中国物理B ›› 2007, Vol. 16 ›› Issue (1): 223-227.doi: 10.1088/1009-1963/16/1/038
夏庆林, 易健宏, 彭元东, 叶途明, 李丽娅, 王红忠
Xia Qing-Lin(夏庆林)†, Yi Jian-Hong(易健宏), Peng Yuan-Dong(彭元东), Ye Tu-Ming(叶途明), Li Li-Ya(李丽娅), and Wang Hong-Zhong(王红忠)
摘要: This paper studies the evolution of wave in the system of a pure anharmonic lattice with a double well on-site potential by numerical calculation. It finds that an initial distribution of static or moving wave can evolve into two travelling soliton-like trains with contrary directions and a region of oscillation in this lattice system. It presents that some cases with cosine-square-shape and Gaussian-shape initial distribution of static or moving wave will produce ordered soliton-like train. Careful numerical observation shows that the centre oscillation region in this system may act as a resource of generating soliton-like train.
中图分类号: (Solitons)