Rotation effect on the spectral function of heavy vector mesons in holographic QCD

TL;DR

This paper investigates how rotation affects the spectral properties and dissociation of heavy vector mesons like J/ψ and Υ(1S) in a holographic QCD model, revealing that rotation enhances meson dissociation especially in transverse directions.

Contribution

It introduces the first holographic analysis of how the radius of a rotating system influences heavy vector meson spectra and dissociation in QCD.

Findings

Rotation increases meson dissociation in the medium.

Transverse direction effects are more significant than longitudinal.

Increasing rotation radius promotes meson dissociation.

Abstract

Exploring heavy vector mesons of the $ J / \psi$ and $ \Upsilon ( 1 S )$ is crucial for understanding the quark gluon plasma (QGP) formed in heavy ion collisions. The influences of rotational effect on the properties of the $ J / \psi$ and the $ \Upsilon ( 1 S )$ are investigated by incorporating rotation medium into the holographic QCD. It is found that temperature, chemical potential, and rotational radius effects enhance the dissociation process of the $ J / \psi$ and the $ \Upsilon ( 1 S )$ states within the medium. This rotation-induced effect is more significant for heavy vector mesons in the transverse direction than that of the longitudinal direction. The first holographic study on the influence of the radius of a homogeneous rotating system on the vector meson spectrum is proposed. It is found that increasing in rotation radius promotes the dissociation of vector mesons of the $ J / \psi$ and $ \Upsilon ( 1 S )$. We also find that the dissociation perpendicular to the direction of rotational angular velocity is more significant than that parallel to it at large rational radius.