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arXiv 0812.3881hep-phhep-lathep-th
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关联函数级的AdS/QCD

AdS/QCD at the correlator level

Hilmar Forkel

摘要:

我们推导和分析预测的硬壁和软壁AdS/QCD近似的标量胶球关联函数和衰变常数。我们面对的结果与QCD信息的晶格,算子乘积展开(OPE),一个假设的UV胶子质量与短距离行为的重夸克势,和一个低能定理的基础上反常的简化沃德恒等式。这两个量子点都编码了上述非微扰QCD物理学的互补方面。OPE威尔逊系数,特别是,示出强耦合全息UV动力学对双重力预测的影响,提供了一个具有挑战性的试验场。

英文摘要:

We derive and analyze predictions of both the hard-wall and dilaton soft-wall AdS/QCD approximations for the scalar glueball correlator and decay constants. We confront the results with QCD information from the lattice, the operator product expansion (OPE), a hypothetical UV gluon mass associated with the short-distance behavior of the heavy-quark potential, and a low-energy theorem based on the anomalous dilatational Ward identity. Both duals turn out to encode complementary aspects of the above, nonperturbative QCD physics. The OPE Wilson coefficients, in particular, are shown to provide a challenging testing ground for the impact of the strongly coupled holographic UV dynamics on dual gravity predictions.

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