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Dielectric Haloscopes to Search for Axion Dark Matter: Theoretical Foundations
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Dielectric Haloscopes to Search for Axion Dark Matter: Theoretical Foundations
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We study the underlying theory of dielectric haloscopes, a new way to detect dark matter axions. When an interface between different dielectric media is inside a magnetic field, the oscillating axion field acts as a source of electromagnetic waves, which emerge in both directions perpendicular to the surface. The emission rate can be boosted by multiple layers judiciously placed to achieve constructive interference and by a large transverse area. Starting from the axion-modified Maxwell equations, we calculate the efficiency of this new dielectric haloscope approach. This technique could potentially search the unexplored high-frequency range of 10--100 GHz (axion mass 40--400 $\mu$eV), where traditional cavity resonators have difficulties reaching the required volume.
Forward citations
Cited by 6 Pith papers
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Searching for Dark Photons with a room-temperature dielectric haloscope
No excess in 904 h of stack-on data yields a 90% CL limit κ < 4.0×10^{-13} for 1.9 eV/c² dark-photon dark matter with a template-calibrated dielectric-CMOS haloscope.
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Comment on the preprint: First Limits on Axion Dark Matter from a DALI Prototype arXiv:2603.21951
Idealized COMSOL modeling of the reported DALI plate stack yields only resonances with negligible axion form factors, so the claimed ALP sensitivity cannot be reproduced.
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DALI sensitivity to streaming axion dark matter
DALI has sensitivity to axion streams spanning two decades in mass that matches photon coupling strengths of representative axion models.
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Axions at the meV Crossroads: Theory, Cosmology, Astrophysics, and Experiments
The meV axion window is presented as a coherent, cross-validated search program in which string theory, stellar cooling, dark matter, and new detector concepts converge on the same mass range.
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Axions as Dark Matter, Dark Energy, and Dark Radiation
A mini-review of axion phenomenology showing how light bosons can account for dark matter, drive cosmic acceleration, or contribute to relativistic backgrounds in the early and late Universe.
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