Abstract We attempt to clarify several aspects concerning the recently presented four-dimensional Einstein-Gauss-Bonnet gravity. argue that limiting procedure outlined in [Phys. Rev. Lett. 124, 081301 (2020)] generally involves ill-defined terms four dimensional field equations. Potential ways circumvent this issue are discussed, alongside remarks regarding specific solutions of theory. prove t...

Abstract We generalise the continual gravitational collapse of a spherically symmetric radiation shell matter in five dimensional Einstein–Gauss–Bonnet gravity to include electromagnetic field. The presence charge has significant effect dynamics. note that there exists maximal contribution for which metric functions remain real, is not case general relativity. Beyond this spacetime complex. fin...

Abstract We study the bending of light in space-time black holes four-dimensional Einstein-Gauss-Bonnet theory gravity, recently proposed by Glavan and Lin Phys. Rev. Lett. , 124 (2020) 081301. Using Rindler-Ishak method, effect Gauss-Bonnet coupling on angle is studied. show that a positive gives negative contribution to Schwarzschild-de Sitter deflection angle, as one would expect.

We have studied spacetime structures of static solutions in the n-dimensional Einstein-GaussBonnet-Maxwell-Λ system. Especially we focus on effects of the Maxwell charge. We assume that the Gauss-Bonnet coefficient α is non-negative and 4α̃/l ≤ 1 in order to define the relevant vacuum state. Solutions have the (n− 2)-dimensional Euclidean sub-manifold whose curvature is k = 1, 0, or −1. In Gauss...

Abstract Recently, an action principle for the limit of Einstein-Gauss-Bonnet gravity has been proposed. It is a special scalar-tensor theory that belongs to family Horndeski gravity. also well defined $D\rightarrow3$?> and $D\rightarrow2$?> limits. In this work, we examine in three four dimensions Bondi-Sachs framework. both dimensions, find there no news function ass...

Some models within the framework of Gauss–Bonnet gravities are considered in presence a non-minimally coupled scalar field. By imposing particular constraint on field coupling, class these theories called Einstein–Gauss–Bonnet gravity keeps correct speed propagation for gravitational waves. The cosmological evolution this viable is studied and compared with observational data (BAO, CMB, Sne Ia,...

We discuss self-gravitating global O(3) monopole solutions associated with the spontaneous breaking of down to a O(2) in an extended Gauss-Bonnet theory gravity ($3+1$) dimensions, presence nontrivial scalar field $\mathrm{\ensuremath{\Phi}}$ that couples higher curvature combination coupling parameter $\ensuremath{\alpha}$. obtain range values for $\ensuremath{\alpha}<0$ (in our notation an...