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Note on nonequilibrium stationary states and entropy

G. Gallavotti·E. G. D. Cohen
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Abstract

In transformations between nonequilibrium stationary states, entropy might be a not well defined concept. It might be analogous to the ``heat content'' in transformations in equilibrium which is not well defined either, if they are not isochoric ({\it i.e.} do involve mechanical work). Hence we conjecture that un a nonequilbrium stationary state the entropy is just a quantity that can be transferred or created, like heat in equilibrium, but has no physical meaning as ``entropy content'' as a property of the system.

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G. Gallavotti, E. G. D. Cohen. 2003-12-12. Note on nonequilibrium stationary states and entropy. https://doi.org/10.1103/physreve.69.035104

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