Brownian Behavior in Coupled Chaotic Oscillators

Francisco Javier Martín-Pasquín and Alexander N. Pisarchik
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Francisco Javier Martín-Pasquín: Centro de Tecnología Biomédica, Universidad Politécnica de Madrid, 28040 Madrid, Spain
Alexander N. Pisarchik: Centro de Tecnología Biomédica, Universidad Politécnica de Madrid, 28040 Madrid, Spain

Mathematics, 2021, vol. 9, issue 19, 1-14

Abstract: Since the dynamical behavior of chaotic and stochastic systems is very similar, it is sometimes difficult to determine the nature of the movement. One of the best-studied stochastic processes is Brownian motion, a random walk that accurately describes many phenomena that occur in nature, including quantum mechanics. In this paper, we propose an approach that allows us to analyze chaotic dynamics using the Langevin equation describing dynamics of the phase difference between identical coupled chaotic oscillators. The time evolution of this phase difference can be explained by the biased Brownian motion, which is accepted in quantum mechanics for modeling thermal phenomena. Using a deterministic model based on chaotic Rössler oscillators, we are able to reproduce a similar time evolution for the phase difference. We show how the phenomenon of intermittent phase synchronization can be explained in terms of both stochastic and deterministic models. In addition, the existence of phase multistability in the phase synchronization regime is demonstrated.

Keywords: biased Brownian motion; periodic potential; phase difference diffusion; multistability; chaotic oscillators (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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