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Cosmological constraints on ultra-light axion fields

文献类型：期刊论文

作者Kang, Jian-Gang2,3; Gong, Yan3; Cheng, Gong2,3; Chen, Xuelei1,2,3
刊名RESEARCH IN ASTRONOMY AND ASTROPHYSICS
出版日期2020-04-01
卷号20期号:4页码:8
ISSN号1674-4527
关键词cosmology dark energy cosmological parameters
DOI10.1088/1674-4527/20/4/55
英文摘要Ultra-light axions (ULAs) with mass less than 10(-20) eV have interesting behaviors that may contribute to either dark energy or dark matter at different epochs of the Universe. Their properties can be explored by cosmological observations, such as expansion history of the Universe, cosmic large-scale structure, cosmic microwave background, etc. In this work, we study the ULAs with mass around 10(-33) eV, which means that the ULA field still rolls slowly at present with the equation of state w = -1 as dark energy. To investigate the mass and other properties of this kind of ULA field, we adopt the measurements of Type Ia supernova (SN Ia), baryon acoustic oscillation (BAO), and Hubble parameter H(z). The Markov Chain Monte Carlo (MCMC) technique is employed to perform the constraints on the parameters. Finally, by exploring four cases of the model, we find that the mass of this ULA field is about 3 x 10(-33) eV if assuming the initial axion field phi(i) = M-pl. We also investigate a general case by assuming phi(i) <= M-pl, and find that the fitting results of phi(i)/M-pl are consistent with or close to 1 for the datasets that we use.
WOS关键词BARYON ACOUSTIC-OSCILLATIONS ; CENT DISTANCE ; SAMPLE ; GALAXIES ; I.
资助项目National Natural Science Foundation of China (NSFC)[11822305] ; National Natural Science Foundation of China (NSFC)[11773031] ; National Natural Science Foundation of China (NSFC)[11633004] ; Chinese Academy of Sciences (CAS) Strategic Priority Research Program[XDA15020200] ; NSFC-ISF joint research program[11761141012] ; CAS Interdisciplinary Innovation Team
WOS研究方向Astronomy & Astrophysics
语种英语
出版者NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
WOS记录号WOS:000529931300001
资助机构National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) Strategic Priority Research Program ; Chinese Academy of Sciences (CAS) Strategic Priority Research Program ; NSFC-ISF joint research program ; NSFC-ISF joint research program ; CAS Interdisciplinary Innovation Team ; CAS Interdisciplinary Innovation Team ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) Strategic Priority Research Program ; Chinese Academy of Sciences (CAS) Strategic Priority Research Program ; NSFC-ISF joint research program ; NSFC-ISF joint research program ; CAS Interdisciplinary Innovation Team ; CAS Interdisciplinary Innovation Team ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) Strategic Priority Research Program ; Chinese Academy of Sciences (CAS) Strategic Priority Research Program ; NSFC-ISF joint research program ; NSFC-ISF joint research program ; CAS Interdisciplinary Innovation Team ; CAS Interdisciplinary Innovation Team ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) Strategic Priority Research Program ; Chinese Academy of Sciences (CAS) Strategic Priority Research Program ; NSFC-ISF joint research program ; NSFC-ISF joint research program ; CAS Interdisciplinary Innovation Team ; CAS Interdisciplinary Innovation Team
源URL[http://ir.bao.ac.cn/handle/114a11/55213]  
专题中国科学院国家天文台
通讯作者Gong, Yan
作者单位1.Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China
2.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Key Lab Computat Astrophys, Natl Astron Observ, Beijing 100101, Peoples R China
推荐引用方式
GB/T 7714		 Kang, Jian-Gang,Gong, Yan,Cheng, Gong,et al. Cosmological constraints on ultra-light axion fields[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2020,20(4):8.
APA Kang, Jian-Gang,Gong, Yan,Cheng, Gong,&Chen, Xuelei.(2020).Cosmological constraints on ultra-light axion fields.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,20(4),8.
MLA Kang, Jian-Gang,et al."Cosmological constraints on ultra-light axion fields".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 20.4(2020):8.

入库方式： OAI收割

来源：国家天文台

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