# State-operator correspondence in celestial conformal field theory

@article{Crawley2021StateoperatorCI,
title={State-operator correspondence in celestial conformal field theory},
author={Erin Crawley and Noah Miller and Sruthi A. Narayanan and Andrew Strominger},
journal={Journal of High Energy Physics},
year={2021}
}
Abstract The bulk-to-boundary dictionary for 4D celestial holography is given a new entry defining 2D boundary states living on oriented circles on the celestial sphere. The states are constructed using the 2D CFT state-operator correspondence from operator insertions corresponding to either incoming or outgoing particles which cross the celestial sphere inside the circle. The BPZ construction is applied to give an inner product on such states whose associated bulk adjoints are shown to… Expand
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