A Non Degenerate Semi-Classical Lagrangian for Dilaton-Gravity in Two Dimensions

Details A Non Degenerate Semi-Classical Lagrangian for Dilaton-Gravity in Two Dimensions A Non Degenerate Semi-Classical Lagrangian for Dilaton-Gravity in Two Dimensions

1992-05-15

arxiv.org/abs/hep-th/9205053v1

Mod.Phys.Lett.A7:3071-3080,1992

Physics

High Energy Physics

High Energy Physics - Theory

12 pages

Scientific paper

10.1142/S0217732392002469

An action for two dimensional gravity conformally coupled to two dilaton-type fields is analysed. Classically, the theory has some exact solutions. These include configurations representing black holes. A semi-classical theory is obtained by assuming that these singular solutions are caused by the collapse of some matter fields. The semi-classical equations of motion reveal then that any generic solution must have a flat geometry.

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