The Gluon Condensate and Running Coupling of QCD

Details The Gluon Condensate and Running Coupling of QCD The Gluon Condensate and Running Coupling of QCD

1995-02-16

arxiv.org/abs/hep-ph/9502326v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, RevTex, No figures

Scientific paper

An expression for the photon condensate in quantum electrodynamics is presented and generalized to deduce a simple relation between the gluon condensate and the running coupling constant of quantum chromodynamics (QCD). Ambiguities in defining the condensates are discussed. The values of the gluon condensate from some Ans\"{a}tze for the running coupling in the literature are compared with the value determined from QCD sum rules.

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