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Chiral Symmetry Breaking and Perturbative QCD

Authors
  • Broadhurst, David J.
Publication Date
Jan 01, 1981
Identifiers
DOI: 10.1016/0370-2693(81)90167-2
OAI: oai:inspirehep.net:170867
Source
INSPIRE-HEP
Keywords
License
Unknown
External links

Abstract

Exact results are given for the propagators of axial and vector divergences at the two-loop level of dimensionally regularized quantum chromodynamics. We prove that any combination of propagators that vanishes at zero momentum by virtue of Ward identifies is free of subtractions and satisfies a superconvergence relation. Sum rules for other combinations will, however, involve unknown non-perturbative constants.

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