3 papers
hep-ph2026
Black hole scalar sirens in the Milky Way
Daniel Gavilan-Martin, Olivier Simon, Dhashin Krishna +3
Hypothetical light scalar particles trigger the superradiant instability around spinning black holes (BHs), causing clouds of scalars to grow around the BH. In the presence of suff…
hep-ph2025
Cosmological Limits on Strong Dark Forces
Peter W. Graham, Harikrishnan Ramani, Olivier Simon +1
We showcase cosmology's ability to constrain long-range forces between dark matter particles. Specifically, we consider a fermionic dark matter interacting via a Yukawa-coupled lig…
astro-ph.CO2025
Dark forces suppress structure growth
Marco Costa, Cyril Creque-Sarbinowski, Olivier Simon +1
No experimental test precludes the possibility that the dark matter experiences forces beyond general relativity -- in fact, a variety of cosmic microwave background observations s…