A Self Consistent Solution to Quantum Kinetic Evolution of Neutrinos in the Early Universe

We study the quantum kinetic evolution of neutrinos in the early universe. In this hot and dense environment, neutrino evolution is influenced by two competing effects: quantum coherence, which builds up quantum phase, and inelastic scattering, which kinetically destructs this phase. We develop a parallelized model to solve the collision integral terms in full and in this way obtain a self consistent and accurate solution to the QKEs with minimal approximations. We discuss the findings for neutrino evolution in the first few seconds after the Big Bang.