Kerr-Schild–Kundt metrics are universal

Gürses M.Şişman, T. Ç.Tekin, B.2018-04-122018-04-1220170264-9381http://hdl.handle.net/11693/37174We 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. © 2017 IOP Publishing Ltd.EnglishAdS wavesGeneric gravity theoriesKerr-SchildKundt classUniversal metricsKerr-Schild–Kundt metrics are universalArticle10.1088/1361-6382/aa60f11361-6382