Star Products and Perturbative Quantum Field Theory

  • Allen C. Hirshfeld, Peter Henselder
  • Published 2008


We discuss the deformation quantization approach to perturbative quantum field theory. The various forms of Wick’s theorem are shown to be a direct consequence of the structure of the star products. The scattering function for a scalar field in interaction with a spacetime-dependent source is derived. The translation of the results to the operator formalism… (More)


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