  We study nonequilibrium effects at the QCD phase transition within the
framework of Polyakov loop extended chiral fluid dynamics. The quark degrees of
freedom act as a locally equilibrated heat bath for the sigma field and a
dynamical Polyakov loop. Their evolution is described by a Langevin equation
with dissipation and noise. At a critical point we observe the formation of
long-range correlations after equilibration. During a hydrodynamical expansion
nonequilibrium fluctuations are enhanced at the first order phase transition
compared to the critical point.
