Speaker
Description
We discuss exact and numerical black hole solutions obtained in the linear representation of the conformally invariant Weyl quadratic gravity. After adopting a static spherically symmetric geometry, the vacuum field equations for the gravitational, scalar, and Weyl fields can be reformulated in a dimensionless form, which can generally be solved numerically. We detect the formation of a black hole from the presence of a Killing horizon for the timelike Killing vector in the metric tensor components, indicating the existence of the singularity in the metric. An exact black hole model, corresponding to a Weyl vector having only a radial spacelike component, is also obtained. Constraints on the parameters of the exact black hole solution are obtained by using the Solar System tests. The thermodynamic properties of the Weyl geometric type black holes (horizon temperature, specific heat, entropy and evaporation time due to Hawking luminosity) are also analyzed in detail.
| Topic | Modified theories of gravity |
|---|