Lorentz andviolating Chern-Simons term in the derivative expansion of QED
- 11 August 1999
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 60 (6), 067702
- https://doi.org/10.1103/physrevd.60.067702
Abstract
We calculate, by the method of dimensional regularization and derivative expansion, the one-loop effective action for a Dirac fermion with a Lorentz-violating and -odd kinetic term in the background of a gauge field. We show that this term induces a Chern-Simons modification to Maxwell theory. Some related issues are also discussed.
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