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arXiv · 2503.19187

Ultra-massive spacetimes in 2+1 dimensions with positive {\Lambda}

Ingemar Bengtsson·José M M Senovilla
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Abstract

We show that ultra-massive spacetimes exist also in 2 + 1 dimensions with a positive cosmological constant {\Lambda} > 0. They can be created through the collapse of a spherical null dust shell. The exterior of the shell is then a Mess spacetime, that is to say a locally de Sitter spacetime that cannot be obtained as a quotient of de Sitter space.

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Ingemar Bengtsson, José M M Senovilla. 2025-03-24. Ultra-massive spacetimes in 2+1 dimensions with positive {\Lambda}. https://doi.org/10.1088/1361-6382%2Faddc2e

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