Thermalization in weakly coupled nonabelian plasmas
Thermalization in weakly coupled nonabelian plasmas
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DOI：
10.1007/jhep12(2011)044
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发表时间：
2011-07
影响因子：
5.4
通讯作者：
A. Kurkela;G. Moore
中科院分区：
文献类型：
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作者：
A. Kurkela;G. Moore
我们研究如何相对论性，nonabelian等离子体接近平衡的一般情况下。我们的处理是完全参数化的，并且对于小的杨-米尔斯耦合α。首先，我们研究具有初始非平衡动量分布的各向同性系统。我们考虑了最初非常高的入住率和最初非常低的入住率的情况。然后我们考虑系统是各向异性的。我们考虑弱各向异性和大的各向异性，并允许占用参数大或小。将初始激发的典型动量记为Q，将最终温度记为T final，对于T final> Q和T final< Q，完全平衡发生在时间内，除非初始系统是充分各向异性的，在这种情况下，平衡发生得更快。
We investigate how relativistic, nonabelian plasmas approach equilibrium in a general context. Our treatment is entirely parametric and for small Yang-Mills coupling α. First we study isotropic systems with an initially nonequilibrium momentum distribution. We consider both the case of initially very high occupancy and initially very low occupancy. Then we consider systems which are anisotropic. We consider both weak anisotropy and large anisotropy, and allow the occupancy to be parametrically large or small. Writing the typical momentum of an initial excitation as Q and the final temperature as T final, full equilibration occurs in a timefor T final> Q, andfor T final< Q, unless the initial system is sufficiently anisotropic and, in which 7 case equilibration occurs somewhat faster,.