Universality in Dynamic Coarsening of a Fractal Cluster

Details Universality in Dynamic Coarsening of a Fractal Cluster Universality in Dynamic Coarsening of a Fractal Cluster

1997-08-05

arxiv.org/abs/cond-mat/9708036v3

Physics

Condensed Matter

Statistical Mechanics

4 pages, RevTeX, submitted to PRL

Scientific paper

Dynamics of coarsening of a statistically homogeneous fractal cluster, created by a morphological instability of diffusion-controlled growth, is investigated theoretically. An exact mathematical setting of the problem is presented that obeys a global conservation law. A statistical mean field theory is developed that accounts for shadowing during the growth instability and assumes that the total mass and fractal dimension of the cluster remain constant. The coarsening dynamics are shown to be self-similar, and the dynamic scaling exponents are calculated for any Euclidean dimension.

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