Fluid dynamics of out of equilibrium boost invariant plasmas
Nuclear Theory
2019-02-20 v1 High Energy Physics - Phenomenology
Abstract
We establish a set of equations for moments of the distribution function. In the relaxation time approximations, these moments obey a coupled set of equations that can be truncated order-by-order. Solving the equations of moments, we are able to identify an attractor solution that controls a transition from a free streaming fixed point to a hydrodynamic fixed point. In particular, this attractor solution provides a renormalization of the effective value of the shear viscosity to entropy density ratio, , taking into account off-equilibrium effects.
Keywords
Cite
@article{arxiv.1807.06104,
title = {Fluid dynamics of out of equilibrium boost invariant plasmas},
author = {Jean-Paul Blaizot and Li Yan},
journal= {arXiv preprint arXiv:1807.06104},
year = {2019}
}
Comments
2 figures and 4 pages; Proceedings of the 27th international conference on ultra-relativistic nucleus-nucleus collisions (Quark Matter 2018)