Script N sign = 2 SCFT and M theory on AdS₄ ×Q^1,1,1

Coincident M2 branes at a conical singularity are related to M theory on AdS₄ × X₇ for an appropriate 7 dimensional Sasaki-Einstein manifold X₇. For X₇ = Q^1,1,1 = (SU(2) × SU(2) × SU(2)/(U(1) × U(1)) which was found sometime ago, the infrared limit of the theory on N M2 branes was constructed recently. It is the SU(N) × SU(N) × SU(N) gauge theories with three series of chiral fields A_i,i = 1,2 transforming in the (N,N̄,1) representation, B_j,J = 1,2 transforming in the (1,N,N̄) representation and C_k,k = 1,2 transforming in the (1,N,N̄) representation. From the scalar Laplacian of X₇ on the supergravity side, we discuss the spectrum of chiral primary operators of dual script N sign = 2 superconformal field theory in 3 dimensions. We study M5 branes wrapped over 5-cycle of X₇ which were identified as (three types of) baryon like operators made out of N chiral fields recently. We consider M5 brane wrapped over 3-cycle of X₇ which plays the role of domain wall in AdS₄. The new aspect arises when baryon like operators (M5 branes wrapped over 5-cycle) cross a domain wall (M5 brane wrapped over 3-cycle), M2 brane between them must be created.