Mean Field Behaviour in a Local Low-Dimensional Model
Condensed Matter
2009-10-22 v1
Abstract
We point out a new mechanism which can lead to mean field type behaviour in nonequilibrium critical phenomena. We demonstrate this mechanism on a two-dimensional model which can be understood as a stochastic and non-conservative version of the abelian sandpile model of Bak {\it et al.} ~\cite{bak}. This model has a second order phase transition whose critical behaviour seems at least partly described by the mean field approximation for percolation, in spite of the low dimension and the fact that all interactions are of short range. Furthermore, the approximation obtained by replacing the lattice by a Bethe tree is very precise in the entire range of the control parameter.
Cite
@article{arxiv.cond-mat/9409067,
title = {Mean Field Behaviour in a Local Low-Dimensional Model},
author = {Hans-Martin Broeker and Peter Grassberger},
journal= {arXiv preprint arXiv:cond-mat/9409067},
year = {2009}
}
Comments
11 pages, NLATEX