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Tunable axion plasma haloscopes

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arxiv 1904.11872 v2 pith:CR2ZJ465 submitted 2019-04-26 hep-ph hep-exphysics.ins-det

Matthew Lawson , Alexander J. Millar , Matteo Pancaldi , Edoardo Vitagliano , Frank Wilczek This is my paper
classification hep-phhep-exphysics.ins-det
keywords plasmaaxionfrequencyconversionhaloscopesmassestunableadvantage
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We propose a new strategy to search 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 $35-400\,\mu$eV, at least.

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Cited by 5 Pith papers

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