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

Understand

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.