【摘要】 同时考虑次近邻谐振相互作用和三次方、四次方非谐相互作用 ,利用多重尺度结合准离散近似方法去计算晶格振动行为 ,发现一维非线性点阵中存在包络孤子及正扭结型包络孤子、反扭结型包络孤子 ,解释了自局域结构的幅度只取决于点阵中的固有参数的实验现象更多还原

【Abstract】 Considering the second nearest neighbor interaction and cubic,quartic anharmonic interactions simultaneously, we employ the multiple scales method combined with a quasidiscreteness approximation to calculate the lattice vibration.It is shown that the kind of nonlinear chain exhibits envelope soliton,envelope kink and envelope antikink soliton.These results can also be used to explain the experimental phenomena that the kink amplitude of the self localized structure is determined only by the intrinsic properties of its lattices.更多还原