Dilaton Stabilization in the Context of Dynamical Supersymmetry Breaking through Gaugino Condensation

TL;DR

This paper explores how nonperturbative corrections in superstring effective theories can stabilize the dilaton, link supersymmetry breaking with gaugino condensation, and presents a simple model achieving phenomenologically relevant dilaton vevs.

Contribution

It introduces a novel approach using the linear multiplet formulation to achieve dilaton stabilization with supersymmetry breaking and gaugino condensation, differing from previous chiral models.

Findings

Dilaton vev within a phenomenologically interesting range.

Effective theory differs significantly from previous condensate models.

Nonperturbative corrections can naturally stabilize the dilaton.

Abstract

We study gaugino condensation in the context of superstring effective theories using the linear multiplet formulation for the dilaton superfield. Including nonperturbative corrections to the K\"ahler potential for the dilaton may naturally achieve dilaton stabilization, with supersymmetry breaking and gaugino condensation; these three issues are interrelated in a very simple way. In a toy model with a single static condensate, a dilaton $vev$ is found within a phenomenologically interesting range. The effective theory differs significantly from condensate models studied previously in the chiral formulation.