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Boundaries of synchronization in oscillator networks

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Author(s):
Medeiros, Everton S. ; Medrano-T, Rene O. ; Caldas, Ibere L. ; Feudel, Ulrike
Total Authors: 4
Document type: Journal article
Source: PHYSICAL REVIEW E; v. 98, n. 3, p. 5-pg., 2018-09-04.
Abstract

We analyze the final state sensitivity of nonlocal networks with respect to initial conditions of their units. By changing the initial conditions of a single network unit, we perturb an initially synchronized state. Depending on the perturbation strength, we observe the existence of two possible network long-term states: (i) The network neutralizes the perturbation effects and returns to its synchronized configuration. (ii) The perturbation leads the network to an alternative desynchronized state. By computing uncertainty exponents of a two-dimensional cross section of the state space, we find the existence of fractal basin boundaries separating synchronized solutions from desynchronized ones. We attribute these features to an unstable chaotic set in which trajectories persist for times indefinitely long in the network. (AU)

FAPESP's process: 11/19296-1 - Nonlinear dynamics
Grantee:Iberê Luiz Caldas
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 13/26598-0 - Fractal Boundaries between chaos and periodicity in the parameters space.
Grantee:Everton Santos Medeiros
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 15/50122-0 - Dynamic phenomena in complex networks: basics and applications
Grantee:Elbert Einstein Nehrer Macau
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 17/05521-0 - Tipping points triggering extinctions in ecological networks
Grantee:Everton Santos Medeiros
Support Opportunities: Scholarships abroad - Research Internship - Post-doctor