Highly anisotropic dissipative hydrodynamics

TL;DR

This paper reviews recent developments in anisotropic dissipative hydrodynamics, providing a framework to model the evolution of quark-gluon plasma with significant momentum-space anisotropies in heavy ion collisions.

Contribution

It introduces a dynamical framework capable of describing highly anisotropic quark-gluon plasma from free-streaming to ideal hydrodynamics.

Findings

Framework accurately models pressure anisotropies in quark-gluon plasma.

Describes evolution from free-streaming to hydrodynamical regimes.

Addresses limitations of isotropic hydrodynamic models.

Abstract

The quark gluon plasma generated in ultrarelativistic heavy ion collisions may possess sizable momentum-space anisotropies that cause the longitudinal and transverse pressures in the local rest frame to be significantly different. We review recent attempts to derive a dynamical framework that can reliably describe systems that possess a high degree of momentum-space anisotropy. The dynamical framework that has been developed can describe the evolution of the quark gluon plasma ranging from the longitudinal free-streaming limit to the ideal hydrodynamical limit.