2 papers
gr-qc2025
Topological Big Bangs: Reflection, Itty-Bitty Blenders, and Eternal Trumpets
Hubert Bray, James Wheeler
We discuss and formalize topological means by which the initial singularity might be mollified, at the level of the spacetime manifold's structure, in classical cosmological models…
gr-qc2025
Brill Waves with Slow Fall-Off Towards Spatial Infinity
Lydia Bieri, David Garfinkle, James Wheeler
We compute families of solutions to the Einstein vacuum equations of the type of Brill waves, but with slow fall-off towards spatial infinity. We prove existence and uniqueness of…