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Fluctuations in out-of-equilibrium systems: from theory to experiment

Fluctuations in out-of-equilibrium systems: from theory to experiment We introduce from an experimental point of view the main concepts of fluctuationtheorems for work, heat and entropy production in out-of-equilibrium systems. We willdiscuss the important difference between the applications of these concepts tostochastic systems and to a second class of systems (chaotic systems) where thefluctuations are induced either by chaotic flows or by fluctuating driving forces. Wewill mainly analyze the stochastic systems using the measurements performedin two experiments: (a) a harmonic oscillator driven out of equilibrium by anexternal force; (b) a colloidal particle trapped in a time-dependent double-wellpotential. We will rapidly describe some consequences of fluctuation theorems andsome useful applications to the analysis of experimental data. As an example,the case of a molecular motor will be analyzed in some detail. Finally we willdiscuss the problems related to the applications of fluctuation theorems to chaoticsystems. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Statistical Mechanics: Theory and Experiment IOP Publishing

Fluctuations in out-of-equilibrium systems: from theory to experiment

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References (100)

Copyright
Copyright IOP Publishing Ltd
eISSN
1742-5468
DOI
10.1088/1742-5468/2010/12/P12003
Publisher site
See Article on Publisher Site

Abstract

We introduce from an experimental point of view the main concepts of fluctuationtheorems for work, heat and entropy production in out-of-equilibrium systems. We willdiscuss the important difference between the applications of these concepts tostochastic systems and to a second class of systems (chaotic systems) where thefluctuations are induced either by chaotic flows or by fluctuating driving forces. Wewill mainly analyze the stochastic systems using the measurements performedin two experiments: (a) a harmonic oscillator driven out of equilibrium by anexternal force; (b) a colloidal particle trapped in a time-dependent double-wellpotential. We will rapidly describe some consequences of fluctuation theorems andsome useful applications to the analysis of experimental data. As an example,the case of a molecular motor will be analyzed in some detail. Finally we willdiscuss the problems related to the applications of fluctuation theorems to chaoticsystems.

Journal

Journal of Statistical Mechanics: Theory and ExperimentIOP Publishing

Published: Dec 1, 2010

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