In coupled replicator-mutator dynamics with delays and filters, antagonistic branches split into weak, intermediate (delay-induced Hopf), and strong (filter instability) regimes, with antiphase performance signals and a delay-budget rule.
Hopf Bifurcations in Replicator Dynamics with Distributed Delays
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abstract
In this paper, we study the existence and the property of the Hopf bifurcation in the two-strategy replicator dynamics with distributed delays. In evolutionary games, we assume that a strategy would take an uncertain time delay to have a consequence on the fitness (or utility) of the players. As the mean delay increases, a change in the stability of the equilibrium (Hopf bifurcation) may occur at which a periodic oscillation appears. We consider Dirac, uniform, Gamma, and discrete delay distributions, and we use the Poincar\'e- Lindstedt's perturbation method to analyze the Hopf bifurcation. Our theoretical results are corroborated with numerical simulations.
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2026 1verdicts
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Implementation Filters and Delay-Budget Instability in Coupled Replicator--Mutator Dynamics
In coupled replicator-mutator dynamics with delays and filters, antagonistic branches split into weak, intermediate (delay-induced Hopf), and strong (filter instability) regimes, with antiphase performance signals and a delay-budget rule.