Interior design of a two-dimensional semiclassical black hole: Quantum transition across the singularity

Abstract

We study the internal structure of a two-dimensional dilatonic evaporating black hole, based on the CGHS model. At the semiclassical level, a (weak) spacelike singularity was previously found to develop inside the black hole. We employ here a simplified quantum formulation of spacetime dynamics in the neighborhood of this singularity, using a minisuperspace-like approach. Quantum evolution is found to be regular and well-defined at the semiclassical singularity. A well-localized initial wave-packet propagating towards the singularity bounces off the latter and retains its well-localized form. Our simplified quantum treatment thus suggests that spacetime may extend semiclassically beyond the singularity, and also signifies the specific extension.

Accepted to Phys. Rev. D

References in corpus (5)

• Quantum Nature of the Big Bang
• Loop quantum cosmology of k=1 FRW models
• Loop Quantum Cosmology: An Overview
• Anti-deSitter universe dynamics in LQC
• Interior design of a two-dimensional semiclassic black hole

Cited by in corpus (5)

• Black Hole evaporation: A Perspective from Loop Quantum Gravity
• Evaporation of 2-Dimensional Black Holes
• Approximate solution to the CGHS field equations for two-dimensional evaporating black holes
• Black Hole Evaporation in Loop Quantum Gravity
• Quantum Mechanics of the Interior of Radiating 2-D Black Holes