The Black Holes of a General Two-Dimensional Dilaton Gravity Theory

Details The Black Holes of a General Two-Dimensional Dilaton Gravity Theory The Black Holes of a General Two-Dimensional Dilaton Gravity Theory

1993-11-05

arxiv.org/abs/gr-qc/9311008v1

erratum-ibib.d51.5967; Erratum-idib.D51:5967-5968,1995

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

27 pages (25 figures), LaTex, Lisbon preprint DF/IST-9.93 and Univ. of Algarve preprint UATP-93/05

Scientific paper

10.1103/PhysRevD.49.2897

A general dilaton gravity theory in 1+1 spacetime dimensions with a cosmological constant $\lambda$ and a new dimensionless parameter $\omega$, contains as special cases the constant curvature theory of Teitelboim and Jackiw, the theory equivalent to vacuum planar General Relativity, the first order string theory, and a two-dimensional purely geometrical theory. The equations of this general two-dimensional theory admit several different black holes with various types of singularities. The singularities can be spacelike, timelike or null, and there are even cases without singularities. Evaluation of the ADM mass, as a charge density integral, is possible in some situations, by carefully subtrating the black hole solution from the corresponding linear dilaton at infinity.

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