Axion-photon transition (radiation) caused by dielectric interfaces in a magnetic field: QFT approach

  • July 11, 2017, 2:00 pm
  • Wilson Hall, Curia II
  • Ara Ioannisyan, Yerevan Physics Institute, Armenia
  • InSPIRE profile
Axion-photon transition/conversion at dielectric interfaces, immersed in a near-homogeneous magnetic field, is the basis for the dielectric haloscope method to search for axion dark matter. In analogy to transition radiation, this process is possible because the photon wave function is modified by the dielectric layers (“Garibian wave function”) and is no longer an eigenstate of momentum. A conventional first-order perturbative calculation of the transition probability between a quantized axion state and these distorted photon states provides the microwave production rate.