The Lorentz-Invariant Deformation of the Whitham System for the Nonlinear Klein--Gordon Equation

A. Ya. Maltsev

Funkcionalʹnyj analiz i ego priloženiâ, Tome 42 (2008) no. 2, pp. 28-43.

Résumé

We consider a deformation of the Whitham system for the nonlinear Klein–Gordon equation. This deformation has a Lorentz-invariant form. Using the Lagrangian formalism of the original system, we obtain the first nontrivial correction to the Whitham system in the Lorentz-invariant approach.

Détail

Keywords: asymptotic method, slow modulation.

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