报告题目：Zero-wavenumber-gain MI, formation of rogue waves and time-localized solitons in multicomponent systems with coherent coupling

主讲人：刘磊 讲师（重庆大学）

报告时间：2024年06月01日下午16:20-17:00

报告地点：湖畔书屋 211

报告摘要：It is known that rogue waves (RWs) are generated by the modulational instability (MI) of the baseband type. Starting with the Bers-Kaup-Reiman system for three-wave resonant interactions, we identify a specific RW-building mechanism based on MI which includes zero wavenumber in the gain band. An essential finding is that this mechanism works solely under a linear relation between the MI gain and a vanishingly small wavenumber of the modulational perturbation. We also report the emergence of a previously unexplored species of solitary waves，time-localized dark modes，which coincides with the condition for the occurrence of the zero-wavenumber-gain MI.

个人简历：刘磊，重庆大学数学与统计学院讲师，于2013年和2019年在南开大学和北京邮电大学分别获得理学学士和博士学位。主要研究兴趣包括孤子理论，非线性波的数值和解析计算，以及它们在非线性光纤等方面的应用。目前已获得国家自然科学青年基金、理论物理专款博士后项目和中国博士后面上资助项目资助。以第一或通讯作者在Physical Review Letters，Physical Review A/E、Proceedings A，Chaos等国际期刊发表论文10多篇，被他引用100多次。