Speaker
Edoardo Vitagliano
Description
We discuss a new strategy for searching for dark matter axions using tunable cryogenic plasmas. Unlike current experiments, which repair the mismatch between axion and photon masses by breaking translational invariance (cavity and dielectric haloscopes), a plasma haloscope enables resonant conversion by matching the axion mass to a plasma frequency. A key advantage is that the plasma frequency is unrelated to the physical size of the device, allowing large conversion volumes. We identify wire metamaterials as a promising candidate plasma, wherein the plasma frequency can be tuned by varying the interwire spacing. For realistic experimental sizes, we estimate competitive sensitivity for axion masses of 35–400 μeV, at least.
Authors
Matthew Lawson
(Stockholm University)
Alexander Millar
(Max Planck Institute for Phyiscs)
Dr
Matteo Pancaldi
(Stockholm University)
Prof.
Frank Wilczek
(Stockholm University)
Edoardo Vitagliano
