(A)dS locality and black hole information

The study of local physics in a theory of quantum gravity is an important problem. (A)dS/ CFT gives us a platform to study this issue from the CFT perspective. The construction of local bulk scalars in semiclassical limit of AdS/ CFT is well-known at order by order in 1/N perturbation. Here we discuss the recent developments on this topic and in particular describe how to extend this program for fields with spin- 1 and higher. We work in both AdS and dS spaces. Local field construction is also made at arbitrary cut-off surfaces in (A)dS and their prospective connections to holographic RG are explored. Finally we argue about various finite N scenarios and their effects on bulk locality and black hole information paradox.