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A Mean-Field Model for Extended Stochastic Systems with Distributed Time Delays | | Daniel Huber
; Lev Tsimring
; | | Date: |
26 Dec 2004 | | Journal: | Complex Systems Intelligence and Modern Technological Applications, 2004, eds. Rouff M., Contsaftis M., p. 108 | | Subject: | Statistical Mechanics; Adaptation and Self-Organizing Systems | cond-mat.stat-mech nlin.AO | | Abstract: | A network of noisy bistable elements with global time-delayed couplings is considered. A dichotomous mean field model has recently been developed describing the collective dynamics in such systems with uniform time delays near the bifurcation points. Here the theory is extended and applied to systems with nonuniform time delays. For strong enough couplings the systems exhibit delay-independent stationary states and delay-dependent oscillatory states. We find that the regions of oscillatory states in the parameter space are reduced with increasing width of the time delay distribution function; that is, nonuniformity of the time delays increases the stability of the trivial equilibrium. However, for symmetric distribution functions the properties of the oscillatory states depend only on the mean time delay. | | Source: | arXiv, cond-mat/0501650 | | Services: | Forum | Review | PDF | Favorites | |
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