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Logarithmic correction in the deformed AdS(5) model to produce the heavy quark potential and QCD beta function
He S(何松); Huang M(黄梅); He, S; Huang, M; Yan, QS
2011
发表期刊PHYSICAL REVIEW D
卷号83期号:4页码:45034
通讯作者[He, Song ; Huang, Mei] Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China ; [Huang, Mei] Chinese Acad Sci, Theoret Phys Ctr Sci Facil, Beijing, Peoples R China ; [Yan, Qi-Shu] Univ Toronto, Dept Phys, Toronto, ON, Canada ; [Yan, Qi-Shu] Chinese Acad Sci, Grad Univ, Coll Phys Sci, Beijing, Peoples R China
文章类型Article
摘要We study the holographic QCD model, which contains a quadratic term -sigma z(2) and a logarithmic term -c(0) log[(z(IR) - z)/z(IR)] with an explicit infrared cutoff z(IR) in the deformed AdS(5) warp factor. We investigate the heavy-quark potential for three cases, i.e., with only a quadratic correction, with both quadratic and logarithmic corrections, and with only a logarithmic correction. We solve the dilaton field and dilation potential from the Einstein equation and investigate the corresponding beta function in the Gursoy-Kiritsis-Nitti framework. Our studies show that in the case with only a quadratic correction, a negative sigma or the Andreev-Zakharov model is favored to fit the heavy-quark potential and to produce the QCD beta function at 2-loop level; however, the dilaton potential is unbounded in the infrared regime. One interesting observation for the case of positive sigma is that the corresponding beta function exists in an infrared fixed point. In the case with only a logarithmic correction, the heavy-quark Cornell potential can be fitted very well, the corresponding beta function agrees with the QCD beta function at 2-loop level reasonably well, and the dilaton potential is bounded from below in the infrared. At the end, we propose a more compact model which has only a logarithmic correction in the deformed warp factor and has less free parameters.
学科领域Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.83.045034
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语种英语
WOS研究方向Astronomy & Astrophysics ; Physics
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号WOS:000287731600008
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被引频次:28[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/311005/240623
专题理论物理室
作者单位中国科学院高能物理研究所
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GB/T 7714
He S,Huang M,He, S,et al. Logarithmic correction in the deformed AdS(5) model to produce the heavy quark potential and QCD beta function[J]. PHYSICAL REVIEW D,2011,83(4):45034.
APA 何松,黄梅,He, S,Huang, M,&Yan, QS.(2011).Logarithmic correction in the deformed AdS(5) model to produce the heavy quark potential and QCD beta function.PHYSICAL REVIEW D,83(4),45034.
MLA 何松,et al."Logarithmic correction in the deformed AdS(5) model to produce the heavy quark potential and QCD beta function".PHYSICAL REVIEW D 83.4(2011):45034.
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