1/f noise in spatially extended systems with order-disorder phase transitions

Details 1/f noise in spatially extended systems with order-disorder phase transitions 1/f noise in spatially extended systems with order-disorder phase transitions

1999-12-15

arxiv.org/abs/patt-sol/9912004v1

Physics

Condensed Matter

Statistical Mechanics

7 pages, 2 figures submitted to Phys.Rev.Letters

Scientific paper

Noise power spectra in spatially extended dynamical systems are investigated, using as a model the Complex Ginzburg-Landau equation with a stochastic term. Analytical and numerical investigations show that the temporal noise spectra are of 1/f^a form, where a=2-D/2 with D the spatial dimension of the system. This suggests that nonequilibrium order-disorder phase transitions may play a role for the universally observed 1/f noise.

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