Low-energy theorems and spectral density of the Dirac operator in AdS/QCD

Details Low-energy theorems and spectral density of the Dirac operator in AdS/QCD Low-energy theorems and spectral density of the Dirac operator in AdS/QCD

2009-07-07

arxiv.org/abs/0907.1294v2

Phys.Rev.D80:126005,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

26 pages, minor typos corrected, PACS added

Scientific paper

10.1103/PhysRevD.80.126005

We study the low-energy theorems of QCD from the point of view of the dual AdS/QCD models and demonstrate that these models are compatible with the theorems in the chiral limit, i.e. the arising expressions have the same analytical behavior at the pole when the quark mass tends to zero. Low-energy theorems are formulated in terms of the spectral density of the Dirac operator. In order to calculate the spectral density in the dual holographic models we express it in terms of a partition function of a QCD-like theory.

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