Finiteness of the Coulomb gauge QCD perturbative effective action

Apr 16, 2015
17 pages
Published in:
  • Annals Phys. 356 (2015) 352-368
  • Published: May, 2015
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Abstract: (Elsevier)
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.
Note:
  • Accepted in Annals of Physics
  • QCD
  • Coulomb gauge
  • Effective action
  • external field: transverse
  • effective action
  • Coulomb gauge
  • quantum chromodynamics
  • Feynman graph
  • Hamiltonian