Far-from-equilibrium attractor in non-conformal plasmas
Nuclear Theory
2022-08-02 v1 High Energy Physics - Phenomenology
Abstract
We study the far-off-equilibrium dynamics of a Bjorken expanding non-conformal system within kinetic theory and hydrodynamics. We show that, in contrast to the conformal case, neither shear nor bulk viscous pressure relax quickly to a non-equilibrium attractor. In kinetic theory an early-time, far-from-equilibrium attractor exists for the scaled longitudinal pressure, driven by the rapid longitudinal expansion of the medium. Second-order dissipative hydrodynamics fails to accurately describe this attractor, but a modified anisotropic hydrodynamic formulation reproduces it and provides excellent agreement with kinetic theory.
Cite
@article{arxiv.2208.00744,
title = {Far-from-equilibrium attractor in non-conformal plasmas},
author = {Sunil Jaiswal and Subrata Pal and Chandrodoy Chattopadhyay and Lipei Du and Ulrich Heinz},
journal= {arXiv preprint arXiv:2208.00744},
year = {2022}
}
Comments
Contribution to the proceedings of Quark Matter 2022. 6 pages, 3 figures