Year: 2025
Type: preprint
Abstract: One of the major problems in quantum gravity research is the lack of signals at the reach of present or near-future experimental facilities. In this paper, we show that this is not the case. Contrary to previous claims, the quantum decay of de Sitter space into black hole spacetimes can be significant even after inflation and can be observed on galactic scales. Using the instanton formalism within the no-boundary proposal for a class of short-scale, quantum-gravity-improved black holes, we show that de Sitter space decay would result in the production of $10^{60}$ stable Planck-size black hole remnants within the current Hubble horizon, which is the number required to explain dark matter.
Source: arXiv (Cornell University)
Language: English
Subfield: Statistical and Nonlinear Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4417438344
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