Related Experiment Video
Updated: Jul 30, 2026

Sealable Femtoliter Chamber Arrays for Cell-free Biology
Published on: March 11, 2015
1/f(alpha) noise from self-organized critical models with uniform driving
1Institut fur Theoretische Physik und Astrophysik, Christian-Albrechts-Universitat, Olshausenstrasse 40, 24118 Kiel, Germany.
Abstract:
Using the well-known Olami-Feder-Christensen model as our paradigm, we show how to modify uniform driven self-organized critical models to generate 1/f(alpha) noise. This model can reproduce all the main features of 1/f(alpha) noise: (1) alpha is close to one and does not depend on the dimension of the system. (2) The 1/f(alpha) behavior is found for very low frequencies. (3) The spatial correlations do not obey a power law. That proves that spatially extended systems based on activation-deactivation processes do not have to be point-driven to produce 1/f(alpha) noise. The essential ingredient is a local memory of the activation-deactivation process.
More Related Videos
Related Concept Videos
First Law: Particles in One-dimensional Equilibrium
Forced Oscillations
One-Degree-of-Freedom System
A one-degree-of-freedom system is defined by an independent variable that determines its state and behavior. One example of a one-degree-of-freedom system is a simple harmonic oscillator, such as a...
First Order Systems
When a first-order system is subjected to a unit-step input, its response is characterized by its transfer function. By applying the Laplace transform of the unit-step input to the transfer function, expanding the...
Second Order systems I
By reinterpreting the system, one can derive the closed-loop transfer function, which...
Second Order systems II
If ζ...

