On the one-dimensional cubic nonlinear Schrodinger equation below L^2

Details On the one-dimensional cubic nonlinear Schrodinger equation below L^2 On the one-dimensional cubic nonlinear Schrodinger equation below L^2

2010-07-13

arxiv.org/abs/1007.2073v2

Mathematics

Analysis of PDEs

14 pages, additional references

Scientific paper

In this paper, we review several recent results concerning well-posedness of the one-dimensional, cubic Nonlinear Schrodinger equation (NLS) on the real line R and on the circle T for solutions below the L^2-threshold. We point out common results for NLS on R and the so-called "Wick ordered NLS" (WNLS) on T, suggesting that WNLS may be an appropriate model for the study of solutions below L^2(T). In particular, in contrast with a recent result of Molinet who proved that the solution map for the periodic cubic NLS equation is not weakly continuous from L^2(T) to the space of distributions, we show that this is not the case for WNLS.

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