Nonextensive statistical mechanics, anomalous diffusion and central limit theorems

Details Nonextensive statistical mechanics, anomalous diffusion and central limit theorems Nonextensive statistical mechanics, anomalous diffusion and central limit theorems

2004-12-06

arxiv.org/abs/cond-mat/0412132v1

Physics

Condensed Matter

Statistical Mechanics

Invited paper to appear in the Milan Journal of Mathematics (2005). 14 pages including 2 figures

Scientific paper

We briefly review Boltzmann-Gibbs and nonextensive statistical mechanics as well as their connections with Fokker-Planck equations and with existing central limit theorems. We then provide some hints that might pave the road to the proof of a new central limit theorem, which would play a fundamental role in the foundations and ubiquity of nonextensive statistical mechanics. The basic novelty introduced within this conjectural theorem is the {\it generalization of the hypothesis of independence} of the $N$ random variables being summed. In addition to this, we also advance some nonlinear dynamical (possibly exact) relations which generalize the concepts of Lyapunov exponents, entropy production per unit time, and their interconnection as first proved by Pesin for chaotic systems.

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