Mass inflation in (1+1)-dimensional Dilaton Gravity

TL;DR

This paper studies mass inflation in two-dimensional dilaton gravity, demonstrating that the mass function diverges similarly to four-dimensional cases across various black hole spacetimes.

Contribution

It provides the first detailed analysis of mass inflation phenomena in 2D dilaton gravity, including multi-horizon black holes.

Findings

Mass function diverges during inflation

Similar divergence behavior to 4D black holes

Applicable to multiple horizon spacetimes

Abstract

We investigate the phenomenon of mass inflation in two-dimensional dilaton theories of gravity. We consider two distinct black hole spacetimes and construct the mass-inflation solution for each. Our analysis is extended to include multi-horizon spacetimes. We find that the mass function diverges in a manner quantitatively similar to its four-dimensional counterpart.