Universality in sandpiles
Alessandro Chessa, H. Eugene Stanley, Alessandro Vespignani, Stefano Zapperi
Abstract
We perform extensive numerical simulations of different versions of the sandpile model. We find that previous claims about universality classes are unfounded, since the method previously employed to analyze the data suffered a systematic bias. We identify the correct scaling behavior and conclude that sandpiles with stochastic and deterministic toppling rules belong to the same universality class.
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