Cosmological signatures of superheavy dark matter

Cosmological signatures of superheavy dark matter

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 a...

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Main Authors: Lingfeng Li, Shiyun Lu, Yi Wang, Siyi Zhou
Format: Article
Language:English
Published: SpringerOpen 2020-07-01
Series:Journal of High Energy Physics
Subjects:
Cosmology of Theories beyond the SM
Beyond Standard Model
Online Access:http://link.springer.com/article/10.1007/JHEP07(2020)231
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spelling doaj-9183bf8ff6b24321b10cba1709e171342020-11-25T01:19:22ZengSpringerOpenJournal of High Energy Physics1029-84792020-07-012020713110.1007/JHEP07(2020)231Cosmological signatures of superheavy dark matterLingfeng Li0Shiyun Lu1Yi Wang2Siyi Zhou3Department of Physics, Hong Kong University of Science and TechnologyDepartment of Physics, Hong Kong University of Science and TechnologyDepartment of Physics, Hong Kong University of Science and TechnologyThe Oskar Klein Centre for Cosmoparticle Physics & Department of Physics, Stockholm University, AlbaNovaAbstract 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.http://link.springer.com/article/10.1007/JHEP07(2020)231Cosmology of Theories beyond the SMBeyond Standard Model
collection DOAJ
language English
format Article
sources DOAJ
author Lingfeng Li
Shiyun Lu
Yi Wang
Siyi Zhou
spellingShingle Lingfeng Li
Shiyun Lu
Yi Wang
Siyi Zhou
Cosmological signatures of superheavy dark matter
Journal of High Energy Physics
Cosmology of Theories beyond the SM
Beyond Standard Model
author_facet Lingfeng Li
Shiyun Lu
Yi Wang
Siyi Zhou
author_sort Lingfeng Li
title Cosmological signatures of superheavy dark matter
title_short Cosmological signatures of superheavy dark matter
title_full Cosmological signatures of superheavy dark matter
title_fullStr Cosmological signatures of superheavy dark matter
title_full_unstemmed Cosmological signatures of superheavy dark matter
title_sort cosmological signatures of superheavy dark matter
publisher SpringerOpen
series Journal of High Energy Physics
issn 1029-8479
publishDate 2020-07-01
description 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.
topic Cosmology of Theories beyond the SM
Beyond Standard Model
url http://link.springer.com/article/10.1007/JHEP07(2020)231
work_keys_str_mv AT lingfengli cosmologicalsignaturesofsuperheavydarkmatter
AT shiyunlu cosmologicalsignaturesofsuperheavydarkmatter
AT yiwang cosmologicalsignaturesofsuperheavydarkmatter
AT siyizhou cosmologicalsignaturesofsuperheavydarkmatter
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