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Tang, Yong1; Wu, Yue-Liang
Weyl scaling invariant R-2 gravity for inflation and dark matter
Source PublicationPHYSICS LETTERS B
AbstractInflation 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 (
Cooperation Status国内
Subject AreaAstronomy & Astrophysics ; Physics
MOST Discipline CatalogueAstronomy & Astrophysics ; Physics, Nuclear ; Physics, Particles & Fields
Indexed BySCIE
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Document Type期刊论文
Affiliation1.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
Recommended Citation
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.
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