A Nonsingular Two Dimensional Black Hole

TL;DR

This paper introduces a 2D gravity model that smoothly transitions from Schwarzschild-like behavior at large distances to de Sitter space inside the horizon, avoiding singularities.

Contribution

It presents a novel 2D gravity model based on the Limiting Curvature Construction that produces nonsingular black hole solutions.

Findings

Solutions approach Schwarzschild metric at large r

Inside the horizon, solutions resemble de Sitter space

Model avoids singularities in 2D black holes

Abstract

We construct a model of gravity in 1+1 spacetime dimensions in which the solutions approach the Schwarzschild metric at large $r$ and de Sitter space far inside the horizon. Our model may be viewed as a two dimensional application of the `Limiting Curvature Construction' recently proposed by two of the authors.