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Is inflation from unwinding fluxes IIB?

Authors
  • Gautason, Fridrik Freyr1, 2
  • Schillo, Marjorie1
  • Van Riet, Thomas1
  • 1 K.U. Leuven, Instituut voor Theoretische Fysica, Celestijnenlaan 200D, Leuven, B-3001, Belgium , Leuven (Belgium)
  • 2 Université Paris Saclay, CEA, CNRS, Institut de Physique Théorique, Orme des Merisiers, Gif-sur-Yvette, F-91191, France , Gif-sur-Yvette (France)
Type
Published Article
Journal
Journal of High Energy Physics
Publisher
Springer-Verlag
Publication Date
Mar 07, 2017
Volume
2017
Issue
3
Identifiers
DOI: 10.1007/JHEP03(2017)037
Source
Springer Nature
Keywords
License
Green

Abstract

In this paper we argue that the mechanism of unwinding inflation is naturally present in warped compactifications of type IIB string theory with local throats. The unwinding of flux is caused by its annihilation against branes. The resulting inflaton potential is linear with periodic modulations. We initiate an analysis of the inflationary dynamics and cosmological observables, which are highly constrained by moduli stabilization. For the simplified model of single-Kähler Calabi-Yau spaces we find that many, though not all of the consistency constraints can be satisfied. Particularly, in this simple model geometric constraints are in tension with obtaining the observed amplitude of the scalar power spectrum. However, we do find 60 efolds of inflation with a trans-Planckian field excursion which offers the hope that slightly more complicated models can lead to a fully consistent explicit construction of large field inflation of this kind.

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