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arXiv · 1609.02990

Creation and evolution of particle numberasymmetry in an expanding universe

Takuya Morozumi·Keiko I. Nagao·Apriadi Salim Adam·Hiroyuki Takata
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Abstract

We introduce a model which may generate particle number asymmetry in an expanding Universe. The model includes CP violating and particle number violating interactions. The model consists of a real scalar field and a complex scalar field. Starting with an initial condition specified by a density matrix, we show how the asymmetry is created through the interaction and how it evolves at later time. We compute the asymmetry using non-equilibrium quantum field theory and as a first test of the model, we study how the asymmetry evolves in the flat limit.

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Takuya Morozumi, Keiko I. Nagao, Apriadi Salim Adam, Hiroyuki Takata. 2016-09-10. Creation and evolution of particle numberasymmetry in an expanding universe. https://doi.org/10.1007/s11182-017-0986-x

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