Hot new early dark energy: Towards a unified dark sector of neutrinos, dark energy and dark matter

Hot new early dark energy describes a supercooled, first-order phase transition that takes place at sub-eV temperatures in the sector. It lowers sound horizon, which provides possible solution to Hubble tension, and, same time, it can explain neutrino masses through inverse seesaw mechanism by making set of sterile Majorana fermions massive. First, we argue this scenario strengthens existing cosmological bounds on heaviest mass. This, turn, constrains sector temperature, us total with two falsifiable predictions. In second step, discuss phenomenological consequences embedding hot larger gauge group is partially broken above TeV scale. This novel theory, could even be motivated independently completes high-energy corner and explains mass matter candidate produced gravitational interactions high energies.