Evaporation of regular black holes in 2D dilaton gravity
General Relativity and Quantum Cosmology
2025-03-06 v1
Abstract
We present a general class of non-singular black holes in semi-classical, two-dimensional dilaton gravity, with a focus on a Bardeen-like model. The equations of motion for an evaporating black hole including backreaction are solved numerically. The apparent horizons evaporate smoothly in finite time to form a compact trapped region. Backreaction effects lead to the formation of additional trapped and anti-trapped regions after the primary black hole becomes un-trapped. Numerical simulations of microscopic black holes yield a final spacetime that is free of apparent horizons and Cauchy horizons. This would imply that the evaporation of regular black holes is a unitary process.
Keywords
Cite
@article{arxiv.2503.03191,
title = {Evaporation of regular black holes in 2D dilaton gravity},
author = {Jonathan Barenboim and Andrei V. Frolov and Gabor Kunstatter},
journal= {arXiv preprint arXiv:2503.03191},
year = {2025}
}