Massive holographic QCD in the Veneziano limit

TL;DR

This paper uses bottom-up holography in the Veneziano limit to analyze finite-mass QCD, incorporating quark backreaction and studying various observables, revealing universal behaviors and effects of four-fermion operators.

Contribution

It introduces a holographic approach to finite-mass QCD in the Veneziano limit, including quark backreaction and universality of certain observables.

Findings

Dependence of bound state masses on quark mass

Universality of results across holographic models

Impact of four-fermion operators on QCD observables

Abstract

QCD at finite, flavor independent quark mass is analyzed by using bottom-up holography in the Veneziano limit, where the backreaction of quarks to the gluon dynamics is fully included. The dependence on the quark mass of observables such as the bound state masses, the chiral condensate, the S-parameter, and the critical temperatures is studied. Many of the results are argued to be universal, i.e., independent of the details of the holographic model, and compared to explicit computations in the V-QCD models. The effect of adding four-fermion operators in QCD is also discussed.