New potentials for string axion inflation

Tatsuo Kobayashi, Akane Oikawa, Hajime Otsuka

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)


We propose a new type of axion inflation with complex structure moduli in the framework of type IIB superstring theory compactified on the Calabi-Yau manifold. The inflaton is identified as the axion for the complex structure moduli whose potential is originating from instantonic corrections appearing through the period vector of the mirror Calabi-Yau manifold. The axionic shift symmetry is broken down to the discrete one by the inclusion of the instantonic correction and certain three-form fluxes. Our proposed inflation scenario is compatible with Kähler moduli stabilization. We also study a typical reheating temperature in the case of complex structure moduli inflation.

Original languageEnglish
Article number083508
JournalPhysical Review D
Issue number8
Publication statusPublished - Apr 13 2016
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)


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