Towards natural inflation from weakly coupled heterotic string theory

Hiroyuki Abe, Tatsuo Kobayashi, Hajime Otsuka

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


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
Issue number6
Publication statusPublished - 2015
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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