Cosmological Signatures of Superheavy Dark Matter
High Energy Physics - Phenomenology
2020-08-26 v1 Cosmology and Nongalactic Astrophysics
High Energy Physics - Theory
Abstract
We discuss two possible scenarios, namely the curvaton mechanism and the dark matter density modulation, where non-Gaussianity signals of superheavy dark matter produced by gravity can be enhanced and observed. In both scenarios, superheavy dark matter couples to an additional light field as a mediator. In the case of derivative coupling, the resulting non-Gaussianities induced by the light field can be large, which can provide inflationary evidences for these superheavy dark matter scenarios.
Keywords
Cite
@article{arxiv.2002.01131,
title = {Cosmological Signatures of Superheavy Dark Matter},
author = {Lingfeng Li and Shiyun Lu and Yi Wang and Siyi Zhou},
journal= {arXiv preprint arXiv:2002.01131},
year = {2020}
}
Comments
26 pages, 5 figures