Dynamics of non-Gaussian fluctuations in model A

Motivated by the experimental search for QCD critical point we perform simulations of a stochastic field theory with purely relaxational dynamics (model A). We verify expected dynamic scaling correlation functions. Using finite size analysis obtain exponent $z=2.026(56)$. investigate time dependent functions higher moments $M^n(t)$ order parameter $M(t)$ $n=1,2,3,4$. same $z$ all $n$, but relaxation constant depends on $n$. also study after quench, where simulation is initialized in high temperature phase, and studied at $T_c$. find that evolution does not follow simple $z$, it involves an early rise followed late stage relaxation.