Axion inflation and Affleck-Dine baryogenesis

Journal Article · Sat Apr 01 00:00:00 EDT 2017 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2017/04/042· OSTI ID:22679899

Akita, Kensuke; Otsuka, Hajime ^[1]; Kobayashi, Tatsuo ^[2]

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1. Department of Physics, Waseda University, Okubo 3-4-1, Shinjuku-ku, Tokyo, 169-8555 Japan (Japan)
2. Department of Physics, Hokkaido University, Kita-10, Nishi-8, Kita-ku, Sapporo, 060-0810 Japan (Japan)

String theory generically predicts the coupling between the Affleck-Dine field and axion field through higher-dimensional operators. We thus explore the Affleck-Dine baryogenesis on an axion background. It turns out that the axion oscillation produces an enough amount of baryon asymmetry of the Universe just after the inflation, even without a soft supersymmetry-breaking A -term. This baryogenesis scenario is applicable to the string axion inflation.

• OSTI ID: 22679899
• Journal Information: Journal of Cosmology and Astroparticle Physics, Vol. 2017, Issue 04; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ASYMMETRY
AXIONS
BARYONS
COUPLING
INFLATIONARY UNIVERSE
OSCILLATIONS
PARTICLE PRODUCTION
SIMULATION
STRING THEORY
SUPERSYMMETRY
SYMMETRY BREAKING
UNIVERSE