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14 April 2021
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SCIENCE-ADVISOR - review - "Interesting approach to quantum gauge in..." review 06030040 (4 readers)    * Rate this comment.
Article reference: Non-abelian gauge theories as a consequence of perturbative quantum gauge invariance.
Review title: Interesting approach to quantum gauge invariance
Reviewer: reviewer163
Date: 17 March 2006 at 21:32 GMT.
Read this article?: New insight in the structure of gauge theories

The article of Andreas Aste and Guenter Scharf is a kind of inversion of 't Hooft's proof that gauge theories are renormalizable - presupposing that Lorentz symmetry, gauge invariance/unitary and renormalizability hold (very basic requirements), the authors show that in the case of massless fields, a gauge theory automatically emerges. They introduce the free field version of the Becchi-Rouet-Stora transformation, which has a much simpler structure than the full BRS transformation, and show that this very simple transformation contains the full information about the interacting theory. It is astonishing that these 'simple' observations have not been found in the early times of the development of gauge field theories.

important: 4,    broad interest: 5,    readable: 3,    new: 4,    correct: 5,   Global: 5
Article rating: 4.33/5
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