Celestial Locality and the Jacobi Identity


Ball, A. (2023). Celestial Locality and the Jacobi Identity. Perimeter Institute. https://pirsa.org/23030100


Ball, Adam. Celestial Locality and the Jacobi Identity. Perimeter Institute, Mar. 07, 2023, https://pirsa.org/23030100


          @misc{ pirsa_PIRSA:23030100,
            doi = {10.48660/23030100},
            url = {https://pirsa.org/23030100},
            author = {Ball, Adam},
            keywords = {Quantum Fields and Strings},
            language = {en},
            title = {Celestial Locality and the Jacobi Identity},
            publisher = {Perimeter Institute},
            year = {2023},
            month = {mar},
            note = {PIRSA:23030100 see, \url{https://pirsa.org}}

Adam Ball Brown University


In this talk I will show the equivalence of several different tests of the Jacobi identity for celestial currents at tree level, in particular finding a simple, practical condition on hard momentum space 4-point amplitudes in any EFT. Along the way I will clarify the role of the order of soft and collinear limits in obstructing the Jacobi identity for soft insertions and I will argue that, despite their current-algebra-like properties, soft insertions as formulated in this talk cannot be interpreted as local operators in celestial conformal field theory.

Zoom link:  https://pitp.zoom.us/j/99642885302?pwd=dWZhbzZUYnBuSlJ3UzBhSHdqdzVKdz09