Renormalization-group running across sectors in the E6L × E6R framework
Develop a quantitative renormalization-group analysis across the left and right sectors of the E6^L × E6^R framework that consistently evolves the model’s mass-ratio boundary conditions and mixing inputs to experimental schemes and scales, including thresholds and matching.
References
Open issues. (a) A UV origin of $\delta$, $\varepsilon$, and $\kappa_{23}$, ideally from the $U(1){\rm dem}$ sector of $E_6R$; (b) quantitative RG--running across sectors in the $E_6L\times E_6R$ setting; (c) leptonic absolute mass scale and Majorana phases; (d) a mechanism for $\theta{\rm QCD}\approx 0$.
— Fermion mass ratios from the exceptional Jordan algebra
(2508.10131 - Singh, 13 Aug 2025) in Clarifications and limitations, Open issues paragraph