Effects of Aging in the Critical Behavior of Anisotropic Ultrathin Heisenberg Films

Results are presented from Monte Carlo studies of the non-equilibrium properties of ferromagnetic Heisenberg films. Effects of aging are observed in non-equilibrium critical behavior. Calculations are made for both high- and low-temperature initial states. The characteristic period of correlation, which diverges at the temperature of the transition in the thermodynamic limit, is obtained as a function of the size of a system and the period of waiting.