Nonlinearity of local dynamics promotes multi-chimeras.
Chaos
; 25(8): 083104, 2015 Aug.
Article
em En
| MEDLINE
| ID: mdl-26328555
ABSTRACT
Chimera states are complex spatio-temporal patterns in which domains of synchronous and asynchronous dynamics coexist in coupled systems of oscillators. We examine how the character of the individual elements influences chimera states by studying networks of nonlocally coupled Van der Pol oscillators. Varying the bifurcation parameter of the Van der Pol system, we can interpolate between regular sinusoidal and strongly nonlinear relaxation oscillations and demonstrate that more pronounced nonlinearity induces multi-chimera states with multiple incoherent domains. We show that the stability regimes for multi-chimera states and the mean phase velocity profiles of the oscillators change significantly as the nonlinearity becomes stronger. Furthermore, we reveal the influence of time delay on chimera patterns.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Dinâmica não Linear
/
Análise Espaço-Temporal
Tipo de estudo:
Prognostic_studies
Idioma:
En
Ano de publicação:
2015
Tipo de documento:
Article