A mean field approach to multiple, long-delayed systems

Giovanni Giacomelli; Antonio Politi

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arXiv · 2606.12652

A mean field approach to multiple, long-delayed systems

Giovanni Giacomelli·Antonio Politi

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Abstract

The concept of multiple, long-delayed feedback systems is introduced and discussed with reference to a paradigmatic model. We analyse how the resulting chaotic dynamics is affected by the delay distribution. Via a mean-field approach, we show that a spatio-temporal representation equivalent to the one developed for the single-delay can be extended to this wider class of dynamical systems. Numerical simulations are complemented by a theoretical study based on a multiple-scale analysis, which, in the vicinity of a Hopf bifurcation, allows mapping the initial model onto a complex Ginzburg Landau equation. As a result, we find that the only relevant feature influenced by the multiple delays is the size of the coherent spatio-temporal structures which, in turn, depends exclusively on a generalized {\it variance} of the delay distribution.

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Giovanni Giacomelli, Antonio Politi. 2026-06-10. A mean field approach to multiple, long-delayed systems. https://arxiv.org/abs/2606.12652

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