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Feynman rules for Coulomb gauge QCD (CROSBI ID 192264)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Andraši, Anđelka ; Taylor, John Clayton Feynman rules for Coulomb gauge QCD // Annals of physics, 327 (2012), 10; 2591-2603. doi: 10.1016/j.aop.2012.05.011

Podaci o odgovornosti

Andraši, Anđelka ; Taylor, John Clayton

engleski

Feynman rules for Coulomb gauge QCD

The Coulomb gauge in nonabelian gauge theories is attractive in principle, but beset with technical difficulties in perturbation theory. In addition to ordinary Feynman integrals, there are, at 2-loop order, Christ–Lee (CL) terms, derived either by correctly ordering the operators in the Hamiltonian, or by resolving ambiguous Feynman integrals. Renormalization theory depends on the sub-graph structure of ordinary Feynman graphs. The CL terms do not have a sub-graph structure. We show how to carry out renormalization in the presence of CL terms, by re-expressing these as ‘pseudo-Feynman’ integrals. We also explain how energy divergences cancel.

nonabelian gauge theory; Coulomb gauge; renormalization; Feynman rule; Christ-Lee term

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Podaci o izdanju

327 (10)

2012.

2591-2603

objavljeno

0003-4916

10.1016/j.aop.2012.05.011

Povezanost rada

Fizika

Poveznice
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