The Energy-Momentum Tensor in Scalar and Gauge Field Theories
May, 1974
43 pages
Published in:
- Annals Phys. 87 (1974) 354
Report number:
- Print-74-0990 (STONY BROOK)
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Abstract: (Elsevier)
A previous study of the energy-momentum tensor in ϕ 4 theory and spontaneously broken non-Abelian gauge field theories is extended here to show finiteness to all orders in perturbation theory. Divergences of Green's functions Γ μν ( j ) ( q ; p 1 , …, p j ) involving the energy-momentum tensor θ μν and j particle fields are removed by counterterms of the ordinary Lagrangian plus a renormalization of the coefficient of the Callan-Coleman-Jackiw improvement term in θ μν . Physically the extra renormalization means that the mean square “mass radius” of elementary spin zero particles must be specified from experiment.References(11)
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