# Jumping Through Loops: On Soft Terms from Large Volume Compactifications

## TL;DR

This paper assesses the consistency of the large volume scenario in string theory with D-branes and O-planes, finding it robust with only minor corrections to soft supersymmetry breaking terms, and discusses implications for various compactifications.

## Contribution

It provides the first consistency check of the large volume scenario in string theory considering D-branes and O-planes, highlighting its robustness and identifying where corrections may be significant.

## Key findings

- Soft terms receive only subleading corrections.
- The scenario remains consistent under the effective action expansion.
- Corrections can be more significant in certain compactification limits.

## Abstract

We subject the phenomenologically successful large volume scenario of hep-th/0502058 to a first consistency check in string theory. In particular, we consider whether the expansion of the string effective action is consistent in the presence of D-branes and O-planes. Due to the no-scale structure at tree-level, the scenario is surprisingly robust. We compute the modification of soft supersymmetry breaking terms, and find only subleading corrections. We also comment that for large-volume limits of toroidal orientifolds and fibered Calabi-Yau manifolds the corrections can be more important, and we discuss further checks that need to be performed.