3 papers
astro-ph.CO2026
Dark Matter with a Drag at Low Redshift
Martin Schmaltz, Eashwar N. Sivarajan
Recent analyses of and weak-lensing data indicate that the linear growth rate at may be lower than predicted by CDM. This motivates models of dark matter in…
astro-ph.CO2024
Stepping into the Forest: Confronting Interacting Radiation Models for the Hubble Tension with Lyman- Data
Hengameh Bagherian, Melissa Joseph, Martin Schmaltz +1
Models of interacting dark radiation have been shown to alleviate the Hubble tension. Extensions incorporating a coupling between dark matter and dark radiation (DM-DR) have been p…
hep-ph2024
Neutrino-Dark Sector Equilibration and Primordial Element Abundances
Cara Giovanetti, Martin Schmaltz, Neal Weiner
After neutrinos decouple from the photon bath, they can populate a thermal dark sector. If this occurs at a temperature above ~100 keV, this can have measurable impacts on light el…