Conformal Supersymmetry Breaking and Dynamical Tuning of the Cosmological Constant

TL;DR

This paper introduces conformal supersymmetry breaking models that connect R-symmetry breaking and supersymmetry breaking scales, enabling dynamical tuning to naturally suppress the cosmological constant without excessive fine-tuning.

Contribution

It presents a novel class of models linking conformal breaking and supersymmetry breaking scales via the superpotential's constant term, reducing fine-tuning for the cosmological constant.

Findings

The models establish a direct relation between R-symmetry breaking and SUSY breaking scales.

Dynamical tuning in these models significantly lowers the required fine-tuning for a small cosmological constant.

The approach offers a new perspective on addressing the cosmological constant problem.

Abstract

We propose "conformal supersymmetry breaking" models, which tightly relate the conformal breaking scale (i.e. R-symmetry breaking scale) and the supersymmetry breaking scale. The both scales are originated from the constant term in the superpotential through the common source of the R-symmetry breaking. We show that dynamical tuning between those mass scales significantly reduces the degree of fine-tuning necessary for generating the almost vanishing cosmological constant.