# Asymptotic Symmetries for Logarithmic Soft Theorems

- Institution: CERN
- Department: Conferences, Workshops & Schools
- Speaker: Andrea Puhm
- Year: 2024
- Language: English
- Source: [CERN](https://videos.cern.ch/record/3012762)
- Licence: [CERN](http://copyright.web.cern.ch)
- Who can watch: Teens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

Gauge theories and perturbative gravity in four dimensions are governed by a tower of infinite-dimensional symmetries that arise from tree-level soft factorization theorems of the S-matrix. However, aside from the leading soft theorems which are all-loop exact, subleading ones receive loop corrections due to long-range infrared effects which result in new soft theorems with logarithmic dependence on the energy of the soft particle. In this talk I will initiate a program to compute long-range infrared corrections to the generators of asymptotic symmetries in scalar QED and gravity and show how the conservation law of the infrared corrected charges provides a symmetry interpretation for the leading logarithmic soft theorems. By virtue of being universal and all-loop exact, this is a key element for a holographic principle in spacetimes with flat asymptotics..

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## Lectures

1. [Asymptotic Symmetries for Logarithmic Soft Theorems](https://invisiblenetwork.ai/learn/cern/3012762/8caba72e0829), 33 min (CERN's player)