PST correction ξ(d₀/d)² vs plate separation — the d⁻⁶ signal that departs from standard QFT
Vacuum between the plates
Plate separation d160.0 nm
PST correction0.191%
d₀ / d ratio0.044
Within next-generation reach (>0.19%)
δP = −ξ π²ℏc d₀² / (240 d⁶)
correction = ξ(d₀/d)²
d₀ ≈ 7 nm from PST dimensional reduction: d₀³ = ℓ★⁵/ℓ_P² with M★ ≈ 1.25 TeV (electroweak scale, N = 3 compact substrate dimensions)