Issue
EPL
Volume 87, Number 4, August 2009
Article Number 40001
Number of page(s) 6
Section General
DOI http://dx.doi.org/10.1209/0295-5075/87/40001
Published online 31 August 2009
EPL, 87 (2009) 40001
DOI: 10.1209/0295-5075/87/40001

Suppression and recovery of spatiotemporal chaos in a ring of coupled oscillators with a single inactive site

Hiroaki Daido

Department of Mathematical Sciences, Graduate School of Engineering, Osaka Prefecture University Sakai 599-8531, Japan


received 4 June 2009; accepted in final form 31 July 2009; published August 2009
published online 31 August 2009

Abstract
The effect of a single inactive site is studied on spatiotemporal dynamics in a ring of locally coupled Stuart-Landau oscillators. An inactive site is where a damped oscillator is placed instead of an active (i.e. spontaneous) one. It is numerically shown that such a site suppresses spatiotemporal chaos (STC) in some region of a parameter plane. How STC recovers as a parameter is varied is elucidated by introducing some order parameters quantifying the degree of phase-locking and frequency synchronization between each active oscillator and the inactive one.

PACS
05.45.Xt - Synchronization; coupled oscillators.
05.45.-a - Nonlinear dynamics and chaos.

© EPLA 2009