Combining High-scale Inflation with Low-energy SUSY

TL;DR

This paper presents a scenario where high-scale inflation and low-energy supersymmetry coexist by employing two different mechanisms for modulus stabilization during and after inflation.

Contribution

It introduces a novel approach to moduli stabilization that separates inflationary and post-inflationary mechanisms, enabling high-scale inflation with low-energy SUSY.

Findings

Modulus is stabilized with a large mass during inflation.

Post-inflation stabilization can be achieved via KKLT superpotential.

The scenario allows for decoupling of inflation scale and SUSY breaking scale.

Abstract

We propose a general scenario for moduli stabilization where low-energy supersymmetry can be accommodated with a high scale of inflation. The key ingredient is that the stabilization of the modulus field during and after inflation is not associated with a single, common scale, but relies on two different mechanisms. We illustrate this general scenario in a simple example, where during inflation the modulus is stabilized with a large mass by a Kahler potential coupling to the field which provides the inflationary vacuum energy via its F-term. After inflation, the modulus is stabilized, for instance, by a KKLT superpotential.