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Type II Blow Up Solutions with Optimal Stability Properties for the Critical Focussing Nonlinear Wave Equation on $\mathbb {R}^{3+1}$

About this Title

Stefano Burzio and Joachim Krieger

Publication: Memoirs of the American Mathematical Society
Publication Year: 2022; Volume 278, Number 1369
ISBNs: 978-1-4704-5346-6 (print); 978-1-4704-7169-9 (online)
DOI: https://doi.org/10.1090/memo/1369
Published electronically: May 23, 2022
Keywords: critical wave equation, blowup

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Table of Contents

Chapters

  • 1. Introduction
  • 2. The main theorem and outline of the proof
  • 3. Construction of a two parameter family of approximate blow up solutions
  • 4. Modulation theory; determination of the parameters $\gamma _{1,2}$.
  • 5. Iterative construction of blow up solution almost matching the perturbed initial data
  • 6. Proof of Theorem
  • 7. Outlook

Abstract

We show that the finite time type II blow up solutions for the energy critical nonlinear wave equation \[ \Box u = -u^5 \] on $\mathbb {R}^{3+1}$ constructed in Krieger, Schlag, and Tartaru (“Slow blow-up solutions for the $H^1(\mathbb {R}^3)$ critical focusing semilinear wave equation”, 2009) and Krieger and Schlag (“Full range of blow up exponents for the quintic wave equation in three dimensions”, 2014) are stable along a co-dimension one Lipschitz manifold of data perturbations in a suitable topology, provided the scaling parameter $\lambda (t) = t^{-1-\nu }$ is sufficiently close to the self-similar rate, i. e., $\nu >0$ is sufficiently small. This result is qualitatively optimal in light of the result of Krieger, Nakamishi, and Schlag (“Center-stable manifold of the ground state in the energy space for the critical wave equation”, 2015). The paper builds on the analysis of Krieger and Wong (“On type I blow-up formation for the critical NLW”, 2014).

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