Topological phantom AdS black holes in F(R) gravity

Black holes in three-dimensional topological gravity.

Topological Black Holes in Weyl Conformal Gravity

We present a class of exact solutions of Weyl conformal gravity, which have an interpretation as topological black holes. Solutions with negative, zero or positive scalar curvature at infinity are found, the former generalizing the wellknown topological black holes in anti-de Sitter gravity. The rather delicate question of thermodynamic properties of such objects in Weyl conformal gravity is di...

Microscopic entropy of black holes and AdS 2 quantum gravity ∗

Quantum gravity (QG) on two-dimensional anti-de Sitter spacetime (AdS2) takes always the form of a chiral conformal field theory (CFT). However, the actual content of the CFT, and in particular its central charge, depends on the background values of the dilaton and Maxwell field. We review the main features of AdS2 QG with linear dilaton and of AdS2 QG with constant dilaton and Maxwell field. W...

Quantum compositeness of gravity: black holes, AdS and inflation

Gravitational backgrounds, such as black holes, AdS, de Sitter and inflationary universes, should be viewed as composite of N soft constituent gravitons. It then follows that such systems are close to quantum criticality of graviton Bose-gas to Bose-liquid transition. Generic properties of the ordinary metric description, including geodesic motion or particlecreation in the background metric, e...

The Cardy-Verlinde Formula and Topological AdS-Schwarzschild Black Holes

We consider the brane universe in the background of the topological AdS-Schwarzschild black holes. The induced geometry of the brane is that of a flat or an open radiation dominated FRW-universe. Just like the case of a closed radiation dominated FRWuniverse, the temperature and entropy are simply expressed in terms of the Hubble parameter and its time derivative when the brane crosses the blac...