Dresden 2014 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 3: Statistical Physics far from Thermal Equilibrium - Part I

DY 3.2: Vortrag

Montag, 31. März 2014, 09:45–10:00, ZEU 160

Unifying three perspectives on information processing in stochastic thermodynamics — •Andre C Barato and Udo Seifert — II. Institut für Theoretische Physik, Universität Stuttgart, Stuttgart 70550

The relation between information and thermodynamics may be studied using three different approaches: (i) measurement and control, (ii) a tape interacting with a system or (iii) by identifying an implicit Maxwell demon in steady state transport. For a single paradigmatic model we derive the three corresponding second laws from one master fluctuation theorem and discuss their relationship. In particular, we show that both the entropy production involving mutual information between system and controller and the one involving a Shannon entropy difference of an information reservoir like a tape carry an extra term different from the usual current times affinity. Moreover, comparing the usual entropy production from stochastic thermodynamics with the one obtained in approach (ii), we show that the former includes the thermodynamic cost of resetting the tape. Finally, inspired by the discussion on the paradigmatic model we generalize stochastic thermodynamics to the presence of an information reservoir.

Reference: arXiv:1308.4598 (2013)