Holography and the conformal window in the Veneziano limit

TL;DR

This paper explores holographic QCD models in the Veneziano limit, focusing on the conformal phase transition and analyzing key phenomena like the S-parameter, technidilaton, and meson masses.

Contribution

It provides a detailed review of V-QCD models near the conformal transition, highlighting new insights into their phenomenology and spectral properties.

Findings

Analysis of the S-parameter near the conformal transition

Identification of the technidilaton as a light scalar mode

Mass spectrum of mesons in the holographic model

Abstract

We discuss holographic QCD in the Veneziano limit (the V-QCD models), concentrating on phenomena near the "conformal" phase transition taking place at a critical value of the ratio x = N_f/N_c. In particular, we review the results for the S-parameter, the technidilaton, and the masses of the mesons.