Communications in Mathematical Physics

, Volume 153, Issue 2, pp 245–276 | Cite as

Perturbative renormalization of composite operators via flow equations II: Short distance expansion

  • G. Keller
  • C. Kopper
Article

Abstract

We give a rigorous and very detailed derivation of the short distance expansion for a product of two arbitrary composite operators in the framework of the perturbative Euclidean massiveΦ 4 4 . The technically almost trivial proof rests on an extension of the differential flow equation method to Green functions with bilocal insertions, for which we also establish a set of generalized Zimmermann identities and Lowenstein rules.

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Copyright information

© Springer-Verlag 1993

Authors and Affiliations

  • G. Keller
    • 1
  • C. Kopper
    • 2
  1. 1.Max-Planck-Institut für PhysikWerner-Heisenberg-InstitutMünchen 40Germany
  2. 2.Institut für Theoretische PhysikUniversität GöttingenGöttingenGermany

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