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The present status of RF superconducting cavities is given. Electric fields of 3 MV/m are achieved in single cell cavities, in a reproducible manner.
A manifestly covariant and local operator formalism of non‐Abelian gauge theories is successfully formulated on the basis of BRS invariance. By this invariance as a quantum version of local gauge invariance, criteria for physical states and observables are dictated so as to preserve the...
Recent developments in perturbative QCD are reviewed.
This report describes a calculation using superfield Feynman diagrams, to establish that the three‐loop β‐function vanishes in ; N =4; super Yang‐Mills theory. A similar calculation shows that the trace and chiral anomalies in supergravity are members of a supersymmetric multiplet.;