Korteweg-de Vries description of Helmholtz-Kerr dark solitons

Christian, JM ORCID: https://orcid.org/0000-0003-2742-0569, McDonald, GS ORCID: https://orcid.org/0000-0002-1304-5182 and Chamorro-Posada, P 2006, 'Korteweg-de Vries description of Helmholtz-Kerr dark solitons' , Journal of Physics A: Mathematical and General, 39 (50) , pp. 15355-15363.

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Abstract

A wide variety of different physical systems can be described by a relatively small set of universal equations. For example, small-amplitude nonlinear Schrödinger dark solitons can be described by a Korteweg-de Vries (KdV) equation. Reductive perturbation theory, based on linear boosts and Gallilean transformations, is often employed to establish connections to and between such universal equations. Here, a novel analytical approach reveals that the evolution of small-amplitude Helmholtz–Kerr dark solitons is also governed by a KdV equation. This broadens the class of nonlinear systems that are known to possess KdV soliton solutions, and provides a framework for perturbative analyses when propagation angles are not negligibly small. The derivation of this KdV equation involves an element that appears new to weakly nonlinear analyses, since transformations are required to preserve the rotational symmetry inherent to Helmholtz-type equations.

Item Type:	Article
Themes:	Subjects / Themes > Q Science > QC Physics Subjects outside of the University Themes
Schools:	Schools > School of Computing, Science and Engineering Schools > School of Computing, Science and Engineering > Salford Innovation Research Centre
Journal or Publication Title:	Journal of Physics A: Mathematical and General
Publisher:	Institute of Physics
Refereed:	Yes
ISSN:	03054470
Depositing User:	H Kenna
Date Deposited:	22 Aug 2007 11:42
Last Modified:	15 Feb 2022 15:13
URI:	https://usir.salford.ac.uk/id/eprint/299

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