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DY: Dynamik und Statistische Physik

DY 46: Poster

DY 46.31: Poster

Donnerstag, 27. März 2003, 15:30–18:00, P1

Anomalous Transport in Disordered Dynamical Systems — •Günter Radons — Institut für Physik, TU Chemnitz, 09107 Chemnitz

We consider simple extended dynamical systems with quenched disorder. It is shown that these systems exhibit anomalous transport properties such as the total suppression of chaotic diffusion and anomalous drift. The relation to random walks in random environments, in particular to the Sinai model, explains also the occurence of ageing in such dynamical systems. Anomalous transport is explained by spectral properties of corresponding propagators and by escape rates in these systems. For special cases we provide a connection to quantum mechanical tight-binding models and Anderson localization. New classes of anomalous transport behavior are found for generalizations of these models.