Equation Icon  2 2 M-Pl√ --- 3- -3β- 2 -β-- 2( 2 2) ℒ = 2 − gR + 2 π□ π + 2Λ33(∂π) □ π + 2Λ63(∂π ) (∂α∂βπ ) − (□ π) + ℒmat [ψ, &tidle;gμν], (1.4.77 )