Baryon Number Asymmetry Induced by Coherent Motions of a Cosmological Axion-Like Pseudoscalar Conference Paper uri icon

abstract

  • A cosmological pseudoscalar field coupled to hypercharge topological number density can exponentially amplify hyperelectric and hypermagnetic fields in the symmetric phase of the electroweak plasma while coherently rolling or oscillating, leading to the formation of a condensate of topological number density. The topological number can be converted, under certain conditions, into baryon number in sufficient amount to explain the observed baryon asymmetry of the universe. We focus on a singlet elementary hypercharge axion (HCA) …

publication date

  • March 16, 2000