Center for Theoretical Physics of the Universe (CTPU)

Detecting Light Boson Dark Matter through Conversion into Magnon

by Dr. So Chigusa (KEK)

Wednesday, 20 May 2020 from to (Asia/Seoul)
at On-line
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.