The cubic nonlinear Schrödinger equation in two dimensions with radial data

Details The cubic nonlinear Schrödinger equation in two dimensions with radial data The cubic nonlinear Schrödinger equation in two dimensions with radial data

2007-07-21

arxiv.org/abs/0707.3188v2

Mathematics

Analysis of PDEs

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

Scientific paper

We establish global well-posedness and scattering for solutions to the mass-critical nonlinear Schr\"odinger equation $iu_t + \Delta u = \pm |u|^2 u$ 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.

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