双原子耦合摆阵中孤子的振幅回归现象

STUDY ON THE AMPLITUDE REGRESSION PHENOMENA OF SOLITON IN DIATOMIC COUPLED PENDULUM LATTICE

利用带阻尼参数激励的一维双原子非线性耦合摆阵，实验上观察到局域孤子的摆幅随激励参数的变化，而呈现稳定的、准周期的、周期的或随机的现象。

Using a one dimensional damped and parametrically driven diatomic nonlinear coupled pendulum lattice, we find for the first time in the macro experiment that the amplitude of localized soliton is stable, quasiperiodic, periodic or random depending on the driven parameter. Theoretically, these experimental results can be explained by the solution of a quintic nonlinear Schrdinger equation.