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Clarifications on black/white hole metastable relics as dark matter
Abstract
The idea that the evaporation of black holes could end around the Planck mass and lead to relics possibly accounting for dark matter is quite old. In this article we focus on new models where the relics are metastable, typically with a lifetime of order M5, where M is the initial mass of the black hole. We show that those relics would actually be quite luminous, radiating -- possibly as much as the stars -- in the optical or UV band. We explicitly construct a proposal for their direct detection.
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BibTeX
@misc{barrau2026clarifications,
title = {{Clarifications on black/white hole metastable relics as dark matter}},
author = {Aurélien Barrau and Margaux Gajocha and Killian Martineau and Martin Teuscher and Jamy-Jayme Thézier and Ruth Durrer},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.31226},
eprint = {2610.31226},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.31226},
}
RIS
TY - UNPB
TI - Clarifications on black/white hole metastable relics as dark matter
AU - Aurélien Barrau
AU - Margaux Gajocha
AU - Killian Martineau
AU - Martin Teuscher
AU - Jamy-Jayme Thézier
AU - Ruth Durrer
PY - 2026
DA - 2026/10/22
PB - arXiv
DO - 10.48550/arxiv.2610.31226
UR - https://arxiv.org/abs/2610.31226
AB - The idea that the evaporation of black holes could end around the Planck mass and lead to relics possibly accounting for dark matter is quite old. In this article we focus on new models where the relics are metastable, typically with a lifetime of order M^5, where M is the initial mass of the black hole. We show that those relics would actually be quite luminous, radiating -- possibly as much as the stars -- in the optical or UV band. We explicitly construct a proposal for their direct detection.
ER -