Axion Decay of a Photon in an External Electromagnetic Field

Abstract

An interaction of a pseudoscalar particle with two photons induced by an external electromagnetic field is used to study the photon decay $\gamma \to \gamma a$ 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.

7 pages, latex, 1 PS figure

References in corpus (3)

• Axion decay $a\to f\tilde{f}$ in a strong magnetic field
• Electromagnetic Catalysis of the Radiative Decay of the Axion
• $a\to e^{+}{e}^{-}$ decay in a model with induced coupling to leptons