FINITE-SIZE EFFECTS ON CRITICAL DIFFUSION AND RELAXATION TOWARDS METASTABLE EQUILIBRIUM

We present an analytic study of finite-size effects on-critical diffus ion above and below T-c of three-dimensional Ising-like systems whose order parameter is coupled to-a conserved density; We also calculate t he finite-size relaxation time that governs the critical order-paramet er relaxation towards a metastable equilibrium state below T-c. Two un iversal dynamic amplitude ratios at T-c are predicted and quantitative predictions of dynamic finite-size scaling functions are given that c an be tested by Monte Carlo simulations.