All-inclusive interacting dark sector cosmologies

Understand

In this paper we explore possible extensions of Interacting Dark Energy cosmologies, where Dark Energy and Dark Matter interact non-gravitationally with one another.

• In particular, we focus on the neutrino sector, analyzing the effect of both neutrino masses and the effective number of neutrino species.
• We consider the Planck 2018 legacy release data combined with several other cosmological probes, finding no evidence for new physics in the dark radiation sector.
• The current neutrino constraints from cosmology should be therefore regarded as robust, as they are not strongly dependent on the dark sector physics, once all the available observations are combined.