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Dynamical holographic QCD model for glueball and light meson spectra
Li DN(李丹凝); Huang M(黄梅); Li, DN; Huang, M
2013
发表期刊JOURNAL OF HIGH ENERGY PHYSICS
期号11页码:88
摘要In this work, we offer a dynamical soft-wall model to describe the gluodynamics and chiral dynamics in one systematical framework. We firstly construct a quenched dynamical holographic QCD (hQCD) model in the graviton-dilaton framework for the pure gluon system, then develop a dynamical hQCD model for the two flavor system in the graviton-dilaton-scalar framework by adding light flavors 011 the gluodynamical background. For two forms of dilaton background field Phi = mu(2z2)(G) and Phi = mu(2z2)(G) tanh(mu(42z2)(G)/mu(2)(G)), the quadratic correction to dilaton background field at infrarcd encodes important non-pert urbative gluodynamics and naturally induces a deformed warp factor of the metric. By self-consistently solving Hie deformed metric induced by the dilaton background field, we find that the scalar glueball spectra in the quenched dynamical model is in very well agreement with lattice data. For two flavor system in the graviton-dilaton-scalar framework, the deformed metric is self-consistently solved by considering both the chiral condensate and nonperturbative gluodynamics in the vacuum, which are responsible for the chiral symmetry breaking and linear confinement, respectively. It is found that the mixing between the chiral condensate and gluon condensate is important to produce the correct light flavor meson spectra. The pion form factor and the vector couplings are also investigated in the dynamical hQCD model. Besides, we give the criteria for the existence of linear quark potential from the metric structure, and show a negative quadratic dilaton background field is not favored in the graviton-dilaton framework.
关键词Gauge-gravity correspondence Confinement AdS-CFT Correspondence Holography and quark-gluon plasmas
学科领域Physics
DOI10.1007/JHEP11(2013)088
收录类别SCI
WOS记录号WOS:000326808700014
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被引频次:20[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/311005/224417
专题理论物理室
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Li DN,Huang M,Li, DN,et al. Dynamical holographic QCD model for glueball and light meson spectra[J]. JOURNAL OF HIGH ENERGY PHYSICS,2013(11):88.
APA 李丹凝,黄梅,Li, DN,&Huang, M.(2013).Dynamical holographic QCD model for glueball and light meson spectra.JOURNAL OF HIGH ENERGY PHYSICS(11),88.
MLA 李丹凝,et al."Dynamical holographic QCD model for glueball and light meson spectra".JOURNAL OF HIGH ENERGY PHYSICS .11(2013):88.
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