Conformal-covariant Wilson expansion in perturbation theory |
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Authors: | S. Ferrara A.F. Grillo G. Parisi |
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Affiliation: | Laboratori Nazionali del CNEN, Frascati, Italy |
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Abstract: | The Wilson expansion at light-like distances is investigated in perturbation theory. Ward identities for broken conformal symmetry are used; it is found that, for any value of the physical coupling constant, the Wilson expansion is asymptotically conformal covariant provided there exists a non-trivial scale-invariant skeleton theory. |
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