General formula for the four-quark condensate and vacuum factorization assumption
文献类型：期刊论文
| 作者 | Zong, Hong-Shi1,2; He, Deng-Ke1; Hou, Feng-Yao1,3; Sun, Wei-Min1,2 |
| 刊名 | INTERNATIONAL JOURNAL OF MODERN PHYSICS A
 |
| 出版日期 | 2008-04-20 |
| 卷号 | 23期号:10页码:1507-1520 |
| 关键词 | QCD vacuum four-quark condensates vacuum saturation assumption |
| 英文摘要 | By 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. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Physics, Nuclear ; Physics, Particles & Fields |
| 研究领域[WOS] | Physics |
| 关键词[WOS] | QCD SUM-RULES ; SUSCEPTIBILITY ; PHYSICS ; QUARK |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000255555700003 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/15893]  |
| 专题 | 紫金山天文台_暗物质和空间天文实验室 |
| 作者单位 | 1.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 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：紫金山天文台
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