Two loop results from the derivative expansion of the blocked action

被引：23

作者：

Bonanno, A

Zappala, D

机构：

[1] Univ Catania, Ist Astron, I-95125 Catania, Italy

[2] Ist Nazl Fis Nucl, Sez Catania, I-95129 Catania, Italy

[3] Univ Catania, Dipartimento Fis, I-95125 Catania, Italy

来源：

PHYSICAL REVIEW D | 1998年 / 57卷 / 12期

关键词：

D O I：

10.1103/PhysRevD.57.7383

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A derivative expansion of the Wegner-Houghton equation is derived for a scalar theory. The corresponding full non-perturbative renormalization group equations for the potential and the wave-function renormalization function are presented. We also show that the two loop perturbative anomalous dimension for the O(N) theory can be obtained by means of a polynomial truncation in the field dependence in our equations.

引用

页码：7383 / 7387

页数：5

共 26 条

[1] DERIVATIVE EXPANSIONS OF FERMION DETERMINANTS - ANOMALY-INDUCED VERTICES, GOLDSTONE-WILCZEK CURRENTS, AND SKYRME TERMS [J].