3 papers
gr-qc2022
Initial data on big bang singularities in symmetric settings
Hans Ringström
In a recent article, we propose a general geometric notion of initial data on big bang singularities. This notion is of interest in its own right. However, it also serves the purpo…
gr-qc2021
Wave equations on silent big bang backgrounds
Hans Ringström
This article is the first of two in which we develop a geometric framework for analysing silent and anisotropic big bang singularities. The results of the present article concern t…
gr-qc2003
Future asymptotic expansions of Bianchi VIII vacuum metrics
Hans Ringstrom
Bianchi VIII vacuum solutions to Einstein's equations are causally geodesically complete to the future, given an appropriate time orientation, and the objective of this article is…