# Spectral function for overoccupied gluodynamics from classical lattice simulations

## TL;DR

This paper investigates the spectral characteristics of overoccupied gluonic systems far from equilibrium using classical lattice simulations, focusing on dispersion relations and damping rates of gluonic excitations.

## Contribution

It introduces a novel approach combining classical Yang-Mills simulations with linear response theory to analyze spectral functions in non-equilibrium gluodynamics.

## Key findings

- Measured dispersion relations for gluonic excitations.
- Determined damping rates for transverse and longitudinal modes.
- Identified additional structures in the spectral function.

## Abstract

We study the spectral properties of an overoccupied gluonic system far from equilibrium. Using classical Yang-Mills simulations and linear response theory, we determine the statistical and spectral functions. We measure dispersion relations and damping rates of transversally and longitudinally polarized excitations in the gluonic plasma, and also study further structures in the spectral function.