Interior design of a two-dimensional semiclassic black hole

TL;DR

This paper investigates the internal structure of a two-dimensional evaporating black hole using the homogenous approximation, revealing the development of a spacelike singularity inside the black hole.

Contribution

It introduces a homogenous approximation method to analyze the internal structure and singularities of two-dimensional evaporating black holes.

Findings

Identification of two types of singularities within the black hole.

Discovery of a spacelike singularity forming inside the black hole.

Detailed analysis of the asymptotic structure near singularities.

Abstract

We look into the inner structure of a two-dimensional dilatonic evaporating black hole. We establish and employ the homogenous approximation for the black-hole interior. The field equations admit two types of singularities, and their local asymptotic structure is investigated. One of these singularities is found to develop, as a spacelike singularity, inside the black hole. We then study the internal structure of the evaporating black hole from the horizon to the singularity.