Micro Black Hole Dark Matter
Year: 2025
Type: preprint
Abstract: The influence of a possible low gravity scale, concretely through the presence of extra dimensions or additional species, on radiation properties of micro black holes is investigated. In particular, the suppression of evaporation through the so-called memory-burden effect is shown to be stronger, occurs earlier and with sharper transition compared to the canonical Planck-scale regime. It is furthermore shown how this affects the possibility of light primordial black hole dark matter, constraints on which may weaken substantially and allow them to be as light as $10^{-5}\,M_{\rm P}$, thereby lying in the particle regime.
Source: arXiv (Cornell University)
Authors: Ettengruber, Manuel, Kuhnel, Florian
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W6966858416
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