PROBLEMS OF PERTURBATION-SERIES IN NONEQUILIBRIUM QUANTUM-FIELD THEORIES

被引：50
|
作者：
ALTHERR, T
SEIBERT, D
机构：
[1] LAPP,F-74941 ANNECY LE VIEUX,FRANCE
[2] KENT STATE UNIV,DEPT PHYS,KENT,OH 44242
来源：
PHYSICS LETTERS B | 1994年 / 333卷 / 1-2期
关键词：
D O I：
10.1016/0370-2693(94)91021-9
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
In the standard framework of non-equilibrium quantum field theories, the pinch singularities associated to multiple products of delta-functions do not cancel in a perturbative expansion unless the particle distributions are those for a system in thermal and chemical equilibrium.
引用
收藏
页码：149 / 152
页数：4
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