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Calculation of the chiral Lagrangian coefficients from the underlying theory of QCD: A simple approach
Yang, H; Wang, Q; Kuang, YP; Lu, Q; Yang, H , Tsing Hua Univ, Dept Phys, Beijing 100084, Peoples R China.
2002
发表期刊PHYSICAL REVIEW D
ISSN0556-2821
卷号66期号:1页码:-
摘要We calculate the coefficients in the chiral Lagrangian approximately from QCD based on a previous study of deriving the chiral Lagrangian from the first principles of QCD in which the chiral Lagrangian coefficients are defined in terms of certain Green's functions in QCD. We first show that, in the large-N-c limit, the anomaly part contributions to the coefficients are exactly cancelled by certain terms in the normal part contributions, and the final results of the coefficients only concern the remaining normal part contributions depending on QCD interactions. We then do the calculation in a simple approach with the approximations of taking the large-N-c limit, the leading order in dynamical perturbation theory, and the improved ladder approximation; thereby the relevant Green's functions are expressed in terms of the quark self-energy Sigma(p(2)). By solving the Schwinger-Dyson equation for Sigma(p(2)), we obtain the approximate QCD predicted coefficients and quark condensate which are consistent with the experimental values.
部门归属Tsing Hua Univ, Dept Phys, Beijing 100084, Peoples R China; CCAST, World Lab, Beijing 100080, Peoples R China; Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China; Informat Engn Univ, Inst Elect Technol, Zhengzhou 450004, Henan, Peoples R China
关键词Pion Decay Constant Perturbation-theory Quantum Chromodynamics Symmetry Breaking Quark Energy Model Mass
学科领域Physics
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收录类别SCI
WOS记录号WOS:000177338600041
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被引频次:16[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/13492
专题理论物理所1978-2010年知识产出
通讯作者Yang, H , Tsing Hua Univ, Dept Phys, Beijing 100084, Peoples R China.
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Yang, H,Wang, Q,Kuang, YP,et al. Calculation of the chiral Lagrangian coefficients from the underlying theory of QCD: A simple approach[J]. PHYSICAL REVIEW D,2002,66(1):-.
APA Yang, H,Wang, Q,Kuang, YP,Lu, Q,&Yang, H , Tsing Hua Univ, Dept Phys, Beijing 100084, Peoples R China..(2002).Calculation of the chiral Lagrangian coefficients from the underlying theory of QCD: A simple approach.PHYSICAL REVIEW D,66(1),-.
MLA Yang, H,et al."Calculation of the chiral Lagrangian coefficients from the underlying theory of QCD: A simple approach".PHYSICAL REVIEW D 66.1(2002):-.
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