The Stochastic Nature of Complexity Evolution in the Fractional Systems

Abstract

The stochastic scenario of relaxation in the complex systems is presented. It is based on a general probabilistic formalism of limit theorems. The nonexponential relaxation is shown to result from the asymptotic self-similar properties in the temporal behavior of such systems. This model provides a rigorous justification of the energy criterion introduced by Jonscher. The meaning of the parameters into the empirical response functions is clarified. This treatment sheds a fresh light on the nature of not only the dielectric relaxation but also mechanical, luminescent and radiochemical ones. In the case of the Cole-Cole response there exists a direct link between the notation of the fractional derivative (appearing in the fractional macroscopic equation often proposed) and the model. But the macroscopic response equations, relating to the Cole-Davidson and Havriliak-Negami relaxations, have a more general integro-differential form in comparison with the ordinary fractional one.

20 pages, 1 table

References in corpus (2)

• Fractional Calculus: Integral and Differential Equations of Fractional Order
• Fractional dynamics from the ordinary Langevin equation

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• Subordination model of anomalous diffusion leading to the two-power-law relaxation responses
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• Variational problems with fractional derivatives: Invariance conditions and Nöther's theorem