NON-EXTENSIVE STATISTICS TO THE COSMOLOGICAL LITHIUM PROBLEM
文献类型：期刊论文
| 作者 | Hou, S. Q.1; He, J. J.1,2; Parikh, A.3,4; Kahl, D.5; Bertulani, C. A.6; Kajino, T.7,8,9; Mathews, G. J.8,10; Zhao, G.2
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2017-01-10 |
| 卷号 | 834期号:2 |
| 关键词 | early universe plasmas primordial nucleosynthesis |
| 英文摘要 | Big Bang nucleosynthesis (BBN) theory predicts the abundances of the light elements D, He-3, He-4, and Li-7 produced in the early universe. The primordial abundances of D and He-4 inferred from observational data are in good agreement with predictions, however, BBN theory overestimates the primordial Li-7 abundance by about a factor of three. This is the so-called "cosmological lithium problem." Solutions to this problem using conventional astrophysics and nuclear physics have not been successful over the past few decades, probably indicating the presence of new physics during the era of BBN. We have investigated the impact on BBN predictions of adopting a generalized distribution to describe the velocities of nucleons in the framework of Tsallis non-extensive statistics. This generalized velocity distribution is characterized by a parameter q, and reduces to the usually assumed Maxwell-Boltzmann distribution for q = 1. We find excellent agreement between predicted and observed primordial abundances of D, He-4, and Li-7 for 1.069 <= q <= 1.082, suggesting a possible new solution to the cosmological lithium problem. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | BIG-BANG NUCLEOSYNTHESIS ; THERMONUCLEAR REACTION-RATES ; PRIMORDIAL NUCLEOSYNTHESIS ; WMAP OBSERVATIONS ; ABUNDANCE ; COMPILATION ; ENERGIES ; ELEMENTS ; PHYSICS ; MODELS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000400138600003 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/8854]  |
| 专题 | 国家天文台_光学天文研究部 |
| 作者单位 | 1.Chinese Acad Sci, Inst Modern Phys, Key Lab High Precis Nucl Spect, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, Beijing 100012, Peoples R China 3.Univ Politecn Cataluna, EUETIB, Dept Fis & Engn Nucl, E-08036 Barcelona, Spain 4.Inst Estudis Espacials Catalunya, E-08034 Barcelona, Spain 5.Univ Tokyo, Ctr Nucl Study, RIKEN Campus, Wako, Saitama 3510198, Japan 6.Texas A&M Univ, Commerce, TX 75429 USA 7.Univ Tokyo, Sch Sci, Dept Astron, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1130033, Japan 8.Natl Astron Observ Japan, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan 9.Univ Beijing, Sch Phys & Nucl Energy Engn, Int Res Ctr Big Bang Cosmol & Element Genesis, Beijing 100191, Peoples R China 10.Univ Notre Dame, Dept Phys, Ctr Astrophys, Notre Dame, IN 46556 USA |
| 推荐引用方式 GB/T 7714 | Hou, S. Q.,He, J. J.,Parikh, A.,et al. NON-EXTENSIVE STATISTICS TO THE COSMOLOGICAL LITHIUM PROBLEM[J]. ASTROPHYSICAL JOURNAL,2017,834(2). |
| APA | Hou, S. Q..,He, J. J..,Parikh, A..,Kahl, D..,Bertulani, C. A..,...&Zhao, G..(2017).NON-EXTENSIVE STATISTICS TO THE COSMOLOGICAL LITHIUM PROBLEM.ASTROPHYSICAL JOURNAL,834(2). |
| MLA | Hou, S. Q.,et al."NON-EXTENSIVE STATISTICS TO THE COSMOLOGICAL LITHIUM PROBLEM".ASTROPHYSICAL JOURNAL 834.2(2017). |
入库方式： OAI收割
来源：国家天文台
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