搜索

x
中国物理学会期刊

考虑次近邻相互作用下一维单原子链中的孤立波

CSTR: 32037.14.aps.49.1736

SOLITARY WAVE IN ONE-DIMENSIONAL MONOATOMIC CHAIN UNDER THE CONSIDERATION OF THE SECOND-NEIGHBORS INTERACTION

CSTR: 32037.14.aps.49.1736
PDF
导出引用
  • 利用多重尺度法结合准不连续性近似,研究了涉及次近邻相互作用下的一维单原子链中的波动问题,得到了其新的色散关系.结果表明,在同时考虑次近邻相互作用和非谐相互作用的情况下,一维单原子链中不仅存在包络孤立波、扭状和反扭状孤立波,而且存在另一种孤立波形式的元激发——呼吸子.

     

    Employing multiple scales method combined with a quasidiscreteness approximation, we investigate the wave motive equation in a one-dimensional homogeneous lattice chain with second-nearest neighbors interaction, and get a new linear dispers ion relation. The result shows that, taking into consideration the second neares t-neighbor interaction and quartic anharmonic interaction simultaneously, the on e-dimensional homogeneous lattice exhibits not only envelope soliton, kink and a ntikink, but also another non-linear elementary excitation in solitary wave form -the breather.

     

    目录

    /

    返回文章
    返回