2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/43226We show that the dynamic universality class of the QCD critical point is that of model H and discuss the dynamic critical exponents. We show that the baryon diffusion rate vanishes at the critical point. The dynamic critical index $z$ is close to 3.12 pages. To be published in PRD. Appendix about isospin density added, introduction expandedHigh Energy Physics - PhenomenologyNuclear Theorytext