PERTURBATION-THEORY FOR NONEQUILIBRIUM QUANTUM-FIELDS

被引：3

作者：

LAWRIE, ID

机构：

[1] Univ of Leeds, Leeds

来源：

CANADIAN JOURNAL OF PHYSICS | 1993年 / 71卷 / 5-6期

关键词：

D O I：

10.1139/p93-042

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Standard perturbation theory fails when applied to nonequilibrium processes. I explain why. To achieve sensible results, it is necessary to resum the absorptive parts of real-time self-energy corrections. Using the closed-time-path formalism, and in the context of scalar-field theory in an expanding universe, I show how a generalized renormalization technique can achieve this.

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页码：262 / 268

页数：7

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