Physical (ir)relevance of ambiguities to Lorentz and CPT violation in QED | Zendy

M. Pérez-Victoria | Zendy

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Physical (ir)relevance of ambiguities to Lorentz and CPT violation in QED

Author(s) -

M. Pérez-Victoria

Publication year - 2001

Publication title -

journal of high energy physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.998

H-Index - 261

eISSN - 1126-6708

pISSN - 1029-8479

DOI - 10.1088/1126-6708/2001/04/032

Subject(s) - physics , cpt symmetry , lorentz transformation , renormalization , regularization (linguistics) , mathematical physics , chern–simons theory , gauge theory , homogeneous space , term (time) , dimensional regularization , lorentz covariance , quantum electrodynamics , theoretical physics , particle physics , quantum mechanics , mathematics , philosophy , geometry , linguistics

We discuss the regularization and renormalization of QED with Lorentz and CPTviolation, and argue that the coefficient of the Chern-Simons term is anindependent parameter not determined by gauge invariance. We also study theseissues in a model with spontaneous breaking of Lorentz and CPT symmetries andfind an explicit relation with the ABJ anomaly. This explains the observedconvergence of the induced Chern-Simons term.Comment: 16 pages, references adde

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