Year: 2025
Type: article
Abstract: We present a general class of nonsingular black holes in semiclassical, 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 antitrapped regions after the primary black hole evaporates. Numerical simulations of microscopic black holes yield a final spacetime that is free of apparent horizons and Cauchy horizons, suggesting that the evaporation of regular 2D black holes is a unitary process.
Authors: Jonathan Barenboim, Andrei V. Frolov, Gabor Kunstatter
Institutions: Simon Fraser University, The University of Winnipeg
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Awards: G7310716008, G8412526249
OpenAlex ID: W4410612434