Knowledge Management System of Institute of Theoretical Physics, CAS
Tang, Yong1; Wu, Yue-Liang
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| Conformal alpha-attractor inflation with Weyl gauge field | |
| Source Publication | JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
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| Language | 英语 |
| Keyword | SYMMETRY COSMOLOGY FLATNESS UNIVERSE HORIZON |
| Abstract | 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. |
| 2020 | |
| ISSN | 1475-7516 |
| Issue | 3Pages:67 |
| Cooperation Status | 国内 |
| Subject Area | Astronomy & Astrophysics ; Physics |
| MOST Discipline Catalogue | Astronomy & Astrophysics ; Physics, Particles & Fields |
| DOI | 10.1088/1475-7516/2020/03/067 |
| Indexed By | SCIE |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.itp.ac.cn/handle/311006/26945 |
| Collection | SCI期刊论文 |
| Affiliation | 1.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):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. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Conformal alpha-attr（857KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | Application Full Text | |
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