No inflation in type IIA strings on rigid Calabi-Yau spaces

Yuki Wakimoto, Sergei V. Ketov

Результат исследований: Материалы для журналаСтатьярецензирование

Аннотация

We investigate whether cosmological inflation is possible in a class of flux compactifications of type IIA strings on rigid Calabi-Yau manifolds, when all perturbative string corrections are taken into account. We confine ourselves to the universal hypermultiplet and an Abelian vector multiplet, representing matter in four dimensions. Since all axions can be stabilized by D-instantons, we choose the dilaton and a Kähler modulus as the only running scalars. Though positivity of their scalar potential can be achieved, we find that there is no slow roll (ε > 13/6), and no graceful exit because the scalar potential has the runaway behavior resulting in decompactification. We conclude that it is impossible to generate phenomenologically viable inflation in the given class of flux compactifications of type IIA strings without explicit breaking of the N = 2 local supersymmetry of the low-energy effective action.

Язык оригиналаАнглийский
Номер статьи083E02
ЖурналProgress of Theoretical and Experimental Physics
Том2017
Номер выпуска8
DOI
СостояниеОпубликовано - 1 авг 2017

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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