# Thermodynamic time asymmetry in nonequilibrium fluctuations

Abstract : We here present the complete analysis of experiments on driven Brownian motion and electric noise in a $RC$ circuit, showing that thermodynamic entropy production can be related to the breaking of time-reversal symmetry in the statistical description of these nonequilibrium systems. The symmetry breaking can be expressed in terms of dynamical entropies per unit time, one for the forward process and the other for the time-reversed process. These entropies per unit time characterize dynamical randomness, i.e., temporal disorder, in time series of the nonequilibrium fluctuations. Their difference gives the well-known thermodynamic entropy production, which thus finds its origin in the time asymmetry of dynamical randomness, alias temporal disorder, in systems driven out of equilibrium.
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https://hal-ens-lyon.archives-ouvertes.fr/ensl-00180234
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Submitted on : Thursday, October 18, 2007 - 3:52:17 PM
Last modification on : Tuesday, October 19, 2021 - 12:55:34 PM
Long-term archiving on: : Tuesday, September 21, 2010 - 2:38:23 PM

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### Identifiers

• HAL Id : ensl-00180234, version 2
• ARXIV : 0710.3646

### Citation

David Andrieux, Sergio Ciliberto, Nicolas Garnier, Pierre Gaspard, Sylvain Joubaud, et al.. Thermodynamic time asymmetry in nonequilibrium fluctuations. 2007. ⟨ensl-00180234v2⟩

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