Volume 87, Number 6, September 2009
|Number of page(s)||6|
|Published online||07 October 2009|
Dissipation and lag in irreversible processes
Institute for Physical Science and Technology, University of Maryland - College Park, MD 20742, USA
2 Chemical Physics Program, University of Maryland - College Park, MD 20742, USA
3 Department of Chemistry, University of Maryland - College Park, MD 20742, USA
Accepted: 10 September 2009
When a system is perturbed by the variation of external parameters, a lag generally develops between the actual state of the system, , and the equilibrium state corresponding to the current parameter values, . We establish a microscopic, quantitative relation between this lag and the dissipated work that accompanies the process. We illustrate this relation using a model system.
PACS: 05.70.Ln – Nonequilibrium and irreversible thermodynamics / 05.20.-y – Classical statistical mechanics / 05.40.-a – Fluctuation phenomena, random processes, noise, and Brownian motion
© EPLA, 2009
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