Oslo-TP-5-94, gr-qc/9404058 Aspects of the Thermo-Dynamics of a Black Hole with a Topological Defect
نویسنده
چکیده
Aspects of the thermo-dynamics of a black hole which is either pierced by a cosmic gauge string or contains a global monopole are investigated. We also make some comments on the physical significance of the fact that the gravitational mass carried by a global monopole is negative. We note in particular that the negative monopole mass implies a gravitational super-radiance effect. PACS numbers: 04.20.Cv , 04.30.+x Typeset using REVTEX ∗Electronic address: [email protected] 1
منابع مشابه
Oslo-TP-4-94, USITP-94-5 gr-qc/9403060 Scattering of Fermions off Dilaton Black Holes
We discuss how various properties of dilaton black holes depend on the dilaton coupling constant a. In particular we investigate the a-dependence of certain mass parameters both outside and in the extremal limit and discuss their relation to thermodynamical quantities. To further illuminate the role of the coupling constant a we look at a massless point particle in a dilaton black hole geometry...
متن کاملObservables for two-dimensional black holes.
We consider the most general dilaton gravity theory in 1+1 dimensions. By suitably parametrizing the metric and scalar eld we nd a simple expression that relates the energy of a generic solution to the magnitude of the corresponding Killing vector. In theories that admit black hole solutions, this relationship leads directly to an expression for the entropy S = 2 0=G, where 0 is the value of th...
متن کاملRri{96{14; Gr-qc/9606020 Black Hole Area in Brans-dicke Theory
We have shown that the dynamics of the scalar eld (x) = \G ?1 (x)" in Brans-Dicke theories of gravity makes the surface area of the black hole horizon oscillatory during its dynamical evolution. It explicitly explains why the area theorem does not hold in Brans-Dicke theory. However, we show that there exists a certain non-decreasing quantity deened on the event horizon which is proportional to...
متن کاملAbsence of Static, Spherically Symmetric Black Hole Solutions for Einstein-Dirac-Yang/Mills Equations with Complete Fermion Shells
We study a static, spherically symmetric system of (2j + 1) massive Dirac particles, each having angular momentum j, j = 1, 2, . . . , in a classical gravitational and SU(2) Yang-Mills field. We show that for any black hole solution of the associated Einstein-Dirac-Yang/Mills equations, the spinors must vanish identically outside of the event horizon. e-print archive: http://xxx.lanl.gov/gr-qc/...
متن کاملTHU-96/26 gr-qc/9607022 THE SCATTERING MATRIX APPROACH FOR THE QUANTUM BLACK HOLE an overview
If one assumes the validity of conventional quantum eld theory in the vicinity of the horizon of a black hole, one does not nd a quantummechanical description of the entire black hole that even remotely resembles that of conventional forms of matter; in contrast with matter made out of ordinary particles one nds that, even if embedded in a nite volume, a black hole would be predicted to have a ...
متن کامل