Generation of particle number asymmetry in expanding universe

We study creation and time evolution of particle number asymmetry with nonequilibrium quantum field theory. We introduce a model of a neutral scalar and a complex scalar and it has CP violating and particle number violating features. Starting with an initial condition specified by density operator,...

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Bibliographic Details
Published in:arXiv.org 2019-04
Main Authors: Morozumi, Takuya, Nagao, Keiko I, Apriadi Salim Adam, Takata, Hiroyuki
Format: Article
Language:English
Subjects:
Airborne particulates
Asymmetry
Evolution
Field theory
Perturbation methods
Quantum field theory
Quantum theory
Universe
Vehicle emissions
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Summary:We study creation and time evolution of particle number asymmetry with nonequilibrium quantum field theory. We introduce a model of a neutral scalar and a complex scalar and it has CP violating and particle number violating features. Starting with an initial condition specified by density operator, we show how particle number asymmetry can be generated through interaction. We investigate the time evolution of particle number asymmetry of universe using perturbation method.
ISSN:2331-8422