Mean-field approximation with coherent anomaly method for a non-equilibrium model

Abstract
A mean-field approximation for a 1D non-equilibrium lattice model, known as model A, is considered allowing the authors to compute the probability of a configuration of a given cluster of sites. The mean-field equations are numerically solved in the stationary regime for different cluster sizes L (perpendicular to and the order parameter critical exponent beta ; the results are in agreement with those obtained by other methods.