The cubic nonlinear Schrödinger equation in two dimensions with radial data

Abstract

We establish global well-posedness and scattering for solutions to the mass-critical nonlinear Schrödinger equation $i{u}_t+\Delta u=\pm |u{|}^{2}u$ for large spherically symmetric L^2_x(\R^2) initial data; in the focusing case we require, of course, that the mass is strictly less than that of the ground state. As a consequence, we deduce that in the focusing case, any spherically symmetric blowup solution must concentrate at least the mass of the ground state at the blowup time. We also establish some partial results towards the analogous claims in other dimensions and without the assumption of spherical symmetry.

49 pages, no figures, submitted, Annals of Math. Various corrections

References in corpus (3)

• Time decay for the bounded mean oscillation of solutions of the Schrödinger and wave equations
• Spherically averaged endpoint Strichartz estimates for the two-dimensional Schrödinger equation
• Minimal-mass blowup solutions of the mass-critical NLS

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