Year: 1994
Type: article
Abstract: A general dilaton gravity theory in 1+1 spacetime dimensions, with a cosmological constant $\ensuremath{\lambda}$ and a new dimensionless parameter $\ensuremath{\omega}$, 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 subtracting the black hole solution from the corresponding linear dilation at infinity.
Authors: José P. S. Lemos, Paulo M. Sá
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2011105482