Master functional and proper formalism for quantum gauge field theory

  title={Master functional and proper formalism for quantum gauge field theory},
  author={Damiano Anselmi},
  journal={The European Physical Journal C},
  • D. Anselmi
  • Published 17 May 2012
  • Mathematics, Physics
  • The European Physical Journal C
We develop a general field-covariant approach to quantum gauge theories. Extending the usual set of integrated fields and external sources to “proper” fields and sources, which include partners of the composite fields, we define the master functional Ω, which collects one-particle irreducible diagrams and upgrades the usual Γ-functional in several respects. The functional Ω is determined from its classical limit applying the usual diagrammatic rules to the proper fields. Moreover, it behaves as… Expand
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