Mass-Inflation in Dynamical Gravitational Collapse of a Charged Scalar-Field

TL;DR

This paper investigates the internal structure of charged black holes formed from collapsing charged scalar fields, revealing a mass-inflation singularity along the Cauchy horizon and a strong singularity at the center.

Contribution

It provides a detailed numerical analysis of the dynamical formation and internal structure of charged black holes, highlighting the mass-inflation phenomenon.

Findings

Identification of a null, weak mass-inflation singularity along the Cauchy horizon

Discovery of a strong, spacelike singularity at the central $r=0$ hypersurface

Confirmation of the inner-structure evolution during gravitational collapse

Abstract

We study the inner-structure of a charged black-hole which is formed from the gravitational collapse of a self-gravitating charged scalar-field. Starting with a regular spacetime, we follow the evolution through the formation of an apparent horizon, a Cauchy horizon and a final central singularity. We find a null, weak, mass-inflation singularity along the Cauchy horizon, which is a precursor of a strong, spacelike singularity along the $r=0$ hypersurface.