The black hole quantum atmosphere
Abstract
Ever since the discovery of black hole evaporation, the region of origin of the radiated quanta has been a topic of debate. Recently it was argued by Giddings that the Hawking quanta originate from a region well outside the black hole horizon by calculating the effective radius of a radiating body via the Stefan--Boltzmann law. In this paper we try to further explore this issue and end up corroborating this claim, using both a heuristic argument and a detailed study of the stress energy tensor. We show that the Hawking quanta originate from what might be called a quantum atmosphere around the black hole with energy density and fluxes of particles peaked at about , running contrary to the popular belief that these originate from the ultra high energy excitations very close to the horizon. This long distance origin of Hawking radiation could have a profound impact on our understanding of the information and transplanckian problems.
Cite
@article{arxiv.1701.06161,
title = {The black hole quantum atmosphere},
author = {Ramit Dey and Stefano Liberati and Daniele Pranzetti},
journal= {arXiv preprint arXiv:1701.06161},
year = {2017}
}
Comments
11 pages, 5 figures, minor revision and inclusion of a qualitative analysis of how to extend our argument to higher dimensions to match the published version