Nucleation of Breathers via Stochastic Resonance in Nonlinear Lattices
Nucleation of Breathers via Stochastic Resonance in Nonlinear Lattices
By applying a staggered driving force in a prototypical discrete model with a quartic nonlinearity, we demonstrate the spontaneous formation and destruction of discrete breathers with a selected frequency due to thermal fluctuations. The phenomenon exhibits the striking features of stochastic resonance: a nonmonotonic behavior as noise is increased and …