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External momentum expansion in NJL model
Huang M(黄梅); Zhao WQ(赵维勤); Huang, M; Zhuang, PF; Zhao, WQ
1999
发表期刊HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION
卷号23期号:9页码:926-930
通讯作者Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China ; Tsing Hua Univ, Dept Phys, Beijing 100084, Peoples R China ; CCAST, Beijing 100080, Peoples R China
文章类型Letter
摘要In the large N-c expansion beyond mean-field approximation, we develop a general scheme of SU(2) NJL model including current quark mass explicitly. In our scheme, the constituent quark's propagator is expanded in pion's external momentum k, and all the Feynman diagrams are naturally expanded to k(2) term in a unified way. Our numerical results show that in the mean field approximation, the effect of current quark mass is invisible, however, the effect of current quark mass can be seen explicitly beyond mean-field approximation for reasonable choices of the parameters in NJL model.
关键词ML model large N-c expansion external momentum expansion
学科领域Physics
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语种英语
WOS研究方向Physics
WOS类目Physics, Nuclear ; Physics, Particles & Fields
WOS记录号WOS:000083108500013
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/238748
专题理论物理室
作者单位中国科学院高能物理研究所
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GB/T 7714
Huang M,Zhao WQ,Huang, M,et al. External momentum expansion in NJL model[J]. HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION,1999,23(9):926-930.
APA 黄梅,赵维勤,Huang, M,Zhuang, PF,&Zhao, WQ.(1999).External momentum expansion in NJL model.HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION,23(9),926-930.
MLA 黄梅,et al."External momentum expansion in NJL model".HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION 23.9(1999):926-930.
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