Predictions for orientifold field theories from type 0' string theory

TL;DR

This paper uses type 0' string theory to predict properties of non-supersymmetric orientifold field theories, including mass ratios and domain wall tensions, providing insights into their strong coupling behavior.

Contribution

It offers the first predictions of mass ratios and domain wall tensions in orientifold field theories derived from string theory duals.

Findings

Mass ratio between pseudoscalar and scalar mesons estimated as axial to scale anomaly ratio.

Domain wall tension related to quark condensate value computed.

Predictions connect string theory parameters to field theory observables.

Abstract

Two predictions about finite-N non-supersymmetric "orientifold field theories" are made by using the dual type 0' string theory on C^3 / Z_2 x Z_2 orbifold singularity. First, the mass ratio between the lowest pseudoscalar and scalar color-singlets is estimated to be equal to the ratio between the axial anomaly and the scale anomaly at strong coupling, M_- / M_+ ~ C_- / C_+. Second, the ratio between the domain wall tension and the value of the quark condensate is computed.