2009/10/19 by Evelyn Sander, James A. Yorke, Sander, Evelyn +1 · 2 citations
Computer Science · Mathematics · Physics and Astronomy · #Attractor #Bifurcation #CHAOS (operating system) #Cascade #Chaos control and synchronization #Chaotic #Chaotic Dynamics (nlin.CD) #Classical mechanics #Computer science #Control of chaos #Control theory (sociology) #FOS: Physical sciences #Forcing (mathematics) #Geometry #Mathematical analysis #Mathematics #Nonlinear Dynamics and Pattern Formation #Nonlinear system #Orbit (dynamics) #Parameter space #Pendulum #Period-doubling bifurcation #Phase space #Physics #Quantum chaos and dynamical systems #Quantum mechanics #State space #Statistical physics #Statistics #Synchronization of chaos #nlin.CD
paper · pdf · doi:10.48550/arxiv.0910.3570
published in arXiv (Cornell University) (Cornell University) · 4 pages, 4 figures
arxiv created 2009/10/19 · openalex publication_date 2009/10/19 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The presence of a period-doubling cascade in dynamical systems that depend on a parameter is one of the basic routes to chaos. It is rarely mentioned that there are virtually always infinitely many cascades whenever there is one. We report that for one- and two-dimensional phase space, in the transition from no chaos to chaos -- as a parameter is varied -- there must be infinitely many cascades under some mild hypotheses. Our meaning of chaos includes the case of chaotic sets which are not attractors. Numerical studies indicate that this result applies to the forced-damped pendulum and the forced Duffing equations, viewing the solutions once each period of the forcing. We further show that in many cases cascades appear in pairs connected (in joint parameter-state space) by an unstable periodic orbit. Paired cascades can be destroyed or created by perturbations, whereas unpaired cascades are conserved under even significant perturbations.