Universality in self-organized critical slope models

Details Universality in self-organized critical slope models Universality in self-organized critical slope models

1999-04-26

arxiv.org/abs/cond-mat/9904366v1

Physics

Condensed Matter

6 pages, RevTex, submitted to Physica A

Scientific paper

The dynamics of critical slope self-organized critical models is studied, using a previous mapping into a linear interface depinning model dragged at one end. The model is solved obtaining the complete set of scaling exponents. Some results are supported by previous RG developed for constant force linear interface depinning models but others, like the linear dependency of the susceptibility with system size, are intrinsic of this model which belongs to a different universality class. The comparison of our results with numerical simulations of ricepile and vortexpile models reported in the literature reveals that, as in the constant force case, there are two universality classes corresponding to random and periodic pinning.

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