International Journal of Modern Physics D· 2026Q2
Perturbative Kähler Moduli Inflation
- 17citations
- Q2SCImago
- 2026year
Short summary
Two classes of inflationary models are constructed within type IIB string theory, stabilizing multiple Kähler moduli using perturbative corrections and aligning with CMB data.
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Key points
- Two classes of inflationary models are constructed within type IIB string theory.
- A procedure for stabilizing multiple Kähler moduli using perturbative corrections is highlighted.
- Both models align with CMB data and cosmological constraints.
- The first class of models yields a potential of the form [Formula: see text] with scalar-to-tensor ratio [Formula: see text].
- The second class of models, loop blow-up inflation, yields a potential of the form [Formula: see text] with scalar-to-tensor ratio [Formula: see text].
AI-generated from the title and abstract; the full text is not read.
Abstract
In this work, we present two classes of inflationary models in the framework of type IIB string theory. The inflatons correspond to blow-up Kähler modulus arising from compactifying type IIB string theory on a Calabi-Yau. Using perturbative corrections, we first highlight a procedure for stabilising more than one Kähler modulus. For the case of two Kähler moduli, we explicitly construct two classes of inflationary potentials within the Kähler cone which satisfy both EFT and cosmological constraints. The first class of models, arising from moduli redefinition of the blow-up mode, garners a potential of the form [Formula: see text] align with CMB data with scalar-to-tensor ratio [Formula: see text]. The second class of models, which have been recently proposed as loop blow-up inflation, have a form [Formula: see text], also agrees with CMB data with scalar-to tensor-ratio [Formula: see text]. Our work differs from the original loop blow-up inflation in terms of stabilization mechanism and subsequently the scalar-to tensor ratio.
The authors' abstract, as published at the source. International Journal of Modern Physics D, 2026 · DOI ↗
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Field: Astronomy and Astrophysics
Astronomy and AstrophysicsPhysics and Astronomy