Details

Autor(en) / Beteiligte

• Andrieux, D
• Gaspard, P
• Ciliberto, S
• Garnier, N
• Joubaud, S
• Petrosyan, A

Titel

Entropy production and time asymmetry in nonequilibrium fluctuations

Ist Teil von

• Physical review letters, 2007-04, Vol.98 (15), p.150601-150601, Article 150601

Ort / Verlag

United States

Erscheinungsjahr

2007

Quelle

PROLA

Beschreibungen/Notizen

• The time-reversal symmetry of nonequilibrium fluctuations is experimentally investigated in two out-of-equilibrium systems: namely, a Brownian particle in a trap moving at constant speed and an electric circuit with an imposed mean current. The dynamical randomness of their nonequilibrium fluctuations is characterized in terms of the standard and time-reversed entropies per unit time of dynamical systems theory. We present experimental results showing that their difference equals the thermodynamic entropy production in units of Boltzmann's constant.