 ##  [Quantum Field Theory](/quantum-field-theory) 

  ##  [Quantum Field Theory](https://natural.quantumdictionary.io/quantum-field-theory-0) 

  
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**Natural &amp; Formal Sciences Dictionary**

 
Definition

A framework that merges quantum mechanics and special relativity by treating fields as the fundamental dynamical variables whose quantized excitations correspond to particles; interactions are specified by field Lagrangians or Hamiltonians and analyzed by operator methods or path integrals with renormalization to handle divergences.