4-29 September 2017
Nordita, Stockholm
Europe/Stockholm timezone

The thermodynamic uncertainty relation

26 Sep 2017, 10:00
1h
122:026 (Nordita, Stockholm)

122:026

Nordita, Stockholm

Speaker

Udo Seifert (University of Stuttgart)

Description

The thermodynamic uncertainty relation conjectured in 2015 [1] and proven using large deviation theory in 2016 [2] provides a universal constraint relating mean and dispersion of any current in a driven system with the overall entropy production. I will first introduce the basic concepts behind this relation and then discuss a few of its applications. Prominent amomg those are a universal model-free bound on the efficiency of molecular motors [3] and insight into the current debate whether or not heat engines can approach Carnot efficiency at finite power [4]. Stronger versions of this bound require knowledge of the underlying topology and driving affinities of the network [5]. [1] A. C. Barato and U.S., Phys. Rev. Lett. 114, 158101, 2015 [2] T. R. Gingrich, et al, Phys. Rev. Lett. 116, 120601, 2016 [3] P. Pietzonka, A. C. Barato, and U.S., J. Stat. Mech., 124004, 2016 [4] P. Pietzonka and U.S., arxiv 1705.05817. [5] P. Pietzonka, A. C. Barato, and U. Seifert J Phys A, 49, 34LT01, 2016

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