Multi-mode Spiral Wave in a Coupled Oscillatory Medium

在 1-d 和 2-d 的多模式螺线波浪和它的决裂联合了摆动的媒介被理论上的分析和数字模拟这里学习。在分散关系曲线能是非单调的取决于联合力量的 1-d 系统表演的分析。它可以也在一个系统以内导致不同波浪数字的共存。在 1-d 和 2-d 系统的直接数字的观察遵循分散关系分析的预言。我们的调查结果显示没有尖端蜿蜒地流和波浪与，组织的波浪能也在摆动的媒介被观察没有不同类，否定的组速度能发生。

Multi-mode spiral wave and its breakup in 1-d and 2-d coupled oscillatory media is studied here by theoretic analysis and numerical simulations. The analysis in 1-d system shows that the dispersion relation curve could be nonmonotonic depending on the coupling strength. It may also lead to the coexistence of different wave numbers within one system. Direct numerical observations in 1-d and 2-d systems conform to the prediction of dispersion relation analysis. Our findings indicate that the wave grouping can also be observed in oscillatory media without tip meandering and waves with negative group velocity can occur without inhomogeneity.