Holographic Estimates of the Deconfinement Temperature

TL;DR

This paper evaluates the deconfinement temperature in holographic QCD models, confirming the soft wall model's predictions align with lattice data, while noting uncertainties in extended models due to limited experimental meson data.

Contribution

It demonstrates that the standard soft wall holographic model accurately predicts the deconfinement temperature, and discusses uncertainties in extended models due to experimental limitations.

Findings

Soft wall model predicts Tc around 260 MeV.

Extended models show a broad range of Tc predictions.

Uncertainty linked to limited data on radially excited mesons.

Abstract

The problem of self-consistent estimates of the deconfinement temperature Tc in the framework of the bottom-up holographic approach to QCD is scrutinized. It is shown that the standard soft wall model gives Tc for planar gluodynamics around 260 MeV in a good agreement with the lattice data. The extensions of soft wall model adjusted for descriptions of realistic meson spectra result in a broad range of predictions. This uncertainty is related with a poor experimental information on the radially excited mesons.