Nonlinear Sciences – Exactly Solvable and Integrable Systems
Scientific paper
1997-03-10
Nonlinear Sciences
Exactly Solvable and Integrable Systems
RevTex file, submitted to Proc. Roy. Soc. London A
Scientific paper
10.1098/rspa.1998.0215
We study solitary-wave and kink-wave solutions of a modified Boussinesq equation through a multiple-time reductive perturbation method. We use appropriated modified Korteweg-de Vries hierarchies to eliminate secular producing terms in each order of the perturbative scheme. We show that the multiple-time variables needed to obtain a regular perturbative series are completely determined by the associated linear theory in the case of a solitary-wave solution, but requires the knowledge of each order of the perturbative series in the case of a kink-wave solution. These appropriate multiple-time variables allow us to show that the solitary-wave as well as the kink-wave solutions of the modified Botussinesq equation are actually respectively a solitary-wave and a kink-wave satisfying all the equations of suitable modified Korteweg-de Vries hierarchies.
Manna M. A.
Merle V.
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