Use este identificador para citar ou linkar para este item: https://locus.ufv.br//handle/123456789/21720
Tipo: Artigo
Título: No radiative generation of Chern-Simons-like term in Lorentz-violating QED: dealing with IR divergences
Autor(es): Del Cima, O. M.
Franco, D. H. T.
Piguet, O.
Abstract: The issue intensively claimed in the literature on the generation of a CPT-odd and Lorentz violating Chern-Simons-like term by radiative corrections owing to a CPT violating interaction — the axial coupling of fermions with a constant vector field bμ — is mistaken. The presence of massless gauge field triggers IR divergences that might show up from the UV subtractions, therefore, so as to deal with the (actual physical) IR divergences, the Lowenstein-Zimmermann subtraction scheme, in the framework of BPHZL renormalization method, has to be adopted. The proof on the non generation of such a Chern-Simons-like term is done, independent of any kind of regularization scheme, at all orders in perturbation theory.
Palavras-chave: Anomalies in Field and String Theories
BRST Quantization
Renormalization Regularization and Renormalons
Space-Time Symmetries
Editor: Journal of High Energy Physics
Tipo de Acesso: Open Access
URI: https://doi.org/10.1007/JHEP11(2017)011
http://www.locus.ufv.br/handle/123456789/21720
Data do documento: 6-Nov-2017
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