Equation Icon  ( ) ′ α′ β′ ′ ′ ′′ ′ γ′ 1- ′ ′′′ γ′ δ′ 3 Ωαβ(x,x ) = g αg β Cα β + C αβ γσ + 2 Cα βγ δσ σ + O (𝜖 ), (6.5 )