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Abstract: This note focuses on the large-N behaviour of the Hard Wall model of QCD andclarifies the AdS-QCD dictionary formulated on the basis of the AdS-CFTcorrespondence.
It is shown how short-distance studies performed in theframework of the AdS-QCD Soft Wall model allow one to determine unambiguouslythe chiral symmetry breaking function in the Hard Wall model.
Especially, thedifferent forms of the field-operator prescription are emphasized.
The large-Nbehaviour of the Hard Wall model is then checked considering the vector andgravitational form factors of the pion in the chiral limit.



Autor: Frederic Jugeau IHEP, TPCSF

Fuente: https://arxiv.org/



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