Axion inflation and Affleck-Dine baryogenesis

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Published 26 April 2017 © 2017 IOP Publishing Ltd and Sissa Medialab srl
, , Citation Kensuke Akita et al JCAP04(2017)042 DOI 10.1088/1475-7516/2017/04/042

1475-7516/2017/04/042

Abstract

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.

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10.1088/1475-7516/2017/04/042