Improved DHOST Genesis

Abstract We improve the DHOST Genesis proposed in [1], such that the near scale invariant scalar power spectrum can be generated from the model itself, without invoking extra mechanism like a string gas. Besides, the superluminality problem of scalar perturbation plagued in [1] can be rescued by cho...

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Autores principales:	Mian Zhu, Yunlong Zheng
Formato:	article
Lenguaje:	EN
Publicado:	SpringerOpen 2021
Materias:	Classical Theories of Gravity Cosmology of Theories beyond the SM Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
Acceso en línea:	https://doaj.org/article/20a26659b32744c4a266cc280b02e053
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id	oai:doaj.org-article:20a26659b32744c4a266cc280b02e053
record_format	dspace
spelling	oai:doaj.org-article:20a26659b32744c4a266cc280b02e0532021-11-28T12:40:28ZImproved DHOST Genesis10.1007/JHEP11(2021)1631029-8479https://doaj.org/article/20a26659b32744c4a266cc280b02e0532021-11-01T00:00:00Zhttps://doi.org/10.1007/JHEP11(2021)163https://doaj.org/toc/1029-8479Abstract We improve the DHOST Genesis proposed in [1], such that the near scale invariant scalar power spectrum can be generated from the model itself, without invoking extra mechanism like a string gas. Besides, the superluminality problem of scalar perturbation plagued in [1] can be rescued by choosing proper DHOST action.Mian ZhuYunlong ZhengSpringerOpenarticleClassical Theories of GravityCosmology of Theories beyond the SMNuclear and particle physics. Atomic energy. RadioactivityQC770-798ENJournal of High Energy Physics, Vol 2021, Iss 11, Pp 1-15 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Classical Theories of Gravity Cosmology of Theories beyond the SM Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
spellingShingle	Classical Theories of Gravity Cosmology of Theories beyond the SM Nuclear and particle physics. Atomic energy. Radioactivity QC770-798 Mian Zhu Yunlong Zheng Improved DHOST Genesis
description	Abstract We improve the DHOST Genesis proposed in [1], such that the near scale invariant scalar power spectrum can be generated from the model itself, without invoking extra mechanism like a string gas. Besides, the superluminality problem of scalar perturbation plagued in [1] can be rescued by choosing proper DHOST action.
format	article
author	Mian Zhu Yunlong Zheng
author_facet	Mian Zhu Yunlong Zheng
author_sort	Mian Zhu
title	Improved DHOST Genesis
title_short	Improved DHOST Genesis
title_full	Improved DHOST Genesis
title_fullStr	Improved DHOST Genesis
title_full_unstemmed	Improved DHOST Genesis
title_sort	improved dhost genesis
publisher	SpringerOpen
publishDate	2021
url	https://doaj.org/article/20a26659b32744c4a266cc280b02e053
work_keys_str_mv	AT mianzhu improveddhostgenesis AT yunlongzheng improveddhostgenesis
_version_	1718407820662013952

Improved DHOST Genesis

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