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Effective photon mass in finite nuclei
其他题名原子核内光子的有效质量
Sun BX(孙宝玺); Shen PN(沈彭年); Sun, BX; Lu, XF; Shen, PN; Zhao, EG
2003
发表期刊HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION
卷号27期号:4页码:337-340
通讯作者Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China ; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China ; Sichuan Univ, Dept Phys, Chengdu 610064, Peoples R China ; Natl Lab Heavy Ion Accelerator, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China ; Tsing Hua Univ, Dept Phys, Beijing 100084, Peoples R China ; China Ctr Adv Sci & Technol, World Lab, Beijing 100080, Peoples R China
摘要The electromagnetic field in nuclear Fermi gas and nuclei has been studied. Because in the nuclear Fermi gas the expectation value of the electric charge density operator is not zero, different from that in vacuum, the U (1) local gauge symmetry of electric charge is spontaneously broken in the nuclear Fermi gas, and consequently, the photon gains an effective mass. Perturbation calculation of the photon self-energy shows that the effective mass of photon is about 5.42MeV in the symmetric nuclear Fermi gas at the saturation density p(0) = 0.16fm(-3) and about 2.0MeV at the surface of U-238. Furthermore, it is concluded that it is just the two-body decay of a massive photon that causes the discovery of sharp lines of electron-positron pairs in low energy U-238 + Th-232 heavy ion collisions experiments.
文章类型Article
关键词nuclear Fermi gas nuclear charge-density-distribution local gauge symmetry spontaneous breaking
学科领域Physics
研究领域[WOS]Physics
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语种英语
WOS类目Physics, Nuclear ; Physics, Particles & Fields
WOS记录号WOS:000182298600013
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/237047
专题理论物理室
作者单位中国科学院高能物理研究所
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GB/T 7714
Sun BX,Shen PN,Sun, BX,et al. Effective photon mass in finite nuclei[J]. HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION,2003,27(4):337-340.
APA 孙宝玺,沈彭年,Sun, BX,Lu, XF,Shen, PN,&Zhao, EG.(2003).Effective photon mass in finite nuclei.HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION,27(4),337-340.
MLA 孙宝玺,et al."Effective photon mass in finite nuclei".HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION 27.4(2003):337-340.
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