The energy-momentum tensor for lattice gauge theories

We show how to construct the energy-momentum tensor for lattice gauge theories by imposing the validity of the Ward identities related to the conservation of this tensor. Such a procedure is carried out both at the perturbative and non-perturbative level, and the one-loop calculation for QED is give...

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Bibliographic Details
Published in:Annals of physics 1990, Vol.197 (1), p.119-153
Main Authors: Caracciolo, Sergio, Curci, Giuseppe, Menotti, Pietro, Pelissetto, Andrea
Format: Article
Language:English
Subjects:
Exact sciences and technology
Physics
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Summary:We show how to construct the energy-momentum tensor for lattice gauge theories by imposing the validity of the Ward identities related to the conservation of this tensor. Such a procedure is carried out both at the perturbative and non-perturbative level, and the one-loop calculation for QED is given. We then clarrify how the correct scale anomaly is recovered on the lattice.
ISSN:0003-4916
1096-035X
DOI:10.1016/0003-4916(90)90203-Z