A universal constraint on the infrared behavior of the ghost propagator in QCD

被引：4

作者：

Gao, Fei ^{[1
,2
,3
]}

Tang, Can ^{[1
,2
,3
]}

Liu, Yu-xin ^{[1
,2
,3
,4
]}

机构：

[1] Peking Univ, Dept Phys, Beijing 100871, Peoples R China

[2] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China

[3] Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China

[4] Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China

来源：

PHYSICS LETTERS B | 2017年 / 774卷

基金：

中国国家自然科学基金;

关键词：

Gauge transformation; Ward Takahashi identity; Ghost dressing function; DYNAMICAL SYMMETRY-BREAKING; ANALYTIC PROPERTIES; VERTEX FUNCTION; GAUGE; RENORMALIZATION; CONFINEMENT;

D O I：

10.1016/j.physletb.2017.09.069

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

With proposing a unified description of the fields variation at the level of generating functional, we obtain a new identity for the quark-gluon interaction vertex based on gauge symmetry, which is similar to the Slavnov-Taylor Identities (STIs) based on the Becchi-Rouet-Stora-Tyutin transformation. With these identities, we find that in Landau gauge, the dressing function of the ghost propagator approaches to a constant as its momentum goes to zero, which provides a strong constraint on the infrared behaviour of ghost propagator. (c) 2017 The Authors. Published by Elsevier B.V.

引用

页码：243 / 246

页数：4

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