On New Vacua of non-Supersymmetric Strings

TL;DR

This paper introduces two novel non-supersymmetric ten-dimensional string vacua stabilized by constant electric or magnetic fields, arising from $ ext{α'}$ corrections, and analyzes their stability properties.

Contribution

It presents new classes of non-supersymmetric string vacua with explicit constructions and stability analysis, expanding understanding of string model landscapes.

Findings

Identified vacua stabilized by electric/magnetic fields from $ ext{α'}$ corrections.

Found unstable scalar perturbations in orientifold vacua.

Highlighted additional instabilities due to non-abelian couplings.

Abstract

We describe two new types of vacua for ten-dimensional string models without supersymmetry, in which dilaton potentials are compensated by constant electric or magnetic fields. These arise from $\alpha '$ corrections to the equations of motion, and we comment on the reliability of this expansion. We identify explicitly unstable singlet scalar perturbations in the orientifold vacua, and we argue that in both cases additional instabilities are induced by non-abelian couplings.