2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/83336Noise 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.7 pages, 2 figures submitted to Phys.Rev.LettersPattern Formation and SolitonsStatistical MechanicsData Analysis, Statistics and Probabilitytext