de Sitter versus anti-de Sitter in Horndeski-like gravity

Abstract

We present general solutions of Horndeski-like gravity that can interpolate between the de Sitter and anti-de Sitter regimes. In particular, we develop the first-order formalism with two scalar fields, and considering a black hole ansatz with flat slicing we investigate three different cases, namely exponential, vacuum, and smooth superpotential solutions, with no Minkowski extrema. Furthermore, with these solutions we show that a Renormalization Group flow is established, and we obtain a turnaround in the warp factor, where the transition is bounded by the area low. We discuss the ideal regimes to trap gravity, which are constructed using the holographic function, which provides stable and unstable regimes to localize gravity. Finally, we show that no ghost appear and that the matter sector that violates the $c$-theorem is physical.

arXiv comment32 pages, 15 figures

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