Global well-posedness of the cubic nonlinear Schrödinger equation on compact manifolds without boundary

Details Global well-posedness of the cubic nonlinear Schrödinger equation on compact manifolds without boundary Global well-posedness of the cubic nonlinear Schrödinger equation on compact manifolds without boundary

2010-08-17

arxiv.org/abs/1008.2826v2

Mathematics

Analysis of PDEs

47 pages. Final version: to appear in CPDE

Scientific paper

We consider the cubic non-linear Schr\"odinger equation on general closed (compact without boundary) Riemannian surfaces. The problem is known to be locally well-posed in $H^s(M)$ for $s>1/2$. Global well-posedness for $s\geq 1$ follows easily from conservation of energy and standard arguments. In this work, we extend the range of global well-posedness to $s>2/3$. This generalizes, without any loss in regularity, a similar result on $\T^2$. The proof relies on the I-method of Colliander, Keel, Staffilani, Takaoka, and Tao, a semi-classical bilinear Strichartz estimate proved by the author, and spectral localization estimates for products of eigenfunctions, which is essential to develop multilinear spectral analysis on general compact manifolds.

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