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Journal Articles PRL Year : 2009

Experimental study of work fluctuations in a harmonic oscillator

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Abstract

The work fluctuations of a harmonic oscillator in contact with a thermostat and driven out of equilibrium by an external force are studied experimentally. For the work both the transient and stationary state fluctuation theorems hold. The finite time corrections are very different from those of a first order Langevin equation. The heat and work fluctuations are studied when a periodic forcing is applied to the oscillator. The importance of the choice of the ''good work'' to compute the free energy from the Jarzinsky equality is discussed.
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Dates and versions

ensl-00138572 , version 1 (26-03-2007)

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Sylvain Joubaud, Nicolas B. Garnier, Frédéric Douarche, Artyom Petrosyan, Sergio Ciliberto. Experimental study of work fluctuations in a harmonic oscillator. PRL, 2009, 97 (140603), pp.4. ⟨ensl-00138572⟩
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