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arXiv 2009.12951nlin.PSnlin.SI
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不稳定凝聚体中有理剖面的流氓波及其孤子模型

Rogue waves with rational profiles in unstable condensate and its solitonic model

D. S. Agafontsev, A. A. Gelash

摘要:

在这份简短的报告中,我们在数值上研究了(i)调制不稳定平面波在其长时间统计稳定状态下的自发出现,以及(ii)代表这种状态的孤子模型的束缚态多孤子解[Gelash et al,PRL 123,234102(2019)]。我们的分析集中在最大的流氓波的队列,我们发现他们几乎相同的动力学和统计特性的两个系统,这强烈表明,流氓波形成的调制不稳定性的情况下的主要机制是多孤子相互作用。此外,我们证明,大多数最大的流氓波是非常好的近似-同时在空间和时间-由振幅缩放的合理呼吸的解决方案的二阶。

英文摘要:

In this brief report we study numerically the spontaneous emergence of rogue waves in (i) modulationally unstable plane wave at its long-time statistically stationary state and (ii) bound-state multi-soliton solutions representing the solitonic model of this state [Gelash et al, PRL 123, 234102 (2019)]. Focusing our analysis on the cohort of the largest rogue waves, we find their practically identical dynamical and statistical properties for both systems, that strongly suggests that the main mechanism of rogue wave formation for the modulational instability case is multi-soliton interaction. Additionally, we demonstrate that most of the largest rogue waves are very well approximated -- simultaneously in space and in time -- by the amplitude-scaled rational breather solution of the second order.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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