Universality classes in directed sandpile models
统计力学
2009-10-31 v2
摘要
We perform large scale numerical simulations of a directed version of the two-state stochastic sandpile model. Numerical results show that this stochastic model defines a new universality class with respect to the Abelian directed sandpile. The physical origin of the different critical behavior has to be ascribed to the presence of multiple topplings in the stochastic model. These results provide new insights onto the long debated question of universality in abelian and stochastic sandpiles.
引用
@article{arxiv.cond-mat/9907307,
title = {Universality classes in directed sandpile models},
author = {Romualdo Pastor-Satorras and Alessandro Vespignani},
journal= {arXiv preprint arXiv:cond-mat/9907307},
year = {2009}
}
备注
5 pages, RevTex, includes 9 EPS figures. Minor english corrections. One reference added