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DY: Fachverband Dynamik und Statistische Physik

DY 22: Statistical Physics (general)

DY 22.11: Vortrag

Mittwoch, 2. April 2014, 17:45–18:00, ZEU 160

A Maxwell's demon action on a tape with energy exchange — •Johannes Hoppenau — Carl-von-Ossietzky Universität Oldenburg, 26111 Oldenburg, Germany

Currently, in statistical physics, models that incorporate information processing are of lively interest. Several of these models consider an information carrying tape. Typically, it is assumed that no energy is needed to store information on this tape. We investigate how things change, if this assumption is relaxed. Therefore, we propose a model of a tape, where the information is encoded in a two-level systems, via its energystates. In this model energy is needed to write information. Our focus is on the efficiency of devices that are coupled to such a tape. We derive an upper bound for the efficiency, which is more restrictive than the Carnot bound. This bound holds whether or not the model contain feedback.