论文标题
重力软壁模型中的标量光谱
Scalar spectrum in a graviton soft wall model
论文作者
论文摘要
在这项研究中，我们介绍了在自下而上方法中的ADS/QCD框架内的标量粘合球和标量介子光谱的统一现象学分析。为此，我们将最近开发的Graviton软壁（GSW）模型推广，该模型与晶格QCD粘合球谱显示出了极好的一致性，以描述具有独特的能量尺度的胶球和介子。在该方案中，将扩张效应纳入度量中，作为ADS空间的变形。我们也成功地将模型应用于重中膜光谱。我们获得所有标量介子的二次质量方程，而胶球则满足几乎线性质量方程。除了它们的光谱外，我们还讨论了标量粘合球和光标量介子状态在统一框架中的混合：GSW模型。为此，应用了将ADS/QCD的模式函数连接到光前波函数的光循环方法。这种关系提供了正确研究混合条件所需的概率解释。
In this study we present a unified phenomenological analysis of the scalar glueball and scalar meson spectra within an AdS/QCD framework in the bottom up approach. For this purpose we generalize the recently developed graviton soft-wall (GSW) model, which has shown an excellent agreement with the lattice QCD glueball spectrum, to a description of glueballs and mesons with a unique energy scale. In this scheme, dilatonic effects, are incorporated in the metric as a deformation of the AdS space. We apply the model also to the heavy meson spectra with success. We obtain quadratic mass equations for all scalar mesons while the glueballs satisfy an almost linear mass equation. Besides their spectra, we also discuss the mixing of scalar glueball and light scalar meson states within a unified framework: the GSW model. To this aim, the light-front holographic approach, which connects the mode functions of AdS/QCD to the light-front wave functions, is applied. This relation provides the probabilistic interpretation required to properly investigate the mixing conditions.
