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Article Dans Une Revue Inventiones Mathematicae Année : 2022

On blow up for the energy super critical defocusing nonlinear Schrödinger equations

Résumé

We consider the energy supercritical defocusing nonlinear Schrödinger equation $$\begin{aligned} i\partial _tu+\Delta u-u|u|^{p-1}=0 \end{aligned}$$ i ∂ t u + Δ u - u | u | p - 1 = 0 in dimension $$d\ge 5$$ d ≥ 5 . In a suitable range of energy supercritical parameters ( d , p ), we prove the existence of $${\mathcal {C}}^\infty $$ C ∞ well localized spherically symmetric initial data such that the corresponding unique strong solution blows up in finite time. Unlike other known blow up mechanisms, the singularity formation does not occur by concentration of a soliton or through a self similar solution, which are unknown in the defocusing case, but via a front mechanism . Blow up is achieved by compression for the associated hydrodynamical flow which in turn produces a highly oscillatory singularity. The front blow up profile is chosen among the countable family of $${\mathcal {C}}^\infty $$ C ∞ spherically symmetric self similar solutions to the compressible Euler equation whose existence and properties in a suitable range of parameters are established in the companion paper (Merle et al. in Preprint (2019)) under a non degeneracy condition which is checked numerically.
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Dates et versions

hal-03355328 , version 1 (27-09-2021)

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Frank Merle, Pierre Raphaël, Igor Rodnianski, Jeremie Szeftel. On blow up for the energy super critical defocusing nonlinear Schrödinger equations. Inventiones Mathematicae, 2022, 227 (1), pp.247-413. ⟨10.1007/s00222-021-01067-9⟩. ⟨hal-03355328⟩
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