A Class of Non-Supersymmetric Open String Vacua

TL;DR

This paper investigates non-supersymmetric four-dimensional open string models derived from type IIB string theory compactified on specific manifolds, demonstrating the existence of consistent solutions free of tadpoles despite lacking supersymmetry.

Contribution

It identifies two connected solutions to tadpole conditions in non-supersymmetric models with Scherk-Schwarz deformation, expanding understanding of consistent non-supersymmetric string vacua.

Findings

Two solutions to tadpole conditions are connected via Wilson lines.

Models are free of R-R and NS-NS tadpoles despite non-supersymmetry.

Non-supersymmetric vacua can be consistent and stable.

Abstract

We analyze non-supersymmetric four dimensional open string models of type IIB string theory compactified on $T^2\times K3$ with Scherk-Schwarz deformation acting on an $S^1$ of the $T^2$ torus. We find that there are always two solutions to the tadpole conditions that are shown to be connected via Wilson lines in an non-trivial way. These models although non-supersymmetric, are free of R-R and NS-NS tadpoles.