Stress tensor correlators of $$\hbox {CCFT}_2$$ CCFT 2 using flat-space holography

Abstract

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 $$\hbox {CCFT}_2$$ 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.