Vector meson spectral function in a dynamical AdS/QCD model

TL;DR

This paper uses gauge/gravity duality to study how intense magnetic fields, temperature, and chemical potential affect the spectral function of heavy vector mesons in a hot, dense medium, revealing peak suppression and shifts.

Contribution

It introduces a dynamical AdS/QCD model to analyze the spectral function of heavy vector mesons under extreme conditions, highlighting nontrivial peak shifts.

Findings

Peak height decreases with increasing magnetic field, temperature, and chemical potential.

Peak width increases as these parameters grow.

Peak position shifts nontrivially due to quark-medium interactions.

Abstract

By using gauge/gravity duality, we calculate the spectral function of the heavy vector mesons with the presence of an intense magnetic field in a hot and dense medium. The results show that, a general conclusion, as the increases of magnetic field, chemical potential and temperature, the height of the peak of the spectral function decreases and the width increases. A nontrivial result is the change from the peak position of spectral function. We explain this non-trivial behavior by the interplay of the interaction between the two heavy quarks and the interaction between the medium with each of the heavy quarks.