Magnetic component of gluon plasma and its viscosity

TL;DR

This paper explores how magnetic degrees of freedom in gluon plasma influence its viscosity, proposing a model where magnetic and non-magnetic components act independently, with potential superfluid behavior.

Contribution

It introduces a phenomenological model of magnetic gluon plasma components using lattice data, suggesting possible superfluidity and their impact on viscosity.

Findings

Magnetic component described by 3D Euclidean field theory

Parameters estimated from lattice data

Magnetic component may exhibit superfluidity

Abstract

We discuss the role of the magnetic degrees of freedom of the gluon plasma in its viscosity. The main assumption is that motions of the magnetic component and of the rest of the plasma can be considered as independent. The magnetic component in the deconfined phase is described by a three-dimensional (Euclidean) field theory. The parameters of the theory can be estimated phenomenologically, from the lattice data. It is not ruled out that the magnetic component is superfluid.