Plykin-like attractor in non-autonomous coupled oscillators

Details Plykin-like attractor in non-autonomous coupled oscillators Plykin-like attractor in non-autonomous coupled oscillators

2008-11-15

arxiv.org/abs/0811.2489v1

Nonlinear Sciences

Chaotic Dynamics

11 pages, 9 figures

Scientific paper

10.1063/1.3072777

A system of two coupled non-autonomous oscillators is considered. Dynamics of complex amplitudes is governed by differential equations with periodic piecewise continuous dependence of the coefficients on time. The Poincar\'{e} map is derived explicitly. With exclusion of the overall phase, on which the evolution of other variables does not depend, the Poincar\'{e} map is reduced to 3D mapping. It possesses an attractor of Plykin type located on an invariant sphere. Computer verification of the cone criterion confirms the hyperbolic nature of the attractor in the 3D map. Some results of numerical studies of the dynamics for the coupled oscillators are presented, including the attractor portraits, Lyapunov exponents, and the power spectral density.

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