Pp-waves as exact solutions to ghost-free infinite derivative gravity

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KILIÇARSLAN E.

Physical Review D, vol.99, no.12, 2019 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 99 Issue: 12
  • Publication Date: 2019
  • Doi Number: 10.1103/physrevd.99.124048
  • Journal Name: Physical Review D
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Uşak University Affiliated: Yes

Abstract

We construct exact pp-wave solutions of ghost-free infinite derivative gravity. These waves described in the Kerr-Schild form also solve the linearized field equations of the theory. We also find an exact gravitational shock wave with nonsingular curvature invariants and with a finite limit in the ultraviolet regime of nonlocality which is in contrast to the divergent limit in Einstein's theory.