A dynamical holographic QCD model for chiral symmetry breaking and linear confinement

TL;DR

This paper introduces a holographic QCD model that simultaneously captures chiral symmetry breaking and linear confinement, reproducing hadron spectra and quark potential behaviors.

Contribution

It develops a self-consistent graviton-dilaton-scalar holographic model integrating key QCD phenomena with realistic hadron spectra and confinement features.

Findings

Reproduces Regge trajectories of hadrons

Models linear quark-antiquark potential

Links dilaton field to gluon condensate

Abstract

A self-consistent holographic QCD model is proposed which can realize both chiral symmetry breaking and confinement, two most important phenomena of QCD. It is pointed out that the model can accommodate both Regge spectra of hadrons and the linear potential between quarks. The model is formulated in the framework of graviton-dilaton-scalar system, where the dilaton field is dual to the dimension-2 gluon condensate and can lead to the linear confinement, while the scalar field corresponds to the quark anti-quark condensate and can explain the property of chiral dynamics.