Weyl scaling invariant R-2 gravity for inflation and dark matter

doi:10.1016/j.physletb.2020.135716

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	Weyl scaling invariant R-2 gravity for inflation and dark matter
	Tang, Yong 1; Wu, Yue-Liang
刊名	PHYSICS LETTERS B
	2020
卷号	809 页码:135716
关键词	ELECTROWEAK SYMMETRY-BREAKING QUANTUM COSMOLOGY FLATNESS UNIVERSE HORIZON
ISSN号	0370-2693
DOI	10.1016/j.physletb.2020.135716
英文摘要	Inflation in the early universe can generate the nearly conformal invariant fluctuation that leads to the structures we observe at the present. The simple viable Starobinsky R-2 inflation has an approximate global scale symmetry. We study the conformal symmetric Weyl (R) over cap (2) and general F((R) over cap) theories and demonstrate their equivalence to Einstein gravity coupled with a scalar and a Weyl gauge field. The scalar field in Weyl (R) over cap (2) gravity can be responsible for inflation with Starobinsky model as the attractor, potentially distinguishable from the latter by future experiments. The intrinsic Weyl gauge boson becomes massive once the Einstein frame is fixed, and constitutes as a dark matter candidate with mass up to similar to 5 x 10(16) GeV. (c) 2020 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
学科主题	Astronomy & Astrophysics ; Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/27537]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.Univ Chinese Acad Sci UCAS, Sch Astron & Space Sci, Beijing, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Beijing, Peoples R China 3.UCAS, Hangzhou Inst Adv Study, Sch Fundamental Phys & Math Sci, Hangzhou 310024, Peoples R China 4.Int Ctr Theoret Phys Asia Pacific, Beijing, Peoples R China 5.Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China 6.Univ Chinese Acad Sci, Sch Phys Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Tang, Yong,Wu, Yue-Liang. Weyl scaling invariant R-2 gravity for inflation and dark matter[J]. PHYSICS LETTERS B,2020,809:135716.
APA	Tang, Yong,&Wu, Yue-Liang.(2020).Weyl scaling invariant R-2 gravity for inflation and dark matter.PHYSICS LETTERS B,809,135716.
MLA	Tang, Yong,et al."Weyl scaling invariant R-2 gravity for inflation and dark matter".PHYSICS LETTERS B 809(2020):135716.