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Quantum gravity black holes as dark matter?
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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.
Forward citations
Cited by 3 Pith papers
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Acausal exact vacuum solutions in nonlocal gravity
A subclass of Gödel universes with closed timelike curves are exact vacuum solutions in nonlocal gravity for special nonlocal form factors.
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Acausal exact vacuum solutions in nonlocal gravity
Gödel-type universes with closed timelike curves are exact vacuum solutions in nonlocal gravity for a special class of form factors.
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Regular black holes with gravitational self-energy as dark matter
Incorporating non-local gravitational self-energy from a T-duality-inspired model yields a regular neutral black-hole metric with extremal Planck-mass particle-black-hole solutions that are thermodynamically stable an...
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