Dispersive Decay Bound of Small Data Solutions to Kawahara Equation in a Finite Time Scale

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Publication date: 6 October 2022

Abstract: In this article, we prove that small localized data yield solutions to Kawahara type equation which have linear dispersive decay on a finite time. We use the similar method used to derive the dispersive decay bound of the solutions to the KdV equation, with some steps being simpler. This result is expected to be the first result of the small data global bounds of the fifth-order dispersive equations with quadratic nonlinearity.

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