Gaugino Condensation with S-Duality and Field-Theoretical Threshold Corrections

TL;DR

This paper investigates gaugino condensation in supergravity with S-duality, incorporating threshold corrections and intermediate scales, revealing new dilaton dynamics and confinement, with potential phenomenological impacts.

Contribution

It introduces a model that combines S-duality with threshold corrections and intermediate scales in gaugino condensation, showing confinement and novel dilaton behavior.

Findings

Confinement is achieved in the model.

A new dilaton running behavior is identified.

Intermediate scale effects influence the dynamics.

Abstract

We study gaugino condensation in the presence of an intermediate mass scale in the hidden sector. S-duality is imposed as an approximate symmetry of the effective supergravity theory. Furthermore, we include in the K\"ahler potential the renormalization of the gauge coupling and the one-loop threshold corrections at the intermediate scale. It is shown that confinement is indeed achieved. Furthermore, a new running behaviour of the dilaton arises which we attribute to S-duality. We also discuss the effects of the intermediate scale, and possible phenomenological implications of this model.