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Second-law-like inequalities with information and their interpretations
- Horowitz, Jordan M. (author)
-
- Sandberg, Henrik (author)
- KTH,Reglerteknik
- (creator_code:org_t)
- 2014-12-10
- 2014
- English.
- In: New Journal of Physics. - : IOP Publishing. - 1367-2630. ; 16, s. 125007-
- Journal article (peer-reviewed)
Abstract
Subject headings
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- In a thermodynamic process with measurement and feedback, the second law of thermodynamics is no longer valid.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.
Subject headings
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
Keyword
- nonequilibrium thermodynamics
- feedback
- information theory
- optimal control theory
Publication and Content Type
- ref (subject category)
- art (subject category)
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