A potential infrared problem with the damping rates for gluons with soft momentum in hot QCD

被引：17

作者：

Abada, A ^{[1
]}

Azi, O ^{[1
]}

Benchallal, K ^{[1
]}

机构：

[1] Ecole Normale Super, Dept Phys, Algiers, Algeria

来源：

PHYSICS LETTERS B | 1998年 / 425卷 / 1-2期

关键词：

D O I：

10.1016/S0370-2693(98)00221-4

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We calculate the damping rate gamma(l) for longitudinal gluons with zero momentum in high-temperature QCD and show that some of its contributing terms are infrared divergent. This is in contrast with the expectation that this damping rate is to be equal to the corresponding one gamma(t) for transverse gluons which is known to be finite. Our calculation was motivated by the fact that similar divergent terms occur when we calculated in a previous work gamma(t) to order p(2), p being the momentum of the gluon. After we present our results, me briefly discuss them. (C) 1998 Published by Elsevier Science B.V. All rights reserved.

引用

页码：158 / 165

页数：8

共 19 条

[1]

ABADA A, UNPUB JHEP

[2] Lifetimes of quasiparticles and collective excitations in hot QED plasmas [J].