Small field axion inflation with sub-Planckian decay constant

Kenji Kadota , Tatsuo Kobayashi , Akane Oikawa , Naoya Omoto , Hajime Otsuka , Takuya H. Tatsuishi

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classification ✦ hep-ph astro-ph.COhep-th

keywords axioninflationsmallconstantdecayfieldsub-planckianattention

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We study an axion inflation model recently proposed within the framework of type IIB superstring theory, where we pay a particular attention to a sub-Planckian axion decay constant. Our axion potential can lead to the small field inflation with a small tensor-to-scalar ratio, and a typical reheating temperature can be as low as GeV.

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Small field axion inflation with sub-Planckian decay constant

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