Second order hydrodynamic coefficients from kinetic theory
High Energy Physics - Phenomenology
2009-07-29 v2 High Energy Physics - Theory
Nuclear Theory
Abstract
In a relativistic setting, hydrodynamic calculations which include shear viscosity (which is first order in an expansion in gradients of the flow velocity) are unstable and acausal unless they also include terms to second order in gradients. To date such terms have only been computed in supersymmetric N=4 Super-Yang-Mills theory at infinite coupling. Here we compute these second-order hydrodynamic coefficients in weakly coupled QCD, perturbatively to leading order in the QCD coupling, using kinetic theory. We also compute them in QED and scalar lambda phi^4 theory.
Keywords
Cite
@article{arxiv.0811.0729,
title = {Second order hydrodynamic coefficients from kinetic theory},
author = {Mark Abraao York and Guy D. Moore},
journal= {arXiv preprint arXiv:0811.0729},
year = {2009}
}
Comments
31 pages including 3 figures. Corrected for algebraic error which affected the coefficient lambda_1, which turns out to be positive and about twice the magnitude previously found