Shear viscosity in weakly coupled ${\cal N} {=} 4$ Super Yang-Mills theory compared to QCD
High Energy Physics - Phenomenology
2008-11-26 v2 High Energy Physics - Theory
Nuclear Theory
Abstract
We compute the shear viscosity of weakly coupled N=4 supersymmetric Yang-Mills (SYM) theory. Our result for [eta/s], the viscosity to entropy-density ratio, is many times smaller than the corresponding weak-coupling result in QCD. This suggests that [eta/s] of QCD near the transition point is several times larger than the viscosity bound, [eta/s] >= 1/4 pi.
Cite
@article{arxiv.hep-ph/0608062,
title = {Shear viscosity in weakly coupled ${\cal N} {=} 4$ Super Yang-Mills theory compared to QCD},
author = {Simon C. Huot and Sangyong Jeon and Guy D. Moore},
journal= {arXiv preprint arXiv:hep-ph/0608062},
year = {2008}
}
Comments
4 pages with 3 figures. References are corrected and minor changes are made. Conclusions unchanged