A Celestial Matrix Model
High Energy Physics - Theory
2022-11-23 v1
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 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.
Cite
@article{arxiv.2205.02240,
title = {A Celestial Matrix Model},
author = {Arjun Kar and Lampros Lamprou and Charles Marteau and Felipe Rosso},
journal= {arXiv preprint arXiv:2205.02240},
year = {2022}
}
Comments
5 pages and 3 figures