# Colloquium: Criticality and dynamical scaling in living systems

@article{Muoz2018ColloquiumCA, title={Colloquium: Criticality and dynamical scaling in living systems}, author={Miguel Angel Mu{\~n}oz}, journal={Reviews of Modern Physics}, year={2018} }

Close to a transition between different phases a substance can show universal behavior that is independent of the microscopic details and is characterized by power law correlations and critical exponents. In this Colloquium the concepts of criticality and universality are discussed when applied to biological systems and suggest that in some cases these systems can extract functional advantages close to criticality.

## 268 Citations

### Controlling a complex system near its critical point via temporal correlations

- PhysicsScientific Reports
- 2020

It is demonstrated that feedback from the autocorrelation function of the order parameter fluctuations shifts the system towards its critical point, relying on universal properties of critical systems.

### Transition between chaotic and stochastic universality classes of kinetic roughening

- Physics
- 2020

The dynamics of non-equilibrium spatially extended systems are often dominated by fluctuations, due to e.g.\ deterministic chaos or to intrinsic stochasticity. This reflects into generic scale…

### Finite-time scaling in local bifurcations

- Mathematics, PhysicsScientific Reports
- 2018

This work analytically derive finite-time scaling laws for two ubiquitous transitions given by the transcritical and the saddle-node bifurcation, obtaining exact expressions for the critical exponents and scaling functions.

### Emergence of power laws in noncritical neuronal systems

- BiologyPhysical review. E
- 2019

A simplistic model of neuronal dynamics on networks is considered and it is shown that the degree distribution of the underlying neuronal network may trigger power-law distributions for neuronal avalanches even when the system is not in its critical regime.

### Emergent phenomena in living systems: A statistical mechanical perspective

- BiologyJournal of Biosciences
- 2022

Noise-induced transitions in a stochastic model of gene expression and in a population genetics model which have no analogs when the dynamics are solely deterministic in nature are focused on.

### Feedback Mechanisms for Self-Organization to the Edge of a Phase Transition

- PsychologyFrontiers in Physics
- 2020

Scale-free outbursts of activity are commonly observed in physical, geological, and biological systems. The idea of self-organized criticality (SOC), introduced back in 1987 by Bak, Tang, and…

### Unifying criticality and the neutral theory of neural avalanches.

- Physics
- 2019

It is shown that the neutral theory of neural avalanches can be unified with criticality, which requires fine tuning of control parameters, and rule out self-organized criticality.

### Barrier-controlled nonequilibrium criticality in reactive particle systems.

- PhysicsPhysical review. E
- 2021

It is found that at zero thermal noise, with increasing the activation barrier, the type of transition changes from a continuous conserved directed percolation into a discontinuous dynamic transition by crossing a tricritical point.

### Mechanisms of Self-Organized Quasicriticality in Neuronal Network Models

- BiologyFrontiers in Physics
- 2020

Several proposed biological mechanisms that turn the critical region of a phase transition into an attractor of a dynamics in network parameters like synapses, neuronal gains, and firing thresholds are reviewed.

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