Aging processes in reversible reaction-diffusion systems: Monte Carlo simulations

摘要

Reaction-diffusion systems with reversible reactions generically displaypower-law relaxation towards chemical equilibrium. In this work we investigatethrough numerical simulations aging processes that characterize thenon-equilibrium relaxation. Studying a model which excludes multiple occupancyof a site, we find that the scaling behavior of the two-time correlation andresponse functions are similar to that discovered previously in an exactlysolvable version with no restrictions on the occupation numbers. Especially, wefind that the scaling of the response depends on whether the perturbationconserves a certain quantity or not. Our results point to a high degree ofuniversality in relaxation processes taking place in diffusion-limited systemswith reversible reactions.