Collective modes of an anisotropic quark-gluon plasma induced by relativistic jets

TL;DR

This paper investigates how relativistic jets influence collective modes in an anisotropic quark-gluon plasma, revealing significant modifications to dispersion relations and instability growth rates, with implications for plasma isotropization.

Contribution

It introduces a model of jet-induced collective mode modifications in AQGP, highlighting the impact of jet velocity and orientation on plasma stability and isotropization.

Findings

Jet presence alters dispersion relations of collective modes.

Growth rate of instabilities initially increases then dampens, except when jet velocity is perpendicular to wave vector.

Jet-induced effects may accelerate plasma isotropization under specific conditions.

Abstract

We discuss the characteristics of collective modes induced by relativistic jets in an anisotropic quark-gluon plasma(AQGP). Assuming a tsunami-like initial jet distribution, it is found that the dispersion relations for both the stable and unstable modes are modified substantially due to the passage of jet compared to the case when there is no jet. It has also been shown that the growth rate of instability first increases compared to the no jet case and then completely turned into damping except the case when the jet velocity is perpendicular to the wave vector in which case the instability always grows. Thus, the introduction of the jet in the AQGP, in general, might to faster isotropization for the special case when the wave vector is parallel to the anisotropy axis.