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arXiv 1007.4907hep-ph
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激发态轻介子的五维有效模型

A five-dimensional effective model for excited light mesons

S. S. Afonin

摘要:

在量子色动力学通常的全息方法中,介子谱是由非平凡的5维背景产生的。我们提出了另一个5维的方案,其中的频谱出现,由于耦合到一个标量场的凝聚应该是对偶的胶子凝聚的形成,并模仿QCD的标度异常。模型的谱由有限个离散态和连续态组成,在强耦合区表现出类Regge行为。

英文摘要:

In the usual holographic approach to QCD, the meson spectrum is generated due to a non-trivial 5-dimensional background. We propose an alternative 5-dimensional scenario in which the spectrum emerges due to coupling to a scalar field whose condensation is supposed to be dual to the formation of gluon condensate and mimics the scale anomaly in QCD. The spectrum of model has finite number of discrete states plus continuum and reveals a Regge-like behavior in the strong coupling regime.

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