title: Coherence resonance versus synchronization in a periodically forced self-sustained system.
abstract: A fundamental relationship between coherence resonance (CR) and phase synchronization in a self-sustained system in the presence of noise is addressed. A Van der Pol system synchronized by external forcing is taken as an example. It is shown that, in breaking down synchronization, applied noise creates a new ordered motion whose coherence depends resonantly on its intensity, i.e., CR occurs. The same is true for both types of synchronization, via phase locking and via suppression: only the mechanisms of CR differ. The result is valid for any order n:m of synchronization.
authors: Department of Physics, Lancaster University, Lancaster, LA1 4YB, United Kingdom.
authors: A G
authors: AG
authors: Balanov
authors: N B
authors: NB
authors: Janson
authors: D E
authors: DE
authors: Postnov
authors: P V E
authors: PV
authors: McClintock