DISCRETENESS EFFECTS ON THE FORMATION AND PROPAGATION OF BREATHERS IN NONLINEAR KLEIN-GORDON EQUATIONS

被引：52

作者：

DAUXOIS, T ^{[1
]}

PEYRARD, M ^{[1
]}

WILLIS, CR ^{[1
]}

机构：

[1] BOSTON UNIV,DEPT PHYS,BOSTON,MA 02215

来源：

PHYSICAL REVIEW E | 1993年 / 48卷 / 06期

关键词：

D O I：

10.1103/PhysRevE.48.4768

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Oscillating localized solutions are studied in the case of a nonlinear Klein-Gordon equation, extending previous results. The discreteness effects are studied on the propagation of the breathers and we show that the Peierls-Nabarro potential is an increasing function of the amplitude of a breather. Showing the possible role of impurities to trap the modes in a finite region and results for the collision phenomenon between such excitations, we exhibit a mechanism to localize energy as large-amplitude breathers in the lattices. Their creation is thus explained by a physically relevant mechanism.

引用

页码：4768 / 4778

页数：11

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