FLOW EQUATIONS FOR N-POINT FUNCTIONS AND BOUND-STATES

被引：218

作者：

ELLWANGER, U

机构：

[1] Institut für Theoretische Physik, Universität Heidelberg, Heidelberg, D-69120

来源：

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS | 1994年 / 62卷 / 03期

关键词：

D O I：

10.1007/BF01555911

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 discuss the exact renormalization group or flow equation for the effective action and its decomposition into one particle irreducible N point functions. With the help of a truncated flow equation for the four point function we study the bound state problem for scalar fields. A combination of analytic and numerical methods is proposed, which is applied to the Wick-Cutkosky model and a QCD-motivated interaction. We present results for the bound state masses and the Bethe-Salpeter wave function.

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页码：503 / 510

页数：8

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