QCD中因果耗散流体动力学的剪切粘滞系数和弛豫时间
高能物理 - 理论
2009-09-02 v2 统计力学
高能物理 - 唯象学
摘要
基于[T. Koide and T. Kodama, Phys. Rev. \textbf{E 78}, 051107 (2008)]中提出的微观公式,计算了因果耗散流体动力学的剪切粘滞系数和相应的弛豫时间。这里,精确公式被转化为更紧凑的形式,并应用于在手征微扰论和微扰QCD中评估这些输运系数。结果表明,在领头阶计算中,因果剪切粘滞系数η约化为普通的Green-Kubo-Nakano公式,而弛豫时间τ_π与η和压强P通过简单关系τ_π=η/P相关联。
引用
@article{arxiv.0901.3707,
title = {Shear viscosity coefficient and relaxation time of causal dissipative hydrodynamics in QCD},
author = {T. Koide and E. Nakano and T. Kodama},
journal= {arXiv preprint arXiv:0901.3707},
year = {2009}
}
备注
4 pages, 3 figures, errors of calcualtions were corrected, and some rederences and discussions were added. Accepted version for publication in PRL