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Tang, Yong1; Wu, Yue-Liang
Conformal alpha-attractor inflation with Weyl gauge field
Source PublicationJOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Language英语
KeywordSYMMETRY COSMOLOGY FLATNESS UNIVERSE HORIZON
AbstractConformal scaling invariance should play an important role for understanding the origin and evolution of universe. During inflation period, it appears to be an approximate symmetry, but how it is broken remains uncertain. The appealing alpha-attractor inflation implements the spontaneous breaking of conformal symmetry and a mysterious SO(1; 1) global symmetry. To better understand the SO(1; 1) symmetry, here we present a systematic treatment of the inflation models with local conformal symmetry in a more general formalism. We find SO(2) is the other possible symmetry in the presence of Weyl gauge field. We also obtain all the analytic solutions that relate the inflation fields between Jordan frame and Einstein frame. We illustrate a class of inflation models with the approximate SO(2) symmetry and trigonometric potential, and find that it can fit the current observations and will be probed by future CMB experiments.
2020
ISSN1475-7516
Issue3Pages:67
Cooperation Status国内
Subject AreaAstronomy & Astrophysics ; Physics
MOST Discipline CatalogueAstronomy & Astrophysics ; Physics, Particles & Fields
DOI10.1088/1475-7516/2020/03/067
Indexed BySCIE
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/26945
CollectionSCI期刊论文
Affiliation1.Univ Chinese Acad Sci, 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
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GB/T 7714
Tang, Yong,Wu, Yue-Liang. Conformal alpha-attractor inflation with Weyl gauge field[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2020(3):67.
APA Tang, Yong,&Wu, Yue-Liang.(2020).Conformal alpha-attractor inflation with Weyl gauge field.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(3),67.
MLA Tang, Yong,et al."Conformal alpha-attractor inflation with Weyl gauge field".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .3(2020):67.
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