Discrete Group Actions on Spacetimes: Causality Conditions and the Causal Boundary
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چکیده
Suppose a spacetime M is a quotient of a spacetime V by a discrete group of isometries. It is shown how causality conditions in the two spacetimes are related, and how can one learn about the future causal boundary on M by studying structures in V . The relations between the two are particularly simple (the boundary of the quotient is the quotient of the boundary) if both V and M have spacelike future boundaries and if it is known that the quotient of the future completion of V is past-distinguishing. (That last assumption is automatic in the case of M being
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تاریخ انتشار 2008