Towards natural inflation from weakly coupled heterotic string theory

Hiroyuki Abe, Tatsuo Kobayashi, Hajime Otsuka

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    Abstract

    We propose natural inflation from the heterotic string theory on the "Swiss-Cheese" Calabi- Yau manifold with multiple U(1) magnetic fluxes. Such multiple U(1) magnetic fluxes stabilize the same number of the linear combination of the universal axion and Kähler axions, and one of the Kähler axions is identified as the inflaton. This axion decay constant can be determined by the size of one-loop corrections to the gauge kinetic function of the hidden gauge groups, which leads effectively to the trans-Planckian axion decay constant consistent with the Planck data. During the inflation, the real parts of the moduli are also stabilized by employing the nature of the "Swiss-Cheese" Calabi-Yau manifold.

    Original languageEnglish
    Article number063E02
    JournalProgress of Theoretical and Experimental Physics
    Volume2015
    Issue number6
    DOIs
    Publication statusPublished - 2015

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    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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