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

發布者:王丹丹發布時間:2023-11-21浏覽次數:10

 

江蘇省應用數學(中國礦業大學)中心系列學術報告

報告題目: Zero-wavenumber-gain MI, formation of rogue waves and time-localized solitons inmulticomponent systems with coherent coupling

報告時間:2023112210:00-11:00

報告人:劉磊重慶大學博士

騰訊會議:會議 ID958-636-6498

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 wavestime-localized dark modes which coincides with the condition for the occurrence of the zero-wavenumber-gain MI.

報告人簡介: 劉磊,重慶大學數學與統計學院講師,于2013年和2019年在南開大學和北京郵電大學分别獲得理學學士和博士學位。主要研究興趣包括孤子理論,非線性波的數值和解析計算,以及它們在非線性光纖等方面的應用。目前已獲得國家自然科學青年基金、理論物理專款博士後項目和中國博士後面上資助項目資助。以第一或通訊作者在Physical Review LettersPhysical Review A/EProceedings AChaos等國際期刊發表論文10多篇,被他引用100多次。

 

 

 

 


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