PMO OpenIR  > 暗物质和空间天文实验室
General formula for the four-quark condensate and vacuum factorization assumption
Zong, Hong-Shi1,2; He, Deng-Ke1; Hou, Feng-Yao1,3; Sun, Wei-Min1,2
2008-04-20
Source PublicationINTERNATIONAL JOURNAL OF MODERN PHYSICS A
Volume23Issue:10Pages:1507-1520
AbstractBy differentiating the dressed quark propagator with respect to a variable background field, the linear response of the dressed quark propagator in the presence of the background field can be obtained. From this general method, using the vector background field as an illustration, we derive a general formula for the four-quark condensate <(0) over tilde vertical bar : (q) over bar (0)gamma mu q(0)(q) over bar (0)gamma mu q(0) : vertical bar(0) over tilde >. This formula contains the corresponding fully dressed vector vertex and it is shown that factorization for <(0) over tilde vertical bar : (q) over bar (0)gamma mu q(0)(q) over bar (0)gamma mu q(0) : vertical bar(0) over tilde > holds only when the dressed vertex is taken to be the bare one. This property also holds for all other types of four-quark condensate. By comparing this formula with the general expression for the corresponding vacuum susceptibility, it is found that there exists some intrinsic relation between these two quantities, which are usually treated as independent phenomenological inputs in the QCD sum rule external field approach. The above results are also generalized to the case of finite chemical potential and the factorization problem of the four-quark condensate at finite chemical potential is discussed.
KeywordQcd Vacuum Four-quark Condensates Vacuum Saturation Assumption
WOS HeadingsScience & Technology ; Physical Sciences
WOS KeywordQCD SUM-RULES ; SUSCEPTIBILITY ; PHYSICS ; QUARK
Indexed BySCI
Language英语
WOS Research AreaPhysics
WOS SubjectPhysics, Nuclear ; Physics, Particles & Fields
WOS IDWOS:000255555700003
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/15893
Collection暗物质和空间天文实验室
Affiliation1.Nanjing Univ, Dept Phys, Nanjing 210093, Peoples R China
2.Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210093, Peoples R China
3.Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Zong, Hong-Shi,He, Deng-Ke,Hou, Feng-Yao,et al. General formula for the four-quark condensate and vacuum factorization assumption[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS A,2008,23(10):1507-1520.
APA Zong, Hong-Shi,He, Deng-Ke,Hou, Feng-Yao,&Sun, Wei-Min.(2008).General formula for the four-quark condensate and vacuum factorization assumption.INTERNATIONAL JOURNAL OF MODERN PHYSICS A,23(10),1507-1520.
MLA Zong, Hong-Shi,et al."General formula for the four-quark condensate and vacuum factorization assumption".INTERNATIONAL JOURNAL OF MODERN PHYSICS A 23.10(2008):1507-1520.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zong, Hong-Shi]'s Articles
[He, Deng-Ke]'s Articles
[Hou, Feng-Yao]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zong, Hong-Shi]'s Articles
[He, Deng-Ke]'s Articles
[Hou, Feng-Yao]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zong, Hong-Shi]'s Articles
[He, Deng-Ke]'s Articles
[Hou, Feng-Yao]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.