Type: Article
Publication Date: 2012-02-01
Citations: 153
DOI: https://doi.org/10.1215/00127094-1507400
We consider the Cauchy problem for the 1-dimensional periodic cubic nonlinear Schrödinger (NLS) equation with initial data below L2. In particular, we exhibit nonlinear smoothing when the initial data are randomized. Then, we prove local well-posedness of the NLS equation almost surely for the initial data in the support of the canonical Gaussian measures on Hs(T) for each s>−13, and global well-posedness for each s>−112.