Gluon propagator with two-loop Schwinger-Dyson equations

被引：24

作者：

Meyers, Joseph ^{[1
]}

Swanson, Eric S. ^{[1
]}

机构：

[1] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA

来源：

PHYSICAL REVIEW D | 2014年 / 90卷 / 04期

关键词：

CONFINEMENT; VERTEX;

D O I：

10.1103/PhysRevD.90.045037

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Gluon, ghost, and quark propagators are computed in the Schwinger-Dyson formalism. The full set of one-loop and two-loop contributions to the gap equations are evaluated for the first time. A new and efficient method for dealing with quadratic divergences is presented and a consistent renormalization method is proposed. We find that the two-loop contribution to the propagators is subleading, good fits to lattice data are possible, and reliable vertex models are important to obtaining desired ultraviolet, infrared, and gauge-symmetric behavior.

引用

页数：11

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