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Temporal variation of the fine structure constant and the strong interaction parameter in the Th-229 transition

文献类型：期刊论文

作者He, Xiao-tao1; Ren, Zhong-zhou1,2
刊名NUCLEAR PHYSICS A
出版日期2008-06-15
卷号806页码:117-123
关键词fine structure constant mass nuclear isomer state temporal variation
ISSN号0375-9474
DOI10.1016/j.nuclphysa.2008.03.002
英文摘要The very low energy (7.6 +/- 0.5 eV) of the long-lived isomer state in Th-229 has inspired the idea that the transition between this isomer and the ground state might be used to measure the temporal variation of some fundamental physical constants with great enhanced sensitivity in laboratory. Physicists have used several models to test whether this significantly enhanced sensitivity does exist. However, incongruous conclusions were reached. Based on the formulae derived from Feynman-Hellmann theorem, we reexamine the physics involved in those argument by the relativistic mean field theory. The results show that the correlation between the nuclear strong interaction and Coulomb force is important and cannot be neglected. The sensitivity to variations of fine structure constant, nucleon mass and meson masses could be enhanced by several orders of magnitude in the Th-229 transition. (c) 2008 Elsevier B.V. All rights reserved.
WOS关键词FUNDAMENTAL CONSTANTS ; TIME-VARIATION ; ENHANCED SENSITIVITY
WOS研究方向Physics
语种英语
WOS记录号WOS:000256566000007
出版者ELSEVIER SCIENCE BV
源URL[http://119.78.100.186/handle/113462/28923]  
专题中国科学院近代物理研究所
通讯作者He, Xiao-tao
作者单位1.Nanjing Univ, Dept Phys, Nanjing 210093, Peoples R China
2.Natl Lab Heavy Ion Accelerator, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China
推荐引用方式
GB/T 7714		 He, Xiao-tao,Ren, Zhong-zhou. Temporal variation of the fine structure constant and the strong interaction parameter in the Th-229 transition[J]. NUCLEAR PHYSICS A,2008,806:117-123.
APA He, Xiao-tao,&Ren, Zhong-zhou.(2008).Temporal variation of the fine structure constant and the strong interaction parameter in the Th-229 transition.NUCLEAR PHYSICS A,806,117-123.
MLA He, Xiao-tao,et al."Temporal variation of the fine structure constant and the strong interaction parameter in the Th-229 transition".NUCLEAR PHYSICS A 806(2008):117-123.

入库方式： OAI收割

来源：近代物理研究所

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