Axion inflation and Affleck-Dine baryogenesis

Kensuke Akita, Tatsuo Kobayashi, Hajime Otsuka

    Research output: Contribution to journalArticlepeer-review

    14 Citations (Scopus)


    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.

    Original languageEnglish
    Article number042
    JournalJournal of Cosmology and Astroparticle Physics
    Issue number4
    Publication statusPublished - 2017 Apr 26


    • axions
    • baryon asymmetry
    • string theory and cosmology

    ASJC Scopus subject areas

    • Astronomy and Astrophysics


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