Distribution of Entropy Production for a Colloidal Particle in a Nonequilibrium Steady State

Details Distribution of Entropy Production for a Colloidal Particle in a Nonequilibrium Steady State Distribution of Entropy Production for a Colloidal Particle in a Nonequilibrium Steady State

2007-05-02

arxiv.org/abs/0705.0324v1

Europhys. Lett. 79, 30002 (2007)

Physics

Condensed Matter

Statistical Mechanics

Scientific paper

10.1209/0295-5075/79/30002

For a colloidal particle driven by a constant force across a periodic potential, we investigate the distribution of entropy production both experimentally and theoretically. For short trajectories, the fluctuation theorem holds experimentally. The mean entropy production rate shows two regimes as a function of the applied force. Theoretically, both mean and variance of the pronounced non-Gaussian distribution can be obtained from a differential equation in good agreement with the experimental data.

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