Diffuse emission from black hole remnants

Sina Kazemian (1) , Mateo Pascual (1) , Carlo Rovelli (2) , Francesca Vidotto (1)

1 Western University Canada
2 CPT - Centre de Physique Théorique - UMR 7332

We point out that conservation of information implies that remnants produced at the end of black hole evaporation should radiate in the low-frequency spectrum. We model this emission and derive properties of the diffuse radiation emitted by an otherwise dark population of such objects. We show that for early universe black holes the frequency and energy density of this radiation, which are in principle measurable, suffice to estimate the remnant density.

Mots clés: radiation: emission; black hole: evaporation; radiation: density; energy: density; conservation law; diffusion; information theory; frequency: spectrum; frequency: low

Domaines: Relativité Générale et Cosmologie Quantique [gr-qc]; Physique des Hautes Energies - Théorie [hep-th]

Sina Kazemian, Mateo Pascual, Carlo Rovelli, Francesca Vidotto. Diffuse emission from black hole remnants. 2024. ⟨hal-03736637⟩