Chern-Simons like term generation in an extended model of QED under external conditions
arXiv:hep-th/0401241 · doi:10.1103/PhysRevD.70.025003
Abstract
The possibility of a Chern-Simons like term generation in an extended model of QED, in which a Lorentz and CPT non-covariant interaction term for fermions is present, has been investigated at finite temperature and in the presence of a background color magnetic field. To this end, the photon polarization operator in an external constant axial-vector field has been considered. One-loop contributions to its antisymmetric component due to fermions in the linear order of the axial-vector field have been obtained. Moreover, the first nontrivial correction to the induced CS term due to the presence of a weak constant homogeneous color magnetic field has been derived.
arXiv commentRevTex, 10 pages with 3 figures
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