Finite-temperature spectral function of the vector mesons in an AdS/QCD model

TL;DR

This paper employs the soft-wall AdS/QCD model to study how finite temperature affects vector meson spectral functions, revealing mass shifts, width broadening, and momentum dependence consistent with lattice QCD and screening effects.

Contribution

It introduces a finite-temperature analysis of vector mesons in AdS/QCD, connecting holographic results with lattice QCD findings and screening phenomena.

Findings

Vector meson spectral functions show mass shifts and broadening at finite temperature.

Spectral function momentum dependence aligns with screening in hot winds.

Results are consistent with lattice QCD data for heavy quarkonium.

Abstract

We use the soft-wall AdS/QCD model to investigate the finite-temperature effects on the spectral function in the vector channel. The dissociation of the vector meson tower onto the AdS black hole leads to the in-medium mass shift and the width broadening in a way similar to the lattice QCD results for the heavy quarkonium at finite temperature. We also show the momentum dependence of the spectral function and find it consistent with screening in a hot wind.