Synchronization of Integrate and Fire oscillators with global coupling

Details Synchronization of Integrate and Fire oscillators with global coupling Synchronization of Integrate and Fire oscillators with global coupling

1996-07-08

arxiv.org/abs/cond-mat/9607056v1

Physics

Condensed Matter

37 pages, 19 postscript figures, Latex 2e

Scientific paper

10.1103/PhysRevE.54.2334

In this article we study the behavior of globally coupled assemblies of a large number of Integrate and Fire oscillators with excitatory pulse-like interactions. On some simple models we show that the additive effects of pulses on the state of Integrate and Fire oscillators are sufficient for the synchronization of the relaxations of all the oscillators. This synchronization occurs in two forms depending on the system: either the oscillators evolve ``en bloc'' at the same phase and therefore relax together or the oscillators do not remain in phase but their relaxations occur always in stable avalanches. We prove that synchronization can occur independently of the convexity or concavity of the oscillators evolution function. Furthermore the presence of disorder, up to some level, is not only compatible with synchronization, but removes some possible degeneracy of identical systems and allows new mechanisms towards this state.

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