Hayward black hole in scalar-Einstein-Gauss-Bonnet gravity in four dimensions

TL;DR

This paper constructs a Hayward black hole solution within scalar-Einstein-Gauss-Bonnet gravity, suggesting stringy corrections could address the black hole information loss problem by avoiding singularities and ensuring ghost-free models.

Contribution

It introduces a ghost-free Hayward black hole model in scalar-Einstein-Gauss-Bonnet gravity, linking stringy corrections to potential solutions for information loss.

Findings

Hayward black hole constructed in scalar-Gauss-Bonnet gravity

Model is free of ghosts

Suggests stringy corrections may resolve information loss

Abstract

In the framework of scalar-Einstein-Gauss-Bonnet gravity, we construct the model which realizes the Hayward black hole and discuss the absence of ghosts in this model. Because Hayward black hole has two horizons but no curvature singularity, it may solve the problem of the information loss that might be generated by black holes. The Gauss-Bonnet term appears as a stringy correction, and therefore, our results might indicate that the stringy correction would solve the information loss problem.