Volume 79, Number 3, August 2007
|Number of page(s)||5|
|Published online||12 July 2007|
Distribution of entropy production for a colloidal particle in a nonequilibrium steady state
II. Institut für Theoretische Physik, Universität Stuttgart - Pfaffenwaldring 57, 70550 Stuttgart, Germany
2 2. Physikalisches Institut, Universität Stuttgart - Pfaffenwaldring 57, 70550 Stuttgart, Germany
Accepted: 13 June 2007
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.
PACS: 05.40.-a – Fluctuation phenomena, random processes, noise, and Brownian motion / 82.70.Dd – Colloids
© Europhysics Letters Association, 2007
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.