Perturbative and Non-Perturbative Quarks and Gluons

Abstract

BRST invariance supplies a sufficient condition for the observability of fields. We show that there is a global obstruction to the observability of quarks and gluons and argue that they will not become observables at finite temperature. We give expressions for quarks and gluons that are, however, {\it perturbatively\/} BRST invariant, and hence locally observable, up to order~$g^2$ and~$g$ respectively.

11 pages, TeX preprint no. MZ-TH/94-07 and PLY-MS-94-06

References in corpus (2)

• A New Symmetry for QED
• On the Physical Propagators of QED

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