Equation Icon  ( ) ⟨ˆTab(x,x′)⟩ = 1- gp′bG (1);p′a + gp′aG (1);p′b − -1gp′q G (1);p′q gab 6 ( ) 12 [( ) ] 1-- p′ q′ (1) ′′ (1) 1-- (1) ′p′ (1) p − 12 g a g b G ;pq + G ;ab + 12 G ;p + G ;p gab 1 ( 1 ) + --G (1) Rab − --R gab . (63 ) 12 2