• Media type: E-Article
  • Title: On averaged exponential integrators for semilinear wave equations with solutions of low-regularity
  • Contributor: Buchholz, Simone; Dörich, Benjamin; Hochbruck, Marlis
  • imprint: Springer Science and Business Media LLC, 2021
  • Published in: Partial Differential Equations and Applications
  • Language: English
  • DOI: 10.1007/s42985-020-00045-9
  • ISSN: 2662-2963; 2662-2971
  • Origination:
  • Footnote:
  • Description: <jats:title>Abstract</jats:title><jats:p>In this paper we introduce a class of second-order exponential schemes for the time integration of semilinear wave equations. They are constructed such that the established error bounds only depend on quantities obtained from a well-posedness result of a classical solution. To compensate missing regularity of the solution the proofs become considerably more involved compared to a standard error analysis. Key tools are appropriate filter functions as well as the integration-by-parts and summation-by-parts formulas. We include numerical examples to illustrate the advantage of the proposed methods.</jats:p>