2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/132524The quark fluctuation propagator is evaluated. It defines the diffusion coefficient in the vicinity of the phase transition and the gradient term in the Ginzburg-Landau functional.Contribution to the proceedings of the Rencontres de Moriond on QCD and Hadronic Interactions, La Thuile, Italy, March 2007High Energy Physics - Phenomenologytext