NON-EXTENSIVE STATISTICS TO THE COSMOLOGICAL LITHIUM PROBLEM

doi:10.3847/1538-4357/834/2/165

	NON-EXTENSIVE STATISTICS TO THE COSMOLOGICAL LITHIUM PROBLEM
	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
刊名	ASTROPHYSICAL JOURNAL
	2017-01-10
卷号	834 页码:5
关键词	early universe plasmas primordial nucleosynthesis
ISSN号	0004-637X
DOI	10.3847/1538-4357/834/2/165
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.
资助项目	National Natural Science Foundation of China[11490562] ; National Natural Science Foundation of China[11675229] ; Major State Basic Research Development Program of China[2016YFA0400503] ; Spanish MICINN[AYA2013-42762] ; U.S. DOE Grant[DDE-FG02-08ER41533] ; U.S. NSF grant[PHY-1415656] ; NSF CUSTIPEN grant[DE-FG02-13ER42025]
WOS关键词	BIG-BANG NUCLEOSYNTHESIS ; THERMONUCLEAR REACTION-RATES ; PRIMORDIAL NUCLEOSYNTHESIS ; WMAP OBSERVATIONS ; ABUNDANCE ; COMPILATION ; ENERGIES ; ELEMENTS ; PHYSICS ; MODELS
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000400138600003
资助机构	National Natural Science Foundation of China ; Major State Basic Research Development Program of China ; Spanish MICINN ; U.S. DOE Grant ; U.S. NSF grant ; NSF CUSTIPEN grant
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/45277]
专题	中国科学院近代物理研究所
通讯作者	He, J. J.
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,2017,834:5.
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,834,5.
MLA	Hou, S. Q.,et al."NON-EXTENSIVE STATISTICS TO THE COSMOLOGICAL LITHIUM PROBLEM".ASTROPHYSICAL JOURNAL 834(2017):5.