Physics – Condensed Matter
Scientific paper
1995-09-26
Phys. Rev. Lett. 75, 4071-4074 (1995)
Physics
Condensed Matter
4 pages + 4 ps figures
Scientific paper
10.1103/PhysRevLett.75.4071
We discuss mean-field theories for self-organized criticality and the connection with the general theory of branching processes. We point out that the nature of the self-organization is not addressed properly by the previously proposed mean-field theories. We introduce a new mean-field model that explicitly takes the boundary conditions into account; in this way, the local dynamical rules are coupled to a global equation that drives the control parameter to its critical value. We study the model numerically, and analytically we compute the avalanche distributions.
Lauritsen Kent Baekgaard
Stanley Eugene H.
Zapperi Stefano
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