2014/07/28 by Nan Li, Ding-fang Zeng
Physics and Astronomy · #Baryon #Baryon asymmetry #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Economics #Geology #Inflation (cosmology) #Natural (archaeology) #Nuclear physics #Paleontology #Particle physics #Physics #Relativity and Gravitational Theory #Theoretical physics #astro-ph.CO
paper · pdf · doi:10.1103/physrevd.90.123542
published as Phys. Rev. D90 (2014)123542 · Preliminary version, any comment or reference notification is welcome
arxiv created 2014/07/28 · openalex publication_date 2014/12/30 · arxiv updated 2015/06/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
A variation of the Affleck-Dine mechanism was proposed to generate the observed baryon asymmetry by Hertzberg and Karouby [Phys. Rev. D 89, 006523 (2014); Phys. Lett. B 737, 34 (2014)], in which the inflaton was assumed to be a complex scalar field with a weakly broken U(1) symmetry, and the baryon asymmetry generation was easily unified with the stage of inflation and reheating. We adapt this mechanism to a general natural inflation scenario and compare the results with those in chaotic inflation models. We compute the net particle number obtained at the end of inflation and transform it into a net baryon number after reheatings. We observed that in our natural inflation model, the desired baryon-to-photon ratio can be achieved equally well as in chaotic models.