Anomalous Fluctuation and Mode Selection in Dynamics of Spinodal Decomposition

抄録

Spinodal decomposition process is treated by using the approximation that the probability distribution of concentration is a sum of displaced Gaussians. An emphasis is laid on the interplay of the coherent and incoherent motion. In the early stages, the structure function enhances anomalously due to the growth of incoherent fluctuation. In the late stages, the coherency develops and, through the selection of modes, system is found to approach the equilibrium, phase-separated state.