Generation of particle number asymmetry in expanding universe
High Energy Physics - Phenomenology
2019-04-11 v2 High Energy Physics - Theory
Abstract
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.
Keywords
Cite
@article{arxiv.1807.10039,
title = {Generation of particle number asymmetry in expanding universe},
author = {Takuya Morozumi and Keiko I. Nagao and Apriadi Salim Adam and Hiroyuki Takata},
journal= {arXiv preprint arXiv:1807.10039},
year = {2019}
}
Comments
5 pages, 2 figures, contributed talk at 1st Workshop on Phenomenology for Particle and Anti-Particle 2018, minor modification