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题名: Calculation of the chiral Lagrangian coefficients from the underlying theory of QCD: A simple approach
作者: Yang, H ;  Wang, Q ;  Kuang, YP ;  Lu, Q
刊名: PHYSICAL REVIEW D
出版日期: 2002
卷号: 66, 期号:1, 页码:-
关键词: PION DECAY CONSTANT ;  PERTURBATION-THEORY ;  QUANTUM CHROMODYNAMICS ;  SYMMETRY BREAKING ;  QUARK ;  ENERGY ;  MODEL ;  MASS
学科分类: Physics
通讯作者: Yang, H , Tsing Hua Univ, Dept Phys, Beijing 100084, Peoples R China.
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
英文摘要: 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.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000177338600041
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/13492
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:
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):-.
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