FTUAM 95/33 Thermodynamic Features of Black Holes Dressed with Quantum Fields

Energy, Temperature, and Entropy of Black Holes Dressed with Quantum Fields *

Quantum Entropy of Charged Rotating Black Holes

For more than two decades physicists have come to appreciate black holes as thermodynamic systems characterized by only a few macroscopic parameters such as mass (m), charge (q) and angular momentum (Ω). The generic representative of such a hole in general relativity is the Kerr-Newman metric . The thermodynamic analogy suggests that there is an entropy associated with this hole that is proport...

Thermodynamic Geometry and Extremal Black Holes in String Theory

We study a generalisation of thermodynamic geometry to degenerate quantum ground states at zero temperatures exemplified by charged extremal black holes in type II string theories. Several examples of extremal charged black holes with non degenerate thermodynamic geometries and finite but non zero state space scalar curvatures are established. These include black holes described by D1-D5-P and ...

Free energy and entropy for semiclassical black holes in the canonical ensemble.

We consider the thermodynamics of a black hole coupled to thermal radiation in a spatially finite (spherical) region. Thermodynamic state functions are derived in the canonical ensemble, defined by elements of radius ro and boundary temperature T (ro). Using recent solutions of the semi-classical back reaction problem, we compute the O(h̄) corrections to the mass of the black hole, thermal energ...

Black holes and D-branes

Black holes have an entropy proportional to the area of the horizon. The microscopic degrees of freedom that give rise to the entropy are not visible in the classical theory. String theory, a quantum theory of gravity, provides a microscopic quantum description of the thermodynamic properties of some extremal and near extremal charged black holes. The description uses properties of some string ...