Universality and a numerical ε-expansion of the Abelian Manna model below upper critical dimension

Details Universality and a numerical ε-expansion of the Abelian Manna model below upper critical dimension Universality and a numerical ε-expansion of the Abelian Manna model below upper critical dimension

2012-01-16

arxiv.org/abs/1201.3234v1

Physics

Condensed Matter

Statistical Mechanics

4 pages, 2 figures, 4 tables, submitted to PRE

Scientific paper

The Abelian Manna model of self-organized criticality is studied on various three-dimensional and fractal lattices. The exponents for avalanche size, duration and area distribution of the model are obtained by using a high-accuracy moment analysis. Together with earlier results on lower-dimensional lattices, the present results reinforce the notion of universality below the upper critical dimension and allow us to determine the the coefficients of an \epsilon-expansion. Rescaling the critical exponents by the lattice dimension, a remarkable relation is observed, satisfied by both regular and fractal lattices.

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