IIB String Theory and Sequestered Inflation

Renata Kallosh, Andrei Linde, Timm Wrase, Yusuke Yamada*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

We develop sequestered inflation models, where inflation occurs along flat directions in supergravity models derived from type IIB string theory. It is compactified on a (Formula presented.) orientifold with generalized fluxes and O3/O7-planes. At Step I, we use flux potentials which 1) satisfy tadpole cancellation conditions and 2) have supersymmetric Minkowski vacua with flat direction(s). The 7 moduli are split into heavy and massless Goldstone multiplets. At Step II we add a nilpotent multiplet and uplift the flat direction(s) of the type IIB string theory to phenomenological inflationary plateau potentials: α-attractors with 7 discrete values (Formula presented.). Their cosmological predictions are determined by the hyperbolic geometry inherited from string theory. The masses of the heavy fields and the volume of the extra dimensions change during inflation, but this does not affect the inflationary dynamics.

Original languageEnglish
Article number2100127
JournalFortschritte der Physik
Volume69
Issue number11-12
DOIs
Publication statusPublished - 2021 Dec
Externally publishedYes

Keywords

  • cosmology
  • inflation
  • string theory
  • supergravity

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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