Improved Holographic QCD

TL;DR

This paper reviews holographic Einstein-dilaton gravity models that closely mimic large-N Yang-Mills theory, accurately reproducing glueball spectra and thermodynamics, and enabling calculations of transport properties relevant to Quark-Gluon Plasma physics.

Contribution

It provides a comprehensive review of Einstein-dilaton holographic models that effectively replicate key features of large-N Yang-Mills theory at various temperatures.

Findings

Glueball spectra match lattice data

Thermodynamic functions agree with lattice results

Transport coefficients can be reliably computed

Abstract

We provide a review to holographic models based on Einstein-dilaton gravity with a potential in 5 dimensions. Such theories, for a judicious choice of potential are very close to the physics of large-N YM theory both at zero and finite temperature. The zero temperature glueball spectra as well as their finite temperature thermodynamic functions compare well with lattice data. The model can be used to calculate transport coefficients, like bulk viscosity, the drag force and jet quenching parameters, relevant for the physics of the Quark-Gluon Plasma.