On the renormalization of CPT/Lorentz violating QED in curved space
Abstract
We consider the one-loop renormalization of QED in curved space-time with additional Lorentz and/or CPT breaking terms. The renormalization group equations in the vacuum sector are derived. In the special case of Minkowski metric and with constant Lorentz and CPT breaking terms these equations reduce to the ones obtained earlier by other authors. The necessary form of the vacuum counterterms indicate possible violations of the space or time homogeneity or space isotropy in the gravitational phenomena. However, the necessity of the phenomenologically most interesting terms such as linear in the space-time curvature or torsion, is related to the non-constant nature of the dimensionless Lorentz and CPT breaking parameters.
- Publication:
-
Physics Letters B
- Pub Date:
- November 2006
- DOI:
- 10.1016/j.physletb.2006.08.077
- arXiv:
- arXiv:hep-th/0607109
- Bibcode:
- 2006PhLB..642..153D
- Keywords:
-
- CPT and Lorentz violation;
- Curved space;
- Renormalization;
- 04.62.+v;
- 12.90.+b;
- Quantum field theory in curved spacetime;
- Miscellaneous theoretical ideas and models;
- High Energy Physics - Theory
- E-Print:
- 11 pages, LaTeX file. Minor improvements and new references added. Accepted in Physics Letters B