Abstract:
The main result of the paper is a theorem stating that the modulation instability of a carrier periodic wave of small (but finite) amplitude propagating in an arbitrary dispersive medium may only be convective in a reference frame moving at a velocity that differs finitely from the group velocity of this wave. The application of this result to the radiation of a resonant wave by a soliton-like “core” is discussed. Such radiation occurs in media where classical solitary waves are replaced with generalized solitary waves as a result of linear resonance of long and short waves. Generalized solitary waves are traveling waves that form a homoclinic structure doubly asymptotic to a periodic wave.
Keywords:radiation of a resonant wave, convective modulation instability, central manifold, reduced system of equations, generalized solitary wave.
Citation:
A. T. Il'ichev, “Convective Modulation Instability of the Radiation of the Periodic Component in the Case of Resonance of Long and Short Waves”, Modern Methods of Mechanics, Collected papers. On the occasion of the 90th birthday of Academician Andrei Gennad'evich Kulikovskii, Trudy Mat. Inst. Steklova, 322, Steklov Math. Inst., Moscow, 2023, 124–132; Proc. Steklov Inst. Math., 322 (2023), 118–126
\Bibitem{Ili23}
\by A.~T.~Il'ichev
\paper Convective Modulation Instability of the Radiation of the Periodic Component in the Case of Resonance of Long and Short Waves
\inbook Modern Methods of Mechanics
\bookinfo Collected papers. On the occasion of the 90th birthday of Academician Andrei Gennad'evich Kulikovskii
\serial Trudy Mat. Inst. Steklova
\yr 2023
\vol 322
\pages 124--132
\publ Steklov Math. Inst.
\publaddr Moscow
\mathnet{http://mi.mathnet.ru/tm4315}
\crossref{https://doi.org/10.4213/tm4315}
\transl
\jour Proc. Steklov Inst. Math.
\yr 2023
\vol 322
\pages 118--126
\crossref{https://doi.org/10.1134/S0081543823040107}
\scopus{https://www.scopus.com/record/display.url?origin=inward&eid=2-s2.0-85180247495}
Citation in format AMSBIB
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