Direct couplings of mimetic dark matter and their cosmological effects
General Relativity and Quantum Cosmology
2018-01-17 v2 High Energy Physics - Theory
Abstract
The original mimetic model was proposed to take the role of dark matter. In this paper we consider possible direct interactions of the mimetic dark matter with other matter in the universe, especially the standard model particles such as baryons and photons. By imposing shift symmetry, the mimetic dark matter field can only have derivative couplings. We discuss the possibilities of generating baryon number asymmetry and cosmic birefringence in the universe based on the derivative couplings of the mimetic dark matter to baryons and photons.
Keywords
Cite
@article{arxiv.1710.03945,
title = {Direct couplings of mimetic dark matter and their cosmological effects},
author = {Liuyuan Shen and Yicen Mou and Yunlong Zheng and Mingzhe Li},
journal= {arXiv preprint arXiv:1710.03945},
year = {2018}
}
Comments
8 pages, references are updated, the version to be published in Chinese Physics C