PIRSA:20070026

Analyticity and unitarity's offspring: anomalous dimensions and the space of EFTs

Riembau, M. (2020). Analyticity and unitarity's offspring: anomalous dimensions and the space of EFTs. Perimeter Institute. https://pirsa.org/20070026

Riembau, Marc. Analyticity and unitarity's offspring: anomalous dimensions and the space of EFTs. Perimeter Institute, Jul. 14, 2020, https://pirsa.org/20070026 

          @misc{ pirsa_PIRSA:20070026,
            doi = {10.48660/20070026},
            url = {https://pirsa.org/20070026},
            author = {Riembau, Marc},
            keywords = {Particle Physics},
            language = {en},
            title = {Analyticity and unitarity{\textquoteright}s offspring: anomalous dimensions and the space of EFTs},
            publisher = {Perimeter Institute},
            year = {2020},
            month = {jul},
            note = {PIRSA:20070026 see, \url{https://pirsa.org}}
          }

Marc Riembau University of Geneva (UNIGE) - Department of Theoretical Physics

DOI 10.48660/20070026
Collection
Talk Type Scientific Series
Subject

Abstract

In the first part of the talk I will present how to compute anomalous dimensions of EFT operators using on-shell scattering amplitudes. The method is used to compute some two loop transitions, which are important to provide a complete characterisation of the dynamics affecting some low energy precision experiments. In the second part, I show how unitarity, analycity and locality impose stringent non-trivial constraints to the space of possible EFTs, invisible at the Lagrangian level by only considering the symmetries of the IR theory.