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Closed Trapped Surfaces in Cosmology

George F R Ellis
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Abstract

The existence of closed trapped surfaces need not imply a cosmological singularity when the spatial hypersurfaces are compact. This is illustrated by a variety of examples, in particular de Sitter spacetime admits many closed trapped surfaces and obeys the null convergence condition but is non-singular in the k=+1 frame.

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George F R Ellis. 2003-04-09. Closed Trapped Surfaces in Cosmology. https://doi.org/10.1023/a%3A1024508831299

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