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- W2000832316 abstract "We study generalized fractional Langevin equations in the presence of a harmonic potential. General expressions for the mean velocity and particle displacement, the mean squared displacement, position and velocity correlation functions, as well as normalized displacement correlation function are derived. We report exact results for the cases of internal and external friction, that is, when the driving noise is either internal and thus the fluctuation-dissipation relation is fulfilled or when the noise is external. The asymptotic behavior of the generalized stochastic oscillator is investigated, and the case of high viscous damping (overdamped limit) is considered. Additional behaviors of the normalized displacement correlation functions different from those for the regular damped harmonic oscillator are observed. In addition, the cases of a constant external force and the force free case are obtained. The validity of the generalized Einstein relation for this process is discussed. The considered fractional generalized Langevin equation may be used to model anomalous diffusive processes including single file-type diffusion." @default.
- W2000832316 created "2016-06-24" @default.
- W2000832316 creator A5042369390 @default.
- W2000832316 creator A5044662930 @default.
- W2000832316 creator A5053976837 @default.
- W2000832316 date "2014-02-01" @default.
- W2000832316 modified "2023-09-23" @default.
- W2000832316 title "Correlation functions for the fractional generalized Langevin equation in the presence of internal and external noise" @default.
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- W2000832316 doi "https://doi.org/10.1063/1.4863478" @default.
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