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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >Nonlinear structures of traveling waves in the cubic-quintic complex Ginzburg-Landau equation on a finite domain
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Nonlinear structures of traveling waves in the cubic-quintic complex Ginzburg-Landau equation on a finite domain

机译:有限域上三次三次复数Ginzburg-Landau方程中行波的非线性结构

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We investigate the behavior of traveling waves in a spatial domain with the homogeneous boundary conditions by using the one-dimensional cubic-quintic complex Ginzburg-Landau equation. We focus our work on the absolute and convective instabilities and determine the dynamical regimes that are observed. As a consequence in the convectively unstable regime, the waves ultimately decay at any fixed position. Only when the threshold for the absolute instability is exceeded, the wave patterns may be maintained against the dissipation at the boundary. Consequently, coherent structures may be observed in the last case. We build a new state of phase diagram in the parameter plane spanned by the criticality parameter and the quintic nonlinear coefficient.
机译:我们通过使用一维立方五次复数Ginzburg-Landau方程研究具有均一边界条件的空间域中行波的行为。我们将工作重点放在绝对和对流不稳定性上,并确定观察到的动力状态。作为对流不稳定状态的结果,波最终在任何固定位置衰减。仅当超过绝对不稳定性的阈值时,才可以保持波形图以抵抗边界处的耗散。因此,在最后一种情况下可以观察到相干的结构。我们在由临界参数和五次非线性系数跨越的参数平面中建立新的相图状态。

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