Spatiotemporal dynamics of discrete sine-Gordon lattices with sinusoidal couplings
arXiv:cond-mat/9712226 · doi:10.1103/PhysRevE.57.1139
Abstract
The spatiotemporal dynamics of a damped sine-Gordon chain with sinusoidal nearest-neighbor couplings driven by a constant uniform force are discussed. The velocity characteristics of the chain versus the external force is shown. Dynamics in the high- and low-velocity regimes are investigated. It is found that in the high-velocity regime, the dynamics is dominated by rotating modes, the velocity shows a branching bifurcation feature, while in the low-velocity regime, the velocity exhibits step-like dynamical transitions, broken by the destruction of strong resonances.
10 Revtex pages, 8 Eps figures, to appear in Phys. Rev.E 57(1998)