Renormalization Hopf algebras for gauge theories and BRST-symmetries

Details Renormalization Hopf algebras for gauge theories and BRST-symmetries Renormalization Hopf algebras for gauge theories and BRST-symmetries

2010-07-27

arxiv.org/abs/1007.4678v1

Physics

Mathematical Physics

17 pages; uses feynmp.sty. To appear in Proceedings of the Conference "Motives, Quantum Field Theory and Pseudodifferential Op

Scientific paper

The structure of the Connes-Kreimer renormalization Hopf algebra is studied for gauge theories, with particular emphasis on the BRST-formalism. We work in the explicit example of quantum chromodynamics, the physical theory of quarks and gluons. A coaction of the renormalization Hopf algebra is defined on the coupling constants and the fields. In this context, BRST-invariance of the action implies the existence of certain Hopf ideals in the renormalization Hopf algebra, encoding the Slavnov-Taylor identities for the coupling constants.

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