DAMPING RATES FOR MOVING PARTICLES IN HOT QCD

被引：143

作者：

PISARSKI, RD

机构：

[1] Department of Physics, Brookhaven National Laboratory, Upton

来源：

PHYSICAL REVIEW D | 1993年 / 47卷 / 12期

关键词：

D O I：

10.1103/PhysRevD.47.5589

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Using a program of perturbative resummation I compute the damping rates for fields at nonzero spatial momentum to leading order in weak coupling in hot QCD. Sum rules for spectral densities are used to simplify the calculations. For massless fields the damping rate has an apparent logarithmic divergence in the infrared limit, which is cut off by the screening of static magnetic fields (''magnetic mass''). This demonstrates how at high temperature even perturbative quantities are sensitive to nonperturbative phenomena.

引用

页码：5589 / 5600

页数：12

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