The role of the Fox-Wright functions in fractional sub-diffusion of distributed order

Details The role of the Fox-Wright functions in fractional sub-diffusion of distributed order The role of the Fox-Wright functions in fractional sub-diffusion of distributed order

2007-11-23

arxiv.org/abs/0711.3779v1

Journal of Computational and Applied Mathematics: Vol 207, No 2, pp.245-257 (2007)

Physics

Mathematical Physics

18 pages. Conference "Special Functions: Asymptotic Analysis and Computation", Santander (Spain) on 4-6 July, 2005

Scientific paper

The fundamental solution of the fractional diffusion equation of distributed order in time (usually adopted for modelling sub-diffusion processes) is obtained based on its Mellin-Barnes integral representation. Such solution is proved to be related via a Laplace-type integral to the Fox-Wright functions. A series expansion is also provided in order to point out the distribution of time-scales related to the distribution of the fractional orders. The results of the time fractional diffusion equation of a single order are also recalled and then re-obtained from the general theory.

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