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.
https://hal-ens-lyon.archives-ouvertes.fr/ensl-00138572
Contributor : Sergio Ciliberto
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Submitted on : Monday, March 26, 2007 - 10:29:39 PM
Last modification on : Wednesday, November 20, 2019 - 2:50:39 AM
Long-term archiving on: Wednesday, April 7, 2010 - 1:45:24 AM
Sylvain Joubaud, Nicolas Garnier, Frédéric Douarche, Artyom Petrosyan, Sergio Ciliberto. Experimental study of work fluctuations in a harmonic oscillator. PRL, 2009, 97 (140603), pp.4. ⟨ensl-00138572⟩
