Stress tensor correlators of CCFT 2 using flat-space holography

Abstract

We use the correspondence between three-dimensional asymptotically flat spacetimes and two-dimensional contracted conformal field theories (CCFTs) to derive the stress tensor correlators of CCFT 2. On the gravity side we use the metric formulation instead of the Chern–Simons formulation of three-dimensional gravity. This method can also be used for the four-dimensional case, where there is no Chern–Simons formulation for the bulk theory.