A COMPARISON OF THE REAL-TIME AND THE IMAGINARY-TIME FORMALISMS OF FINITE-TEMPERATURE FIELD-THEORY FOR 2-POINT, 3-POINT AND 4-POINT GREEN-FUNCTIONS

被引：95

作者：

AURENCHE, P

BECHERRAWY, T

机构：

[1] Laboratoire de Physique Théorique ENSLAPP URA 14-36 du CNRS, associée à l'Ecole Normale Supérieure de Lyon, et au Laboratoire d'Annecy-le-Vieux de Physique des Particules. - Groupe d'Annecy LAPP, IN2P3-CNRS, B.P. 110

来源：

NUCLEAR PHYSICS B | 1992年 / 379卷 / 1-2期

关键词：

D O I：

10.1016/0550-3213(92)90597-5

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We compare the predictions of the real-time and the imaginary-time formalisms of finite temperature field theory. We construct, in the real-time formalism, retarded and advanced amplitudes which are linear combinations of the usual time-ordered thermo-field dynamics amplitudes. These amplitudes can be easily compared to the various analytically continued amplitudes of the imaginary-time formalism. Explicit calculation of the 2, 3 and 4-point Green functions in phi-3 field theory is done in the one and two-loop approximations and the compatibility of the two formalisms is shown.

引用

页码：259 / 303

页数：45

共 35 条

[11] FINITE-TEMPERATURE RENORMALIZATION-GROUP EQUATION IN QCD .2. [J].