# Electromagnetic angular momentum of the electron: One-loop studies

## TL;DR

This paper investigates the electromagnetic angular momentum of the electron within quantum electrodynamics, demonstrating a finite one-loop result without renormalization and comparing it to classical estimates.

## Contribution

It provides a novel one-loop calculation of the electron's electromagnetic angular momentum without renormalization in QED.

## Key findings

- Finite one-loop electromagnetic angular momentum obtained
- Comparison with classical short-distance cutoff estimate
- No renormalization procedure needed for the result

## Abstract

We study angular momentum of the electron stored in its electric and magnetic fields. We use for this purpose quantum electrodynamics in the covariant gauge. We show that a finite one-loop result for such angular momentum can be obtained without invoking any renormalization procedure. We compare it to the classical estimation relying on a short-distance cutoff.