PIRSA:22120056

Geometry in Scattering Amplitudes

APA

Helset, A. (2022). Geometry in Scattering Amplitudes. Perimeter Institute. https://pirsa.org/22120056

MLA

Helset, Andreas. Geometry in Scattering Amplitudes. Perimeter Institute, Dec. 09, 2022, https://pirsa.org/22120056

BibTex

          @misc{ pirsa_22120056,
            doi = {10.48660/22120056},
            url = {https://pirsa.org/22120056},
            author = {Helset, Andreas},
            keywords = {Particle Physics, Quantum Fields and Strings},
            language = {en},
            title = {Geometry in Scattering Amplitudes},
            publisher = {Perimeter Institute},
            year = {2022},
            month = {dec},
            note = {PIRSA:22120056 see, \url{https://pirsa.org}}
          }
          

Andreas Helset California Institute of Technology (Caltech)

Abstract

One central property of the S-matrix is its invariance under field redefinitions. I will discuss how the geometry of field space makes this invariance manifest. This geometric formulation also has practical consequences. Scattering amplitudes and the renormalization group equations for a theory of scalars and gauge bosons only depend on geometric quantities. Also, the scattering amplitudes satisfy a geometric soft theorem.

Zoom link:  https://pitp.zoom.us/j/98973018515?pwd=MFJFSGM4RS9KRHFOREFBc1gvWXYwQT09