Random Symmetry Breaking and Freezing in Chaotic Networks

TL;DR

This paper investigates how networks of delay-coupled damped oscillators exhibit chaotic dynamics with randomly frozen amplitudes, revealing a novel symmetry-breaking and freezing phenomenon with many attractors.

Contribution

It introduces the concept of random symmetry breaking and freezing in chaotic networks, supported by analysis of modified Duffing oscillator networks with delayed interactions.

Findings

Networks show chaotic behavior with randomly frozen amplitudes.

Existence of exponentially many frozen chaotic attractors.

Phenomenon observed in networks with pseudo-inverse delayed interactions.

Abstract

Parameter space of a driven damped oscillator in a double well potential presents either a chaotic trajectory with sign oscillating amplitude or a non-chaotic trajectory with a fixed sign amplitude. A network of such delay coupled damped oscillators is shown to present chaotic dynamics while the amplitude sign of each damped oscillator is randomly frozen. This phenomenon of random broken global symmetry of the network simultaneously with random freezing of each degree of freedom is accompanied by the existence of exponentially many randomly frozen chaotic attractors with the ize of the network. Results are exemplified by a network of modified Duffing oscillators with infinite ange pseudo-inverse delayed interactions.