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Second-law-like inequalities with information and their interpretations
KTH, School of Electrical Engineering (EES), Automatic Control.ORCID iD: 0000-0003-1835-2963
2014 (English)In: New Journal of Physics, ISSN 1367-2630, E-ISSN 1367-2630, Vol. 16, 125007- p.Article in journal (Refereed) Published
Abstract [en]

In a thermodynamic process with measurement and feedback, the second law of thermodynamics is no longer valid. In its place, various second-law-like inequalities have been advanced that each incorporate a distinct additional term accounting for the information gathered through measurement. We quantitatively compare a number of these information measures using an analytically tractable model for the feedback cooling of a Brownian particle. We find that the information measures form a hierarchy that reveals a web of interconnections. To untangle their relationships, we address the origins of the information, arguing that each information measure represents the minimum thermodynamic cost to acquire that information through a separate, distinct measurement procedure.

Place, publisher, year, edition, pages
2014. Vol. 16, 125007- p.
Keyword [en]
nonequilibrium thermodynamics, feedback, information theory, optimal control theory
National Category
Other Physics Topics
Identifiers
URN: urn:nbn:se:kth:diva-159120DOI: 10.1088/1367-2630/16/12/125007ISI: 000346823100001Scopus ID: 2-s2.0-84925958925OAI: oai:DiVA.org:kth-159120DiVA: diva2:783849
Funder
Swedish Research Council, 2013-5523
Note

QC 20150127

Available from: 2015-01-27 Created: 2015-01-22 Last updated: 2017-12-05Bibliographically approved

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Sandberg, Henrik

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