NAOC Open IR
Conformal alpha-attractor inflation with Weyl gauge field
Tang, Yong1,2,3; Wu, Yue-Liang3,4,5,6
2020-03-01
Source PublicationJOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
ISSN1475-7516
Issue3Pages:14
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.
Keywordinflation modified gravity physics of the early universe gravitational waves / sources
Funding OrganizationNational Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; NSFC ; NSFC ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; CAS Center for Excellence in Particle Physics (CCEPP) ; CAS Center for Excellence in Particle Physics (CCEPP) ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; NSFC ; NSFC ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; CAS Center for Excellence in Particle Physics (CCEPP) ; CAS Center for Excellence in Particle Physics (CCEPP) ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; NSFC ; NSFC ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; CAS Center for Excellence in Particle Physics (CCEPP) ; CAS Center for Excellence in Particle Physics (CCEPP) ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; NSFC ; NSFC ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; CAS Center for Excellence in Particle Physics (CCEPP) ; CAS Center for Excellence in Particle Physics (CCEPP)
DOI10.1088/1475-7516/2020/03/067
WOS KeywordSYMMETRY ; COSMOLOGY ; FLATNESS ; UNIVERSE ; HORIZON
Language英语
Funding ProjectNational Science Foundation of China (NSFC)[11851302] ; NSFC[11851302] ; NSFC[11851303] ; NSFC[11690022] ; NSFC[11747601] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB23030100] ; CAS Center for Excellence in Particle Physics (CCEPP)
Funding OrganizationNational Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; NSFC ; NSFC ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; CAS Center for Excellence in Particle Physics (CCEPP) ; CAS Center for Excellence in Particle Physics (CCEPP) ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; NSFC ; NSFC ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; CAS Center for Excellence in Particle Physics (CCEPP) ; CAS Center for Excellence in Particle Physics (CCEPP) ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; NSFC ; NSFC ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; CAS Center for Excellence in Particle Physics (CCEPP) ; CAS Center for Excellence in Particle Physics (CCEPP) ; National Science Foundation of China (NSFC) ; National Science Foundation of China (NSFC) ; NSFC ; NSFC ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; CAS Center for Excellence in Particle Physics (CCEPP) ; CAS Center for Excellence in Particle Physics (CCEPP)
WOS Research AreaAstronomy & Astrophysics ; Physics
WOS SubjectAstronomy & Astrophysics ; Physics, Particles & Fields
WOS IDWOS:000528029100068
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/55196
Collection中国科学院国家天文台
Corresponding AuthorTang, Yong
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
Recommended Citation
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):14.
APA Tang, Yong,&Wu, Yue-Liang.(2020).Conformal alpha-attractor inflation with Weyl gauge field.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(3),14.
MLA Tang, Yong,et al."Conformal alpha-attractor inflation with Weyl gauge field".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .3(2020):14.
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