Single field slow-roll effective potential from K\"ahler moduli stabilizations in type IIB/F-theory

TL;DR

This paper derives a single-field slow-roll inflaton potential within type IIB/F-theory compactifications, stabilizing K"ahler moduli through perturbative and non-perturbative corrections, providing a framework for inflation models in string theory.

Contribution

It introduces a novel method to stabilize K"ahler moduli and derive an effective inflaton potential in a specific string compactification setup.

Findings

Successful stabilization of two K"ahler moduli via perturbative corrections.

Remaining K"ahler modulus stabilized by non-perturbative effects.

Derivation of a single-field slow-roll inflaton potential.

Abstract

We derive a single field slow-roll inflaton potential in three intersecting $D7$ branes configuration under type IIB/F-theory compactification. Among three resulting K\"{a}hler moduli corresponding to three orthogonal directions, two are stabilized via perturbative corrections in K\"{a}hler potential arising from large volume scenario ($\alpha'^3$) and four graviton scattering amplitude upto one loop level and the remaining K\"{a}hler modulus is stabilized by KKLT-type non-perturbative correction in superpotential. The symmetric combination of two canonically normalized and perturbatively stabilized K\"{a}hler moduli gives the inflaton field and the anti-symmetric combination manifests as an auxiliary field.