On Higher Derivative Gravity in Two Dimensions

Details On Higher Derivative Gravity in Two Dimensions On Higher Derivative Gravity in Two Dimensions

1994-05-20

arxiv.org/abs/hep-th/9405132v1

Phys.Rev. D51 (1995) 591-602

Physics

High Energy Physics

High Energy Physics - Theory

24p., (5 figures, available upon request), JINR E2-94-185, Latex

Scientific paper

10.1103/PhysRevD.51.591

The 2D gravity described by the action which is an arbitrary function of the scalar curvature $f(R)$ is considered. The classical vacuum solutions are analyzed. The one-loop renormalizability is studied. For the function $f=R \ln R$ the model coupled with scalar (conformal) matter is exactly integrated and is shown to describe a black hole of the 2D dilaton gravity type. The influence of one-loop quantum corrections on a classical black hole configuration is studied by including the Liouville-Polyakov term. The resulting model turns out to be exactly solvable. The general solution is analyzed and shown to be free from the space-time singularities for a certain number of scalar fields.

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