PIRSA:23020060

A UV/EFT Correspondence for Cosmology

Melville, S. (2023). A UV/EFT Correspondence for Cosmology. Perimeter Institute. https://pirsa.org/23020060

Melville, Scott. A UV/EFT Correspondence for Cosmology. Perimeter Institute, Feb. 22, 2023, https://pirsa.org/23020060 

          @misc{ pirsa_PIRSA:23020060,
            doi = {10.48660/23020060},
            url = {https://pirsa.org/23020060},
            author = {Melville, Scott},
            keywords = {Quantum Gravity},
            language = {en},
            title = {A UV/EFT Correspondence for Cosmology},
            publisher = {Perimeter Institute},
            year = {2023},
            month = {feb},
            note = {PIRSA:23020060 see, \url{https://pirsa.org}}
          }

Scott Melville

University of Cambridge

Talk number
PIRSA:23020060
Collection
Talk Type
Subject
Abstract

Experimental searches for new fundamental physics are increasingly adopting an Effective Field Theory (EFT) approach, in which the phenomenological effects of the underlying high-energy (UV) physics are parametrised by a series of EFT coefficients that can be readily compared with data.
While pragmatically useful, this begs the question: what UV information can be extracted from our measurements of these EFT coefficients?
In this talk, I will describe how scattering amplitudes techniques ("sum rules") can establish precise connections between EFT coefficients and the underlying UV physics.
In particular, I will focus on recent progress in applying these techniques in cosmology, where they have been used to connect our large-scale measurements of dark energy, gravitational waves and the CMB with properties of the underlying UV completion.

Zoom Link: https://pitp.zoom.us/j/99740767444?pwd=OTMxWlVDYitSTXdKdmlFRWxhdGl1dz09