  We discuss the role of dissipation in the explosive spinodal decomposition
scenario of hadron production during the chiral transition after a high-energy
heavy ion collision. We use a Langevin description inspired by microscopic
nonequilibrium field theory results to perform real-time lattice simulations of
the behavior of the chiral fields. We show that the effect of dissipation can
be dramatic. Analytic results for the short-time dynamics are also presented.
