6533b854fe1ef96bd12af50a

RESEARCH PRODUCT

Role of the Colored Noise in Spatio-Temporal Behavior of Two Competing Species

Bernardo SpagnoloDavide ValentiAlessandro Fiasconaro

subject

Settore FIS/02 - Fisica Teorica Modelli E Metodi MatematiciStatistical Mechanics (cond-mat.stat-mech)Scale (ratio)General MathematicsLotka–Volterra equationsMultiplicative functionStatistical MechanicSpatio-temporal patternsFOS: Physical sciencesGeneral Physics and AstronomyStatistical mechanicsFunction (mathematics)NoiseLotka-Volterra equationColors of noiseStatistical Mechanics; Noise induced effects; Lotka-Volterra equations; Spatio-temporal patternsStatisticsNoise induced effectStatistical physicsCondensed Matter - Statistical MechanicsMathematicsCoupled map lattice

description

We study the spatial distributions of two randomly interacting species, in the presence of an external multiplicative colored noise. The dynamics of the ecosystem is described by a coupled map lattice model. We find a nonmonotonic behavior in the formation of large scale spatial correlations as a function of the multiplicative colored noise intensity. This behavior is shifted towards higher values of the noise intensity for increasing correlation time of the noise.

yearjournalcountryeditionlanguage
2005-01-01
http://arxiv.org/abs/cond-mat/0509449