Non-Kaehler Heterotic String Compactifications with non-zero fluxes and constant dilaton

TL;DR

This paper constructs explicit six-dimensional heterotic string compactifications with non-zero fluxes, non-flat instantons, and constant dilaton, satisfying supersymmetry and equations of motion on nilmanifolds.

Contribution

It provides new explicit solutions with balanced Hermitian structures on nilmanifolds, satisfying heterotic supersymmetry and equations of motion with various curvature considerations.

Findings

Solutions satisfy heterotic supersymmetry equations with non-zero flux.

All solutions with (+)-connection on M_3 satisfy equations of motion.

Constructed solutions include balanced Hermitian structures on nilmanifolds.

Abstract

We construct new explicit compact supersymmetric valid solutions with non-zero field strength, non-flat instanton and constant dilaton to the heterotic equations of motion in dimension six. We present balanced Hermitian structures on compact nilmanifolds in dimension six satisfying the heterotic supersymmetry equations with non-zero flux, non-flat instanton and constant dilaton which obey the three-form Bianchi identity with curvature term taken with respect to either the Levi-Civita, the (+)-connection or the Chern connection. Among them, all our solutions with respect to the (+)-connection on the compact nilmanifold $M_3$ satisfy the heterotic equations of motion.