Gauge-invariant energy-momentum tensor for massive QED

Hans Georg Embacher, Gebhard Grübl, and Rainer Patek
Phys. Rev. D 33, 1162 – Published 15 February 1986
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Abstract

For massive QED with a gauge-fixing term a candidate for the energy-momentum tensor is presented. Both cases of scalar and spinor matter fields are treated. The energy-momentum tensor is invariant under the restricted gauge transformations which exist in that model. This property guarantees that the unphysical scalar photons do not contribute to the energy-momentum densities. The difference between the translational generators and the energy-momentum observables is pointed out.

  • Received 4 March 1985

DOI:https://doi.org/10.1103/PhysRevD.33.1162

©1986 American Physical Society

Authors & Affiliations

Hans Georg Embacher, Gebhard Grübl, and Rainer Patek

  • Institut für Theoretische Physik, Universitat Innsbruck, Sillgasse 8, A-6020 Innsbruck, Austria

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Issue

Vol. 33, Iss. 4 — 15 February 1986

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