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Efficiency Fluctuations in Microscopic Machines
Stockholm University, Faculty of Science, Department of Physics.
Stockholm University, Nordic Institute for Theoretical Physics (Nordita).
Stockholm University, Faculty of Science, Department of Physics.
Number of Authors: 42019 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 122, no 14, article id 140601Article in journal (Refereed) Published
Abstract [en]

Nanoscale machines are strongly influenced by thermal fluctuations, contrary to their macroscopic counterparts. As a consequence, even the efficiency of such microscopic machines becomes a fluctuating random variable. Using geometric properties and the fluctuation theorem for the total entropy production, a universal theory of efficiency fluctuations at long times, for machines with a finite state space, was developed by Verley et al. [Nat. Commun. 5, 4721 (2014); Phys. Rev. E 90, 052145 (2014)]. We extend this theory to machines with an arbitrary state space. Thereby, we work out more detailed prerequisites for the universal features and explain under which circumstances deviations can occur. We also illustrate our findings with exact results for two nontrivial models of colloidal engines.

Place, publisher, year, edition, pages
2019. Vol. 122, no 14, article id 140601
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-168343DOI: 10.1103/PhysRevLett.122.140601ISI: 000463902800004OAI: oai:DiVA.org:su-168343DiVA, id: diva2:1314405
Available from: 2019-05-08 Created: 2019-05-08 Last updated: 2019-05-08Bibliographically approved

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Manikandan, Sreekanth K.Dabelow, LennartEichhorn, RalfKrishnamurthy, Supriya
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