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Book ChapterDOI

Fokker-Planck Equation

Hannes Risken
- pp 63-95
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TLDR
In this paper, an equation for the distribution function describing Brownian motion was first derived by Fokker [11] and Planck [12] and it is shown that expectation values for nonlinear Langevin equations (367, 110) are much more difficult to obtain.
Abstract
As shown in Sects 31, 2 we can immediately obtain expectation values for processes described by the linear Langevin equations (31, 31) For nonlinear Langevin equations (367, 110) expectation values are much more difficult to obtain, so here we first try to derive an equation for the distribution function As mentioned already in the introduction, a differential equation for the distribution function describing Brownian motion was first derived by Fokker [11] and Planck [12]: many review articles and books on the Fokker-Planck equation now exist [15 – 15]

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Citations
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Journal ArticleDOI

Effects of weak noise on oscillating flows: Linking quality factor, Floquet modes, and Koopman spectrum

Shervin Bagheri
- 22 Sep 2014 - 
TL;DR: In this paper, Gaspard et al. studied the effect of weak noise on self-sustained oscillations for a wide range of parameters, and showed that weak noise induces a damping on the eigenvalues, which increases quadratically with the frequency and linearly with the noise amplitude.
Journal ArticleDOI

Regulatory Control and the Costs and Benefits of Biochemical Noise

TL;DR: A mathematical model is presented that makes it possible to quantify the effect of protein concentration fluctuations on the growth rate of a population of genetically identical cells and predicts that the population's growth rate depends on how the growth rates of a single cell varies with protein concentration, the variance of theprotein concentration fluctuations, and the correlation time of these fluctuations.
Journal ArticleDOI

Strategic spatiotemporal vaccine distribution increases the survival rate in an infectious disease like Covid-19.

TL;DR: In this paper, a strategy for the distribution of vaccines in time and space is proposed, which sequentially prioritizes regions with the most new cases of infection during a certain time frame and compare it with the standard practice of distributing vaccines demographically.
Journal ArticleDOI

A formal view on 2.5 large deviations and fluctuation relations

TL;DR: In this article, the rate function for the level 2.5 of large deviations for pure jump and diffusion processes was obtained by two methods: tilting and a spectral method, for which the scaled cumulant generating function was used.
Journal ArticleDOI

Memory retention and spike-timing-dependent plasticity.

TL;DR: How synaptic weights and memories are retained in models of single neurons and networks equipped with spike-timing-dependent plasticity is explored, demonstrating that plasticity in networks can be regulated by inhibition and suggesting a novel role for inhibition in neural circuits.
References
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Journal ArticleDOI

Fluctuations and Irreversible Processes

TL;DR: In this paper, the probability of a given succession of (nonequilibrium) states of a spontaneously fluctuating thermodynamic system is calculated, on the assumption that the macroscopic variables defining a state are Gaussian random variables whose average behavior is given by the laws governing irreversible processes.
Journal ArticleDOI

The Radiation Theories of Tomonaga, Schwinger, and Feynman

TL;DR: In this article, a unified development of the subject of quantum electrodynamics is outlined, embodying the main features both of the Tomonaga-Schwinger and of the Feynman radiation theory.
Journal ArticleDOI

Covariant formulation of non-equilibrium statistical thermodynamics

TL;DR: In this paper, the diffusion matrix of the Fokker Planck equation is used as a contravariant metric tensor in phase space, and the covariance of the Langevin-equations and the fokker equation is demonstrated.
Journal ArticleDOI

Approximation of the Linear Boltzmann Equation by the Fokker-Planck Equation

TL;DR: In this article, the first two terms of the Kramers-Moyal expansion of the Fokker-Planck equation were used to approximate the linear Boltzmann integral operator.