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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2006, Volume 83, Issue 5, Pages 241–245
(Mi jetpl1257)
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This article is cited in 5 scientific papers (total in 5 papers)
NONLINEAR DYNAMICS
Bifurcations and stability of internal solitary waves
D. S. Agafontseva, F. Diasb, E. A. Kuznetsova a L. D. Landau Institute for Theoretical Physics
b Centre de Mathématiques et de Leurs Applications,
École normale supérieure de Cachan, 94235 Cachan cedex, France
Abstract:
We study both supercritical and subcritical bifurcations of internal solitary waves propagating along the interface between two deep ideal fluids. We derive a generalized nonlinear Schrödinger equation to describe solitons near the critical density ratio corresponding to transition from subcritical to supercritical bifurcation. This equation takes into account gradient terms for the four-wave interactions (the so-called Lifshitz term and a nonlocal term analogous to that first found by Dysthe for pure gravity waves) as well as the six-wave nonlinear interaction term. Within this model we find two branches of solitons and analyze their Lyapunov stability.
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Received: 02.02.2006
Citation:
D. S. Agafontsev, F. Dias, E. A. Kuznetsov, “Bifurcations and stability of internal solitary waves”, Pis'ma v Zh. Èksper. Teoret. Fiz., 83:5 (2006), 241–245; JETP Letters, 83:5 (2006), 201–205
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https://www.mathnet.ru/eng/jetpl1257 https://www.mathnet.ru/eng/jetpl/v83/i5/p241
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Abstract page: | 281 | Full-text PDF : | 81 | References: | 63 |
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