Year: 2014
Type: article
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.
Author: Anson Hook
Institution: Institute for Advanced Study
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funder: U.S. Department of Energy
OpenAlex ID: W1978129260