2 papers
hep-ph2026
Cosmological signals of dark matter semi-annihilation
Boris Betancourt Kamenetskaia, Mathias Garny, Alejandro Ibarra +2
The growth of primordial density fluctuations in the early Universe leads to an inhomogeneous dark matter distribution at high redshift, where semi-annihilation processes of the fo…
hep-ph2026
Nanohertz gravitational waves from the baryon-dark matter coincidence
Alessia Musumeci, Jacopo Nava, Silvia Pascoli +1
The nanohertz gravitational waves (GW) observed by pulsar timing arrays may originate from a cosmological first-order phase transition (PT) at 100 MeV. Taking this possibili…