Classical and Quantum SUSY Breaking Effects in IIB Local Models

TL;DR

This paper analyzes how supersymmetry breaking effects manifest in type IIB string models within the Large Volume Scenario, highlighting the dominance of anomaly mediation and the suppression of soft terms relative to the gravitino mass.

Contribution

It provides a detailed calculation of soft SUSY breaking terms in LVS models, emphasizing the role of anomaly mediation and the impact of compactification volume on flavor-changing neutral currents.

Findings

Soft terms are suppressed relative to the gravitino mass.

Gaugino masses are primarily generated by Weyl anomaly.

Soft terms are mainly produced by renormalization group running.

Abstract

We discuss the calculation of soft supersymmetry breaking terms in type IIB string theoretic models in the Large Volume Scenario (LVS). The suppression of FCNC gives a lower bound on the size of the compactification volume. This leads to soft terms which are strongly suppressed relative to the gravitino mass so that the dominant contribution to the gaugino masses comes from the Weyl anomaly. The other soft terms are essentially generated by the renormalization group running from the string scale to the TeV scale.