For both types, the phenomenon of self-trapping occurs.A part of the wave packet stays highly localized near the initial sites and turns into solitons while another part is diffusive with time.

• 对于这两类模型，我们发现在非线性的作用下均出现了自限现象，一部分波包在初始位置附近高度局域化，形成孤子，另一部分则随着时间向外扩散。