Self-organized criticality in quantum gravity

Details Self-organized criticality in quantum gravity Self-organized criticality in quantum gravity

2004-12-27

arxiv.org/abs/hep-th/0412307v5

Class.Quant.Grav.25:095016,2008

Physics

High Energy Physics

High Energy Physics - Theory

9 pages, 8 figures, revised

Scientific paper

10.1088/0264-9381/25/9/095016

We study a simple model of spin network evolution motivated by the hypothesis that the emergence of classical space-time from a discrete microscopic dynamics may be a self-organized critical process. Self organized critical systems are statistical systems that naturally evolve without fine tuning to critical states in which correlation functions are scale invariant. We study several rules for evolution of frozen spin networks in which the spins labelling the edges evolve on a fixed graph. We find evidence for a set of rules which behaves analogously to sand pile models in which a critical state emerges without fine tuning, in which some correlation functions become scale invariant.

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