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Article Dans Une Revue Advances in Theoretical and Mathematical Physics Année : 2008

Causal properties of AdS-isometry groups I: Causal actions and limit sets

Résumé

We study the causality relation in the 3-dimensional anti-de Sitter space AdS and its conformal boundary Ein. To any closed achronal subset $\Lambda$ in $\mbox{Ein}_2$ we associate the invisible domain $E(\Lambda)$ from $\Lambda$ in AdS. We show that if $\Gamma$ is a torsion-free discrete group of isometries of AdS preserving $\Lambda$ and is non-elementary (for example, not abelian) then the action of $\Gamma$ on $E(\Lambda)$ is free, properly discontinuous and strongly causal. If $\Lambda$ is a topological circle then the quotient space $M_\Lambda(\Gamma) = \Gamma\backslash{E}(\Lambda)$ is a maximal globally hyperbolic AdS-spacetime admitting a Cauchy surface $S$ such that the induced metric on $S$ is complete. In a forthcoming paper we study the case where $\Gamma$ is elementary and use the results of the present paper to define a large family of AdS-spacetimes including all the previously known examples of BTZ multi-black holes.
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Dates et versions

hal-00009017 , version 1 (22-09-2005)
hal-00009017 , version 2 (07-02-2006)

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Thierry Barbot. Causal properties of AdS-isometry groups I: Causal actions and limit sets. Advances in Theoretical and Mathematical Physics, 2008, 12 (1), pp.1--66. ⟨hal-00009017v2⟩

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