Talk detail

Participant	Stoica, Ovidiu Cristinel
Institution	Horia Hulubei National Institute for Physics and Nuclear Engineering - Strada Reactorului 30 - Bucharest - Magurele - Romania

Session	ES2	Accepted		Order	Time
Talk	Oral abstract	Title	The causal structure of spacetime singularities
Coauthors
Abstract	We analyze the causal structure of some big-bang and black hole singularities. We find that the topology of the lightcones remains intact, despite the fact that the metric is singular. The topology of the lightcones allows spacelike foliations of the singularities, which are therefore compatible with global hyperbolicity and causality. The fact that the lightcones at different events have the same topology no matter whether the events are at or outside the singularities suggests that the causal structure is more universal and fundamental than the metric, which is very different at the singularities.
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