On the fluctuations of the dissipative fluxes around an equilibrium state and the high-frequency limit of wave speed

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Abstract

We show, by means of the extended irreversible thermodynamic formalism, a relation between the fluctuations of the dissipative fluxes around the equilibrium state and the wave velocity of signals in the high-frequency limit. We also define some effective relaxation times to describe the dissipative fluxes in that limit, and discuss a previous result relating fluctuations and the high-frequency behaviour of the dissipative fluxes. © 1990.
Original languageEnglish
Pages (from-to)114-118
JournalPhysics Letters A
Volume151
Issue number3-4
DOIs
Publication statusPublished - 3 Dec 1990

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