Chern-Simons - like term generation in an extended model of QED under external conditions

Jan, 2004
10 pages
Published in:
  • Phys.Rev.D 70 (2004) 025003
e-Print:

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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