Vacuum contribution of photons in the theory with Lorentz and CPT-violating terms

Abstract

The photon contribution to the divergences and conformal anomaly in the theory with Lorentz and CPT-violating terms is evaluated. We calculate one-loop counterterms coming from the integration over electromagnetic field and check that they possess local conformal invariance. Furthermore, conformal anomaly and anomaly-induced effective action are calculated. It turns out that the new terms do not affect the dynamics of conformal factor in the anomaly-driven inflation (Starobinsky model) and its extensions. At the same time, one can expect these terms to affect gravitational wave equation and, in general, cosmic perturbations.

15 pages

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Cited by in corpus (3)

• Counting ghosts in the "ghost-free" non-local gravity
• Renormalizability of Yang-Mills theory with Lorentz violation and gluon mass generation
• The Exact Foldy-Wouthuysen Transformation for a Dirac Theory with the complete set of CPT-Lorentz violating terms