PIRSA:22110113 Scientific Series Particle Physics

DOI10.48660/22110113

Series: Particle Physics

de la Cruz, L. (2022). From KMOC to WQFT in Yang-Mills and gravity. Perimeter Institute. https://pirsa.org/22110113

de la Cruz, Leonardo. From KMOC to WQFT in Yang-Mills and gravity. Perimeter Institute, Nov. 28, 2022, https://pirsa.org/22110113 

@misc{ pirsa_PIRSA:22110113,
  doi = {10.48660/22110113},
  url = {https://pirsa.org/22110113},
  author = {de la Cruz, Leonardo},
  keywords = {Particle Physics, Quantum Fields and Strings},
  language = {en},
  title = {From KMOC to WQFT in Yang-Mills and gravity},
  publisher = {Perimeter Institute},
  year = {2022},
  month = {nov},
  note = {PIRSA:22110113 see, \url{https://pirsa.org}}
}

Abstract

Recently, powerful quantum field theory techniques, originally developed to calculate observables in colliders, have been applied to describe classical observables relevant to gravitational wave physics. This has motivated a proliferation of approaches to extract classical information from quantum scattering amplitudes. Since the double copy suggests that the basis of the dynamics of general relativity is Yang-Mills theory,  in this talk I will first discuss scattering in Yang-Mills theory as a toy model to study the connection between the framework by Kosower-Maybee-O'Connell (KMOC), the language of effective field theory (EFT) and the eikonal phase. After a brief review of the KMOC formalism to compute classical observables from scattering amplitudes, I will consider the dynamics of colour-charged particle scattering and explain  how to compute the change of colour, and the radiation of colour, during a classical collision. Finally, moving on to gravity, I will discuss the deflection of light by a massive spinless/spinning object using the novel worldline quantum field theory (WQFT) formalism for classical scattering.

Zoom link:  https://pitp.zoom.us/j/98649931693?pwd=Z2s1MlZvSmFVNEFqdjk2dlZNRm9PQT09

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