(1) Department of Physics, Kyoto University, Kyoto 606-8502, Japan
Abstract:
We consider a Vaidya-type radiating spacetime in Einstein gravity with the Gauss-Bonnet combination of quadratic curvature
terms. Simply generalizing the known static black hole solutions in Einstein-Gauss-Bonnet gravity, we present an exact solution
in arbitrary dimensions with the energy-momentum tensor given by a null fluid form. As an application, we derive an evolution
equation for the “dark radiation” in the Gauss-Bonnet braneworld.