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arXiv 0910.5955hep-ph
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强子全息图

Hadrons as holograms

Hilmar Forkel

摘要:

我们回顾了我们最近的工作在强相互作用物理的四个主题的角度来看,规范/引力对应。特别地,我们讨论了(i)全息QCD的“度量软壁”对偶的构造,它再现了所观察到的径向和轨道激发的线性平方质量轨道(轻夸克)强子,(ii)度规软壁的扩展,它编码双夸克相关全息,并另外导致一个很好的描述经验核子激发谱,(iii)AdS/QCD对偶,其作为具有特定导出势的5d Einstein-Einton引力的新解出现,并实现了威尔逊圈的面积定律,(iv)计算了硬壁和介子软壁引力场中的胶球关联函数和衰变常数,并对其QCD相关物理内容进行了定量分析。

英文摘要:

We review our recent work on four topics in strong-interaction physics from the perspective of the gauge/gravity correspondence. In particular, we discuss (i) the construction of the ``metric soft wall'' dual for holographic QCD which reproduces the observed linear square-mass trajectories of radially and orbitally excited (light-quark) hadrons, (ii) an extension of the metric soft wall which encodes diquark correlations holographically and additionally leads to an excellent description of the empirical nucleon excitation spectrum, (iii) an AdS/QCD dual that emerges as a new solution of 5d Einstein-dilaton gravity with a specifically derived potential and realizes the area law of the Wilson loop and (approximately) linear meson trajectories dynamically, and finally (iv) the calculation of glueball correlation functions and decay constants in both the hard- and dilaton soft-wall gravity duals, as well as a quantitative analysis of their QCD-relevant physics content.

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