On Bulk Viscosity and Moduli Decay
On Bulk Viscosity and Moduli Decay
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关于体积粘度和模量衰减
DOI：
10.1143/ptps.186.404
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发表时间：
2010
影响因子：
--
通讯作者：
M. Laine
中科院分区：
文献类型：
--
作者：
M. Laine
这个教学目的讲座是“热 QCD 基础知识”标题下的四场讲座之一，回顾了博德克尔最初指出的一种有趣的关系，这种关系存在于杨米尔斯理论的体积粘度（可能与重离子碰撞实验的流体动力学相关）和与热浴耦合非常弱的标量场的衰减率（出现在一些受粒子物理启发的宇宙学场景中）之间。此外，本主题还作为一个平台来说明许多通用热场理论概念。其他三个讲座（关于 QCD 状态方程以及重夸克经历的弹性和非弹性过程的速率）以简短的百科全书形式进行了概括。
This pedagogically intended lecture, one of four under the header "Basics of thermal QCD", reviews an interesting relationship, originally pointed out by Bodeker, that exists between the bulk viscosity of Yang-Mills theory (of possible relevance to the hydrodynamics of heavy ion collision experiments) and the decay rate of scalar fields coupled very weakly to a heat bath (appearing in some particle physics inspired cosmological scenarios). This topic serves, furthermore, as a platform on which a number of generic thermal field theory concepts are illustrated. The other three lectures (on the QCD equation of state and the rates of elastic as well as inelastic processes experienced by heavy quarks) are recapitulated in brief encyclopedic form.