Blow-up theorem for semilinear wave equations with non-zero initial position

Hiroyuki Takamura, Hiroshi Uesaka, Kyouhei Wakasa

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

One of the features of solutions of semilinear wave equations can be found in blow-up results for non-compactly supported data. In spite of finite propagation speed of the linear wave, we have no global in time solution for any power nonlinearity if the spatial decay of the initial data is weak. This was first observed by Asakura (1986) [2] finding out a critical decay to ensure the global existence of the solution. But the blow-up result is available only for zero initial position having positive speed.In this paper the blow-up theorem for non-zero initial position by Uesaka (2009) [22] is extended to higher-dimensional case. And the assumption on the nonlinear term is relaxed to include an example, |u|p-1u. Moreover the critical decay of the initial position is clarified by example.

Original languageEnglish
Pages (from-to)914-930
Number of pages17
JournalJournal of Differential Equations
Volume249
Issue number4
DOIs
Publication statusPublished - 2010 Aug
Externally publishedYes

Keywords

  • Blow-up
  • Primary
  • Secondary
  • Semilinear wave equations

ASJC Scopus subject areas

  • Analysis
  • Applied Mathematics

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