中国物理B ›› 2008, Vol. 17 ›› Issue (12): 4614-4618.doi: 10.1088/1674-1056/17/12/046
田强1, 徐权2
Xu Quan (徐权)ab, Tian Qiang (田强)b
摘要: This paper studies a discrete one-dimensional monatomic Klein--Gordon chain with only quartic nearest-neighbor interactions, in which the compact-like discrete breathers can be explicitly constructed by an exact separation of their time and space dependence. Introducing the trying method, it proves that compact-like discrete breathers exist in this nonlinear system. It also discusses the linear stability of the compact-like discrete breathers, when the coefficient (β) of quartic on-site potential and the coupling constant (K4) of quartic interactive potential satisfy the given conditions, they are linearly stable.
中图分类号: (Nonlinear dynamics and chaos)