COLEMAN-WEINBERG PHASE-TRANSITION IN 2-SCALAR MODELS

被引：32

作者：

BORNHOLDT, S ^{[1
]}

TETRADIS, N ^{[1
]}

WETTERICH, C ^{[1
]}

机构：

[1] UNIV OXFORD, OXFORD OX1 3NP, ENGLAND

来源：

PHYSICS LETTERS B | 1995年 / 348卷 / 1-2期

关键词：

D O I：

10.1016/0370-2693(95)00045-M

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We explore the Coleman-Weinberg phase transition in regions outside the validity of perturbation theory. For this purpose we study a Euclidean field theory with two scalars and discrete symmetry in four dimensions. The phase diagram is established by a numerical solution of a suitable truncation of exact non-perturbative flow equations. We find regions in parameter space where the phase transition (in its dependence on the mass term) is of the second or the first order, separated by a triple point. Our quantitative results for the first order phase transition compare well to the standard perturbative Coleman-Weinberg calculation of the effective potential.

引用

页码：89 / 99

页数：11

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