# Damping self-forces and Asymptotic Symmetries

## TL;DR

This paper explores how damping self-forces influence asymptotic symmetries and charges in radiating processes, linking classical energy conservation with soft theorems and infrared effects.

## Contribution

It introduces a framework connecting damping self-forces to asymptotic charges and symmetries, extending the understanding of energy conservation in radiating systems.

## Key findings

- Charges are conserved in zero-radiation scattering processes.
- Damping forces relate to sub-leading soft theorems.
- Infrared scale dependence in QED affects differential cross sections.

## Abstract

Energy conservation in radiating processes requires, at the classical level, to take into account damping forces on the sources. These forces can be represented in terms of asymptotic data and lead to charges defined as integrals over the asymptotic boundary. For scattering processes these charges, in case of zero radiated energy, are conserved and encode the information about the sub-leading soft theorems and matching conditions. The QED version of the self forces is associated with the dependence of the differential cross section on the infrared resolution scale.