Quantum electrodynamics Lagrangian

ID: quantum-electrodynamics-lagrangian

where:
Note that this is the sum of the:
Note that the relationship between and is not explicit. However, if we knew what type of particle we were talking about, e.g. electron, then the knowledge of psi would also give the charge distribution and therefore
Video 1.
Particle Physics is Founded on This Principle! by Physics with Elliot (2022)
Source.

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