Renormalization of Wilson Operators in Minkowski space

Physics – High Energy Physics – High Energy Physics - Theory

Scientific paper

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plain tex, 8 pages, 5 figures not included

Scientific paper

10.1016/S0550-3213(97)00769-4

We make some comments on the renormalization of Wilson operators (not just vacuum -expectation values of Wilson operators), and the features which arise in Minkowski space. If the Wilson loop contains a straight light-like segment, charge renormalization does not work in a simple graph-by-graph way; but does work when certain graphs are added together. We also verify that, in a simple example of a smooth loop in Minkowski space, the existence of pairs of points which are light-like separated does not cause any extra divergences.

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