[en] The generation of the baryon asymmetry of the universe via CP-violating oscillations of two almost mass degenerate heavy neutrinos is studied within non-equilibrium quantum field theory. Analytic approximations are found in the case of fast and overdamped oscillations. The perspective of future experiments such as FCC-ee, ILC and CEPC to probe the parameter space is determined. Further, diffusion constants as essential parameters for electroweak baryogenesis are computed to leading order.
12 Nov 2018; 214 p; Also available from: http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:91-diss-20190128-1431688-1-1; This work has been supported in part by the Max Planck Institute for Physics, the Excellence Cluster "Origin and Structure of the Universe" and the TUM Graduate School.; Diss. (Dr.rer.nat.)