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Generic simplicity of resonances in obstacle scattering

Research output: Contribution to journalArticlepeer-review

Abstract

We show that all resonances in Dirichlet obstacle scattering (in ℂ in odd dimensions and in the logarithmic cover of ℂ \ {0} in even dimensions) are generically simple in the class of obstacles with Ck (and C) boundaries, k ≥ 2. The method also yields a Hadamard type variational formula for a simple resonance.

Original languageEnglish
Pages (from-to)4301-4319
Number of pages19
JournalTransactions of the American Mathematical Society
Volume376
Issue number6
Early online date21 Mar 2023
DOIs
Publication statusPublished - Jun 2023

Bibliographical note

Publisher Copyright:
© 2023 American Mathematical Society.

ASJC Scopus subject areas

  • General Mathematics
  • Applied Mathematics

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