Center for Theoretical Physics of the Universe (CTPU)

Detecting Light Boson Dark Matter through Conversion into Magnon

by Dr So Chigusa (KEK)



Light boson dark matter such as axion or hidden photon can be resonantly converted into a magnon in a magnetic insulator under the magnetic field, which can be detected experimentally. We provide a quantum mechanical formulation for the magnon event rate and show that the result is consistent with that obtained by a classical calculation. Besides, it is pointed out that the experimental setup of the QUAX proposal for the axion detection also works as a detector of hidden photon dark matter. It has good sensitivity in the mass range around 1 meV, which is beyond astrophysical constraints. This talk is based on my paper arXiv: 2001.10666.