SCHWINGER-DYSON ANALYSIS OF AN EXACTLY SOLVABLE MODEL

被引：0
|
作者：
DAVIS, JE
机构：
[1] Department of Physics, Ohio State University, Columbus, OH 43210
来源：
PHYSICAL REVIEW D | 1992年 / 46卷 / 04期
关键词：
D O I：
10.1103/PhysRevD.46.1750
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
I present an exactly solvable quantum field theory in 0 + 1 dimensions in which a fermion field interacts with a boson field via a Yukawa coupling. The exact two-point Green's functions are constructed and compared with the Green's functions obtained from a ladder approximation to the Schwinger-Dyson equations. I find that the ladder approximation fails to produce even a qualitative agreement with the exact spectral function except in the weak-coupling limit.
引用
收藏
页码：1750 / 1760
页数：11
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