Abstract
Infrared divergences of Yang Mills theory are regularized by an explicit mass term for the vector meson. By using the invariance properties under Becchi, Rouet and Stora transformations we demonstrate that the theory violates physical unitarity also in the limit of zero mass.
Seminar presented by R. Ferrari at the conference “Colloquium on Mathematical Problems 1 in Feynman Path Integral” Marseille, May 22–26, 1978.
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The same suggestion comes from the analysis of gauge invariance of transition probabilities: G. Curci and E. d'Emilio, “On Gauge Invariance and Perturbative Calculations in Quantum Chromodynamics”, TH.2582-CERN.
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© 1979 Springer-Verlag
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Curci, G., Ferrari, R. (1979). Infrared problem and zero-mass limit in a model of non-abelian gauge theory. In: Albeverio, S., et al. Feynman Path Integrals. Lecture Notes in Physics, vol 106. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-09532-2_91
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DOI: https://doi.org/10.1007/3-540-09532-2_91
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