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DY: Dynamik und Statistische Physik

DY 51: Einstein Symposium Brownian Motion, Diffusion and Beyond (SYBM) – Contributed Talks II

DY 51.5: Talk

Wednesday, March 9, 2005, 11:15–11:30, TU H2032

Why Hopping a Zig-zag Course — •Udo Erdmann¹, Niko Komin¹, Lutz Schimansky-Geier¹, Igor M. Sokolov¹ und Frank Moss² — ¹Humboldt-Universität zu Berlin, Instiut für Physik — ²Center for Neurodynamics, University of Missouri at St. Louis

We investigate self-moving particles which prefer to hop with a certain turning angle equally distributed to the right or left. We assume this turning angle distribution to be given by a double Gaussian distributions. Based on the model of active Brownian particles and using the Green-Kubo formula we calculate the diffusion coefficient in dependence on the mean and the dispersion of the turning angles. It is shown that bounded distribution of food in patches will be optimally consumed by the objects if the hop preferable with a given angle and not straight forwardly