sâmbătă, 16 mai 2009
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---Sergio Ciliberto
Injected and dissipated power fluctuations in out of equilibrium systems
We study experimentally the work fluctuations done by an external force
on an harmonic oscillator in contact with a heat bath and on a Brownian particle
confined in a very nonlinear potential. We measure de fluctuations
of the heat dissipated towards the heat bath.
The experimental analysis in the context of Fluctuation Theorem (FT) allows us
to discuss the importance of this theorem for experimental systems.
We discuss the finite time corrections that depend on the observable.
We also show that for the total entropy production rate the FT is verified for all times.-
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