S-Dual Gaugino Condensation and Supersymmetry Breaking

TL;DR

This paper explores how S-duality can incorporate gaugino condensates into supergravity models, addressing the runaway dilaton problem and achieving supersymmetry breaking with a single condensate through different transformation approaches.

Contribution

It presents two novel implementations of S-duality that successfully incorporate gaugino condensates and resolve key issues in supersymmetry breaking models.

Findings

Both approaches solve the runaway dilaton problem.

Supersymmetry breaking is achieved with a single gaugino condensate.

Supersymmetry breakdown relates to condensate transformation under T-duality.

Abstract

The principle of S-duality is used to incorporate gaugino condensates into effective supergravity (superstring) Lagrangians. We discuss two implementations of S-duality which differ in the way the coupling constant is transformed. Both solve the problem of the runaway dilaton and lead to satisfactory supersymmetry breaking in models with a {\em single} gaugino condensate. The breakdown of supersymmetry is intimately related to a nontrivial transformation of the condensate under T-duality.