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Paper detail

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

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.

preprint1992arXivOpen access
Noureddine Mohammedi
hep-th
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Noureddine Mohammedi

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