Presents a self-consistent reduction of non-local next-to-leading-order 2PI equations to local quantum kinetic equations that incorporate momentum exchange during tachyonic instabilities.
Quantum mechanics of baryogenesis
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abstract
The cosmological baryon asymmetry can be explained as remnant of heavy Majorana neutrino decays in the early universe. We study this out-of-equilibrium process by means of Kadanoff-Baym equations which are solved in a perturbative expansion. To leading order the problem is reduced to solving a set of Boltzmann equations for distribution functions.
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Tachyonic particle production: quantum 2PI formalism with momentum exchanging collisions
Presents a self-consistent reduction of non-local next-to-leading-order 2PI equations to local quantum kinetic equations that incorporate momentum exchange during tachyonic instabilities.