Phys. Rev. Lett. 83, 2518–2521 (1999)Exact Calculation of the Radiatively Induced Lorentz and CPT Violation in QEDReceived 27 May 1999; published in the issue dated 27 September 1999 Radiative corrections arising from the axial coupling of charged fermions to a constant vector bμ can induce a Lorentz- and CPT-violating Chern-Simons term in the QED action. We calculate the exact one-loop correction to this term keeping the full bμ dependence, and show that in the physically interesting cases it coincides with the lowest-order result. The effect of regularization and renormalization and the implications of the result are briefly discussed. © 1999 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.83.2518
DOI:
10.1103/PhysRevLett.83.2518
PACS:
11.30.Cp, 11.30.Er, 11.30.Qc, 12.15.Lk
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