2 papers
hep-ph2026
Natural Phantom Crossing from Axion-WIMP Interactions
Cédric Delaunay, Seung J. Lee, Yuan Yin +1
We construct a technically natural model in which thermal dark matter (DM) interacts with axion dark energy (DE) and produces an apparent late-time crossing of the phantom divide.…
hep-ph2025
Probing New Forces with Nuclear Clocks
Cédric Delaunay, Seung J. Lee, Roee Ozeri +3
Clocks based on nuclear isomer transitions promise exceptional stability and precision. The low transition energy of the thorium-229 isomer makes it an ideal candidate, as it has b…