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arXiv · 1108.1191

An improved model of vector mesons in holographic QCD

Raul Alvares·Carlos Hoyos·Andreas Karch
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Abstract

We analyze the sector of dimension-three vector meson operators in the "hard wall" model of holographic QCD, including the vector and axial currents, dual to gauge fields in the bulk, and the tensor operator $\barψσ^{μν}ψ$, dual to a two-form field satisfying a complex self-duality condition. The model includes the effect of chiral symmetry breaking on vector mesons, that involves a coupling between the dual gauge field and the two-form field. We compute the leading logarithmic terms in the operator product expansion of two-point functions and the leading non-perturbative contribution to the tensor-vector correlator. The result is consistent with the operator product expansion of QCD. We also study the spectrum of vector mesons numerically.

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Raul Alvares, Carlos Hoyos, Andreas Karch. 2011-08-04. An improved model of vector mesons in holographic QCD. https://doi.org/10.1103/physrevd.84.095020

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