Cancellation of energy-divergences in Coulomb gauge QCD

Details Cancellation of energy-divergences in Coulomb gauge QCD Cancellation of energy-divergences in Coulomb gauge QCD

2005-03-11

arxiv.org/abs/hep-th/0503099v2

Eur.Phys.J.C41:377-380,2005

Physics

High Energy Physics

High Energy Physics - Theory

8 pages, 3 figures, revised version, two references added; accepted for publication in EPJC

Scientific paper

10.1140/epjc/s2005-02239-4

In the Coulomb gauge of nonabelian gauge theories there are in general, in individual graphs, 'energy-divergences' on integrating over the loop energy variable for fixed loop momentum. These divergences are avoided in the Hamiltonian, phase-space formulation. But, even in this formulation, energy-divergences re-appear at 2-loop order. We show in an example how these cancel between graphs as a consequence of Ward identities.

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