# Euler–Heisenberg Lagrangian

> effective quantum electrodynamics action for the non-linear dynamics of electromagnetic fields in vacuum

**Wikidata**: [Q5409007](https://www.wikidata.org/wiki/Q5409007)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Euler–Heisenberg_Lagrangian)  
**Source**: https://4ort.xyz/entity/euler-heisenberg-lagrangian