Reduction of the N-component scalar model at the two-loop level

被引：12
|
作者：
Jakovac, A
机构：
[1] Department of Atomic Physics, Eötvös University, Budapest
来源：
PHYSICAL REVIEW D | 1996年 / 53卷 / 08期
关键词：
D O I：
10.1103/PhysRevD.53.4538
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Dimensional reduction of high temperature field theories improves IR features of their perturbative treatment. A crucial question is the following: What three-dimensional theory is representing the full system the most faithful way? A careful investigation of the induced three-dimensional counterterm structure of the finite temperature 4D O(N) symmetric scalar theory at the two-loop level leads to proposing the presence of nonlocal operators in the effective theory. A three-dimensional matching process is applied for the construction of the optimal local, superrenormalizable approximation.
引用
收藏
页码：4538 / 4551
页数：14
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