Knowledge Management System of Institute of Theoretical Physics, CAS
Li, X; Lin, HN; Li, X (reprint author), Chongqing Univ, Dept Phys, Chongqing 401331, Peoples R China.; Li, X (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China. | |
Spatial and temporal variations of the fine-structure constant in the Finslerian universe | |
发表期刊 | CHINESE PHYSICS C |
语种 | 英语 |
关键词 | Finsler Spacetime Fine-structure Constant Anisotropy Of The Universe |
摘要 | Recent observations show that the electromagnetic fine-structure constant, alpha(e), may vary with space and time. In the framework of Finsler spacetime, we propose here an anisotropic cosmological model, in which both spatial and temporal variations of alpha(e) are allowed. Our model naturally leads to the dipole structure of alpha(e), and predicts that the dipole amplitude increases with time. We fit our model to the most up-to-date measurements of alpha(e) from the quasar absorption lines. It is found that the dipole direction points towards (l, b) = (330.2 degrees +/- 7.3 degrees, -13.0 degrees +/- 5.6 degrees) in galactic coordinates, and the anisotropic parameter is b(0) = (0.47 +/- 0.09) x 10(-5), which corresponds to a dipole amplitude (7.2 +/- 1.4) x 10(-8) at redshift z = 0.015. This is consistent with the upper limit of the variation of alpha(e) measured in the Milky Way. We also fit our model to Union2.1 type Ia supernovae, and find that the preferred direction of Union2.1 is consistent with the dipole direction of alpha(e). |
2017 | |
卷号 | 41期号:6页码:65102 |
学科领域 | Physics |
DOI | http://dx.doi.org/10.1088/1674-1137/41/6/065102 |
项目资助者 | Fundamental Research Funds for Central Universities [106112016CDJCR301206] ; Fundamental Research Funds for Central Universities [106112016CDJCR301206] ; Fundamental Research Funds for Central Universities [106112016CDJCR301206] ; Fundamental Research Funds for Central Universities [106112016CDJCR301206] ; National Natural Science Fund of China [11305181, 11547035, 11603005] ; National Natural Science Fund of China [11305181, 11547035, 11603005] ; National Natural Science Fund of China [11305181, 11547035, 11603005] ; National Natural Science Fund of China [11305181, 11547035, 11603005] ; Open Project Program of State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, China [Y5KF181CJ1] ; Open Project Program of State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, China [Y5KF181CJ1] ; Open Project Program of State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, China [Y5KF181CJ1] ; Open Project Program of State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, China [Y5KF181CJ1] |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.itp.ac.cn/handle/311006/22044 |
专题 | SCI期刊论文 |
通讯作者 | Li, X (reprint author), Chongqing Univ, Dept Phys, Chongqing 401331, Peoples R China.; Li, X (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China. |
推荐引用方式 GB/T 7714 | Li, X,Lin, HN,Li, X ,et al. Spatial and temporal variations of the fine-structure constant in the Finslerian universe[J]. CHINESE PHYSICS C,2017,41(6):65102. |
APA | Li, X,Lin, HN,Li, X ,&Li, X .(2017).Spatial and temporal variations of the fine-structure constant in the Finslerian universe.CHINESE PHYSICS C,41(6),65102. |
MLA | Li, X,et al."Spatial and temporal variations of the fine-structure constant in the Finslerian universe".CHINESE PHYSICS C 41.6(2017):65102. |
条目包含的文件 | ||||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
Spatial and temporal(126KB) | 开放获取 | -- | 请求全文 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论