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- W1965587404 abstract "The work content of non-equilibrium systems in relation to a heat bath is often analysed in terms of expectation values of an underlying random work variable. However, when optimizing the expectation value of the extracted work, the resulting extraction process is subject to intrinsic fluctuations, uniquely determined by the Hamiltonian and the initial distribution of the system. These fluctuations can be of the same order as the expected work content per se, in which case the extracted energy is unpredictable, thus intuitively more heat-like than work-like. This raises the question of the ‘truly’ work-like energy that can be extracted. Here we consider an alternative that corresponds to an essentially fluctuation-free extraction. We show that this quantity can be expressed in terms of a one-shot relative entropy measure introduced in information theory. This suggests that the relations between information theory and statistical mechanics, as illustrated by concepts like Maxwell’s demon, Szilard engines and Landauer’s principle, extends to the single-shot regime. Thermodynamics and information theory are closely related but the fundamental limitations of this relation are difficult to determine. Combining concepts from one-shot information theory, probability theory and statistical mechanics, the author quantifies extractable work in a non-equilibrium system." @default.
- W1965587404 created "2016-06-24" @default.
- W1965587404 creator A5014646459 @default.
- W1965587404 date "2013-06-26" @default.
- W1965587404 modified "2023-10-10" @default.
- W1965587404 title "Truly work-like work extraction via a single-shot analysis" @default.
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- W1965587404 doi "https://doi.org/10.1038/ncomms2712" @default.
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