Observations of localized structures in nonlinear lattices: Domain walls and kinks.
Observations of localized structures in nonlinear lattices: Domain walls and kinks.
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非线性晶格中局部结构的观察：畴壁和扭结。
DOI：
10.1103/physrevlett.68.1730
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发表时间：
1992
影响因子：
8.6
通讯作者：
Wright
中科院分区：
文献类型：
--
作者：
Denardo;Galvín;Greenfield;Larraza;Putterman;Wright
稳态畴壁和扭结已被观察到在一维非线性晶格阻尼和参数驱动。这些状态是两个扩展的驻波域之间的确定波数的本地化的鲁棒过渡区。的意见是在一个实验晶格的耦合muscums和简化的数值模型。对上截止模中的扭折，发展了一种非线性薛定谔理论.目前还没有关于畴壁和非截止扭结的理论，它们是新的局域结构。
Steady-state domain walls and kinks have been observed in one-dimensional nonlinear lattices that are damped and parametrically driven. These states are localized robust transition regions between two extended standing-wave domains of definite wave number. The observations are made in an experimental lattice of coupled pendulums and in simplified numerical models. A nonlinear Schr\"odinger theory is developed for kinks in the upper cutoff mode. There is currently no theory for the domain walls and noncutoff kinks, which are fundamentally new localized structures.