 ##  [Quantum Electrodynamics](/quantum-electrodynamics) 

  ##  [Quantum Electrodynamics](https://natural.quantumdictionary.io/quantum-electrodynamics-0) 

  
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**Natural &amp; Formal Sciences Dictionary**

 
Definition

The relativistic quantum field theory describing the interaction between charged fermions and the electromagnetic field, in which the electromagnetic potential is a quantized field and interactions are mediated by exchange of photons; formulated as a U(1) gauge theory with well-established perturbative and renormalization procedures.