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Subleading correction to the gluon propagator in large $N$ expansion
I was reading Callan, Coote and Gross' paper on 2-dimensional QCD, where they show that the model that 't Hooft proposes in his work indeed produces quark confinement. In section VIII, they analyze ...
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double line notation (three and four gluon vertices) - how is this a simplification?
This is closely related to my previous post Double line notation - gluon propagator
I'm trying to understand the double-line vertices for the gluon in the case of a $U(N)$ gauge group. Normally, the ...
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