Mixing of operators in Wilson expansions |
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Authors: | S. Sarkar |
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Affiliation: | CERN, Geneva, Switzerland |
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Abstract: | The tree-loop theorem of 't Hooft and Veltman is used in Fermi type gauges to show that gauge invariant operators in Wilson expansions mix in general with non-gauge invariant operators. Background field gauges are proposed in which this does not occur. Calculations of anomalous dimensions in these gauges are discussed. |
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