Coherent Spatial Structure versus Time Chaos in a Perturbed Sine-Gordon System

Abstract

A novel interplay of coherent spatial structure and temporal chaos is reported for the acdriven, damped sine-Gordon system with breather initial conditions and periodic boundary conditions. The competing tendencies of spatial structures to be stable and of single-particle motions to be chaotic can lead to suppression of chaos, spatio-temporal intermillency, and symmetry-breaking tendencies. Dynamic structure factors provide direct evidence for spalial period halving and renormalized-phonon generation in chaotic regimes.