Non-perturbative stabilization of two Kähler moduli in type-IIB/F theory and the inflaton potential

Centre of Advanced Studies, Department of Physics, The University of Burdwan - Burdwan 713 104, India

^(a) E-mail: bghosh@phys.buruniv.ac.in (corresponding author)

Received: 30 May 2023
Accepted: 31 July 2023

Abstract

We consider a combination of perturbative and non-perturbative corrections in Kähler moduli stabilizations in the configuration of three magnetised intersecting D7 branes in the type-IIB/F theory, compactified on the 6d orbifold of Calabi-Yau three-fold (CY₃). Two of the Kähler moduli are stabilized non-perturbatively, out of the three which get perturbative corrections up to one-loop–order multi-graviton scattering amplitudes in the large volume scenario. In this framework, the dS vacua are achieved through all Kähler moduli stabilizations by considering the D-term. We obtain inflaton potentials of slow-roll plateau type, which are expected by recent cosmological observations. Calculations of cosmological parameters with the potentials yield experimentally favoured values.