Berlin 2005 – wissenschaftliches Programm

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DY: Dynamik und Statistische Physik

DY 52: Statistical Physics far from Thermal Equilibrium

DY 52.1: Vortrag

Mittwoch, 9. März 2005, 12:30–12:45, TU H3010

Aging Properties of Critical Systems: the Renormalization-Group Approach — •Andrea Gambassi — Max-Planck Institut fuer Metallforschung, Heisenbergstr. 3, 70569 Stuttgart

In recent years much interest has been attracted by systems that cannot reach thermodynamic equilibrium because of their slow dynamics. During this everlasting nonequilibrium evolution aging phenomena are observed. A simple instance of such a behaviour is provided by the dynamics that takes place when a system is quenched from its high-temperature phase to the critical point. In the talk I focus on the renormalization-group approach to determine the relevant (universal) quantities, such as the fluctuation-dissipation ratio, associated with the nonequilibrium critical dynamics.