PIRSA:22100061

A Celestial Matrix Model

Marteau, C. (2022). A Celestial Matrix Model. Perimeter Institute. https://pirsa.org/22100061

Marteau, Charles. A Celestial Matrix Model. Perimeter Institute, Oct. 06, 2022, https://pirsa.org/22100061 

          @misc{ pirsa_PIRSA:22100061,
            doi = {10.48660/22100061},
            url = {https://pirsa.org/22100061},
            author = {Marteau, Charles},
            keywords = {},
            language = {en},
            title = {A Celestial Matrix Model},
            publisher = {Perimeter Institute},
            year = {2022},
            month = {oct},
            note = {PIRSA:22100061 see, \url{https://pirsa.org}}
          }

Charles Marteau

University of British Columbia

Talk number
PIRSA:22100061
Collection
Talk Type
Abstract
We construct a Hermitian random matrix model that provides a stable non-perturbative completion of Cangemi-Jackiw (CJ) gravity, a two-dimensional theory of black holes in asymptotically flat spacetimes. The matrix model reproduces, to all orders in the topological expansion, the Euclidean partition function of CJ gravity with an arbitrary number of boundaries. The non-perturbative completion enables the exact computation of observables in flat space quantum gravity which we use to explicitly characterize the Bondi Hamiltonian spectrum. We discuss the implications of our results for the flat space S-matrix and black holes.