Topological characterization of toroidal chaos: A branched manifold for the Deng toroidal attractor

Sylvain Mangiarotti (1) , Christophe Letellier (2)

1 CESBIO - Centre d'études spatiales de la biosphère
2 CORIA - Complexe de recherche interprofessionnel en aérothermochimie

When a chaotic attractor is produced by a three-dimensional strongly dissipative system, its ultimate characterization is reached when a branched manifold-a template-can be used to describe the relative organization of the unstable periodic orbits around which it is structured. If topological characterization was completed for many chaotic attractors, the case of toroidal chaos-a chaotic regime based on a toroidal structure-is still challenging. We here investigate the topology of toroidal chaos, first by using an inductive approach, starting from the branched manifold for the Rossler attractor. The driven van der Pol system-in Robert Shaw's form-is used as a realization of that branched manifold. Then, using a deductive approach, the branched manifold for the chaotic attractor produced by the Deng toroidal system is extracted from data.

Mots clés: Rossler attractor; Dynamical systems; Chaotic regime; Periodic-orbit theory; Phase space methods; Topological properties

Domaines: Science non linéaire [physics]

Sylvain Mangiarotti, Christophe Letellier. Topological characterization of toroidal chaos: A branched manifold for the Deng toroidal attractor. Chaos: An Interdisciplinary Journal of Nonlinear Science, 2021, ⟨10.1063/5.0025924⟩. ⟨hal-03110714⟩