ffektive Perkolations-Kitaev-Lagrangedichte für den CMB-Phasenübergang bei ℓ < ℓ_H/e: F(ℓ) als Kink-Lösung, kritische Exponenten und fraktale Horizontdimension

This paper supplements Pavelec (2026, DOI: 10.5281/zenodo.20496448) by deriving the CMB modification function F(ℓ) as the kink solution of an effective Landau-Ginzburg field equation, rather than setting it phenomenologically. The critical multipole ℓ_crit = ℓ_H/e follows parameter-free from an entropy fixed point. A Kitaev coupling provides topological protection of the transition. The empirical fit parameter Δ_fit ≈ 0.725 is interpreted as an effective correlation length exponent ν_eff, implying a fractal effective dimension d_eff ≈ 2.74 of the horizon percolation structure — a new, independently testable prediction.