Self-organized criticality in quantum gravity

  title={Self-organized criticality in quantum gravity},
  author={Mohammad H. Ansari and Lee Smolin},
  journal={Classical and Quantum Gravity},
We study a simple model of spin network evolution motivated by the hypothesis that the emergence of classical spacetime 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 labeling the edges evolve on a fixed graph. We find… 

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