PIRSA:22110022

Comments on Soft Algebras from All-Plus Gluon Amplitudes

Narayanan, S. (2022). Comments on Soft Algebras from All-Plus Gluon Amplitudes. Perimeter Institute. https://pirsa.org/22110022

Narayanan, Sruthi. Comments on Soft Algebras from All-Plus Gluon Amplitudes. Perimeter Institute, Nov. 01, 2022, https://pirsa.org/22110022 

          @misc{ pirsa_PIRSA:22110022,
            doi = {10.48660/22110022},
            url = {https://pirsa.org/22110022},
            author = {Narayanan, Sruthi},
            keywords = {Quantum Fields and Strings},
            language = {en},
            title = {Comments on Soft Algebras from All-Plus Gluon Amplitudes},
            publisher = {Perimeter Institute},
            year = {2022},
            month = {nov},
            note = {PIRSA:22110022 see, \url{https://pirsa.org}}
          }

Sruthi Narayanan Perimeter Institute for Theoretical Physics

Talk numberPIRSA:22110022
DOI10.48660/22110022
Collection
Talk Type Scientific Series
Subject

Abstract

Celestial holography posits a 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. By studying soft theorems of scattering amplitudes in the bulk it was shown that there exist infinite towers of corresponding soft currents in cCFT and their algebra was calculated. In this talk I will consider a bulk theory of Yang-Mills coupled to a massive scalar and show, via soft limits, that the corresponding boundary algebra admits a level proportional to the strength of the background. I will comment on some other aspects of this deformation as well as potentially important subtleties we have encountered with our method of computing celestial amplitudes.

Zoom link:  https://pitp.zoom.us/j/95423960414?pwd=RVoxc1FRRGRmL2RIMXJpbXFKZVBFdz09