Issue
EPL
Volume 85, Number 6, March 2009
Article Number 60005
Number of page(s) 6
Section General
DOI http://dx.doi.org/10.1209/0295-5075/85/60005
Published online 07 April 2009
EPL, 85 (2009) 60005
DOI: 10.1209/0295-5075/85/60005

Zero-lag synchronization of chaotic units with time-delayed couplings

M. Zigzag1, M. Butkovski1, A. Englert2, W. Kinzel2 and I. Kanter1

1   Minerva Center and Department of Physics, Bar-Ilan University - Ramat-Gan, 52900 Israel
2   Institute for Theoretical Physics, University of Würzburg - Am Hubland, 97074 Würzburg, Germany, EU


received 17 December 2008; accepted in final form 6 March 2009; published March 2009
published online 7 April 2009

Abstract
Zero-lag synchronization (ZLS) is achieved in a very restricted mutually coupled chaotic systems, where the delays of the self-coupling and the mutual coupling are identical or fulfil some restricted ratios. Using a set of multiple self-feedbacks and mutual couplings we demonstrate both analytically and numerically that ZLS is achieved for a wide range of mutual delays. It indicates that ZLS can be achieved without the knowledge of the mutual distance between the communicating partners and has an important implication in the possible use of ZLS in communications networks as well as in the understanding of the emergence of such synchronization in the neuronal activities.

PACS
05.45.-a - Nonlinear dynamics and chaos.

© EPLA 2009