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On perturbative aspects of a nonminimal Lorentz-violating QED with CPT-odd dimension-5 terms

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arxiv 2104.05681 v2 pith:THES7HNS submitted 2021-04-12 hep-th

T. Mariz , R. Martinez , J. R. Nascimento , A. Yu. Petrov This is my paper · ORCID
classification hep-th
keywords nonminimalcpt-odddimension-5lorentz-violatingtermtermsadditiveaspects
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We consider the Lorentz-violating extended QED involving all nonminimal dimension-5 additive CPT-odd terms. For this theory, we investigate the possibility of generating the Carroll-Field-Jackiw (CFJ) term of the first order in any of these nonminimal couplings. This term is demonstrated to vanish in certain regularization schemes. We also study the question of higher-derivative divergent contributions and demonstrate that they can be eliminated by considering a given proportionality between the coefficients.

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  1. Vacuum Cherenkov radiation for nonminimal dimension-5 Lorentz violation

    hep-ph 2025-08 conditional novelty 6.0 of 10

    Isotropic dimension-5 Lorentz violation in fermions is constrained to below 1e-18 GeV^-1 (proton, m-type) and 3e-28 GeV^-1 (proton, a-type) by the absence of vacuum Cherenkov radiation in cosmic rays.

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