Volume 83, Number 5, September 2008
|Number of page(s)||4|
|Published online||03 September 2008|
Energy dissipation and fluctuation response in driven quantum Langevin dynamics
Graduate School of Science, University of Tokyo - 113-0033, Japan and CREST, Japan Science and Technology (JST) - Saitama, 332-0012, Japan
Accepted: 18 July 2008
Energy dissipation in a nonequilibrium steady state is studied in driven quantum Langevin systems. We study energy dissipation flow to thermal environment, and obtain a general formula for the average rate of energy dissipation using an autocorrelation function for the system variable. This leads to a general expression of the equality that connects the violation of the fluctuation-response relation to the rate of energy dissipation, the classical version of which was first studied by Harada and Sasa.
PACS: 05.40.-a – Fluctuation phenomena, random processes, noise, and Brownian motion / 05.30.-d – Quantum statistical mechanics / 05.70.Ln – Nonequilibrium and irreversible thermodynamics
© EPLA, 2008
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