Non-Poisson dichotomous noise: higher-order correlation functions and aging

Details Non-Poisson dichotomous noise: higher-order correlation functions and aging Non-Poisson dichotomous noise: higher-order correlation functions and aging

2004-02-19

arxiv.org/abs/cond-mat/0402494v1

PHYSICAL REVIEW E, Volume: 71, Article Number: 066109 JUN 2005

Physics

Condensed Matter

Statistical Mechanics

Scientific paper

10.1103/PhysRevE.70.046118

We study a two-state symmetric noise, with a given waiting time distribution $\psi (\tau)$, and focus our attention on the connection between the four-time and the two-time correlation functions. The transition of $\psi (\tau)$ from the exponential to the non-exponential condition yields the breakdown of the usual factorization condition of high-order correlation functions, as well as the birth of aging effects. We discuss the subtle connections between these two properties, and establish the condition that the Liouville-like approach has to satisfy in order to produce a correct description of the resulting diffusion process.

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