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Chaotic transients, riddled basins, and stochastic transitions in coupled periodic logistic maps
Irina Bashkirtseva1, Lev Ryashko1
1Department of Theoretical and Mathematical Physics, Ural Federal University, Lenina, 51, 620000 Ekaterinburg, Russia.
Abstract:
A system of two coupled map-based oscillators is studied. As units, we use identical logistic maps in two-periodic modes. In this system, increasing coupling strength significantly changes deterministic regimes of collective dynamics with coexisting periodic, quasiperiodic, and chaotic attractors. We study how random noise deforms these dynamical regimes in parameter zones of mono- and bistability, causes "order-chaos" transformations, and destroys regimes of in-phase and anti-phase synchronization. In the analytical study of these noise-induced phenomena, a stochastic sensitivity technique and a method of confidence domains for periodic and multi-band chaotic attractors are used. In this analysis, a key role of chaotic transients and geometry of "riddled" basins is revealed.
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