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Mathematics > Analysis of PDEs

arXiv:1804.09268 (math)
[Submitted on 24 Apr 2018]

Title:Almost sure scattering for the radial energy critical nonlinear wave equation in three dimensions

Authors:Bjoern Bringmann
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Abstract:We study the Cauchy problem for the radial energy critical nonlinear wave equation in three dimensions. Our main result proves almost sure scattering for radial initial data below the energy space. In order to preserve the spherical symmetry of the initial data, we construct a radial randomization that is based on annular Fourier multipliers. We then use a refined radial Strichartz estimate to prove probabilistic Strichartz estimates for the random linear evolution. The main new ingredient in the analysis of the nonlinear evolution is an interaction flux estimate between the linear and nonlinear components of the solution. We then control the energy of the nonlinear component by a triple bootstrap argument involving the energy, the Morawetz term, and the interaction flux estimate.
Comments: 49 pages, 5 figures
Subjects: Analysis of PDEs (math.AP)
MSC classes: 35L05, 35L15, 35L71
Cite as: arXiv:1804.09268 [math.AP]
  (or arXiv:1804.09268v1 [math.AP] for this version)
  https://doi.org/10.48550/arXiv.1804.09268
Journal reference: Analysis & PDE 13 (2020) 1011-1050
Related DOI: https://doi.org/10.2140/apde.2020.13.1011

Submission history

From: Bjoern Bringmann [view email]
[v1] Tue, 24 Apr 2018 21:45:07 UTC (41 KB)
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