Speaker
Prof.
Sergio Ciliberto
(CNRS Ecole Normale Supérieure de Lyon)
Description
We report an experimental and theoretical analysis of the
energy exchanged between two conductors kept at different
temperature and coupled by the electric thermal noise.
This system is probably the simplest example to test recent
ideas of stochastic thermodynamics, but in spite of its
simplicity the explanation of the observations is far from
trivial.
Experimentally we determine, as functions of the temperature
difference, the heat flux, the out-of-equilibrium variance
and a conservation law for the fluctuating entropy, which
we justify theoretically. The system is ruled by the same
equations of two Brownian particles kept at different
temperatures and coupled by an elastic force. Our results
set strong constrains on the energy exchanged between
coupled nano-systems kept at different temperature