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On the Cauchy problem of 3-D energy-critical Schrödinger equations with subcritical perturbations
Journal article   Open access   Peer reviewed

On the Cauchy problem of 3-D energy-critical Schrödinger equations with subcritical perturbations

Xiaoyi Zhang
Journal of Differential Equations, Vol.230(2), pp.422-445
2006
DOI: 10.1016/j.jde.2006.08.010
url
https://doi.org/10.1016/j.jde.2006.08.010View
Published (Version of record) Open Access

Abstract

We investigate the global well-posedness, scattering and blow up phenomena when the 3-D quintic nonlinear Schrödinger equation, which is energy-critical, is perturbed by a subcritical nonlinearity λ 1 | u | p u . We find when the quintic term is defocussing, then the solution is always global no matter what the sign of λ 1 is. Scattering will occur either when the perturbation is defocussing and 4 3 < p < 4 or when the mass of the solution is small enough and 4 3 ⩽ p < 4 . When the quintic term is focusing, we show the blow up for certain solutions.

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