PIRSA:16110020

Weinberg Soft Theorems from Weinberg Adiabatic Modes

APA

Mirbabayi, M. (2016). Weinberg Soft Theorems from Weinberg Adiabatic Modes. Perimeter Institute. https://pirsa.org/16110020

MLA

Mirbabayi, Mehrdad. Weinberg Soft Theorems from Weinberg Adiabatic Modes. Perimeter Institute, Nov. 08, 2016, https://pirsa.org/16110020

BibTex

          @misc{ pirsa_PIRSA:16110020,
            doi = {10.48660/16110020},
            url = {https://pirsa.org/16110020},
            author = {Mirbabayi, Mehrdad},
            keywords = {Particle Physics},
            language = {en},
            title = {Weinberg Soft Theorems from Weinberg Adiabatic Modes},
            publisher = {Perimeter Institute},
            year = {2016},
            month = {nov},
            note = {PIRSA:16110020 see, \url{https://pirsa.org}}
          }
          

Mehrdad Mirbabayi Institute for Advanced Study (IAS)

Collection
Talk Type Scientific Series

Abstract

Soft theorems for the scattering of low energy photons and gravitons and cosmological consistency conditions on the squeezed-limit correlation functions are both understood to be consequences of invariance under large gauge transformations. I apply the same method used in cosmology -- based on the identification of an infinite set of "adiabatic modes" and the corresponding conserved currents -- to derive flat space soft theorems for electrodynamics and gravity. I discuss how the recent derivations based on the asymptotic symmetry groups (BMS) can be continued to a finite size sphere surrounding the scattering event. Finally, I comment on Hawking-Perry-Strominger proposal of "soft hair on black holes".