Physical Review E
We study the behavior of two spatially distributed (sandpile) models which are weakly linked with one another. Using a Monte Carlo implementation of the renormalization-group and algebraic methods, we describe how large-scale correlations emerge between the two systems, leading to synchronized behavior.
E.J. Friedman and A.S. Landsberg . (2001). Large-Scale Synchrony in Weakly Interacting Automata. Physical Review E 63: 051303