Theory HEP Seminar

Celestial Holography from the Outside In

Sruthi Narayanan

Perimeter Institute

Celestial holography posits a putative duality between a theory of quantum gravity in asymptotically flat spacetime and a celestial conformal field theory that lives on its co-dimension two boundary. Thus far, most of the advances in this subfield have utilized a mapping between bulk S-matrix elements and boundary conformal correlators to understand more about the structure of celestial CFTs. In this talk I will give background on what has been done thus far and then discuss how we can study this duality in the opposite way: by considering specific conformal field theories and deducing what bulk theories they should correspond to. This talk is largely based on a paper from this past December “Celestial Gluon Amplitudes from the Outside In”.