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arXiv · 2002.01131

Cosmological Signatures of Superheavy Dark Matter

Lingfeng Li·Shiyun Lu·Yi Wang·Siyi Zhou
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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.

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Lingfeng Li, Shiyun Lu, Yi Wang, Siyi Zhou. 2020-02-04. Cosmological Signatures of Superheavy Dark Matter. https://doi.org/10.1007/jhep07(2020)231

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