Conformal alpha-attractor inflation with Weyl gauge field

doi:10.1088/1475-7516/2020/03/067

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	Conformal alpha-attractor inflation with Weyl gauge field
	Tang, Yong 2; Wu, Yue-Liang
刊名	JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
	2020
期号	3 页码:67
关键词	SYMMETRY COSMOLOGY FLATNESS UNIVERSE HORIZON
ISSN号	1475-7516
DOI	10.1088/1475-7516/2020/03/067
英文摘要	Conformal 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.
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/311006/26945]
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.Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing, Peoples R China 3.Chinese Acad Sci, Natl Astron Observ, Beijing, Peoples R China 4.UCAS, Hangzhou Inst Adv Study, Sch Fundamental Phys & Math Sci, Hangzhou 310024, Peoples R China 5.Int Ctr Theoret Phys Asia Pacific, Beijing, 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. 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.