Different universality classes for SOC in models driven by extremal dynamics
SUPRAS, Institut de Physique B5, Université de Liège, B-4000 Liège, Belgium
Accepted: 22 October 1996
We investigate a simple growth model. The model considers the growth of trees driven by extremal dynamics. Self-organized criticality (SOC) exhibited by the model is discussed. We point out that this tree-like model does not seem to belong to any already studied SOC universality class. This is shown through a discussion of the dynamics and the so-called gap equation which does not hold here.
PACS: 05.40.+j – Fluctuation phenomena, random processes, and Brownian motion / 05.70.Jk – Critical point phenomena
© EDP Sciences, 1997