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DY: Fachverband Dynamik und Statistische Physik

DY 36: Stochastic Thermodynamics

DY 36.1: Talk

Wednesday, March 18, 2020, 10:00–10:15, ZEU 147

Operationally Accessible Bounds on Fluctuations and Entropy Production in Periodically Driven Systems — •Timur Koyuk and Udo Seifert — II. Institut für Theoretische Physik

For periodically driven systems, we derive a family of inequalities that relate entropy production with experimentally accessible data for the mean, its dependence on driving frequency, and the variance of a large class of observables [1]. With one of these relations, overall entropy production can be bounded by just observing the time spent in a set of states. Among further consequences, the thermodynamic efficiency both of isothermal cyclic engines like molecular motors under a periodic load and of cyclic heat engines can be bounded using experimental data without requiring knowledge of the specific interactions within the system. We illustrate these results for a driven three-level system and for a colloidal Stirling engine.
[1] T. Koyuk and U. Seifert, Phys.Rev.Lett.122, 230601(2019).