Almost Complete and Equable Heteroclinic Networks

• Type: Article in International Scientific Journal
• Date: 2020

Authors

Ashwin, P (Author) Other; Castro, SBSD (Author) FEP; Lohse, A (Author) Other

Journal

Title: Journal of Nonlinear Science

Vol. 30

Pages: 1-22

ISSN: 0938-8974

Publisher: Springer Nature

Indexing

ISI Web of Knowledge - 13 Citations

Scopus - 14 Citations

Other information

Authenticus ID: P-00Q-WVJ

DOI: 10.1007/s00332-019-09566-z

Abstract (EN): Heteroclinic connections are trajectories that link invariant sets for an autonomous dynamical flow: these connections can robustly form networks between equilibria, for systems with flow-invariant spaces. In this paper, we examine the relation between the heteroclinic network as a flow-invariant set and directed graphs of possible connections between nodes. We consider realizations of a large class of transitive digraphs as robust heteroclinic networks and show that although robust realizations are typically not complete (i.e. not all unstable manifolds of nodes are part of the network), they can be almost complete (i.e. complete up to a set of zero measure within the unstable manifold) and equable (i.e. all sets of connections from a node have the same dimension). We show there are almost complete and equable realizations that can be closed by adding a number of extra nodes and connections. We discuss some examples and describe a sense in which an equable almost complete network embedding is an optimal description of stochastically perturbed motion on the network.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 22