Blowup and Scattering problems for the Nonlinear Schrödinger equations

Details Blowup and Scattering problems for the Nonlinear Schrödinger equations Blowup and Scattering problems for the Nonlinear Schrödinger equations

2010-06-08

arxiv.org/abs/1006.1485v4

Mathematics

Analysis of PDEs

Scientific paper

We consider $L^{2}$-supercritical and $H^{1}$-subcritical focusing nonlinear Schr\"odinger equations. We introduce a subset $PW$ of $H^{1}(\mathbb{R}^{d})$ for $d\ge 1$, and investigate behavior of the solutions with initial data in this set. For this end, we divide $PW$ into two disjoint components $PW_{+}$ and $PW_{-}$. Then, it turns out that any solution starting from a datum in $PW_{+}$ behaves asymptotically free, and solution starting from a datum in $PW_{-}$ blows up or grows up, from which we find that the ground state has two unstable directions. We also investigate some properties of generic global and blowup solutions.

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