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题名: Vacuum pseudoscalar susceptibility
作者: Chang, Lei1; Liu, Yu-Xin2, 3, 4; Roberts, Craig D.2, 5; Shi, Yuan-Mei6; Sun, Wei-Min7, 8; Zong, Hong-Shi7, 8
刊名: PHYSICAL REVIEW C
出版日期: 2010-03-01
卷号: 81, 期号:3
DOI: 10.1103/PhysRevC.81.032201
文章类型: Article
英文摘要: We derive a novel model-independent result for the pion susceptibility in QCD via the isovector-pseudoscalar vacuum polarization. In the neighbourhood of the chiral limit, the pion susceptibility can be expressed as a sum of two independent terms. The first expresses the pion-pole contribution. The second is identical to the vacuum chiral susceptibility, which describes the response of QCD's ground state to a fluctuation in the current-quark mass. In this result one finds a straightforward explanation of a mismatch between extant estimates of the pion susceptibility.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Physics, Nuclear
研究领域[WOS]: Physics
关键词[WOS]: QCD ; NUCLEON ; VECTOR ; DYSON ; CONFINEMENT ; COUPLINGS ; EQUATIONS ; SPECTRUM ; PHYSICS ; THEOREM
收录类别: SCI
语种: 英语
WOS记录号: WOS:000276769400008
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/15947
Appears in Collections:暗物质和空间天文实验室_期刊论文

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作者单位: 1.Inst Appl Phys & Computat Math, Beijing 100094, Peoples R China
2.Peking Univ, Dept Phys, Beijing 100871, Peoples R China
3.Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China
4.Natl Lab Heavy Ion Accelerator, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China
5.Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA
6.Nanjing Xiaozhuang Coll, Dept Phys, Nanjing 211171, Peoples R China
7.Nanjing Univ, Dept Phys, Nanjing 210093, Peoples R China
8.Joint Ctr Particle Nucl Phys & Cosmol, Nanjing 210093, Peoples R China
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