Moduli Redefinitions and Moduli Stabilisation

TL;DR

This paper examines how field redefinitions at one loop influence moduli stabilisation and supersymmetry breaking in string compactifications, highlighting their potential to dominate scalar potentials especially for large moduli.

Contribution

It provides a detailed analysis of the impact of moduli redefinitions on the LARGE volume scenario, including effects on the scalar potential and supersymmetry breaking.

Findings

Redefinitions can surpass $\alpha'$ corrections for small moduli.

For large moduli, redefinitions may dominate the scalar potential.

Redefinitions influence the structure of supersymmetry breaking and soft terms.

Abstract

Field redefinitions occur in string compactifications at the one loop level. We review arguments for why such redefinitions occur and study their effect on moduli stabilisation and supersymmetry breaking in the LARGE volume scenario. For small moduli, although the effect of such redefinitions can be larger than that of the $\alpha'$ corrections in both the K\"ahler and scalar potentials, they do not alter the structure of the scalar potential. For the less well motivated case of large moduli, the redefinitions can dominate all other terms in the scalar potential. We also study the effect of redefinitions on the structure of supersymmetry breaking and soft terms.