Spontaneous R-symmetry breaking from the renormalization group flow

TL;DR

This paper introduces a novel mechanism for spontaneous R-symmetry breaking in four-dimensional dynamical supersymmetry breaking models, utilizing renormalization group flow properties of coupling constants to generate hierarchies.

Contribution

It presents a new approach to R-symmetry breaking based on RG flow, applicable to models with specific R-charges, combining one- and two-loop effects.

Findings

R-symmetry can be spontaneously broken via RG flow mechanisms.

Hierarchies among couplings enable R-symmetry breaking in models with R=0 and R=2 fields.

The mechanism involves both one- and two-loop effects at different regions of field space.

Abstract

We propose a mechanism of R-symmetry breaking in four-dimensional DSB models based on the RG properties of the coupling constants. By constraining the UV sector, we generate new hierarchies amongst the couplings that allow a spontaneously broken R-symmetry in models with pure chiral fields of R-charges R = 0 and R = 2 only. The result is obtained by a combination of one- and two-loop effects, both at the origin of field space and in the region dominated by leading log potentials.