Kerr-Schild-Kundt metrics are universal

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GÜRSES M., Sisman T. C., TEKİN B.

CLASSICAL AND QUANTUM GRAVITY, vol.34, no.7, 2017 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 34 Issue: 7
  • Publication Date: 2017
  • Doi Number: 10.1088/1361-6382/aa60f1
  • Journal Name: CLASSICAL AND QUANTUM GRAVITY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Keywords: universal metrics, Kerr-Schild-Kundt class, AdS waves, generic gravity theories
  • Middle East Technical University Affiliated: Yes

Abstract

We define (non-Einsteinian) universal metrics as the metrics that solve the source-free covariant field equations of generic gravity theories. Here, extending the rather scarce family of universal metrics known in the literature, we show that the Kerr-Schild-Kundt class of metrics are universal. Besides being interesting on their own, these metrics can provide consistent backgrounds for quantum field theory at extremely high energies.