Black holes in three-dimensional dilaton gravity theories

Authors: S P.M.1; Kleber A.2; Lemos J.P.S.2

Source: Classical and Quantum Gravity, Volume 13, Number 1, 1996 , pp. 125-137(13)

Publisher: Institute of Physics Publishing

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Abstract:

Three-dimensional black-hole solutions of a generalized dilaton gravity theory are analysed. The theory is specified by two fields, the dilaton and the graviton , and two parameters, the cosmological constant and the Brans - Dicke parameter . It contains seven different cases, of which one distinguishes as special cases, string theory, general relativity and a theory equivalent to four-dimensional general relativity with one Killing vector. We study the causal structure and geodesic motion of null and timelike particles in the black-hole geometries and find the ADM masses of the different solutions.

Language: English

Document Type: Miscellaneous

Affiliations: 1: Sector de F?sica, Unidade de Ci?ncias Exactas e Humanas, Universidade do Algarve, Campus de Gambelas, 8000 Faro, Portugal 2: Departamento de Astrof?sica, Observat?rio Nacional-CNPq, Rua General Jos? Cristino 77, 20921 Rio de Janeiro, Brazil

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