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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
DOIhttp://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]
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/22044
专题理论物理所科研产出_SCI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.
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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.
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