Flavor quarks in AdS4 and gauge/gravity correspondence

TL;DR

This paper explores how flavor quarks influence non-perturbative properties of gauge theories in AdS4 using gauge/gravity duality, highlighting the geometric origin of confinement and chiral symmetry breaking.

Contribution

It demonstrates that in AdS4, quark confinement and chiral symmetry breaking are primarily driven by geometry, with minimal dilaton influence, and analyzes the meson spectra within this framework.

Findings

Quark confinement and chiral symmetry breaking are geometry-driven in AdS4.

Meson spectra are well described by AdS4 field theory formulas.

Mass scales for excited states are modified by gauge interactions.

Abstract

The non-perturbative properties of the gauge theories in the AdS${}_4$ are studied in the dual supergravity by including light flavor quarks, which are introduced by a D7 brane embedding. Contrary to the cases of Minkowski and dS${}_4$, the dilaton does not play any important dynamical role in the AdS${}_4$ case, and the characteristic properties like the quark confinement and the chiral symmetry breaking are realized mainly due to the geometry AdS${}_4$. The possible hadron spectra %in the AdS${}_4$ are also examined, and we find that the meson spectra are well described by the formula given by the field theory in AdS${}_4$, but the characteristic mass scale is modified by the gauge interactions for exited states.