Radiative generation of the CPT-even gauge term of the SME from a dimension-five nonminimal coupling term

Feb 10, 2013
5 pages
Published in:
  • Phys.Lett.B 726 (2013) 815-819
  • Published: Nov 4, 2013
e-Print:

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Abstract: (Elsevier)
In this Letter we show for the first time that the usual CPT-even gauge term of the Standard Model Extension (SME), in its full structure, can be radiatively generated, in a gauge invariant level, in the context of a modified QED endowed with a dimension-five nonminimal coupling term recently proposed in the literature. As a consequence, the existing upper bounds on the coefficients of the tensor (KF) can be used to improve the bounds on the magnitude of the nonminimal coupling, λ(KσF) , by the factors 10 5 or 10 25 . The nonminimal coupling also generates higher-order derivative contributions to the gauge field effective action quadratic terms.
Note:
  • Revtex style, two columns, 6 pages, revised final version to be published in the Physics Letters B (2013)
  • 11.30.Er
  • 11.15.Tk
  • 11.30.Cp
  • 11.10.Gh
  • coupling: nonminimal
  • invariance: gauge
  • gauge field theory: effective action
  • symmetry: discrete
  • quantum electrodynamics
  • charge conjugation