Atypical Case of the Dielectric Relaxation Responses and its Fractional Kinetic Equation

Author:

Stanislavsky Aleksander,Weron Karina1

Affiliation:

1. Faculty of Fundamental Problems of Technology Wrocław University of Technology Wybrzeże Wyspiańskiego 27 Wrocław – 50-370, Poland

Abstract

Abstract We present a probabilistic model of the microscopic scenario of dielectric relaxation relating to the atypical case of two-power-law responses.The surveyed approach extends the cluster model concept used for the description of the typical, Havriliak-Negami (HN) law. Within the proposed framework, all empirical two-power-law relaxation patterns may be derived. Their relaxation functions are expressed in terms of the three-parameter Mittag-Leffler function, and the kinetic equation takes the pseudodifferential form generalizing the Riemann-Louiville fractional calculus. This provides a clue to explain the universality observed in relaxation phenomena.

Publisher

Walter de Gruyter GmbH

Subject

Applied Mathematics,Analysis

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