# Self-organized criticality in quantum gravity

@article{Ansari2004SelforganizedCI, title={Self-organized criticality in quantum gravity}, author={Mohammad H. Ansari and Lee Smolin}, journal={Classical and Quantum Gravity}, year={2004}, volume={25}, pages={095016} }

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…

## 17 Citations

### Expanding and self-organizing 2D universe models emerging from frozen trivalent spin networks

- PhysicsClassical and Quantum Gravity
- 2021

We revisit the topic of self-organized criticality (SOC) in simple statistical graph models, with the purpose of capturing essential processes leading to the emergence of macroscopic spacetime from…

### The self-organized de Sitter universe

- Physics
- 2008

We propose a theory of quantum gravity which formulates the quantum theory as a nonperturbative path integral, where each space–time history appears with the weight exp(iSEH), with SEH the…

### Quantum coherence–driven self-organized criticality and nonequilibrium light localization

- PhysicsScience Advances
- 2018

A quantum coherence–controlled self-organized critical transition observed in the light localization behavior of a coherence-driven nanophotonic configuration, which is robust to dissipation, fluctuations, and many-body interactions, exhibits scale-invariant power laws and absence of finely tuned control parameters.

### Big Bang as a critical point

- Physics
- 2014

This essay addresses the issue of gravitational phase transitions in the early universe. We suggest that a second order phase transition observed in the Causal Dynamical Triangulations approach to…

### Self-organized criticality and pattern emergence through the lens of tropical geometry

- Computer ScienceProceedings of the National Academy of Sciences
- 2018

The discovery of a tropical model with self-organized criticality (SOC) behavior is reported, which is continuous, in contrast to all known models of SOC, and is a certain scaling limit of the sandpile model, the first and archetypical model of SOC.

### Big Bang as a Critical Point

- 2017

This article addresses the issue of possible gravitational phase transitions in the early universe. We suggest that a second-order phase transition observed in the Causal Dynamical Triangulations…

### An invitation to loop quantum gravity

- Physics
- 2004

We describe the basic assumptions and key results of loop quantum gravity, which is a background independent approach to quantum gravity. The emphasis is on the basic physical principles and how one…

### Ju n 20 05 An invitation to Loop Quantum Gravity

- Physics
- 2004

We describe the basic assumptions and key results of loop quantum gravity, which is a background independent approach to quantum gravity. The emphasis is on the basic physical principles and how one…

### 25 Years of Self-Organized Criticality: Solar and Astrophysics

- Physics
- 2016

Shortly after the seminal paper “Self-Organized Criticality: An explanation of 1/fnoise” by Bak et al. (1987), the idea has been applied to solar physics, in “Avalanches and the Distribution of Solar…

### Spacetime deformations evolution concept

- Physics
- 2011

I frame a concept that the matter and energy have e volved from a primordial, conformally flat spacetime (starting before the Planck Era). I apply the theory of Darwinism beyond its original sphere…

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