Intermittent relaxation in hierarchical energy landscapes.

摘要: We numerically simulate a thermalization process in an energy landscape with hierarchically organized metastable states. The initial configuration is chosen to have large excess relative the thermal equilibrium value at running temperature. show that surplus dissipated series of intermittent bursts, or quakes, whose rate decreases as inverse age system. In addition, one observes fluctuations zero-centered Gaussian distribution. These pertain pseudoequilibrium dynamics within single state and do not contribute dissipation. derivative respect logarithm time asymptotically constant comprises temperature-independent part Arrhenius temperature dependence. findings closely mirror recent numerical simulation results obtained for microscopic glassy models. For these models, record-sized been claimed trigger events during low-temperature thermalization. present model are by construction needed changes from another. This property thus suffices explain statistical flow complex systems.