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Two-Component Description for Relativistic Fermions
Chen Yu-Qi; Sang Wen-Long; Yang Lan-Fei; Chen, YQ , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China
2009
发表期刊COMMUNICATIONS IN THEORETICAL PHYSICS
ISSN0253-6102
卷号51期号:6页码:1095-1100
摘要We propose a two-component form to describe massive relativistic fermions in gauge theories. Relations between the Green's functions in this form and those in the conventional four-component form are derived. It is shown that the S-matrix elements in both forms are exactly the same. The description of the fermion in the new form simplifies significantly the gamma-matrix algebra in the four-component form. In particular, in perturbative calculations the propagator of the fermion is a scalar function. As examples, we use this form to reproduce the relativistic spectrum of hydrodron atom, the S-matrix of e(+)e(-) -> mu(+)mu(-) and QED one-loop vacuum polarization of photon.
部门归属[Chen, YQ; Sang, WL; Yang, LF] Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China
关键词Effective Field-theory Quark Effective Theory Heavy Quarks Amplitudes Mesons Light Qcd
学科领域Physics
资助者National Natural Science Foundation of China[10475103] ; National Natural Science Foundation of China[10475103] ; National Natural Science Foundation of China[10475103] ; National Natural Science Foundation of China[10475103]
收录类别SCI
资助者National Natural Science Foundation of China[10475103] ; National Natural Science Foundation of China[10475103] ; National Natural Science Foundation of China[10475103] ; National Natural Science Foundation of China[10475103]
WOS记录号WOS:000267265700024
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/5312
专题理论物理所1978-2010年知识产出
通讯作者Chen, YQ , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China
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GB/T 7714
Chen Yu-Qi,Sang Wen-Long,Yang Lan-Fei,et al. Two-Component Description for Relativistic Fermions[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,2009,51(6):1095-1100.
APA Chen Yu-Qi,Sang Wen-Long,Yang Lan-Fei,&Chen, YQ , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.(2009).Two-Component Description for Relativistic Fermions.COMMUNICATIONS IN THEORETICAL PHYSICS,51(6),1095-1100.
MLA Chen Yu-Qi,et al."Two-Component Description for Relativistic Fermions".COMMUNICATIONS IN THEORETICAL PHYSICS 51.6(2009):1095-1100.
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