Radiatively induced Lorentz and CPT violation in electrodynamics

Jan, 1999
4 pages
Published in:
  • Phys.Rev.Lett. 82 (1999) 3572-3575
e-Print:
Report number:
  • IUHET-400,
  • MIT-CTP-2812

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Abstract:
In a nonperturbative formulation, radiative corrections arising from Lorentz and CPT violation in the fermion sector induce a definite and nonzero Chern-Simons addition to the electromagnetic action. If instead a perturbative formulation is used, an infinite class of theories characterized by the value of the Chern-Simons coefficient emerges at the quantum level.
  • quantum electrodynamics
  • fermion
  • radiation
  • violation: Lorentz
  • violation: CPT
  • Chern-Simons term