Axion Decay of a Photon in AN External Electromagnetic Field

  title={Axion Decay of a Photon in AN External Electromagnetic Field},
  author={Nickolay V. Mikheev and Alexander Ya. Parkhomenko and Lund University and Russia.},
  journal={Modern Physics Letters A},
An interaction of a pseudoscalar particle with two photons induced by an external electromagnetic field is used to study the photon decay γ→γa where a is a pseudoscalar particle associated with the Peccei–Quinn U(1) symmetry. The field-induced axion emission by photon is analyzed as a possible source of energy losses by astrophysical objects. 
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