On the contribution of plasminos to the shear viscosity of a hot and dense Yukawa-Fermi gas

TL;DR

This paper calculates the shear viscosity of a hot, dense Yukawa-Fermi gas using Green-Kubo formalism, focusing on how particle and plasmino excitations influence thermal transport properties under varying temperature and chemical potential.

Contribution

It investigates the specific impact of plasmino excitations on the fermionic shear viscosity in a Yukawa-Fermi gas, including thermal mass corrections.

Findings

Plasminos have negligible effect on shear viscosity at high temperatures.

Thermal mass corrections influence both bosonic and fermionic shear viscosities.

The study provides insights into thermal transport in dense fermionic systems.

Abstract

Using the standard Green-Kubo formalism, we determine the shear viscosity $\eta$ of a hot and dense Yukawa-Fermi gas. In particular, we study the effect of particle and plasmino excitations on thermal properties of the fermionic part of the shear viscosity, and explore the effects of thermal corrections to particle masses on bosonic and fermionic shear viscosities, $\eta_b$ and $\eta_f$. It turns out that the effects of plasminos on $\eta_f$ become negligible with increasing (decreasing) temperature (chemical potential).