Spatial Pattern Formation in External Noise: Theory and Simulation

Details Spatial Pattern Formation in External Noise: Theory and Simulation Spatial Pattern Formation in External Noise: Theory and Simulation

2012-01-23

arxiv.org/abs/1201.4695v1

Nonlinear Sciences

Pattern Formation and Solitons

22 pages, 10 figures

Scientific paper

Spatial pattern formation in excitable fluctuating media was researched analytically from the point of view of the order parameters concept. The reaction-diffusion system in external noise is considered as a model of such medium. Stochastic equations for the unstable mode amplitudes (order parameters), dispersion equations for the unstable mode averaged amplitudes, and the Fokker-Planck equation for the order parameters have been obtained. The developed theory makes it possible to analyze different noise-induced effects, including the variation of boundaries of ordering and disordering phase transitions depending on the parameters of external noise

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