Dimensional regularization in position space and a Forest Formula for Epstein-Glaser renormalization

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Autor/in:
Erscheinungsjahr:
2014
Medientyp:
Text
Schlagworte:
  • Quantum field theory
  • Space-time
  • Quantum fields
  • Gravitation
  • Black Holes (Astronomy)
  • Models
  • Quantum field theory
  • Space-time
  • Quantum fields
  • Gravitation
  • Black Holes (Astronomy)
  • Models
Beschreibung:
  • We reformulate dimensional regularization as a regularization method in position space and show that it can be used to give a closed expression for the renormalized time-ordered products as solutions to the induction scheme of Epstein-Glaser. This closed expression, which we call the Epstein-Glaser Forest Formula, is analogous to Zimmermann's Forest Formula for BPH renormalization. For scalar fields, the resulting renormalization method is always applicable, we compute several examples. We also analyze the Hopf algebraic aspects of the combinatorics. Our starting point is the Main Theorem of Renormalization of Stora and Popineau and the arising renormalization group as originally defined by Stuckelberg and Petermann
Lizenz:
  • info:eu-repo/semantics/restrictedAccess
Quellsystem:
Forschungsinformationssystem der UHH

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oai:www.edit.fis.uni-hamburg.de:publications/cdbf1ba7-8093-4d21-b771-5fdc0a47e294