On the “Einstein–Gauss–Bonnet gravity in four dimension”

Abstract To ensure the existence of a well defined linearized gravitational wave equation, we show that the spacetimes in the so-called “Einstein–Gauss–Bonnet gravity in four dimension” have to be locally conformally flat.

Bibliographic Details
Main Authors: Li-Ming Cao, Liang-Bi Wu
Format: Article
Language:English
Published: SpringerOpen 2022-02-01
Series:European Physical Journal C: Particles and Fields
Online Access:https://doi.org/10.1140/epjc/s10052-022-10079-5