Chern-Simons - like term generation in an extended model of QED under external conditions
Jan, 2004Citations per year
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.- 12.60.Cn
- 12.20.Ds
- 11.10.Wx
- 11.30.Qc
- quantum electrodynamics
- Chern-Simons term
- finite temperature
- magnetic field: color
- photon: polarization
- violation: Lorentz
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