Correlation functions for quasi-linear response theory |
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Authors: | W Brenig |
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Institution: | (1) Physik-Department, Technische Universität München, D-8046 Garching, Germany |
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Abstract: | A quasi-linear regression formula is derived by an expansion around quasi-static equilibrium. It relates the relaxation of thermodynamic forces to the regression of correlations of thermodynamic coordinates in quasi-static equilibrium. Correlation functions and memory kernels can be introduced in almost complete analogy to linear response theory. A non-linear, non-Markovian kinetic equation is derived. The kinetic coefficients are given in terms of correlation functions of stochastic forces in quasi-static equilibrium similar to the linear theory. |
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