STABILITY OF DISCRETE SOLITONS AND QUASICOLLAPSE TO INTRINSICALLY LOCALIZED MODES

被引:112
作者
LAEDKE, EW
SPATSCHEK, KH
TURITSYN, SK
机构
[1] Institut für Theoretische Physik I, Heinrich-Heine-Universität Düsseldorf
关键词
D O I
10.1103/PhysRevLett.73.1055
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
An analytical stability criterion for discrete solitons is presented. Its evaluation proves that discreteness reduces (in comparison with the continuum results) the critical nonlinearity parameter (which separates stable and unstable regimes). Unstable discrete solitons may ''collapse'' into the more stable intrinsically localized states. The theory applies to a discrete nonlinear Schrodinger equation, but can be generalized to other systems.
引用
收藏
页码:1055 / 1059
页数:5
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