Scattering for the $L^2$ supercritical point NLS
Abstract
We consider the 1D nonlinear Schr\"odinger equation with focusing point nonlinearity. "Point" means that the pure-power nonlinearity has an inhomogeneous potential and the potential is the delta function supported at the origin. This equation is used to model a Kerr-type medium with a narrow strip in the optic fibre. There are several mathematical studies on this equation and the local/global existence of solution, blow-up occurrence and blow-up profile have been investigated. In this paper we focus on the asymptotic behavior of the global solution, i.e, we show that the global solution scatters as t tends to minus/plus infinity in the supercritical case. The main argument we use is due to Kenig-Merle, but it is required to make use of an appropriate function space (not Strichartz space) according to the smoothing properties of the associated integral equation.
Keywords
Cite
@article{arxiv.1904.09066,
title = {Scattering for the $L^2$ supercritical point NLS},
author = {Riccardo Adami and Reika Fukuizumi and Justin Holmer},
journal= {arXiv preprint arXiv:1904.09066},
year = {2019}
}