Lorentz and CPT symmetries in commutative and noncommutative spacetime

Details Lorentz and CPT symmetries in commutative and noncommutative spacetime Lorentz and CPT symmetries in commutative and noncommutative spacetime

2003-03-13

arxiv.org/abs/hep-th/0303122v1

J.Phys.A36:4937,2003

Physics

High Energy Physics

High Energy Physics - Theory

RevTex4, 7 pages, to be published in J. Phys. A

Scientific paper

10.1088/0305-4470/36/17/319

We investigate the fermionic sector of a given theory, in which massive and charged Dirac fermions interact with an Abelian gauge field, including a non standard contribution that violates both Lorentz and CPT symmetries. We offer an explicit calculation in which the radiative corrections due to the fermions seem to generate a Chern-Simons-like effective action. Our results are obtained under the general guidance of dimensional regularization, and they show that there is no room for Lorentz and CPT violation in both commutative and noncommutative spacetime.

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