DYNAMIC SOLITONS IN A ONE-DIMENSIONAL NONLINEAR DIATOMIC CHAIN

被引：47

作者：

CHUBYKALO, OA

KOVALEV, AS

USATENKO, OV

机构：

[1] KHARKOV STATE UNIV,KHARKOV 310077,UKRAINE

[2] KHARKOV LOW TEMP PHYS & ENGN INST,KHARKOV 310164,UKRAINE

来源：

PHYSICAL REVIEW B | 1993年 / 47卷 / 06期

关键词：

D O I：

10.1103/PhysRevB.47.3153

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Solitonlike excitations with frequencies in the gap of a linear spectrum are considered for a diatomic chain with small mass difference. It is shown that these excitations represent themselves as a complicated combination of solitons of the acoustic and quasioptical branches of the spectrum. The evolution of these solutions is studied in the phase plane and analytical expressions are obtained. The situation is general for systems having two interacting fields with the same nonlinearity but with different dispersion signs.

引用

页码：3153 / 3160

页数：8

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