1998/10/31 by K. Koyama, Kazuya Koyama, Jiro Soda · 2 citations
Physics and Astronomy · #Baryogenesis #Baryon #Baryon number #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark matter #Order (exchange) #Particle physics #Perturbation (astronomy) #Physics #Quantum mechanics #astro-ph #hep-ph
paper · pdf · doi:10.1103/physrevlett.82.2632
published as Phys.Rev.Lett. 82 (1999) 2632-2635 · 4 pages, no figures, accepted for publication in Phys.Rev.Lett
arxiv created 1999/02/16 · openalex publication_date 1999/03/29 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We propose a primeval baryon isocurvature model in the context of the Affleck-Dine (AD) baryogenesis mechanism. Quantum fluctuations of the AD field during inflation produce fluctuations in the baryon number. We obtain a model which gives both the appropriate baryon to entropy ratio of the order 10^\ensuremath-11 and the Gaussian baryon isocurvature perturbation of the order 10^\ensuremath-3 at the break of the spectrum 1 Mpc with the steep spectrum n\phantom\rule0ex0ex=\phantom\rule0ex0ex\ensuremath-1.5 on large scales >1Mpc.