Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2005-01-05
Physics
Condensed Matter
Statistical Mechanics
11 pages, 7 figures
Scientific paper
10.1103/PhysRevE.71.031112
We develop a theory to calculate the effective phase diffusion coefficient and the mean phase velocity in periodically driven stochastic models with two discrete states. This theory is applied to a dichotomically driven Markovian two state system. Explicit expressions for the mean phase velocity, the effective phase diffusion coefficient and the P\'eclet number are analytically calculated. The latter shows as a measure of phase-coherence forced synchronization of the stochastic system with respect to the periodic driving. In a second step the theory is applied to a non Markovian two state model modeling excitable systems. The results prove again stochastic synchronization to the periodic driving and are in good agreement with simulations of a stochastic FitzHugh-Nagumo system.
Prager Tobias
Schimansky-Geier Lutz
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