ATYPICAL CASE OF THE DIELECTRIC RELAXATION RESPONSES AND ITS FRACTIONAL KINETIC EQUATION

被引:19
|
作者
Stanislavsky, Aleksander [1 ,2 ]
Weron, Karina [3 ]
机构
[1] Natl Acad Sci Ukraine, Inst Radio Astron, 4 Chervonopraporna St, UA-61002 Kharkov, Ukraine
[2] Kharkov Natl Univ, Svobody Sq 4, UA-61022 Kharkov, Ukraine
[3] Wroclaw Univ Technol, Fac Fundamental Problems Technol, Wybrzeze Wyspianskiego 27, PL-50370 Wroclaw, Poland
关键词
fractional calculus; Mittag-Leffler type functions; fractional ordinary and pseudo differential equations; dielectric susceptibility; fractional two-power relaxation; MITTAG-LEFFLER FUNCTIONS; POWER-LAW; DIFFUSION;
D O I
10.1515/fca-2016-0012
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
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.
引用
收藏
页码:212 / 228
页数:17
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