Massive holographic QFTs in de Sitter

We study strongly coupled mass-deformed-CFT on a fixed de Sitter spacetime in three dimensions via holography. elucidate the global causal structure of four-dimensional dual to invariant vacuum state. The conformal boundaries appear as spacelike defects sourced by mass deformation, which extend into bulk curvature singularities AdS. compute all one- and two-point functions deformed-CFT stress tensor scalar operator order-by-order deformation for simple holographic model. These correlation admit spectral representation sum poles corresponding normalisable modes bulk.