Non-Equilibrium Critical Relaxation of Heisenberg Ferromagnets with Long-Range Correlated Defects

摘要

The dynamic critical behavior of the three-dimensional Heisenberg model with long-range correlated disorder was studied by using short-time Monte Carlo simulations at criticality. The static and dynamic critical exponents are determined. The simulation was performed from ordered initial state. The obtained values of the exponents are in a good agreement with results of the field-theoretic description of the critical behavior of this model in the two-loop approximation.