Article Contents
Article Contents

# Global well-posedness of critical nonlinear Schrödinger equations below $L^2$

• The global well-posedness on the Cauchy problem of nonlinear Schrödinger equations (NLS) is studied for a class of critical nonlinearity below $L^2$ in small data setting. We consider Hartree type (HNLS) and inhomogeneous power type NLS (PNLS). Since the critical Sobolev index $s_c$ is negative, it is rather difficult to analyze the nonlinear term. To overcome the difficulty we combine weighted Strichartz estimates in polar coordinates with new Duhamel estimates involving angular regularity.
Mathematics Subject Classification: Primary: 35Q55; Secondary: 42B37.

 Citation:

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