High-frequency averaging in the semi-classical singular Hartree equation

Article type: Research Article

Authors: Mouzaoui, Lounès

Affiliations: Université Montpellier 2, Mathématiques, UMR 5149, CC 051, 34095 Montpellier, France. E-mail: lounes.mouzaoui@univ-montp2.fr

Abstract: We study the asymptotic behavior of the Schrödinger equation in the presence of a nonlinearity of Hartree type in the semi-classical regime. Our scaling corresponds to a weakly nonlinear regime where the nonlinearity affects the leading order amplitude of the solution without altering the rapid oscillations. We show the validity of the WKB-analysis when the potential in the nonlinearity is singular around the origin. No new resonant wave is created in our model, this phenomenon is inhibited due to the nonlinearity. The nonlocal nature of this latter leads us to build our result on a high-frequency averaging effects. In the proof we make use of the Wiener algebra and the space of square-integrable functions.

Keywords: Schrödinger equation, Hartree nonlinearity, semi-classical regime, WKB-method, Wiener algebra

DOI: 10.3233/ASY-131175

Journal: Asymptotic Analysis, vol. 84, no. 3-4, pp. 229-245, 2013