Field theory of spinodal decomposition: Comparison with numerical simulations

We present a comparison between the results for spinodal decomposition obtained through the use of recently developed field-theoretic perturbation methods used at lowest order and the results of numerical simulations performed for the same model. We find that agreement between theory and experiment for the quantity commonly used to describe the characteristic domain size (the first zero of the spatial two-point correlation function) is very satisfactory, particularly at moderate noise levels. There are clear discrepancies, however, in the scaling function. We indicate that these may be due to the lack of sharp interfaces in the theory.