Subdiffusion-limited single species reactions

Details Subdiffusion-limited single species reactions Subdiffusion-limited single species reactions

2001-11-14

arxiv.org/abs/cond-mat/0111261v1

Physics

Condensed Matter

Statistical Mechanics

Scientific paper

We consider the coagulation dynamics A+A -> A and the annihilation dynamics A+A -> 0 for particles moving subdiffusively in one dimension, both on a lattice and in a continuum. The analysis combines the "anomalous kinetics" and "anomalous diffusion" problems, each of which leads to interesting dynamics separately and to even more interesting dynamics in combination. We calculate both short-time and long-time concentrations, and compare and contrast the continuous and discrete cases. Our analysis is based on the fractional diffusion equation and its discrete analog.

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