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Chiral susceptibility and the scalar Ward identity
Chang, Lei2; Liu, Yu-xin3,4,5; Roberts, Craig D.1,6; Shi, Yuan-mei7; Sun, Wei-min7,8; Zong, Hong-shi7,8
2009-03-01
发表期刊PHYSICAL REVIEW C
卷号79期号:3
摘要The chiral susceptibility is given by the scalar vacuum polarization at zero total momentum. This follows directly from the expression for the vacuum quark condensate so long as a nonperturbative symmetry preserving truncation scheme is employed. For QCD in-vacuum the susceptibility can rigorously be defined via a Pauli-Villars regularization procedure. Owing to the scalar Ward identity, irrespective of the form or Ansatz for the kernel of the gap equation, the consistent scalar vertex at zero total momentum can automatically be obtained and hence the consistent susceptibility. This enables calculation of the chiral susceptibility for markedly different vertex Ansatze. For the two cases considered, the results were consistent and the minor quantitative differences easily understood. The susceptibility can be used to demarcate the domain of coupling strength within a theory upon which chiral symmetry is dynamically broken. Degenerate massless scalar and pseudoscalar bound-states appear at the critical coupling for dynamical chiral symmetry breaking.
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
DOI10.1103/PhysRevC.79.035209
关键词[WOS]DYSON-SCHWINGER EQUATIONS ; QUARK BOUND-STATES ; QUANTUM CHROMODYNAMICS ; VACUUM SUSCEPTIBILITY ; SYMMETRY BREAKING ; DECAY CONSTANT ; MODEL ; QCD ; CONFINEMENT ; LATTICE
收录类别SCI
语种英语
WOS研究方向Physics
WOS类目Physics, Nuclear
WOS记录号WOS:000264766100057
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被引频次:38[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://libir.pmo.ac.cn/handle/332002/15929
专题暗物质和空间天文实验室
作者单位1.Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA
2.Inst Appl Phys & Computat Math, Beijing 100094, Peoples R China
3.Peking Univ, Dept Phys, Beijing 100871, Peoples R China
4.Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China
5.Natl Lab Heavy Ion Accelerator, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China
6.Univ New S Wales, Sch Phys, Sydney, NSW 2052, Australia
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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Chang, Lei,Liu, Yu-xin,Roberts, Craig D.,et al. Chiral susceptibility and the scalar Ward identity[J]. PHYSICAL REVIEW C,2009,79(3).
APA Chang, Lei,Liu, Yu-xin,Roberts, Craig D.,Shi, Yuan-mei,Sun, Wei-min,&Zong, Hong-shi.(2009).Chiral susceptibility and the scalar Ward identity.PHYSICAL REVIEW C,79(3).
MLA Chang, Lei,et al."Chiral susceptibility and the scalar Ward identity".PHYSICAL REVIEW C 79.3(2009).
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