Self - organized - criticality and synchronization in pulse coupled relaxation oscillator systems: the Olami, Feder and Christensen model and the Feder and Feder model

Details Self - organized - criticality and synchronization in pulse coupled relaxation oscillator systems: the Olami, Feder and Christensen model and the Feder and Feder model Self - organized - criticality and synchronization in pulse coupled relaxation oscillator systems: the Olami, Feder and Christensen model and the Feder and Feder model

1996-07-10

arxiv.org/abs/cond-mat/9607069v1

Physics

Condensed Matter

20 pages, Revtex, 10 postscript figures also available at http://www.lpthe.jussieu.fr/~bottani/Articles/socarticlefig.uu

Scientific paper

10.1016/S0167-2789(96)00275-8

We reexamine the dynamics of the Olami, Feder and Christensen (OFC) model. We show that, depending on the dissipation, it exhibits two different behaviors and that it can or cannot show self - organized - criticality (SOC) and/or synchronization. We also show that while the Feder and Feder model perturbed by a stochastic noise is SOC and has the same exponent for the distribution of avalanche sizes as the OFC model, it does not show synchronization. We conclude that a relaxation oscillator system can be synchronized and/or SOC and that therefore synchronization is not necessary for criticality in these models.

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