Entropy production and time asymmetry in nonequilibrium fluctuations

Abstract : The time-reversal symmetry of nonequilibrium fluctuations is experimentally investigated in two out-of-equilibrium systems namely, a Brownian particle in a trap moving at constant speed and an electric circuit with an imposed mean current. The dynamical randomness of their nonequilibrium fluctuations is characterized in terms of the standard and time-reversed entropies per unit time of dynamical systems theory. We present experimental results showing that their difference equals the thermodynamic entropy production in units of Boltzmann's constant.
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Contributor : Sergio Ciliberto <>
Submitted on : Friday, March 23, 2007 - 11:44:48 PM
Last modification on : Thursday, April 19, 2018 - 2:54:03 PM
Long-term archiving on : Tuesday, April 6, 2010 - 11:13:10 PM

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D. Andrieux, Pierre Gaspard, Sergio Ciliberto, Nicolas Garnier, Sylvain Joubaud, et al.. Entropy production and time asymmetry in nonequilibrium fluctuations. 2007. ⟨ensl-00138228v1⟩

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