Lambda Lambda interactions in finite-density QCD sum rules
Zhong XH(钟显辉); Zhong, XH; Ning, PZ
刊名PHYSICAL REVIEW C
2007
卷号75期号:5页码:55206
学科分类Physics
DOI10.1103/PhysRevC.75.055206
通讯作者Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China ; Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China
文章类型Article
英文摘要The properties of Lambda hyperons in pure Lambda matter are studied with the finite-density quantum chromodynamics (QCD) sum rule approach. The first-order quark and gluon condensates in Lambda nuclear matter are deduced from the chiral perturbation theory. The sum-rule predictions are sensitive to the four-quark condensates, <(q) over barq >(2)(rho) and <(q) over barq >(rho)<(s) over bars >(rho), and the pi N sigma term. When <(q) over barq >(2)(rho) is nearly independent of density and <($) over barq >(rho)<(q) over bars >(rho) depends strongly on density, we can obtain weakly attractive Lambda Lambda potentials (about several MeV) in the low Lambda density region, which agrees with the information from the latest double Lambda hypernucleus experiments. The nearly no-density dependence of <(q) over barq >(2)(rho) and strong density dependence of <(q) over barq >(rho)<(s) over bars >(rho) can be explained naturally if the properties of <(q) over barq >(2)(rho) and <(q) over barq >rho <(s) over bars >(rho) are assumed to be similar to those of pi pi and (K) over barK in nuclear medium, respectively.
类目[WOS]Physics, Nuclear
研究领域[WOS]Physics
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语种英语
WOS记录号WOS:000246891100071
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被引频次:5[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/240692
专题中国科学院高能物理研究所_理论物理室_期刊论文
作者单位中国科学院高能物理研究所
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Zhong XH,Zhong, XH,Ning, PZ. Lambda Lambda interactions in finite-density QCD sum rules[J]. PHYSICAL REVIEW C,2007,75(5):55206.
APA 钟显辉,Zhong, XH,&Ning, PZ.(2007).Lambda Lambda interactions in finite-density QCD sum rules.PHYSICAL REVIEW C,75(5),55206.
MLA 钟显辉,et al."Lambda Lambda interactions in finite-density QCD sum rules".PHYSICAL REVIEW C 75.5(2007):55206.
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