Volume 71, Number 1, July 2005
|Page(s)||8 - 14|
|Published online||27 May 2005|
Nonuniversal exponents in sandpiles with stochastic particle number transfer
Institut für Theoretische Physik, Universität zu Köln Zülpicher Strasse 77, 50937 Köln, Germany
Accepted: 3 May 2005
We study fixed density sandpiles in which the number of particles transferred to a neighbor on relaxing an active site is determined stochastically by a parameter p. Using an argument, the critical density at which an active-absorbing transition occurs is found exactly. We study the critical behavior numerically and find that the exponents associated with both static and time-dependent quantities vary continuously with p.
PACS: 02.50.-r – Probability theory, stochastic processes, and statistics / 64.60.-i – General studies of phase transitions / 05.65.+b – Self-organized systems
© EDP Sciences, 2005
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