Europhys. Lett.
Volume 74, Number 3, May 2006
Page(s) 391 - 396
Section General
Published online 24 March 2006
Europhys. Lett., 74 (3), pp. 391-396 (2006)
DOI: 10.1209/epl/i2005-10549-4

Restoring a fluctuation-dissipation theorem in a nonequilibrium steady state

T. Speck and U. Seifert

II. Institut für Theoretische Physik, Universität Stuttgart - 70550 Stuttgart, Germany

received 25 November 2005; accepted in final form 1 March 2006
published online 24 March 2006

In a nonequilibrium steady state, the violation of the fluctuation-dissipation theorem (FDT) is connected to breaking detailed balance. For the velocity correlations of a driven colloidal particle we calculate an explicit expression of the FDT violation. The equilibrium form of the FDT can be restored by measuring the velocity with respect to the local mean velocity.

05.40.-a - Fluctuation phenomena, random processes, noise, and Brownian motion.

© EDP Sciences 2006