NPA Zoom Seminar, Xiaoyue Li, Max Planck Institute, "Searching for axion dark matter with the dielectric haloscope MADMAX"
Axions emerge naturally from the Peccei-Quinn (PQ) mechanism which addresses the absence of CP violation in QCD; the axions produced through the “vacuum realignment mechanism” are also a good cold dark matter (CDM) candidate. Traditional cavity haloscope experiments such as ADMX and HAYSTAC have focused on the ~1-10 µeV mass range, leaving the theoretically well motivated mass range of ~100 µeV unexplored.