Result · Physics
Frontier problem
Resolved
Theta_QCD = 0 / Strong CP Problem
The Strong CP Problem asks why QCD does not violate CP symmetry despite having a parameter θ_QCD that could take any value. The τ-framework derives θ_QCD = 0 ex…
Physics
High impact frontier problem
QCD
Book IV
Overview
The Strong CP Problem asks why QCD does not violate CP symmetry despite having a parameter θ_QCD that could take any value. The τ-framework derives θ_QCD = 0 exactly from SA-i admissibility — the strong sector’s spectral structure forbids a non-zero θ term.
Result Statement
θ_QCD = 0 from SA-i admissibility. The strong sector’s spectral structure forbids CP violation. No axion needed. Status: Resolved.