A piezoelectric quartz resonator could detect dark photon dark matter through resonant phonon excitation, with projected sensitivity orders of magnitude beyond current experiments.
Probing dark photons with plasma haloscopes
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abstract
Dark photons (DPs) produced in the early Universe are well-motivated dark matter (DM) candidates. We show that the recently proposed tunable plasma haloscopes are particularly advantageous for DP searches. While in-medium effects suppress the DP signal in conventional searches, plasma haloscopes make use of metamaterials that enable resonant absorption of the DP by matching its mass to a tunable plasma frequency and thus enable efficient plasmon production. Using thermal field theory, we confirm the in-medium DP absorption rate within the detector. This scheme allows to competitively explore a significant part of the DP DM parameter space in the DP mass range of $6-400$ $\mu$eV. If a signal is observed, the observation of a daily or annual modulation of the signal would be crucial to clearly identify the signal as due to DP DM and could shed light on the production mechanism.
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Piezoelectric Bulk Acoustic Resonators For Dark Photon Detection
A piezoelectric quartz resonator could detect dark photon dark matter through resonant phonon excitation, with projected sensitivity orders of magnitude beyond current experiments.