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Title: Finiteness of the Coulomb gauge QCD perturbative effective action

At 2-loop order in the Coulomb gauge, individual Feynman graphs contributing to the effective action have energy divergences. It is proved that these cancel in suitable combinations of graphs. This has previously been shown only for transverse external fields. The calculation results in a generalization of the Christ–Lee term which was inserted into the Hamiltonian.
Authors:
 [1] ;  [2]
  1. Vlaška 58, Zagreb (Croatia)
  2. DAMTP, University of Cambridge, Cambridge (United Kingdom)
Publication Date:
OSTI Identifier:
22451173
Resource Type:
Journal Article
Resource Relation:
Journal Name: Annals of Physics; Journal Volume: 356; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ACTION INTEGRAL; GRAPH THEORY; HAMILTONIANS; QUANTUM CHROMODYNAMICS