Search results for "Noise-induced pattern formation"

showing 2 items of 2 documents

Pattern formation and spatial correlation induced by the noise in two competing species

2004

We analyze the spatio-temporal patterns of two competing species in the presence of two white noise sources: an additive noise acting on the interaction parameter and a multiplicative noise which affects directly the dynamics of the species densities. We use a coupled map lattice (CML) with uniform initial conditions. We find a nonmonotonic behavior both of the pattern formation and the density correlation as a function of the multiplicative noise intensity.

Coupled Map LatticeSettore FIS/02 - Fisica Teorica Modelli E Metodi MatematiciStatistical Mechanics (cond-mat.stat-mech)Noise-induced pattern formationMultiplicative noiseFOS: Physical sciencesCoupled Map Lattice; Multiplicative noise; Noise-induced pattern formation; Competing speciesCompeting speciesCondensed Matter - Statistical Mechanics
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Nonmonotonic behavior of spatiotemporal pattern formation in a noisy Lotka-Volterra system

2004

The noise-induced pattern formation in a population dynamical model of three interacting species in the coexistence regime is investigated. A coupled map lattice of Lotka-Volterra equations in the presence of multiplicative noise is used to analyze the spatiotemporal evolution. The spatial correlation of the species concentration as a function of time and of the noise intensity is investigated. A nonmonotonic behavior of the area of the patterns as a function of both noise intensity and evolution time is found.

Coupled Map LatticeSettore FIS/02 - Fisica Teorica Modelli E Metodi MatematiciStatistical Mechanics (cond-mat.stat-mech)Noise-induced pattern formationMultiplicative noiseQuantitative Biology::Populations and EvolutionFOS: Physical sciencesInteracting speciesCoupled Map Lattice; Multiplicative noise; Noise-induced pattern formation; Interacting speciesCondensed Matter - Statistical Mechanics
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