Scalar-field theory of dark matter
Abstract
We develop a theory of dark matter based on a previously proposed picture, in which a complex vacuum scalar field makes the universe a superfluid, with the energy density of the superfluid giving rise to dark energy, and variations from vacuum density giving rise to dark matter. We formulate a nonlinear Klein-Gordon equation to describe the superfluid, treating galaxies as external sources. We study the response of the superfluid to the galaxies, in particular, the emergence of the dark-matter galactic halo, contortions during galaxy collisions, and the creation of vortices due to galactic rotation.
Cite
@article{arxiv.1304.1595,
title = {Scalar-field theory of dark matter},
author = {Kerson Huang and Chi Xiong and Xiaofei Zhao},
journal= {arXiv preprint arXiv:1304.1595},
year = {2014}
}
Comments
25 pages, 9 figures. A new section "Long-ranged force induced by the scalar field" is added, plus a few clarifications in the paper. References updated. To appear in International Journal of Modern Physics A