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20172026
most citedUniqueness and non-uniqueness results for spacetime extensions

7 citations · 9 across the 8 of their papers we have counts for

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13 papers · 1 filter

gr-qc2026

Spherically symmetric inextendibility of weak null singularities with Christoffel symbols in

Peter Cameron, Jan Sbierski

Motivated by the strong cosmic censorship conjecture in general relativity, we prove the inextendibility of spherically symmetric weak null singularities as spherically symmetric L…

gr-qc2026

A note on the instability of the Kerr Cauchy horizon under linearised gravitational perturbations

Jan Sbierski

This note slightly strengthens the result of arXiv:2201.12295 on the linear instability of the Kerr Cauchy horizon. This strengthened result is used in the proof arXiv:2604.04877 o…

gr-qc2026

The formation of a weak null singularity in the interior of generic rotating black holes

Jonathan Luk, Jan Sbierski

Given a characteristic initial value problem with smooth data representing a dynamical event horizon settling down to that of Kerr in the subextremal, strictly rotating range with…

gr-qc2025

On the uniqueness of continuous spacetime extensions in 1+1 dimensions with applications to weak null singularities

Peter Cameron, Jan Sbierski

Motivated by weak null singularities in black hole interiors, we study 1+1 dimensional Lorentzian manifolds which admit a continuous spacetime extension across a null bound…

gr-qc2024

Lipschitz inextendibility of weak null singularities from curvature blow-up

Jan Sbierski

We prove the -inextendibility of weak null singularities without any symmetry assumptions. The proof introduces a new strategy to infer $C^{0,1}_{\mathrm{lo…

gr-qc2023

The -inextendibility of a class of FLRW spacetimes

Jan Sbierski

This paper studies the singularity structure of FLRW spacetimes without particle horizons at the -level of the metric. We show that in the case of constant spatial curvature $…