Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2007-05-13
Physics
Condensed Matter
Statistical Mechanics
5 pages, 4 figures
Scientific paper
In a recent letter, Fisher et al. reported the phenomenon of zero-lag long range isochronous synchronization via dynamical relaying in systems with delay [Phys. Rev. Lett. bf 97, 123902 (2006)]. They reported that when one has two coupled systems A and C, with delay between them, then the introduction of a third element B between A and C will allow them to synchronize even in regions of the parameter space where this was not possible without the presence of B. Here we study in detail the phenomenon and verify that in all the cases studied (including the ones reported by Fisher et al.) this occurs due to the tendency of A and B and B and C to be in antiphase synchronization and if A is in antiphase with B and B is in antiphase with C, it will imply that A and C are inphase. We show this in coupled quadratic maps, Kuramoto and R\"ossler oscillators. We also report that there is a simpler configuration where the same phenomenon occurs and has nearly the same features of the cases studied by Fisher et al.
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