matter formation. We point out the hallmarks of this state and evaluate the quark diffusion coefficient in the vicinity of the QCD critical line.3 pages, Talk at the 15th International Seminar "Quarks-2008"High Energy Physics - Phenomenologytext