Shear and bulk viscosities of a photon gas at low temperature
High Energy Physics - Phenomenology
2013-09-19 v2 Nuclear Theory
Abstract
We explore the viscosities of a photon gas by means of the Euler-Heisenberg effective theory and quantum electrodynamics at zero electron chemical potential. We find parametric estimates that show a very large shear viscosity and an extremely small bulk viscosity (reflecting the very weak coupling simultaneously with a very approximate dilatation invariance). The system is of some interest because it exemplifies very neatly the influence of the breaking of scale invariance on the bulk viscosity.
Keywords
Cite
@article{arxiv.1307.0476,
title = {Shear and bulk viscosities of a photon gas at low temperature},
author = {Antonio Dobado and Felipe J. Llanes-Estrada and Juan M. Torres-Rincon},
journal= {arXiv preprint arXiv:1307.0476},
year = {2013}
}
Comments
v2: Typos corrected, one reference updated, one figure added