Holographic QCD in medium: a bottom up approach

TL;DR

This paper develops a holographic model to study how meson properties change with increasing quark density, revealing that pion decay constant decreases while meson masses increase at higher densities.

Contribution

It introduces a bottom-up holographic approach using RN-AdS background with a hard wall to analyze finite density effects on hadron properties.

Findings

Pion decay constant decreases with density.

Meson masses increase as density grows.

Pion velocity decreases at higher densities.

Abstract

A holographic dual of hadrons at finite density is considered. We use the zero black-hole mass limit of Reisner-Nordstrom (RN) AdS background with hard wall to describe a confining background with finite quark density. We calculate density-dependence of meson masses and decay constants. In our model, pion decay constant and its velocity go down but all the meson masses go up as density grows.