A Dynamical Three-Field AdS/QCD Model

TL;DR

This paper introduces a dynamical three-field AdS/QCD model that incorporates background fields to accurately reproduce light meson spectra, providing insights into non-perturbative QCD phenomena.

Contribution

It develops a novel AdS/QCD model with three background fields, including a glueball condensate, to better match experimental meson spectra and describe confinement and chiral symmetry breaking.

Findings

Meson spectra match experimental data well

The third background field is essential for accurate spectra

The model provides a new approach to non-perturbative QCD

Abstract

The Anti-de Sitter Space/Conformal Field Theory (AdS/CFT) correspondence may offer new and useful insights into the non-perturbative regime of strongly coupled gauge theories such as Quantum Chromodynamics (QCD). We present an AdS/CFT-inspired model that describes the spectra of light mesons. The conformal symmetry is broken by a background dilaton field, and chiral symmetry breaking and linear confinement are described by a chiral condensate field. These background fields, along with a background glueball condensate field, are derived from a potential. We describe the construction of the potential, and the calculation of the meson spectra, which match experimental data well. We argue that the presence of the third background field is necessary to properly describe the meson spectra.