Published January 1, 2017 | Version v1
Journal article Open

Kerr-Schild-Kundt metrics are universal

  • 1. Bilkent Univ, Dept Math, Fac Sci, TR-06800 Ankara, Turkey
  • 2. Univ Turkish Aeronaut Assoc, Dept Astronaut Engn, TR-06790 Ankara, Turkey
  • 3. Middle East Tech Univ, Dept Phys, TR-06800 Ankara, Turkey

Description

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.

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