Black Holes with Scalar Hairs in Einstein-Gauss-Bonnet Gravity

Understand

The Einstein-Gauss-Bonnet gravity in five dimensions is extended by scalar fields and the corresponding equations are reduced to a system of non-linear differential equations.

• A large family of regular solutions of these equations is shown to exist.
• Generically, these solutions are spinning black holes with scalar hairs.
• They can be characterized (but not uniquely) by an horizon and an angular velocity on this horizon.