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Effective photon mass in nuclear matter and finite nuclei
Sun BX(孙宝玺); Shen PN(沈彭年); Sun, BX; Lu, XF; Shen, PN; Zhao, EG
2003
发表期刊MODERN PHYSICS LETTERS A
卷号18期号:21页码:1485-1492
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
文章类型Article
摘要Electromagnetic field in nuclear matter and nuclei are studied. In the nuclear matter, because the expectation value of the electric charge density operator is not zero, different in vacuum, the U(l) local gauge symmetry of electric charge is spontaneously broken, and consequently, the photon gains an effective mass through the Higgs mechanism. An alternative way to study the effective mass of photon is to calculate the self-energy of photon perturbatively. It shows that the effective mass of photon is about 5.42 MeV in the symmetric nuclear matter at the saturation density rho(0) = 0.16 fm(-3) and about 2.0 MeV at the surface of U-238. It Seems that the two-body decay of a massive photon causes the sharp lines of electron-positron pairs in the low energy heavy ion collision experiments of U-238 + Th-232.
关键词photon interaction with hsdrons spontaneous breaking of gauge symmetries nuclear matter
学科领域Physics
研究领域[WOS]Physics ; Physics
DOI10.1142/S0217732303011332
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语种英语
研究领域[WOS]Physics ; Physics
WOS类目Physics, Nuclear ; Physics, Particles & Fields ; Physics, Mathematical
WOS记录号WOS:000184303600006
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/239377
专题理论物理室
作者单位中国科学院高能物理研究所
推荐引用方式
GB/T 7714
Sun BX,Shen PN,Sun, BX,et al. Effective photon mass in nuclear matter and finite nuclei[J]. MODERN PHYSICS LETTERS A,2003,18(21):1485-1492.
APA 孙宝玺,沈彭年,Sun, BX,Lu, XF,Shen, PN,&Zhao, EG.(2003).Effective photon mass in nuclear matter and finite nuclei.MODERN PHYSICS LETTERS A,18(21),1485-1492.
MLA 孙宝玺,et al."Effective photon mass in nuclear matter and finite nuclei".MODERN PHYSICS LETTERS A 18.21(2003):1485-1492.
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