An improved model of vector mesons in holographic QCD

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 $\bar{\psi }{\sigma }^{\mu \nu }\psi$, 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.

19 pages

References in corpus (4)

• Linear Confinement and AdS/QCD
• Mesons as Open Strings in a Holographic Dual of QCD
• Novel patterns for vector mesons from the large-Nc limit
• Antisymmetric tensors in holographic approaches to QCD

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