3 papers
hep-ph2025
Dark Matter Nuclear Magnetic Resonance is Sensitive to Dark Photons and the Axion-Photon Coupling
Carl Beadle, Sebastian A. R. Ellis, Jacob M. Leedom +1
We demonstrate that nuclear magnetic resonance based searches for dark matter (DM) have intrinsic and powerful sensitivity to dark photons and the axion-photon coupling. The reason…
hep-ph2024
Resonant Conversion of Wave Dark Matter in the Ionosphere
Carl Beadle, Andrea Caputo, Sebastian A. R. Ellis
We consider resonant wave-like dark matter conversion into low-frequency radio waves in the Earth's ionosphere. Resonant conversion occurs when the dark matter mass and the plasma…
hep-ph2023
Quadratic Coupling of the Axion to Photons
Carl Beadle, Sebastian A. R. Ellis, Jérémie Quevillon +1
We show that the QCD axion couples to the electromagnetic kinetic term at one loop. The result is that if axions make up dark matter, they induce temporal variation of the fine str…