Gauge Fixing Identity in the Background Field Method of QCD in Pure Gauge
نویسنده
چکیده
Gouranga C Nayak ∗ 1 Department of Physics, University of Arizona, Tucson, AZ 85721, USA Abstract In this paper we derive a gauge fixing identity by varying the covariant gauge fixing term in Z[A, J, η, η̄] in the background field method of QCD in pure gauge. Using this gauge fixing identity we establish a relation between Z[J, η, η̄] in QCD and Z[A, J, η, η̄] in background field method of QCD in pure gauge. We show the validity of this gauge fixing identity in general non-covariant and general Coulomb gauge fixings respectively. This gauge fixing identity is used to prove factorization theorem in QCD at high energy colliders and in non-equilibrium QCD at high energy heavy-ion colliders.
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