# On electromagnetic and colour memory in even dimensions

## TL;DR

This paper investigates electromagnetic and color memory effects in even-dimensional spacetimes, analyzing classical and quantum memory phenomena, and explores the asymptotic symmetries of Maxwell's theory across dimensions.

## Contribution

It extends the study of memory effects and asymptotic symmetries to arbitrary even and odd dimensions, including quantum memory modifications.

## Key findings

- Classical memory effects cause permanent velocity kicks.
- Quantum memory effects alter phase configurations of probes.
- Asymptotic symmetries are characterized in various dimensions.

## Abstract

We explore memory effects associated to both Abelian and non-Abelian radiation getting to null infinity, in arbitrary even spacetime dimensions. Together with classical memories, linear and non-linear, amounting to permanent kicks in the velocity of the probes, we also discuss the higher-dimensional counterparts of quantum memory effects, manifesting themselves in modifications of the relative phases describing a configuration of several probes. In addition, we analyse the structure of the asymptotic symmetries of Maxwell's theory in any dimension, both even and odd, in the Lorenz gauge.