PBH evaporation, baryon asymmetry,and dark matter

Abstract

Sufficiently light primordial black holes (PBH) could evaporate in the very early universe and dilute the preexisting baryon asymmetry and/or the frozen density of stable relics. The effect is especially strong in the case that PBHs decayed if and when they dominated the cosmological energy density. The size of the reduction is first calculated analytically under the simplifying assumption of the delta-function mass spectrum of PBH and in instant decay approximation. In the realistic case of exponential decay and for an extended mass spectrum of PBH the calculations are made numerically. Resulting reduction of the frozen number density of the supersymmetric relics opens for them a wider window to become viable dark matter candidate.

The grant number is edited and corrected in this version

References in corpus (5)

• Inhomogeneous baryogenesis, cosmic antimatter, and dark matter
• Higgsino Dark Matter in High-Scale Supersymmetry
• Wino-like Minimal Dark Matter and future colliders
• Origin of supermassive black holes
• Electroweak phase transition and entropy release in the early universe

Cited by in corpus (17)

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• Distinct signatures of spinning PBH domination and evaporation: doubly peaked gravitational waves, dark relics and CMB complementarity
• Testing Super-Heavy Dark Matter from Primordial Black Holes with Gravitational Waves
• Dark Matter and Leptogenesis from Gravitational Production
• Cogenesis of Baryon Asymmetry and Gravitational Dark Matter from Primordial Black Holes
• Primordial black holes and scotogenic dark matter
• Detailed Calculation of Primordial Black Hole Formation During First-Order Cosmological Phase Transitions
• Towards baryogenesis via absorption from Primordial Black Holes
• Dark Sector extensions of the Littlest Seesaw in the presence of Primordial Black Holes
• Gravitational Dark Matter and Primordial Black Holes
• Primordial black holes and mirror dark matter
• Particle dark matter density and entropy production in the early universe
• Study of entropy production due to electroweak phase transition in $Z_2$ symmetric extension of the Standard Model
• Charge asymmetry of new stable quarks in baryon asymmetrical Universe