Berlin 2012 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 25: Brownian Motion and Transport

DY 25.9: Vortrag

Donnerstag, 29. März 2012, 12:00–12:15, MA 004

Thermodynamics, fluctuation relations and transport in presence of state-dependent diffusion — •Ronald Benjamin — Institut fuer Theoretische Physik II, Universitaet Duesseldorf, D-40225 Duesseldorf, Germany

It is well known that inhomogeneous temperature or state-dependent diffusion can induce transport of a Brownian particle in one direction. In the presence of an external load the system can work as a heat engine or a refrigerator. We discuss the transport coherence and efficiency of this system, otherwise known as the Buettiker-Landauer motor. A recently derived fluctuation theorem for heat engines is also tested by applying it to this system.