Baryogenesis from Hawking radiation

2014/10/31 by Anson Hook · 1 voice · 2 citations
Physics and Astronomy · #Cosmology and Gravitation Theories #Black Holes and Theoretical Physics #Dark Matter and Cosmic Phenomena

paper · doi:10.1103/physrevd.90.083535

openalex publication_date 2014/10/31 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/31

Abstract

We show that in the presence of a chemical potential, black hole evaporation generates baryon number. If the inflaton or Ricci scalar is derivatively coupled to the B\text\ensuremath-L current, the expansion of the Universe acts as a chemical potential and splits the energy levels of particles and their antiparticles. The asymmetric Hawking radiation of primordial black holes can thus be used to generate a B\text\ensuremath-L asymmetry. If dark matter is produced by the same mechanism, the coincidence between the mass density of visible and dark matter can be naturally explained.

Citations

• Particle creation by black holes
• Vacuum polarization and the spontaneous loss of charge by black holes

Cited by

• Baryogenesis via Asymmetric Evaporation of Primordial Black Holes
• The Magnetic Origin of Primordial Black Holes: A Viable Dark Matter Scenario

Discussions

• Certainly, the total energy of the system has to remain the same, so all the mass of the black hole has to be converted into something that has an energy equivalent. So I think this question really bo [stackexchange, 2 points]

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