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题名: Effective photon mass in nuclear matter and finite nuclei
作者: Sun, BX ;  Lu, XF ;  Shen, PN ;  Zhao, EG
刊名: MODERN PHYSICS LETTERS A
出版日期: 2003
卷号: 18, 期号:21, 页码:1485-1492
关键词: HEAVY-ION COLLISIONS ;  POSITRON
学科分类: Physics
通讯作者: Sun, BX , Lab Phys Subatom & Cosmol, 53 Ave Martyrs, F-38026 Grenoble, France.
部门归属: 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
英文摘要: 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.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000184303600006
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/13265
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Sun, BX,Lu, XF,Shen, PN,et al. Effective photon mass in nuclear matter and finite nuclei[J]. MODERN PHYSICS LETTERS A,2003,18(21):1485-1492.
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