A Z_2 x Z_2 orientifold with spontaneously broken supersymmetry

TL;DR

This paper constructs a four-dimensional Z_2 x Z_2 orientifold model where supersymmetry is broken via a Scherk-Schwarz mechanism, affecting gauge sectors through radiative corrections, resulting in a non-chiral gauge group.

Contribution

It introduces a novel Z_2 x Z_2 orientifold model with spontaneous supersymmetry breaking via Scherk-Schwarz mechanism affecting only certain sectors at tree level.

Findings

Supersymmetry is broken by a temperature-like Scherk-Schwarz mechanism.

The gauge group is non-chiral: Usp(16)^2 x Usp(8)^4.

Supersymmetry breaking propagates through radiative corrections.

Abstract

We present a Z_2 x Z_2 four dimensional orientifold in which supersymmetry is broken by a temperature-like Scherk-Schwarz mechanism. As usual in this type of models, at the tree-level the breaking affects only the branes tangent to the direction involved by the SS deformation, and it can propagate only through radiative corrections to other sectors, where the gauge group is broken. The result is a non-chiral model with gauge group Usp(16)^2 x Usp(8)^4.