Ultra-massive spacetimes in 2+1 dimensions with positive {\Lambda}
General Relativity and Quantum Cosmology
2025-06-24 v2 Mathematical Physics
math.MP
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.
Keywords
Cite
@article{arxiv.2503.19187,
title = {Ultra-massive spacetimes in 2+1 dimensions with positive {\Lambda}},
author = {Ingemar Bengtsson and José M M Senovilla},
journal= {arXiv preprint arXiv:2503.19187},
year = {2025}
}
Comments
16 pages, 5 figures. Minor corrections and improved discussion. Matches published version