# Thermal spectrum of pseudo-scalar glueballs and Debye screening mass from holography

## TL;DR

This paper uses holographic modeling to analyze the finite temperature spectrum of pseudo-scalar glueballs in a plasma, revealing their thermal behavior and connection to the Debye screening mass, consistent with lattice results.

## Contribution

It introduces a holographic approach to study the thermal spectrum of pseudo-scalar glueballs and relates spectral peak shifts to the Debye screening mass in a plasma.

## Key findings

- Spectral function shows a clear peak for the ground state.
- Peak position varies with temperature, indicating thermal behavior.
- Glueball masses align with previous lattice results.

## Abstract

The finite temperature spectrum of pseudo-scalar glueballs in a plasma is studied using a holographic model. The $ 0^{-+}$ glueball is represented by a pseudo-scalar (axion) field living in a five dimensional geometry that comes from a solution of Einstein equations for gravity coupled with a dilaton scalar field. The spectral function obtained from the model shows a clear peak corresponding to the quasi-particle ground state. Analysing the variation of the position of the peak with temperature, we describe the thermal behavior of the Debye screening mass of the plasma. As a check of consistency, the zero temperature limit of the model is also investigated. The glueball masses obtained are consistent with previous lattice results.